Service

Workshop Manual
Audi A6 2019 ➤
Audi A6 Avant 2019 ➤
Audi A6 China 2019 ➤
Audi A7 Sportback 2018 ➤
General body repairs, seats
Edition 10.2019

Service Department. Technical Information

 Service
List of Workshop Manual Repair Groups

Repair Group
00 - Technical data
72 - Seat frames
74 - Seat - padding, covers

Technical information should always be available to the foremen and mechanics, because their
careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness and
safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a
matter of course, be observed.

All rights reserved.

No reproduction without prior agreement from publisher.

Copyright © 2019 Audi AG, Ingolstadt D4B807F531B

 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

Contents

00 - Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Checking child seat anchors following an accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Repair notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.1 Routing and attachment of lines and wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.2 Contact corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.3 Self-locking bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.4 Identification plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.5 Impact wrenches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

72 - Seat frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1 Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Exploded view - front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Exploded view - backrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Exploded view - seat pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4 Exploded view - seat rake adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.5 Exploded view - head restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.6 Overview of fitting locations - electrical and electronic components . . . . . . . . . . . . . . . . . . 15
1.7 Removing and installing front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.8 Attaching front seat to seat repair stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
1.9 Removing and installing backrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
1.10 Removing and installing backrest cover panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.11 Removing and installing spring mat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.12 Removing and installing backrest adjustment unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
1.13 Removing and installing lumbar support adjustment motor V125 / V126 / V129 / V130 . . 29
1.14 Removing and installing front seat fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
1.15 Removing and installing seat frame trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
1.16 Removing and installing bracket for seat frame trim/control unit/compressor . . . . . . . . . . 36
1.17 Removing and installing seat rail cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
1.18 Removing and installing seat height adjustment unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
1.19 Removing and installing seat longitudinal adjustment handle . . . . . . . . . . . . . . . . . . . . . . 40
1.20 Removing and installing seat rake adjustment unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
1.21 Removing and installing carrier for seat depth adjuster - convenience seat . . . . . . . . . . . . 41
1.22 Removing and installing trim for seat depth adjuster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
1.23 Removing and installing bracket for fire extinguisher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
1.24 Removing and installing head restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
1.25 Removing and installing head restraint guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
1.26 Connecting and disconnecting modular wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
1.27 Removing and installing seat adjustment operating unit E470 / E471 . . . . . . . . . . . . . . . . 46
1.28 Removing and installing switch/switch module for front seat . . . . . . . . . . . . . . . . . . . . . . . . 47
1.29 Removing and installing control unit for seat functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
1.30 Removing and installing carrier for multimedia system display unit . . . . . . . . . . . . . . . . . . 49
2 Rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2.1 Exploded view - rear seat bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2.2 Exploded view - rear seat backrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
2.3 Exploded view - centre armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2.4 Exploded view - locking mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
2.5 Exploded view - head restraint and head restraint guide . . . . . . . . . . . . . . . . . . . . . . . . . . 58
2.6 Overview of fitting locations - electrical and electronic components . . . . . . . . . . . . . . . . . . 60
2.7 Removing and installing rear seat bench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
2.8 Removing and installing rear seat backrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
2.9 Removing and installing backrest with load-through hatch . . . . . . . . . . . . . . . . . . . . . . . . 65
2.10 Removing and installing trim for backrest with load-through hatch . . . . . . . . . . . . . . . . . . 66

Contents i
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General body repairs, seats - Edition 10.2019

2.11 Removing and installing outer bearing sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

2.12 Removing and installing inner pivot pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
2.13 Removing and installing centre bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
2.14 Removing and installing backrest remote release mechanism . . . . . . . . . . . . . . . . . . . . . . 68
2.15 Removing and installing locking mechanism for rear seat backrest . . . . . . . . . . . . . . . . . . 69
2.16 Removing and installing trim for locking mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
2.17 Removing and installing lock cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
2.18 Removing and installing rear seat fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
2.19 Removing and installing centre armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
2.20 Removing and installing centre armrest storage compartment (rear) . . . . . . . . . . . . . . . . 74
2.21 Removing and installing frame for centre armrest insert . . . . . . . . . . . . . . . . . . . . . . . . . . 74
2.22 Removing and installing trim for centre console insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
2.23 Removing and installing cover (top) for centre armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
2.24 Removing and installing cup holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
2.25 Removing and installing head restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
2.26 Removing and installing head restraint guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
2.27 Removing and installing control unit for seat adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . 84
3 Front seat pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
3.1 Connection diagram - pneumatic system, convenience seat . . . . . . . . . . . . . . . . . . . . . . . . 86
3.2 Exploded view - pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
3.3 Checking pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
3.4 Severing and connecting pneumatic lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
3.5 Servicing pneumatic lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
3.6 Removing and installing compressor for pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . 93
3.7 Removing and installing lumbar support with air cushions - module with valve block and
backrest bolster adjusters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
3.8 Removing and installing air cushion for seat bolster adjustment . . . . . . . . . . . . . . . . . . . . 95
3.9 Removing and installing valve block for massage function . . . . . . . . . . . . . . . . . . . . . . . . 96
3.10 Removing and installing massage mat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
4 Rear seat pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
4.1 Connection diagram - pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
4.2 Exploded view - pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
4.3 Checking pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
4.4 Severing and connecting pneumatic lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
4.5 Removing and installing compressor for pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . 105
4.6 Removing and installing lumbar support - module with air cushions and valve block . . . . 106
4.7 Removing and installing valve block for massage function . . . . . . . . . . . . . . . . . . . . . . . . 106
4.8 Removing and installing massage mat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

74 - Seat - padding, covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

1 Covers and padding on front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
1.1 Exploded view - seat pan cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
1.2 Exploded view - backrest cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
1.3 Exploded view - seat heating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
1.4 Removing and installing seat pan cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
1.5 Separating seat pan cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
1.6 Removing and installing backrest cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
1.7 Separating backrest cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
1.8 Removing and installing seat heating element Z6 / Z8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
1.9 Removing and installing seat bolster heating element . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
1.10 Removing and installing seat depth adjuster heating element . . . . . . . . . . . . . . . . . . . . . . 132
1.11 Removing and installing backrest heating element Z7 / Z9 . . . . . . . . . . . . . . . . . . . . . . . . 132
2 Covers and padding on rear seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
2.1 Exploded view - cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
2.2 Exploded view - seat heating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
2.3 Removing and installing cover and padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

ii Contents
 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

2.4 Removing and installing intermediate padding - backrest with load-through hatch . . . . . . 145
2.5 Detaching cover from padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
2.6 Removing and installing side padding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
2.7 Removing and installing seat heating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
2.8 Removing and installing backrest heating element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Contents iii
 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

iv Contents
 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

00 – Technical data
1 Safety precautions
(ARL006586; Edition 10.2019)
⇒ “1.1 Checking child seat anchors following an accident”,
page 1
♦ Observe safety precautions ⇒ General body repairs, interior;
Rep. gr. 00 ; Safety precautions .

1.1 Checking child seat anchors following

an accident
Points to check:
♦ After an accident, child seat anchors must be checked for
damage and deformation.
♦ Child seat anchors welded or bolted to body or seats/backr‐
ests must not be repaired or straightened.
♦ Child seat anchors bolted to the body or seats/backrests must
be renewed if they are damaged or deformed.
♦ Bolts for securing child seat anchors must be renewed if re‐
tainer is damaged.

1. Safety precautions 1
 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

2 Repair notes
⇒ “2.1 Routing and attachment of lines and wiring”, page 2
⇒ “2.2 Contact corrosion”, page 2
⇒ “2.3 Self-locking bolts”, page 2
⇒ “2.4 Identification plates”, page 2
⇒ “2.5 Impact wrenches”, page 2

2.1 Routing and attachment of lines and wir‐

ing
Make sketches or take photographs when unfastening or remov‐
ing and installing hydraulic and pneumatic lines or electrical wires.
This ensures re-installation at the original location.

2.2 Contact corrosion

Contact corrosion can occur if unsuitable fasteners are used (e.g.
bolts, nuts, washers, etc.).
For this reason, only fasteners with a special surface coating are
fitted.
Additionally, all rubber and plastic parts and all adhesives are
made of non-conductive materials.
Always install new parts as listed in the Electronic parts catalogue
if you are not sure whether used parts can be refitted.
Please note:
♦ We recommend using only genuine replacement parts: these
have been fully tested and are compatible with aluminium.
♦ We recommend using Audi Genuine Accessories.
♦ Damage caused by contact corrosion is not covered by the
warranty.

2.3 Self-locking bolts

If bolts secured with microencapsulation have been removed,
they must be renewed, and the threaded holes must be cleaned
with a suitable tap.

2.4 Identification plates

When renewing vehicle components, the identification plates on
the old parts that have a replacement part number (see ⇒ Elec‐
tronic parts catalogue ) must be attached to the new parts due to
approval regulations.

2.5 Impact wrenches

In general, it is permitted to use an impact wrench to unscrew
bolts and nuts. An exception to this is when work is performed
inside an open high-voltage battery. For this work, it is not per‐
mitted to use an impact wrench.
An impact wrench may be used to screw in bolts and nuts when
performing repair work if the following requirements are observed.
In general, electric and compressed-air impact wrenches should
be used.

2 Rep. gr.00 - Technical data

 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

Requirements:
• Only screw in bolts with locking fluid or self-locking nuts at low
speed.
• Use a suitable impact wrench with variable speed and adjust‐
able torque range.
• Use suitable bits when working in the vicinity of sensitive sur‐
faces, e.g. plastic-coated bits for aluminium rims.
• When working in the vicinity of natural gas systems, observe
the information in the Workshop Manual “Natural gas engines
- General information”.
Use:
• Fit bolts/nuts by hand.
• Only use an impact wrench to screw in bolts/nuts until the head
of the bolt/nut makes contact and then continue tightening with
a torque wrench.
• Clean threaded pins before unscrewing the bolt/nut.

2. Repair notes 3
 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

72 – Seat frames

4 Rep. gr.72 - Seat frames

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General body repairs, seats - Edition 10.2019

1 Front seats
⇒ “1.1 Exploded view - front seat”, page 6
⇒ “1.2 Exploded view - backrest”, page 7
⇒ “1.3 Exploded view - seat pan”, page 9
⇒ “1.4 Exploded view - seat rake adjuster”, page 13
⇒ “1.5 Exploded view - head restraint”, page 14
⇒ “1.6 Overview of fitting locations - electrical and electronic com‐
ponents”, page 15
⇒ “1.7 Removing and installing front seat”, page 17
⇒ “1.8 Attaching front seat to seat repair stand”, page 23
⇒ “1.9 Removing and installing backrest”, page 24
⇒ “1.10 Removing and installing backrest cover panel”,
page 25
⇒ “1.11 Removing and installing spring mat”, page 28
⇒ “1.12 Removing and installing backrest adjustment unit”, page
29
⇒ “1.13 Removing and installing lumbar support adjustment motor
V125 / V126 / V129 / V130 ”, page 29
⇒ “1.14 Removing and installing front seat fans”, page 30
⇒ “1.15 Removing and installing seat frame trim”, page 32
⇒ “1.16 Removing and installing bracket for seat frame trim/con‐
trol unit/compressor”, page 36
⇒ “1.17 Removing and installing seat rail cover”, page 37
⇒ “1.18 Removing and installing seat height adjustment unit”,
page 39
⇒ “1.19 Removing and installing seat longitudinal adjustment
handle”, page 40
⇒ “1.20 Removing and installing seat rake adjustment unit”, page
40
⇒ “1.21 Removing and installing carrier for seat depth adjuster -
convenience seat”, page 41
⇒ “1.22 Removing and installing trim for seat depth adjuster”,
page 42
⇒ “1.23 Removing and installing bracket for fire extinguisher”,
page 43
⇒ “1.24 Removing and installing head restraint”, page 44
⇒ “1.25 Removing and installing head restraint guide”,
page 45
⇒ “1.26 Connecting and disconnecting modular wiring”,
page 46
⇒ “1.27 Removing and installing seat adjustment operating unit
E470 / E471 ”, page 46
⇒ “1.28 Removing and installing switch/switch module for front
seat”, page 47
⇒ “1.29 Removing and installing control unit for seat functions”,
page 48
⇒ “1.30 Removing and installing carrier for multimedia system
display unit”, page 49

1. Front seats 5
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General body repairs, seats - Edition 10.2019

1.1 Exploded view - front seat

1 - Cover
❑ For connector point
2 - Bolt
❑ 40 Nm
3 - Spindle cover
❑ Clip into cover
4 - Bolt
❑ 40 Nm
5 - Spindle cover
❑ Clip into cover
6 - Bolt
❑ 40 Nm
7 - Front seat
❑ Removing and installing
⇒ page 17
8 - Bolt
❑ 40 Nm
9 - Electrical connector
❑ With corrugated tube for
modular wire routing
❑ Connecting and discon‐
necting modular wiring
⇒ page 46
10 - Connector point

6 Rep. gr.72 - Seat frames

 Audi A6 2019 ➤ , Audi A6 Avant 2019 ➤ , Audi A6 China 2019 ➤ , Audi A7 S ...
General body repairs, seats - Edition 10.2019

1.2 Exploded view - backrest

1 - Pneumatic lumbar support

❑ Convenience seat only
❑ Module with air cush‐
ions, valve block and
backrest bolster adjust‐
er
❑ Exploded view
⇒ page 87
2 - Pop rivet
3 - Electromechanical lumbar
support
❑ Depending on version
♦ Driver seat lumbar support
longitudinal adjustment
motor - V125- / front pas‐
senger seat lumbar support
longitudinal adjustment
motor - V126-
♦ Driver seat lumbar support
height adjustment motor -
V129- / front passenger
seat lumbar support height
adjustment motor - V130-
❑ For standard/sports
seat
❑ Removing and installing
⇒ page 29
4 - Extension springs
❑ For spring mat
❑ 8x
❑ Note different lengths
5 - Spring mat
❑ Standard seat only (de‐
pending on equipment version)
❑ Removing and installing ⇒ page 28
6 - Rubber retaining pin
❑ For fan
❑ 4x
❑ Insert in lumbar support
7 - Backrest fan
❑ Convenience seat only (depending on equipment version)
♦ Driver seat backrest fan - V388- / front passenger seat backrest fan - V389-
❑ Removing and installing ⇒ page 31
8 - Mount
❑ Equipment version: multimedia system only
❑ Removing and installing ⇒ page 49
9 - Bolt
❑ 4x
❑ Equipment version: multimedia system only
❑ 6.5 Nm

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10 - Trim
❑ Equipment version: multimedia system only
❑ Removing and installing ⇒ page 49
11 - Insert
❑ Removing and installing ⇒ page 45
12 - Outer backrest frame
❑ Removing and installing ⇒ page 24
13 - Backrest cover panel
❑ Removing and installing ⇒ page 25
14 - Hand wheel
❑ For manual backrest adjustment
❑ Removing and installing ⇒ page 29
15 - Bolts
❑ 4x
❑ Self-locking
❑ Renew after removing
❑ Clean threaded holes for bolts using e.g. a thread tap
❑ 33 Nm
16 - Fastener
❑ For seat frame trim
❑ Convenience seat only
❑ Removing and installing ⇒ page 24
17 - Bolt
❑ 2x
❑ 5 Nm
18 - Upholstery wire
❑ For backrest
❑ Sports/convenience seat only
❑ 2x
19 - Bolt
❑ Tightening torque ⇒ Item 15 (page 88)

8 Rep. gr.72 - Seat frames

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1.3 Exploded view - seat pan

1 - Seat longitudinal adjust‐

ment handle
❑ For manual seat adjust‐
ment
❑ Renew after removing
❑ Removing and installing
⇒ page 40
2 - Trim for seat depth adjuster
❑ Sports seat only
❑ Removing and installing
⇒ page 42
3 - Seat frame trim
❑ Front
❑ Convenience seat only
❑ Removing and installing
⇒ page 32
4 - Bracket
❑ For seat frame trim/con‐
trol unit/compressor
❑ Convenience seat only
❑ Removing and installing
⇒ page 36
5 - Bolt
❑ 2x
❑ 3.5 Nm
6 - Carrier for seat depth ad‐
juster
❑ Convenience seat only
❑ Removing and installing
⇒ page 41
7 - Retaining bracket
❑ Convenience seat only
❑ 2x
8 - Bolt
❑ 3.5 Nm
9 - Trim
❑ For seat depth adjuster
❑ Convenience seat only
❑ 2x
❑ Removing: Pull off towards front
10 - Cover
❑ Front
❑ For seat rail
❑ 2x
❑ Removing and installing ⇒ page 37
11 - Spindle cover
❑ For seat rail
❑ 2x

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❑ Removing and installing ⇒ page 37

12 - Mounting
❑ For fire extinguisher
❑ Equipment version: Only on front passenger seat
❑ Removing and installing ⇒ page 43
13 - Bolt
❑ 2x
❑ 7.5 Nm
14 - Bolt
❑ 4x
❑ 7.5 Nm
15 - Bracket
❑ For fire extinguisher
❑ Equipment version: Only on front passenger seat
❑ Removing and installing ⇒ page 43
16 - Spreader rivet
17 - Seat bolster adjuster
❑ Convenience seat only
❑ 2x
❑ Removing and installing ⇒ page 95
18 - Spreader rivet
19 - Cover
❑ For seat depth adjuster
❑ Convenience seat only
❑ Clip into carrier for seat depth adjuster
20 - Spreader rivet
❑ 2x
21 - Seat frame trim
❑ Tunnel side
❑ Removing and installing ⇒ page 33
22 - Upholstery wire
❑ For seat pan
❑ Sports/convenience seat only
❑ 2x
23 - Seat pan
24 - Child seat anchor
❑ Equipment version: Only on front passenger seat
❑ Renew child seat anchor if damaged or deformed
❑ Exploded view ⇒ General body repairs, interior; Rep. gr. 69 ; Child seat anchors; Exploded view - child
seat anchors (front)
25 - Protective cap
❑ For fan
❑ Removing and installing ⇒ page 30
26 - Rubber retaining pin
❑ For fan
❑ 4x
❑ Insert in seat pan

10 Rep. gr.72 - Seat frames

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27 - Seat cushion fan

❑ Depending on version
♦ Driver seat cushion fan - V390- / front passenger seat cushion fan - V391-
❑ Removing and installing ⇒ page 30
28 - Pop rivet
❑ 2x
29 - Bolt
❑ 2x
❑ Tightening torque ⇒ General body repairs, interior; Rep. gr. 69 ; Child seat anchors; Exploded view -
child seat anchors (front)
30 - Bracket
❑ For footwell light
❑ Depending on version
❑ Clip into seat pan
31 - Cover
❑ Rear
❑ For seat rail
❑ 2x
❑ Removing and installing ⇒ page 37
32 - Bracket
❑ For seat frame trim
❑ For convenience seat
❑ Removing and installing ⇒ page 34
33 - Bracket
❑ For seat frame trim
❑ For standard/sports seat
❑ Removing and installing ⇒ page 34
34 - Bolt
❑ 3x
❑ 7.5 Nm
35 - Bolt
❑ 5x
❑ 1 Nm
36 - Retainer
❑ Convenience seat only
❑ Clip into seat frame trim
37 - Seat frame trim
❑ Sill side
❑ Removing and installing ⇒ page 34
38 - Spreader rivet
39 - Actuator
❑ For electric seat adjustment
❑ Removing and installing ⇒ page 46
40 - Seat height adjustment adapter
❑ For lever (manual seat adjustment)
❑ Removing and installing ⇒ page 39

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41 - Bolt
❑ 3.5 Nm
42 - Seat height adjustment lever
❑ For manual seat adjustment
❑ Removing and installing ⇒ page 39
43 - Seat adjustment operating unit
❑ For electric seat adjustment
♦ Driver seat adjustment operating unit - E470- / front passenger seat adjustment operating unit - E471-
❑ Removing and installing ⇒ page 46
44 - Switch/switch module for front seat
❑ For electric seat adjustment - vehicles without massage function
♦ Driver seat lumbar support adjustment switch - E176- , front passenger seat lumbar support adjustment
switch - E177-
❑ For electric seat adjustment - vehicles with massage function
♦ Switch module for driver seat - E663- / switch module for front passenger seat - E664-
❑ Removing and installing ⇒ page 47
45 - Cover
❑ For seat rail (sill side)
❑ Removing and installing ⇒ page 38
46 - Spreader rivet
47 - Bracket
❑ For control unit
❑ For standard/sports seat with electric adjustment
❑ Removing and installing ⇒ page 36
48 - Grip for seat depth adjuster
❑ Sports seat only
❑ Removing and installing ⇒ page 42

12 Rep. gr.72 - Seat frames

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1.4 Exploded view - seat rake adjuster

1 - Bolt
❑ 2x
❑ Not available separate‐
ly; repair set ⇒ Electron‐
ic parts catalogue
❑ Self-locking
❑ Renew after removing
❑ Clean threaded holes
for bolts using e.g. a
thread tap
❑ 10 Nm
2 - Seat rake adjustment motor
❑ Removing and installing
⇒ page 40
3 - Bolt
❑ Self-locking
❑ Not available separate‐
ly; repair set ⇒ Electron‐
ic parts catalogue
❑ Renew after removing
❑ Clean threaded hole for
bolt using e.g. a thread
tap
❑ 20 Nm
4 - Adjusting shaft

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1.5 Exploded view - head restraint

1 - Outer backrest frame

❑ Exploded view
⇒ page 7
2 - Head restraint guide
❑ Right-side
❑ Removing and installing
⇒ page 45
3 - Head restraint
❑ With height adjustment
❑ Removing and installing
⇒ page 44
4 - Head restraint
❑ With height and depth
adjustment
❑ Removing and installing
⇒ page 44
5 - Trim collar
6 - Head restraint guide
❑ Left-side
❑ With release ring for
head restraint
❑ Removing and installing
⇒ page 45

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1.6 Overview of fitting locations - electrical and electronic components

1 - Seat position sensor

♦ Driver side seat position
sensor - G553- / front pas‐
senger side seat position
sensor - G554-
❑ Exploded view ⇒ Gen‐
eral body repairs, interi‐
or; Rep. gr. 69 ; Seat
position sensor; Explo‐
ded view - seat position
sensor
2 - Seat depth adjustment mo‐
tor
❑ Convenience seat only
♦ Driver seat depth adjust‐
ment motor - V256- / front
passenger seat depth ad‐
justment motor - V257-
❑ Integrated into upper
seat pan frame; if defec‐
tive, renew seat pan
⇒ page 9
3 - Seat longitudinal adjust‐
ment motor
♦ Driver seat longitudinal ad‐
justment motor - V28- / front
passenger seat longitudinal
adjustment motor - V31-
❑ Integrated into lower
seat pan frame; if defec‐
tive, renew seat pan
⇒ page 9
4 - Seat occupied sensor on
front passenger side - G128-
❑ Front passenger’s seat
only
❑ Removing and installing ⇒ General body repairs, interior; Rep. gr. 69 ; Seat position sensor; Removing
and installing seat position sensor
5 - Seat cushion fan
❑ Depending on version
♦ Driver seat cushion fan - V390- / front passenger seat cushion fan - V391-
❑ Removing and installing ⇒ page 30
6 - Belt switch
♦ Driver side belt switch - E24- / front passenger side belt switch - E25-
❑ Removing and installing ⇒ General body repairs, interior; Rep. gr. 69 ; Seat belts; Removing and in‐
stalling belt buckle (front)
7 - Footwell light
❑ Rear
❑ Depending on version
♦ Left footwell light - W9- / right footwell light - W10-
❑ Removing and installing ⇒ Electrical system; Rep. gr. 96 ; Lights; Removing and installing footwell light
-W9-/-W10-

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8 - Backrest adjustment motor

♦ Driver seat backrest adjustment motor - V45- / front passenger seat backrest adjustment motor - V46-
❑ Integrated into backrest; if defective, backrest must be renewed ⇒ page 7
9 - Valve block for massage function
❑ Convenience seat only, equipment version with pneumatic massage function
♦ Valve block 1 in driver seat - N475- / valve block 1 in front passenger seat - N477-
❑ Exploded view ⇒ page 87
10 - Valve block for lumbar support
❑ Convenience seat only, equipment version with pneumatic lumbar support and bolster adjustment
♦ Valve block 2 in driver seat - N476- / valve block 2 in front passenger seat - N478-
❑ Exploded view ⇒ page 87
11 - Backrest fan
❑ Depending on version
♦ Driver seat backrest fan - V388- / front passenger seat backrest fan - V389-
❑ Removing and installing ⇒ page 31
12 - Multimedia system display unit
❑ Depending on version
❑ Removing and installing carrier for multimedia system display unit ⇒ page 49
13 - Side airbag
❑ Front
♦ Side airbag igniter on driver side - N199- / side airbag igniter on front passenger side - N200-
❑ Exploded view ⇒ General body repairs, interior; Rep. gr. 69 ; Side airbags; Exploded view - side airbag
(front)
14 - Display and operating unit control unit
❑ Depending on version
♦ Rear left information display and operating unit control unit - J648- / rear right information display and op‐
erating unit control unit - J649-
15 - Lumbar support
❑ Depending on version
♦ Driver seat lumbar support longitudinal adjustment motor - V125- , driver seat lumbar support height ad‐
justment motor - V129-
♦ Front passenger seat lumbar support longitudinal adjustment motor - V126- , front passenger seat lumbar
support height adjustment motor - V130-
❑ Exploded view ⇒ page 7
16 - Seat height adjustment motor
♦ Driver seat height adjustment motor - V245- / front passenger seat height adjustment motor - V246-
❑ Integrated into upper seat pan frame; if defective, renew seat pan ⇒ page 9
17 - Seat adjustment operating unit
♦ Driver seat adjustment operating unit - E470- / front passenger seat adjustment operating unit - E471-
❑ Exploded view ⇒ page 9
18 - Switch/switch module for front seat
❑ For electric seat adjustment - vehicles without massage function
♦ Driver seat lumbar support adjustment switch - E176- , front passenger seat lumbar support adjustment
switch - E177-
❑ For electric seat adjustment - vehicles with massage function
♦ Switch module for driver seat - E663- / switch module for front passenger seat - E664-

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❑ Exploded view ⇒ page 9

19 - Seat rake adjustment motor
♦ Driver seat rake adjustment motor - V243- / front passenger seat rake adjustment motor - V244-
❑ Exploded view ⇒ page 13
20 - Seat occupied recognition control unit - J706-
❑ NAR version: for front passenger seat only
❑ Exploded view ⇒ General body repairs, interior; Rep. gr. 69 ; Seat-occupied recognition system; Over‐
view of fitting locations - seat-occupied recognition system
21 - Compressor for pneumatic system
❑ Convenience seat only (depending on equipment version)
♦ Compressor for multi-contour driver seat - V439- / compressor for multi-contour front passenger seat - V440-
❑ Exploded view ⇒ page 87
22 - Control unit for seat functions
♦ Seat and steering column adjustment control unit with memory - J136- / front passenger seat adjustment
with memory control unit - J521-
❑ Removing and installing ⇒ page 48

1.7 Removing and installing front seat

⇒ “1.7.1 Removing and installing front seat”, page 17
⇒ “1.7.2 Removing front seat if seat longitudinal adjustment motor
is defective”, page 20

1.7.1 Removing and installing front seat

• Observe safety precautions ⇒ General body repairs, interior;
Rep. gr. 00 ; Safety precautions; Safety precautions when
working on pyrotechnic components .
• A second mechanic is required to perform this step (as de‐
scribed on ⇒ page 20 ).
Special tools and workshop equipment required
♦ Removal wedge - 3409-

♦ Protector - VAS 871 001-

Note:
The seat assembly device - VAS 281 003- can be used to lift out
the front seat. Refer to the instructions provided.
Removing
– Move head restraint to lowest possible position.
– Move front seat as far forwards and upwards as it will go.

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– Remove bolts -3 and 4- from rear of seat rail.

– Move front seat as far back and down as it will go.

– Prise spindle cover -1- off seat rail cover -2- (both sides) using
removal wedge - 3409- or a small flat-bladed screwdriver.

– Remove bolts -1 and 2- from front of seat rail.

18 Rep. gr.72 - Seat frames

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To remove seats:
– Unclip cable retainer -4- at fasteners.

WARNING
Risk of airbag being triggered
Risk of injury
– Check whether airbag warning lamp is on or is flashing.
– If airbag warning lamp is on or flashing, event memory must
be read out.
– If event memory shows entry »Short to positive«, battery
must be disconnected ⇒ Electrical system; Rep. gr. 27 ;
Battery; Disconnecting and connecting battery .
– Always follow instructions in Guided Fault Finding ⇒ Vehicle
diagnostic tester if there is an entry in the event memory.
– If airbag warning lamp does not light up or flash or if there is
no event memory entry »Short to positive«, switch off ignition
and wait 10 seconds with ignition key outside vehicle.

CAUTION
It is possible to trigger pyrotechnic components unintentionally.
Risk of injury
– Discharge static electricity by briefly touching door striker
plate.

– Unplug electrical connectors at connector point in floor.

1 - For equipment version with Rear Seat Entertainment
2 - Side airbag
3 - Belt buckle/seat position sensor
5 - Power supply
6 - For equipment version with seat heating

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– Before lifting out front seat, attach protector - VAS 871001- to

protect sill panel trim.
– Lift front seat out of vehicle with the assistance of a second
mechanic.
• Take care not to damage the seat position sensor when setting
the seat down.
Installing
Installation is carried out in reverse order; note the following:
– Check seat position sensor for damage.
• Slide electrical connectors on as far as stop so that they en‐
gage audibly.
• Front seat with manual adjustment: Seat rails of seat longitu‐
dinal adjuster must engage so that they are parallel.
– With the help of a second mechanic, lift front seat into vehicle
and position correctly.

CAUTION
It is possible to trigger pyrotechnic components unintentionally.
Risk of injury
– Discharge static electricity by briefly touching door striker
plate.

– Plug in connectors at connector point in floor.

1 - For equipment version with Rear Seat Entertainment
2 - Side airbag
3 - Belt buckle/seat position sensor
5 - Power supply
6 - For equipment version with seat heating

– Tighten bolts (front) in sequence -1, 2-.

– Move front seat as far forwards and upwards as it will go.
– Tighten bolts (rear) in sequence -3, 4-.
• If a fault in the airbag system is displayed after installation in
the dash panel insert, the event memory must be interrogated,
erased and then re-interrogated ⇒ Vehicle diagnostic tester.
Tightening torques
♦ ⇒ “1.1 Exploded view - front seat”, page 6

1.7.2 Removing front seat if seat longitudinal

adjustment motor is defective
• Observe safety precautions ⇒ General body repairs, interior;
Rep. gr. 00 ; Safety precautions; Safety precautions when
working on pyrotechnic components .

20 Rep. gr.72 - Seat frames

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General body repairs, seats - Edition 10.2019

• A second mechanic is required to perform this step (as de‐

scribed on ⇒ page 23 ).
Special tools and workshop equipment required
♦ Removal wedge - 3409-

♦ Protector - VAS 871 001-

Note:
The seat assembly device - VAS 281 003- can be used to lift out
the front seat. Refer to the instructions provided.
Checking seat longitudinal adjustment motor -V28- / -V31-
– Move front seat as far upwards as it will go.
• To avoid unnecessary repair costs, check the electrical/elec‐
tronic components and wiring before removing the front seat
any further.
– Perform the following checks:
♦ Check fuse ⇒ Current flow diagrams, Electrical fault finding
and Fitting locations.
♦ Check voltage at connector point and perform Fault Finding if
necessary ⇒ Current flow diagrams, Electrical fault finding and
Fitting locations.
♦ Check voltage at seat longitudinal adjustment motor ⇒ Current
flow diagrams, Electrical fault finding and Fitting locations.
♦ Check voltage at seat adjustment operating unit and perform
Fault Finding if necessary ⇒ Current flow diagrams, Electrical
fault finding and Fitting locations.
– If fuse is defective, it must be renewed ⇒ Current flow dia‐
grams, Electrical fault finding and Fitting locations.
– Repair or renew wire if there is no voltage ⇒ Current flow dia‐
grams, Electrical fault finding and Fitting locations.
– If operating unit -E470- / -E471- is defective, it must be re‐
newed ⇒ page 46 .
– If control unit -J136- / -J521- is defective, it must be renewed
⇒ page 48 (not always fitted).
– If seat longitudinal adjustment motor is defective, seat pan
must be renewed ⇒ page 9 .
Removing if seat longitudinal adjustment motor -V28- / -V31- is
defective
– If necessary, remove mounting for fire extinguisher
⇒ page 43 .
– If necessary, remove control unit for seat functions
⇒ page 48 .

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– If necessary, remove compressor for pneumatic system

⇒ page 93 .
– Unclip cable retainer -4- at fasteners.

WARNING
Risk of airbag being triggered
Risk of injury
– Check whether airbag warning lamp is on or is flashing.
– If airbag warning lamp is on or flashing, event memory must
be read out.
– If event memory shows entry »Short to positive«, battery
must be disconnected ⇒ Electrical system; Rep. gr. 27 ;
Battery; Disconnecting and connecting battery .
– Always follow instructions in Guided Fault Finding ⇒ Vehicle
diagnostic tester if there is an entry in the event memory.
– If airbag warning lamp does not light up or flash or if there is
no event memory entry »Short to positive«, switch off ignition
and wait 10 seconds with ignition key outside vehicle.

CAUTION
It is possible to trigger pyrotechnic components unintentionally.
Risk of injury
– Discharge static electricity by briefly touching door striker
plate.

– Unplug electrical connectors at connector point in floor.

1 - For equipment version with Rear Seat Entertainment
2 - Side airbag
3 - Belt buckle/seat position sensor
5 - Power supply
6 - For equipment version with seat heating
– Remove seat rail cover (sill side) ⇒ page 38 .

– Unclip retainer (rear) -2- for wire routing from seat pan using
a flat-bladed screwdriver.
– Unplug electrical connector -1- from seat longitudinal adjust‐
ment motor.
– Move electrical wiring clear -arrow-.

22 Rep. gr.72 - Seat frames

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– Unscrew bolts -1 and 2- and detach defective seat longitudinal

adjustment motor -3- with bracket.
– Remove accessible bolts for seat rails.
– Push front seat towards front/rear and unscrew accessible
bolts for seat rails.

– Before lifting out front seat, attach protector - VAS 871001- to

protect sill panel trim.
– Lift front seat out of vehicle with the assistance of a second
mechanic.
– Renew seat pan ⇒ page 9 .
– Install front seat ⇒ page 20 .

1.8 Attaching front seat to seat repair stand

Special tools and workshop equipment required
♦ Engine and gearbox support - VAS 6095A-

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♦ Seat repair stand - VAS 6136-

Procedure
• Seat removed from vehicle ⇒ page 17
– Attach seat repair stand - VAS 6136- to engine and gearbox
support - VAS 6095- .
– Attach seat to seat repair stand - VAS 6136- .

1.9 Removing and installing backrest

• The following components have to be renewed after removal
⇒ page 7 .
Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Convenience seat: Remove backrest cover panel
⇒ page 26 .
– Remove seat frame trim (tunnel side) ⇒ page 33 .
– Remove seat frame trim (sill side) and bracket:
♦ Standard seat/sports seat/super sports seat ⇒ page 34
♦ Convenience seat ⇒ page 35
– If fitted, unscrew bolts -arrows- and detach child seat anchor
-1- from front seat.
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
Note:
There is a continuous wiring harness between the connector point
and the side airbag.

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Depending on equipment version:

– Press catch -arrow A- and unplug electrical connector -1-.
– Lift catch slightly with a small flat-bladed screwdriver
-arrow B- and disconnect pneumatic line -2-.

– Lift catch slightly with a small flat-bladed screwdriver -arrow-

and disconnect pneumatic lines -1- to seat bolster adjusters
on both sides of seat.

Continued:
– Unscrew bolts -1 and 3- (left and right) from backrest fitting.
– If fitted, detach fastener -2- for bracket.
– Unfasten and detach backrest from seat pan (to do so, guide
out electrical wiring harnesses).
Installing
Installation is carried out in reverse order; note the following:
– Install front seat ⇒ page 20 .
Tightening torques
♦ ⇒ “1.2 Exploded view - backrest”, page 7

1.10 Removing and installing backrest cover

panel
⇒ “1.10.1 Removing and installing backrest cover panel - stand‐
ard/sports seat”, page 25
⇒ “1.10.2 Removing and installing backrest cover panel - con‐
venience seat”, page 26

1.10.1 Removing and installing backrest cover

panel - standard/sports seat
Special tools and workshop equipment required

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♦ Removal lever - 80-200-

♦ Protective gloves
Removing
– Move front seat to centre position and move backrest to up‐
right position.

CAUTION
Danger of injury caused by sharp edges
Risk of hand injuries
– Put on protective gloves.

– Reach behind backrest cover panel -1- with your hand and pull
side of cover panel firmly off outer backrest frame towards
rear.
Note:
If it is difficult to detach, release side retaining hooks with removal
lever - 80-200- .
– Repeat procedure on opposite side.
– Pull off backrest cover panel further and bend it until top fas‐
teners have disengaged from outer backrest frame.
– Pull backrest cover panel upwards out of fasteners at bottom
of outer backrest frame -2-.
Installing
Installation is carried out in reverse order; note the following:
– Check whether backrest cover panel is engaged completely.
• It should no longer be possible to easily pull off backrest cover
panel.

1.10.2 Removing and installing backrest cover

panel - convenience seat
Special tools and workshop equipment required

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♦ Removal lever - 80-200-

Removing
– Move front seat to centre and as far up as possible and move
backrest to upright position.
– Disengage tensioning straps -arrows- at bottom of seat pan.

– Reach behind backrest cover panel -1- with your hand and pull
side of cover panel firmly off backrest cover panel towards rear
-arrow A-.
– Repeat procedure on other side -arrow B-.
– Pull backrest cover panel off further until bottom fasteners be‐
come disengaged from outer backrest frame -arrow C-.

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– If necessary, disengage bottom fasteners -1- at outer backrest

frame using a large flat-bladed screwdriver -arrow-.

– Pull backrest cover panel -1- upwards out of hooks on outer

backrest frame and remove.
– To do so, press top of backrest cover panel firmly forwards
towards backrest at points shown -arrows A- and at the same
time pull backrest cover panel downwards off backrest
-arrow B-.
Installing
Installation is carried out in reverse order; note the following:
– Check whether backrest cover panel is engaged completely.
• It should no longer be possible to easily pull off backrest cover
panel.

1.11 Removing and installing spring mat

Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove seat cover and padding at backrest ⇒ page 123 .
– Disengage extension springs -A ... D- at outer backrest frame
-1-.
Note:
You can also leave the extension springs -A ... D- attached to the
outer backrest frame -1- and disengage the spring mat -2- directly
at the extension springs.
– Swivel spring mat -2- forwards.
– Pull spring mat out of openings in outer backrest frame.
Installing
Installation is carried out in reverse order; note the following:
– Assign extension springs as shown.
– Install front seat ⇒ page 20 .

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1.12 Removing and installing backrest ad‐

justment unit
Special tools and workshop equipment required
♦ Assembly tool - 3399-

Removing
– Move front seat as far forwards and upwards as it will go.
– Turn backrest adjuster knob -1- until detent is visible from rear
-arrow A-.
– Hook assembly tool - 3399- into detent and prise off adjuster
knob -arrow B-.
– Turn backrest adjuster knob a further 120 ° and repeat proce‐
dure.
– Detach backrest adjuster knob.
Installing
Installation is carried out in reverse order; note the following:
• Press adjuster knob on until it engages audibly.

1.13 Removing and installing lumbar support

adjustment motor -V125- / -V126- / -
V129- / -V130-
Special tools and workshop equipment required
♦ Special pop rivet pliers - V.A.G 1753B-

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♦ Electric drill
♦ Safety goggles
Removing
– Remove seat cover and padding at backrest ⇒ page 123 .
– Unplug electrical connectors -1 and 3- at longitudinal and
height adjustment motors of lumbar support.
– Cut through cable ties/unclip wiring harness at lumbar support
and move clear.

CAUTION
Risk of injury caused by flying metal shavings.
Eyes and skin can suffer irritation or injuries.
– Put on safety goggles.
– Put on protective gloves.

– Drill out rivet -arrow A-/remove bolt.

– Swivel lumbar support -2- out of outer backrest frame at bot‐
tom (towards front), disengage from outer backrest frame at
top -arrows B- and detach.
Installing
– Engage lumbar support -2- at top of outer backrest frame
-arrows B-, swivel to rear at bottom and insert in outer backrest
frame.
– Rivet lumbar support to outer backrest frame.
The remaining installation steps are carried out in the reverse se‐
quence.

1.14 Removing and installing front seat fans

⇒ “1.14.1 Removing and installing front seat fan - seat cushion”,
page 30
⇒ “1.14.2 Removing and installing front seat fan - backrest”, page
31

1.14.1 Removing and installing front seat fan -

seat cushion
Special tools and workshop equipment required
♦ Pop rivet nut pliers - VAS 5073-

♦ Hand-held drill/small grinder (commercially available)

♦ Safety goggles

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Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .

CAUTION
Risk of injury caused by flying metal shavings.
Eyes and skin can suffer irritation or injuries.
– Put on safety goggles.
– Put on protective gloves.

– Drill off pop rivets -arrows- or cut them off using small grinder.
– Detach cover -1- for fan.

– Unplug electrical connector -1-.

– Disengage tabs -2- of rubber sleeve from seat cushion fan.
– Spray silicone-free lubricant onto rubber retaining pins
-arrows- of flexible mounting for fan and detach fan from rub‐
ber retaining pins.
– Detach fan.
Installing
Installation is carried out in reverse order; note the following:

• Lip -1- of rubber sleeve must surround fan -2- completely and
seal it off.
– Install front seat ⇒ page 20 .

1.14.2 Removing and installing front seat fan -

backrest
Removing
– Remove backrest cover panel ⇒ page 26 .

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– Unplug electrical connector -2-.

– Disengage tabs -1- of rubber sleeve from backrest fan.
– Spray silicone-free lubricant onto rubber retaining pins
-arrows- of flexible mounting for fan and detach fan from rub‐
ber retaining pins.
– Detach fan.
Installing
Installation is carried out in reverse order; note the following:

• Lip -1- of rubber sleeve must surround fan -2- completely and
seal it off.

1.15 Removing and installing seat frame trim

⇒ “1.15.1 Removing and installing seat frame trim (front) - con‐
venience seat”, page 32
⇒ “1.15.2 Removing and installing seat frame trim (tunnel side)”,
page 33
⇒ “1.15.3 Removing and installing seat frame trim (sill side) -
standard/sports/super sports seat”, page 34
⇒ “1.15.4 Removing and installing seat frame trim (sill side) - con‐
venience seat”, page 35

1.15.1 Removing and installing seat frame trim

(front) - convenience seat
Removing
– Move front seat as far back and upwards as it will go.
– Retract seat depth adjustment towards rear.
– Unbolt front seat and tilt it towards rear with electrical wiring
connected ⇒ page 17 .
– Unclip fasteners of seat frame trim (front) -1- one after the
other from bracket.
– To do so, push seat frame trim (front) upwards, hold it in po‐
sition and at the same time release retaining hooks -arrows-
using a flat-bladed screwdriver.
Installing
Installation is carried out in reverse order; note the following:
• Press seat frame trim on until it engages audibly.
– Install front seat ⇒ page 20 .

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1.15.2 Removing and installing seat frame trim

(tunnel side)
Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
Convenience seat:
– Disengage tensioning straps for backrest cover panel
-arrows- from bottom of seat pan.

– Reach behind backrest cover panel -1- with your hand and pull
side of cover panel firmly off backrest cover panel towards rear
-arrow A-.
– Repeat procedure on other side -arrow B-.
– Pull backrest cover panel off further until bottom fasteners be‐
come disengaged from outer backrest frame -arrow C-.

Continued:
– Remove spreader rivets -1 and 3-.
– Disengage seat frame trim -2- from front of seat pan
-arrow A-.
– Disengage seat frame trim from rear of backrest fitting
-arrow B- and detach.
Installing
Installation is carried out in reverse sequence.

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1.15.3 Removing and installing seat frame trim

(sill side) - standard/sports/super sports
seat
Removing
– Move front seat as far upwards as it will go.
– Depending on equipment version: Remove backrest adjuster
knob ⇒ page 29 .
– Depending on equipment version: Remove seat height ad‐
juster ⇒ page 39 .
– Release retaining hooks -1- using a flat-bladed screwdriver.
– Remove spreader rivet -3-.
– Disengage seat frame trim -2- from bracket at rear -arrow A-.
– Pull seat frame trim upwards off bracket -arrows B-.

– Depending on equipment version: Press release mechanism

and unplug electrical connectors.
1, 2 - Seat adjustment operating unit -E470- / -E471-
3 - Lumbar support adjustment switch -E663- / -E664-
– Move electrical wiring harness clear.
– Detach seat frame trim (sill side).

– If necessary, unscrew bolts -arrows- and detach bracket -1-

for seat frame trim.
Installing
Installation is carried out in reverse order; note the following:
• Slide electrical connectors on as far as stop so that they en‐
gage audibly.
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

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1.15.4 Removing and installing seat frame trim

(sill side) - convenience seat
Removing
– Move front seat as far upwards as it will go.
– Disengage tensioning straps for backrest cover panel
-arrows- from bottom of seat pan.

– Reach behind backrest cover panel -1- with your hand and pull
side of cover panel firmly off backrest cover panel towards rear
-arrow A-.
– Repeat procedure on other side -arrow B-.
– Pull backrest cover panel off further until bottom fasteners be‐
come disengaged from outer backrest frame -arrow C-.

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– Remove spreader rivet -3-.

– Open tab -1- with a flat-bladed screwdriver.
– Disengage seat frame trim -2- from bracket at rear -arrow A-.
– Unclip seat frame trim from bracket and pull it off upwards
-arrows B-.
– Press release catches and unplug electrical connectors.

– If necessary, unscrew bolts -arrows- and detach bracket -1-

for seat frame trim.
Installing
Installation is carried out in reverse order; note the following:
• Slide electrical connectors on as far as stop so that they en‐
gage audibly.
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

1.16 Removing and installing bracket for seat

frame trim/control unit/compressor
Removing
– Unbolt front seat and tilt it towards rear with electrical wiring
connected ⇒ page 17 .
– Unclip control unit for seat functions and move it to side with
electrical wiring connected ⇒ page 48 .
Standard seat/sports seat/super sports seat:
– Press pin -arrow- towards seat padding and out of bracket.
– Remove pin (pressed out) from seat pan.
– Unclip support bracket for bracket from seat pan using a flat-
bladed screwdriver.
– Disengage bracket -1- from seat pan at rear and detach it.

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Convenience seat:
– Remove compressor for pneumatic system ⇒ page 93 .
– Remove seat frame trim (front) ⇒ page 32 .
– Disengage coupling hooks -1, 2- for seat cover.
– Remove bolts -arrows A-.
– Pull bracket for seat frame trim/control unit/compressor -3- out
of guides towards front -arrow B-.
Installing

– Slide in bracket for trim (front) -arrows-, making sure that tabs
-1- engage in retainers -2, 3, 4-.
Perform remaining installation steps in reverse order of removal;
observe the following:
– Install front seat ⇒ page 20 .
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

1.17 Removing and installing seat rail cover

⇒ “1.17.1 Removing and installing seat rail cover (front and rear)”,
page 37
⇒ “1.17.2 Removing and installing seat rail cover (sill side)”, page
38

1.17.1 Removing and installing seat rail cover

(front and rear)
Special tools and workshop equipment required
♦ Removal wedge - 3409-

Removing
– Move front seat as far upwards as it will go.

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– Cover (front): Using flat-bladed screwdriver or removal wedge

- 3409- , prise spindle cover -1- off seat rail cover -2- and spin‐
dle for seat longitudinal adjustment.

– Lift inside of cover -1- slightly off seat rail -arrow A- by hand or
with a flat-bladed screwdriver and pull it off towards front
-arrow B-.
Installing
Installation is carried out in reverse order; note the following:
• Slide on cover until it engages audibly.

1.17.2 Removing and installing seat rail cover

(sill side)
Removing
– Move front seat as far upwards as it will go.
– Remove bolt/stud -3- and detach fastener -2- from seat rail
cover (centre) -1-.

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– Release retaining hook on rear of seat rail using a flat-bladed

screwdriver -arrow-.
– Slide seat rail cover (sill side) -1- in direction of travel and re‐
move cover.
Installing
Installation is carried out in reverse sequence.

1.18 Removing and installing seat height ad‐

justment unit
Special tools and workshop equipment required
♦ Removal wedge - 3409-

♦ Puller - T10055-

Removing
– Move front seat as far forwards and upwards as it will go.
– Remove seat height adjuster from seat towards side -arrow-
using removal wedge - 3409- .

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Note:
If adjuster cannot be pulled off, proceed as follows:
– Insert removal wedge - 3409- between adjuster -1- and seat
frame trim -2-.
– Protect seat frame trim with a piece of cloth -3- before applying
puller -T10055- .
– Apply puller - T10055- to adjuster as shown, and pull adjuster
off seat -arrow-.

– To remove adapter -1- for seat height adjustment, remove seat

frame trim (sill side) ⇒ page 34 .
– Remove bolts -arrows- and detach adapter.
Installing
Installation is carried out in reverse order; note the following:
• Before pressing on lever, check whether retaining spring is
inserted in seat height adjustment adapter.
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

1.19 Removing and installing seat longitudi‐

nal adjustment handle
• The following components have to be renewed after removal
⇒ page 9 .
Removing
– Move front seat as far back and upwards as it will go.
– To release handle, insert flat-bladed screwdriver between
handle -1- and handle mounting -2-.
– Press seat longitudinal adjustment handle off handle mounting
-arrow-.
Installing
Installation is carried out in reverse sequence.

1.20 Removing and installing seat rake ad‐

justment unit
• The following components have to be renewed after removal
⇒ page 13 .
Removing
– Move front seat as far upwards as it will go.
– Unbolt front seat and tilt it towards rear with electrical wiring
connected ⇒ page 17 .

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NOTICE
Risk of damage to bearing bush in adjustment spindle if handled
incorrectly.
The bush cannot be renewed using workshop equipment. The
relevant components must be renewed if the bush is damaged.
– Proceed with caution when unscrewing and screwing in bolt
-1- for adjustment spindle/seat pan.

– Unscrew bolt -1- for adjustment spindle of seat rake adjust‐

ment motor.
– Unplug electrical connector -2- at seat rake adjustment motor.
– Remove bolts -4- and detach seat rake adjustment motor -3-.
Installing
Installation is carried out in reverse sequence.
Notes for installation: tightening torques, renewing components
etc. ⇒ “1.4 Exploded view - seat rake adjuster”, page 13

1.21 Removing and installing carrier for seat

depth adjuster - convenience seat
Removing
– Extend seat depth adjuster towards front.
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove bracket for seat frame trim/control unit/compressor
⇒ page 36 .
– Pull trim -1- for seat depth adjuster off towards front -arrow- on
both sides.

– Disengage piping -arrow- for cover at seat depth adjuster.

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– Disengage rubber straps -1- at bottom of seat depth adjuster

-arrow A- (both sides) and secure with cable ties so that they
do not slide out of position.

– Release retaining tabs -2 and 3- and lift cover for seat depth
adjuster slightly together with seat cover and padding.

– Release fasteners -arrows- one after the other using a flat-

bladed screwdriver and pull carrier -1- for seat depth adjuster
off towards front.
Installing
Installation is carried out in reverse order; note the following:
• Press carrier for seat depth adjuster on until it engages audi‐
bly.
– Install front seat ⇒ page 20 .

1.22 Removing and installing trim for seat

depth adjuster
Removing
– Extend seat depth adjuster towards front.
– Unbolt front seat and tilt it towards rear with electrical wiring
connected ⇒ page 17 .
– If fitted, remove bracket for fire extinguisher ⇒ page 43 .

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– Release retaining hooks -arrows- at seat trim (front) -1-.

– Disengage seat trim (front) -1- downwards -arrows-.

– Release fastener -1- with a flat-bladed screwdriver and pull

grip -2- for seat depth adjuster off grip mounting -arrow-.
Installing
Installation is carried out in reverse order; note the following:
• Press trim for seat depth adjuster on until it engages audibly.
– Install front seat ⇒ page 20 .

1.23 Removing and installing bracket for fire

extinguisher
Removing
– Move front seat as far back and upwards as it will go.
– Take fire extinguisher out of bracket.
– Remove bolts -1, 3-.
– Detach bracket -2- with fire extinguisher.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

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1.24 Removing and installing head restraint

Special tools and workshop equipment required
♦ Scraper no. 1 from scraper set - VAS 6845-

Removing
– Move front seat as far forwards and down as possible and tilt
backrest to approx. 45°.
– Fully raise head restraint.
– Press release tab -4- -arrow A- on head restraint guide (left-
side), and at the same time press trim collar -1- down onto
release ring -3- -arrow B-.
– Keep release ring pressed and pull head restraint -2- upwards
out of fastener.

Note:
If head restraint cannot be released, proceed as follows:
– Unclip trim collar (left-side) -1- using scraper -arrow- and slide
it upwards.

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– Head restraint guide (left-side): Apply scraper to release ring

-2-.
– Press release tab -3- forwards by hand or with flat-bladed
screwdriver -arrow A- and at the same time press down re‐
lease ring with scraper -arrow B-.
– Keep release ring pressed with scraper and pull head restraint
-1- upwards out of fastener.
Note:
It is not easy to pull head restraint off.
Installing
Installation is carried out in reverse order; note the following:
• Head restraint must be locked in head restraint guides.

1.25 Removing and installing head restraint

guide
Removing
– Remove seat cover and padding at backrest ⇒ page 123 .
– Remove insert -2- for outer backrest frame by releasing catch
-1- and swivelling insert out towards rear -arrow-.

– Press retaining catches down simultaneously -arrows-.

– Pull head restraint guide -1- out upwards.
Installing
Installation is carried out in reverse order; note the following:
• Guide lug of head restraint guide must engage in recess of
mounting on outer backrest frame.
• Press head restraint guide on until all retaining catches en‐
gage fully in outer backrest frame.

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1.26 Connecting and disconnecting modular

wiring
• Observe safety precautions ⇒ General body repairs, interior;
Rep. gr. 00 ; Safety precautions; Safety precautions when
working on pyrotechnic components .
Removing individual wire
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Using a flat-bladed screwdriver, release retaining hook -2- and
open cable retainer (rear) -1- for wire routing at seat pan.
– Detach corrugated tube -3- from cable retainer.

– Release retaining hook -3- and open cable retainer (front)

-1- with a flat-bladed screwdriver.
– Detach cable retainer from corrugated tube -2-.
– Separate two halves of corrugated tube.
– To remove an individual wire, sever the corresponding cable
tie (if necessary).
– When renewing a defective wire, refer to ⇒ Electrical system;
Rep. gr. 97 ; Connectors; Repairing electrical wiring harness‐
es and electrical connectors .
– Cut through cable tie and remove individual wire.
Installing individual wires
Installation is carried out in reverse order; note the following:
– Take care not to twist any wires when bunching and inserting
the individual wires.
• Re-attach all cable ties, cable retainers and retaining clips at
the same locations when re-installing.
• Slide electrical connectors on as far as stop so that they en‐
gage audibly.
– Install front seat ⇒ page 20 .

1.27 Removing and installing seat adjust‐

ment operating unit -E470- / -E471-
Special tools and workshop equipment required

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♦ Removal wedge - 3409-

Removing
– Prise seat adjustment actuators -1, 2- off fasteners using re‐
moval wedge - 3409- .
– Remove seat frame trim (sill side):
♦ Standard seat/sports seat/super sports seat ⇒ page 34
♦ Convenience seat ⇒ page 35

– Remove bolts -arrows-.

– Detach operating unit -1- from seat frame trim (sill side).
Installing
Installation is carried out in reverse order; note the following:
• Press actuators on until they engage audibly.
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

1.28 Removing and installing switch/switch

module for front seat
Depending on vehicle equipment, driver seat lumbar support ad‐
justment switch - E176- / front passenger seat lumbar support
adjustment switch - E177- or switch module for driver seat -
E663- / switch module for front passenger seat - E664- may be
fitted.
Removing
– Remove seat frame trim (sill side):
♦ Standard seat/sports seat/super sports seat ⇒ page 34
♦ Convenience seat ⇒ page 35

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– Unscrew bolts -arrows- and detach switch module -1-.

Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

1.29 Removing and installing control unit for

seat functions
Removing
– Switch off ignition.
– Unbolt front seat and tilt it towards rear with electrical wiring
connected ⇒ page 17 .
Standard seat/sports seat/super sports seat:
– Release retaining tabs -arrows-.
– Detach control unit -1- from bracket.
– Release catch and unplug electrical connectors -2-.

Convenience seat:
– Release retaining tabs -arrows-.
– Detach control unit -1- from bracket.
– Release catch and unplug electrical connectors -2-.
Installing
– If control unit has been renewed, make sure to plug in the
electrical connectors in the correct order.

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– First plug in electrical connector -5- (coding connector) and

then the remaining connectors -1 … 4-.
Perform remaining installation steps in reverse order of removal;
observe the following:
– Install front seat ⇒ page 20 .

1.30 Removing and installing carrier for mul‐

timedia system display unit
Special tools and workshop equipment required
♦ Removal lever - 80-200-

♦ Removal wedge - 3409-

Removing
– Detach multimedia system display unit.
– Unclip trim -1- using removal wedge - 3409- -arrows- and de‐
tach.
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove seat cover and padding at backrest ⇒ page 123 .

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– Unclip retainer -1- for electrical wiring from mount.

– Unclip electrical connector -2- from carrier.
– Remove bolts -arrows- and detach mount -3-.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “1.2 Exploded view - backrest”, page 7

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2 Rear seats
⇒ “2.1 Exploded view - rear seat bench”, page 51
⇒ “2.2 Exploded view - rear seat backrest”, page 53
⇒ “2.3 Exploded view - centre armrest”, page 55
⇒ “2.4 Exploded view - locking mechanism”, page 57
⇒ “2.5 Exploded view - head restraint and head restraint guide”,
page 58
⇒ “2.6 Overview of fitting locations - electrical and electronic com‐
ponents”, page 60
⇒ “2.7 Removing and installing rear seat bench”, page 60
⇒ “2.8 Removing and installing rear seat backrest”, page 62
⇒ “2.9 Removing and installing backrest with load-through hatch”,
page 65
⇒ “2.10 Removing and installing trim for backrest with load-
through hatch”, page 66
⇒ “2.11 Removing and installing outer bearing sleeve”,
page 66
⇒ “2.12 Removing and installing inner pivot pin”, page 67
⇒ “2.13 Removing and installing centre bracket”, page 67
⇒ “2.14 Removing and installing backrest remote release mech‐
anism”, page 68
⇒ “2.15 Removing and installing locking mechanism for rear seat
backrest”, page 69
⇒ “2.16 Removing and installing trim for locking mechanism”,
page 70
⇒ “2.17 Removing and installing lock cylinder”, page 71
⇒ “2.18 Removing and installing rear seat fan”, page 72
⇒ “2.19 Removing and installing centre armrest”, page 73
⇒ “2.20 Removing and installing centre armrest storage compart‐
ment (rear)”, page 74
⇒ “2.21 Removing and installing frame for centre armrest insert”,
page 74
⇒ “2.22 Removing and installing trim for centre console insert”,
page 75
⇒ “2.23 Removing and installing cover (top) for centre armrest”,
page 76
⇒ “2.24 Removing and installing cup holder”, page 77
⇒ “2.25 Removing and installing head restraint”, page 79
⇒ “2.26 Removing and installing head restraint guide”,
page 82
⇒ “2.27 Removing and installing control unit for seat adjustment”,
page 84

2.1 Exploded view - rear seat bench

2. Rear seats 51
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1 - Rear seat bench

❑ With moulded section
❑ Removing and installing
⇒ page 60
2 - Retainers
❑ For securing rear seat
bench
❑ 2x or 3x
❑ Clipped into vehicle
floor
❑ Renew if rear seat
bench is removed
3 - Cover
❑ For child seat anchor
❑ 4x
❑ Removing and installing
⇒ page 60
4 - Guide
❑ For child seat anchor
❑ 4x
❑ Removing and installing
⇒ page 60
5 - Connector point
❑ Depending on version

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2.2 Exploded view - rear seat backrest

⇒ “2.2.1 Exploded view - rear seat backrest”, page 53
⇒ “2.2.2 Exploded view - individual rear seat backrest, country-
specific version”, page 54

2.2.1 Exploded view - rear seat backrest

1 - Bolt
❑ 2x
❑ 33 Nm
2 - Fixed backrest
❑ Saloon only
❑ Depending on version
❑ Removing and installing
⇒ page 62
3 - Outer bearing sleeve
❑ Folding backrest only
❑ Removing and installing
⇒ page 66
❑ Insert in outer backrest
frame and press on as
far as stop
4 - Folding backrest
❑ With load-through hatch
on right side
❑ Removing and installing
⇒ page 62
5 - Locking pin
❑ For backrest with load-
through hatch
❑ 8 Nm
6 - Backrest with load-through
hatch
❑ Removing and installing
⇒ page 65
7 - Washer
❑ Folding backrest (right-
side) only
8 - Inner bearing sleeve
9 - Pivot pin
❑ Removing and installing ⇒ page 67
❑ 15 Nm
10 - Bolt
❑ 8 Nm
11 - Retaining clip
❑ For centre bracket
❑ Folding backrest only
❑ Removing and installing ⇒ page 67
12 - Centre bracket
❑ Folding backrest only

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❑ Removing and installing ⇒ page 67

13 - Bolt
❑ 4x
❑ 20 Nm
14 - Bolt
❑ 3x
❑ 30 Nm
15 - Retaining bracket
❑ For fixed backrest
❑ 3x
❑ Riveted to body

2.2.2 Exploded view - individual rear seat backrest, country-specific version

1 - Bolt
❑ 2x
❑ 45 Nm
2 - Electrically operated indi‐
vidual rear seat backrest
❑ Depending on version
❑ Removing and installing
⇒ page 63
3 - Fixed individual rear seat
backrest
❑ Depending on version
❑ Removing and installing
⇒ page 63
4 - Bracket
❑ For fixed individual rear
seat backrest
❑ Welded to back panel
5 - Clips
❑ For fixed individual rear
seat backrest
❑ Clip into bracket
6 - Bolts
❑ For electrically operated
individual rear seat
backrest
❑ 24 Nm
7 - Guide
❑ For electrically operated
individual rear seat
backrest
❑ 2x
❑ Clip into body
8 - Connector point
❑ Depending on version

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2.3 Exploded view - centre armrest

⇒ “2.3.1 Exploded view - centre armrest”, page 55
⇒ “2.3.2 Exploded view - centre armrest, country-specific ver‐
sion”, page 56

2.3.1 Exploded view - centre armrest

1 - Intermediate padding
❑ Bottom
❑ Removing and installing
⇒ page 145
2 - Trim
❑ For backrest with load-
through hatch
❑ Removing and installing
⇒ page 66
3 - Centre armrest
❑ Removing and installing
⇒ page 73
4 - Cup holder
❑ Removing and installing
⇒ page 77
5 - Bolt
❑ 2x
❑ 3.5 Nm
6 - Lining for cup holder
❑ 2x
7 - Nut
❑ 2x
❑ 2 Nm
8 - Intermediate padding
❑ Top
❑ Removing and installing
⇒ page 146
9 - Trim
❑ For locking mechanism
❑ Clip into backrest with
load-through hatch
❑ Press on until it engages audibly
10 - Washers
11 - Bolt
❑ 2x
❑ 8.5 Nm
12 - Backrest with load-through hatch
❑ Removing and installing ⇒ page 65
13 - Bolt
❑ 2x
❑ 2 Nm

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2.3.2 Exploded view - centre armrest, country-specific version

1 - Trim
❑ For cup holder
❑ Clip into cup holder
2 - Cup holder
❑ Removing and installing
⇒ page 77
❑ Insert and press on as
far as stop
3 - Trim cover
❑ Removing and installing
⇒ page 74
❑ Push on until it engages
audibly
4 - Bolt
❑ 2x
❑ 1.5 Nm
5 - Bolt
❑ 4x
❑ 1.5 Nm
6 - Storage compartment
(front)
❑ Depending on version
❑ Removing and installing
⇒ page 75
7 - Bolt
❑ 4x
❑ 1.5 Nm
8 - Frame
❑ For centre armrest in‐
sert
❑ Removing and installing ⇒ page 74
9 - Bolt
❑ 4x
❑ 1.5 Nm
10 - Trim
❑ For storage compartment (front)
❑ “Low” equipment version
❑ Removing and installing ⇒ page 75
11 - Trim
❑ For centre armrest insert
❑ “Middle” equipment version
❑ Removing and installing ⇒ page 75
12 - Trim
❑ For centre armrest insert
❑ “High” equipment version
❑ Removing and installing ⇒ page 75

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13 - Storage compartment (rear)

❑ Removing and installing ⇒ page 74
❑ Insert and press on until it engages audibly
14 - Cover (top)
❑ For centre armrest
❑ Removing and installing ⇒ page 76
15 - Bolt
❑ Equipment version
❑ 2x
❑ 1.5 Nm
16 - Centre armrest (rear)
❑ Removing and installing ⇒ page 73
17 - Bolt
❑ 10x
❑ 8 Nm

2.4 Exploded view - locking mechanism

1 - Bowden cable
❑ For backrest remote re‐
lease mechanism
❑ Equipment version
❑ Clipped onto outer
backrest frame
2 - Locking mechanism
❑ For folding backrest
❑ Depending on version
❑ Removing and installing
⇒ page 69
3 - Trim
❑ For locking mechanism
❑ Depending on version
❑ Removing and installing
⇒ page 70
❑ Push on until it engages
audibly
4 - Lock cylinder
❑ Saloon only
❑ Depending on version
❑ Removing and installing
⇒ page 71
❑ Remove protective cap
before installing lock
cylinder
❑ Push on until it engages
audibly
5 - Cap
❑ Different versions
❑ Push on until it engages
audibly

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6 - Bolt
❑ Equipment version
❑ 2.5 Nm
7 - Bolts
❑ 25 Nm
8 - Backrest remote release mechanism
❑ Depending on version
❑ Removing and installing ⇒ page 68
❑ Clipped into vehicle floor

2.5 Exploded view - head restraint and head

restraint guide
⇒ “2.5.1 Exploded view - head restraint and head restraint guide”,
page 58
⇒ “2.5.2 Exploded view - head restraint and head restraint guide,
country-specific version”, page 59

2.5.1 Exploded view - head restraint and head restraint guide

1 - Head restraint guide

❑ Left-side
❑ Equipment version: 2+1
seats
❑ With button for adjusting
height of head restraint
❑ Removing and installing
⇒ page 83
❑ Renew after removing
2 - Head restraint guide
❑ Right-side
❑ Equipment version: 2+1
seats
❑ With retaining spring
❑ Removing and installing
⇒ page 83
❑ Renew after removing
3 - Head restraint
❑ Centre
❑ Equipment version: 2+1
seats
❑ Removing and installing
⇒ page 79
4 - Head restraint
❑ On outside
❑ Removing and installing
⇒ page 79
5 - Head restraint guide
❑ Left-side
❑ With button for adjusting
height of head restraint

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❑ Removing and installing ⇒ page 82

6 - Head restraint guide
❑ Right-side
❑ With retaining spring
❑ Removing and installing ⇒ page 82

2.5.2 Exploded view - head restraint and head restraint guide, country-specific
version

1 - Head restraint guide

❑ Left-side
❑ For fixed individual rear
seat backrest
❑ With button for adjusting
height of head restraint
❑ Removing and installing
⇒ page 82
2 - Head restraint guide
❑ Right-side
❑ For fixed individual rear
seat backrest
❑ With retaining spring
❑ Removing and installing
⇒ page 82
3 - Head restraint
❑ On outside
❑ Removing and installing
⇒ page 80
4 - Head restraint
❑ Centre
❑ 2+1 seats
❑ Removing and installing
⇒ page 81
5 - Head restraint
❑ On outside
❑ Removing and installing
⇒ page 80
6 - Trim collars
❑ For electrically operated
individual rear seat
backrest
7 - Head restraint guides
❑ For electrically operated individual rear seat backrest
❑ With retaining spring
❑ Removing and installing ⇒ page 82

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2.6 Overview of fitting locations - electrical and electronic components

1 - Seat cushion fan

♦ Rear left seat cushion fan 1
- V522- / rear right seat
cushion fan 1 - V526-
❑ Removing and installing
⇒ page 72
2 - Valve block for lumbar sup‐
port
❑ Depending on version
♦ Valve block 1 in driver side
rear seat - N479- / valve
block 1 in rear seat, pas‐
senger side - N481-
❑ Removing and installing
⇒ page 106
3 - Backrest fan
♦ Rear left seat backrest fan
1 - V520- / rear right seat
backrest fan 1 - V524-
❑ Removing and installing
⇒ page 72
4 - Valve block for massage
function
❑ Depending on version
♦ Valve block 2 in driver side
rear seat - N480- / valve
block 2 in rear seat, pas‐
senger side - N482-
❑ Removing and installing
⇒ page 106
5 - Backrest adjustment motor
♦ Backrest adjustment motor
for left seat, row 2 - V346-
with rear seat backrest adjustment sender, driver side - G1057- , backrest adjustment motor for right seat,
row 2 - V353- with rear seat backrest adjustment sender, passenger side - G1058-
❑ Integrated into outer backrest frame; if defective, renew outer backrest frame ⇒ page 144
6 - Seat adjustment control unit
♦ Control unit for rear seat adjustment, driver side - J876- / control unit for rear seat adjustment, passenger
side - J877-
❑ Removing and installing ⇒ page 84
7 - Compressor for pneumatic system
❑ Depending on version
♦ Compressor for rear driver side multicontour seat - V441- / compressor for rear passenger side multicontour
seat - V442-
❑ Removing and installing ⇒ page 105

2.7 Removing and installing rear seat bench

• The following components have to be renewed after removal
⇒ page 51 .

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Removing
– Move front seats as far forwards as they will go.
– Unclip cover -1- for child seat anchor from anchor -arrow- and
detach.

– Press guide -1- for child seat anchor downwards into recess
and disengage from anchor -2-.
– Take guide for child seat anchor out towards front -arrow-.
– Repeat procedure at other guides for child seat anchors.

– Reach underneath moulded section of rear seat bench -1- on

one side with both hands.
– Using both hands, pull rear seat bench firmly and abruptly up‐
wards on one side -arrow A- to disengage moulded section
from mounting (front).
– Repeat procedure in centre -arrow B- and on opposite side of
rear seat bench -arrow C-.
– Press side of rear seat bench towards rear and pull it upwards
to disengage moulded section from mounting.
– Depending on equipment version: Unplug electrical connec‐
tors.
– Remove rear seat bench.
Installing
Installation is carried out in reverse order; note the following:
– Fit rear seat bench, guide in belt buckles and press moulded
section firmly into mountings.
• Moulded section must engage completely in mountings.
• Rear seat bench must engage completely in mountings.
• Guide must be seated firmly in anchor.

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2.8 Removing and installing rear seat back‐

rest
⇒ “2.8.1 Removing and installing fixed rear seat backrest”,
page 62
⇒ “2.8.2 Removing and installing folding rear seat backrest”, page
62
⇒ “2.8.3 Removing and installing individual rear seat backrest”,
page 63

2.8.1 Removing and installing fixed rear seat

backrest
Removing
– Remove bolts -1- in luggage compartment.
– Remove rear seat bench ⇒ page 60 .

– Remove bolts -1-.

– First, release backrest at top forwards. Then detach backrest
upwards and forwards at bottom edge -arrow-.
– Disengage Bowden cable for manual release of rear lid.
– Take backrest out of vehicle.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.2.1 Exploded view - rear seat backrest”, page 53

2.8.2 Removing and installing folding rear

seat backrest
Removing
– Move front seats as far forwards as they will go.
– Remove rear seat bench ⇒ page 60 .
– Folding backrest (right-side, 2+1 seats): Remove centre belt
end fitting (rear) ⇒ General body repairs, interior; Rep. gr. 69 ;
Seat belts; Exploded view - centre three-point seat belt (rear) .

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Equipment version with backrest remote release mechanism:

NOTICE
Risk of irreparable damage to backrest remote release mech‐
anism if handled incorrectly
Idler roller may fall out.
– When removing and installing the Bowden cable, do NOT
take the idler roller out of the connector point.

– Open cover and disengage Bowden cable support bracket

-3- from mounting on connector point -arrow-.
– Disengage nipple -2- of Bowden cable from idler roller -1- and
close cover again.
Continued:
– Fold down rear seat backrests.

– Remove bolt -1-.

– Swivel retaining clip -2- forwards and at the same time disen‐
gage it downwards from centre bracket -arrow-.
– Lift rear seat backrest slightly.

– Lift rear seat backrest -1- out of centre bracket on inside

-arrow A-.
– Pull rear seat backrest out of outer mounting towards centre
of vehicle -arrow B-.
– Remove backrest.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.2.1 Exploded view - rear seat backrest”, page 53

2.8.3 Removing and installing individual rear

seat backrest
Special tools and workshop equipment required
♦ Protector - VAS 871 001-
♦ Removal wedge no. 26 from removal wedge set - VAS 895
015-
Removing
– Remove rear seat bench ⇒ page 60 .

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– Press release catch and unplug electrical connector -2- (if fit‐
ted).
– Move connector -1- and electrical wiring for rear seat backrest
heating clear -arrows-.
Electrically operated individual rear seat backrest:
– Press release catch and unplug electrical connector -3-.
– Move electrical wiring clear -arrows-.

– In luggage compartment, unclip caps -1- using removal wedge

no. 26 from removal wedge set - VAS 895 015- .
– Unscrew bolts -arrows- underneath.

– Remove bolts -arrows A-.

– Pull rear seat backrest -1- forwards -arrow B- out of guide.

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Fixed individual rear seat backrest:

– Remove bolts -arrows A-.
– Push rear seat backrest -1- upwards slightly and take it out of
mounting at rear -arrow B-.

Continued:
– Before lifting out rear seat, attach protector - VAS 871 001- to
protect sill panel trim.
– Take rear seat backrest out of vehicle.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.2.2 Exploded view - individual rear seat backrest, country-
specific version”, page 54

2.9 Removing and installing backrest with

load-through hatch
Removing
– Remove folding backrest (right-side) ⇒ page 62 .
– Remove bolt -arrow A-.
– Release backrest with load-through hatch from rear seat back‐
rest (right-side).
– Pull backrest with load-through hatch -2- off rear seat backrest
(right-side) -1- -arrow B- and detach it.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.2.1 Exploded view - rear seat backrest”, page 53

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2.10 Removing and installing trim for back‐

rest with load-through hatch
Removing
– Remove backrest with load-through hatch ⇒ page 65 .
– Remove centre armrest ⇒ page 73 .
– Remove intermediate padding (top) ⇒ page 146 .
– Remove intermediate padding (bottom) ⇒ page 145 .
– Remove clips -arrows- from pull rod using a flat-bladed screw‐
driver.
– Disengage and detach pull rod -1- for backrest latch.

– Unscrew bolts and nuts -arrows-.

– Disengage trim -1- from backrest with load-through hatch -2-
and detach it.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.1 Exploded view - centre armrest”, page 55

2.11 Removing and installing outer bearing

sleeve
Special tools and workshop equipment required

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♦ Removal wedge - 3409-

Removing
– Remove folding backrest ⇒ page 62 .
– Unclip bearing sleeve -1- from rear seat backrest; take care
not to damage cover.
Installing
Installation is carried out in reverse order; note the following:
• Insert bearing sleeve in outer backrest frame and press on as
far as stop.

2.12 Removing and installing inner pivot pin

Removing
– Remove folding backrest from centre bracket ⇒ page 67 .
– Folding backrest (right-side): Unscrew pivot pin -3- and re‐
move together with bearing sleeve -2- and washer -1-.
– Folding backrest (left-side): Detach abrasion guard -4-, un‐
screw pivot pin -5- and remove together with bearing sleeve
-6-.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.2.1 Exploded view - rear seat backrest”, page 53

2.13 Removing and installing centre bracket

Removing
– Remove rear seat bench ⇒ page 60 .
– Fold backrests forwards.

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– Remove bolt -1-.

– Swivel retaining clip -2- forwards and at the same time disen‐
gage it downwards from centre bracket -arrow-.
Note:
It is sufficient to disengage the folding backrests from the mount‐
ings.

– Lift floor covering slightly and remove bolts -arrows-.

– Disengage and detach centre bracket -1-.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.2.1 Exploded view - rear seat backrest”, page 53

2.14 Removing and installing backrest re‐

mote release mechanism
Removing
– Remove seat bench ⇒ page 60 .
– Remove luggage compartment side trim ⇒ General body re‐
pairs, interior; Rep. gr. 70 ; Luggage compartment trim panels;
Removing and installing luggage compartment side trim .
Removing operating lever:
– Release fasteners -arrows- one after the other and detach op‐
erating lever -1-.
Removing Bowden cable:

NOTICE
Risk of irreparable damage to backrest remote release mech‐
anism if handled incorrectly
Idler roller may fall out.
– When removing and installing the Bowden cable, do NOT
take the idler roller out of the connector point.

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– Open cover and disengage Bowden cable support bracket

-3- from mounting on connector point -arrow-.
– Disengage nipple -2- of Bowden cable from idler roller -1-.
– Close cover again and unclip connector point from retaining
pin.

– Unclip retainers -1, 2- for Bowden cable and detach Bowden

cable -3- with connector point.
Installing
Installation is carried out in reverse sequence.

2.15 Removing and installing locking mech‐

anism for rear seat backrest
Removing
– Remove folding backrest ⇒ page 62 .
– Remove head restraint ⇒ page 79 .
– Remove padding from folding backrest in area of locking
mechanism ⇒ page 142 .
Equipment version with backrest remote release mechanism:
– Unclip Bowden cable -1- at bracket -5- on rear seat backrest.
– Disengage Bowden cable at locking mechanism -2-
-arrow A-.
– Disengage nipple -4- of Bowden cable from release handle
-3- -arrow B- and detach Bowden cable.

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Continued:
– Remove bolts -3-.
– Detach locking mechanism -2- from outer backrest frame -1-.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.4 Exploded view - locking mechanism”, page 57

2.16 Removing and installing trim for locking

mechanism
Special tools and workshop equipment required
♦ Removal wedge - 3409-

Removing
– Release folding backrest.
– Make sure button -2- (indicator) is in »top« position.
– Using removal wedge - 3409- , press fasteners in direction of
-arrows- on both sides of trim.
– At the same time lift trim -1- off rear seat backrest -3-.

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– Lift trim -1- at front as far as possible off rear seat backrest.
– Using flat-bladed screwdriver, prise catch -arrow- at rear of
trim out of locking mechanism.
– Lift trim off rear seat backrest.
Installing
Installation is carried out in reverse order; note the following:
• Press on trim until it engages audibly.
• Make sure that button moves freely after trim has been instal‐
led.

2.17 Removing and installing lock cylinder

Removing
– Remove trim for locking mechanism with lock cylinder
⇒ page 70 .
– Make sure indicator is in »top« position.

NOTICE
Risk of irreparable damage to lock cylinder if handled incorrect‐
ly.
Tumblers and springs may fall out.
– Only remove and install lock cylinder with key properly in‐
serted.

– Release catches -1- with a flat-bladed screwdriver and press

lock cylinder -3- with key -2- out of trim -4-.
Installing
– Insert key -2- into new lock cylinder -3-.
– Pull protective cap off new lock cylinder.
– Insert lock cylinder into trim -4- until it engages (pay attention
to correct installation position of lug).
Note:
The illustration shows the trim for the folding backrest (left-side)
as an example.
• Trim for folding backrest (left-side): Lug -arrow- on lock cylin‐
der faces towards right (as seen in direction of travel).
• Trim for folding backrest (right-side): Lug -arrow- on lock cyl‐
inder faces towards left (as seen in direction of travel).
Perform remaining installation steps in reverse order of removal;
observe the following:
– Check function after installing.
– To do so, engage folding backrest and turn key 90°.
• The backrest should lock.

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2.18 Removing and installing rear seat fan

⇒ “2.18.1 Removing and installing rear seat fan - seat cushion”,
page 72
⇒ “2.18.2 Removing and installing rear seat fan - backrest”, page
72

2.18.1 Removing and installing rear seat fan -

seat cushion
Removing
– Remove rear seat bench ⇒ page 60 .
– Unplug electrical connector -2-.
– Disengage tabs -1- of rubber seal from seat cushion fan.
– Spray silicone-free lubricant onto rubber retaining pins
-arrows- of flexible mounting for fan and detach fan from rub‐
ber retaining pins.
– Detach fan -3-.
Installing
Installation is carried out in reverse order; note the following:

• Lip -1- of rubber seal must surround fan -2- completely and
seal it off.

2.18.2 Removing and installing rear seat fan -

backrest
Removing
– Remove individual seat backrest ⇒ page 63 .
– Disengage valve block for massage function ⇒ page 106 .
– Unplug electrical connector -2-.
– Disengage tabs -1- of rubber seal from backrest fan.
– Spray silicone-free lubricant onto rubber retaining pins
-arrows- of flexible mounting for fan and detach fan from rub‐
ber retaining pins.
– Detach fan -3-.
Installing
Installation is carried out in reverse order; note the following:

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• Lip -1- of rubber seal must surround fan -2- completely and
seal it off.

2.19 Removing and installing centre armrest

⇒ “2.19.1 Removing and installing centre armrest”, page 73
⇒ “2.19.2 Removing and installing centre armrest - country-spe‐
cific version”, page 73

2.19.1 Removing and installing centre armrest

Removing
– Release backrest with load-through hatch -2- and fold it down
towards front slightly.
– Fold down centre armrest.
– Remove bolts -arrows-.
– Disengage centre armrest -1- from backrest with load-through
hatch and detach it.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.1 Exploded view - centre armrest”, page 55

2.19.2 Removing and installing centre armrest

- country-specific version
Removing
– Remove head restraint (centre) ⇒ page 81 .
– Remove individual rear seat backrests ⇒ page 63 .
– Remove centre armrest cover (top) ⇒ page 76 .

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– Remove bolts -arrows-.

– Disengage and detach centre armrest -2-.
– If fitted, unplug electrical connectors -1- for centre armrest.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.2 Exploded view - centre armrest, country-specific ver‐
sion”, page 56

2.20 Removing and installing centre armrest

storage compartment (rear)
Special tools and workshop equipment required
♦ Wedges - T10383-

Removing
– Fold down centre armrest (rear).
– Fold up lid.
– Unclip storage compartment -1- from centre armrest -arrow-
using wedge - T10383/1- .
– If fitted, remove connection for external audio sources - R199-
⇒ Communication; Rep. gr. 91 ; Connection for external
multimedia devices .
– Depending on equipment version: Unplug electrical connec‐
tor.
– Remove storage compartment.
Installing
Installation is carried out in reverse sequence.

2.21 Removing and installing frame for cen‐

tre armrest insert
Special tools and workshop equipment required

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♦ Scraper no. 1 from scraper set - VAS 6845-

Removing
– Fold down centre armrest and open lid.
– Using scraper from -VAS 6845- , unclip trim cover -1-
-arrow- and detach it.
– Remove centre armrest storage compartment ⇒ page 74 .

– Remove bolts -arrows-.

– Lift out frame -1- with centre armrest insert.
– Press release catches and unplug electrical connectors (if fit‐
ted).
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.2 Exploded view - centre armrest, country-specific ver‐
sion”, page 56

2.22 Removing and installing trim for centre

console insert
Special tools and workshop equipment required
♦ Scraper no. 1 from scraper set - VAS 6845-

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Removing
– Remove centre armrest storage compartment ⇒ page 74 .
– Remove frame for centre armrest insert ⇒ page 74 .
– If necessary, remove additional display and operating unit 1 -
E857- in centre armrest ⇒ Communication; Rep. gr. 91 ;
Infotainment system; Overview of fitting locations - infotain‐
ment system .
– If necessary, remove operating unit for rear seat adjustment -
E920- in centre armrest ⇒ Electrical system; Rep. gr. 96 ;
Controls ; Overview of fitting locations - controls in rear centre
armrest.
– Depending on equipment version: Unscrew bolts -arrows- and
detach storage compartment -1-.

– Remove bolts -arrows-.

– Release fasteners -1- and detach trim -2- for insert from frame.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.2 Exploded view - centre armrest, country-specific ver‐
sion”, page 56

2.23 Removing and installing cover (top) for

centre armrest
Removing
– Remove head restraint ⇒ page 81 .
– Remove individual rear seat backrests ⇒ page 63 .
– If fitted, remove bolt -2- (left and right).
– Disengage cover -1- from retaining pins -3- on sides.
– Pull cover forwards off centre armrest -arrows- and detach.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.2 Exploded view - centre armrest, country-specific ver‐
sion”, page 56

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2.24 Removing and installing cup holder

⇒ “2.24.1 Removing and installing cup holder”, page 77
⇒ “2.24.2 Removing and installing cup holder - country-specific
version”, page 77

2.24.1 Removing and installing cup holder

Removing
– Fold down centre armrest.
– Open cup holder -1- and remove lining -2-.
– Remove bolts -arrows-.

– Remove plugs -2- for drilled holes -arrows A-.

– Loosen bolt -1- approx. three turns through drilled holes.
– Pull cup holder -3- slightly towards front, disengage it upwards
and remove -arrow B-.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.1 Exploded view - centre armrest”, page 55

2.24.2 Removing and installing cup holder -

country-specific version
Special tools and workshop equipment required

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♦ Wedges - T10383-

Removing
– Fold down centre armrest and open lid.
– Remove frame for centre armrest insert ⇒ page 74 .
– Unclip trim panels -1, 2- at front of centre armrest -arrows-
using wedge - T10383/1- .

– Remove bolts -4-.

– Press trim panels -2, 3- for centre armrest slightly to side and
pull cup holder -1- towards front out of centre armrest
-arrow-.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.3.2 Exploded view - centre armrest, country-specific ver‐
sion”, page 56

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2.25 Removing and installing head restraint

⇒ “2.25.1 Removing and installing head restraint”, page 79
⇒ “2.25.2 Removing and installing outer head restraint - country-
specific version”, page 80
⇒ “2.25.3 Removing and installing centre head restraint - country-
specific version”, page 81

2.25.1 Removing and installing head restraint

Removing
– Using a small flat-bladed screwdriver, press locking spring as
far as it will go in opening -arrow- of head restraint guide -1-.
– At the same time, pull head restraint -2- as far as possible out
of rear seat backrest -3- and hold it in position.

– Press release button -3- for height adjustment at head restraint

guide -4- -arrow-, pull head restraint -1- out of rear seat back‐
rest -2- and detach it.
Installing
Installation is carried out in reverse order; note the following:
• Press head restraint on until it engages audibly.

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2.25.2 Removing and installing outer head re‐

straint - country-specific version
Removing - fixed individual rear seat backrest
– Using a small flat-bladed screwdriver, press locking spring as
far as it will go in opening -arrow- of head restraint guide -1-.
– At the same time, pull head restraint -2- as far as possible out
of rear seat backrest -3- and hold it in position.

– Press release button -3- for height adjustment at head restraint

guide -4- -arrow-, pull head restraint -1- out of rear seat back‐
rest -2- and detach it.

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Removing - electrically operated individual rear seat backrest

– Remove individual rear seat backrest ⇒ page 63 .
– Remove seat adjustment control unit ⇒ page 84 .
– Release retaining spring -1- -arrow A- and pull head restraint
-2- out of rear seat backrest -arrow B-.
Installing
Installation is carried out in reverse order; note the following:
• Press head restraint on until it engages audibly.

2.25.3 Removing and installing centre head re‐

straint - country-specific version
Removing
– Fold down centre armrest.
– Carefully prise out stop strip -2- in centre armrest using a flat-
bladed screwdriver and pull it off.
– Fold up head restraint.
– Using a flat-bladed screwdriver, press securing clip -1-
through opening in direction of -arrow A- and pull head re‐
straint -3- upwards out of fastener -arrow B-.
– Pull head restraint out of mounting and detach.
Installing
Installation is carried out in reverse order; note the following:
• Press head restraint on until it engages audibly.

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2.26 Removing and installing head restraint

guide
⇒ “2.26.1 Removing and installing head restraint guide at outer
backrest”, page 82
⇒ “2.26.2 Removing and installing head restraint guide at outer
backrest - country-specific version”, page 82
⇒ “2.26.3 Removing and installing head restraint guide - folding
backrest (centre), 2+1 seats”, page 83

2.26.1 Removing and installing head restraint

guide at outer backrest
Removing
– Remove head restraint (rear) ⇒ page 79 .
– Detach cover and padding from outer backrest frame
⇒ page 139 .
– Fold cover and padding -1- upwards until head restraint post
-3- with head restraint guide -2- is visible.
– Press in retaining tabs of head restraint guide with pliers
-arrows A- and at the same time pull head restraint guide out
of outer backrest frame -arrow B-.
Installing
Installation is carried out in reverse order; note the following:
• Press head restraint guide into outer backrest frame until it
engages fully.

2.26.2 Removing and installing head restraint

guide at outer backrest - country-specif‐
ic version
Removing
– Remove individual rear seat backrest ⇒ page 63 .
– Remove head restraint (rear) ⇒ page 80 .
– Detach cover and padding from outer backrest frame
⇒ page 144 .

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Fixed individual rear seat backrest:

– Fold cover and padding -1- upwards until head restraint guides
-2- are visible.
– Press in retaining tabs -3- of head restraint guide -arrows A-,
and at the same time pull head restraint guide out of outer
backrest frame -arrows B-.

Electrically operated individual rear seat backrest:

– Fold cover and padding downwards until head restraint guides
-2- are visible.
– Press in retaining tabs -1- of head restraint guide -arrows A-,
and at the same time pull head restraint guide out of outer
backrest frame -arrows B-.
Installing
Installation is carried out in reverse order; note the following:
• Press head restraint guide into outer backrest frame until it
engages fully.

2.26.3 Removing and installing head restraint

guide - folding backrest (centre), 2+1
seats
• The following components have to be renewed after removal
⇒ page 58 .
Special tools and workshop equipment required
♦ Hook - 3438-

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Removing
– Remove head restraint (rear) ⇒ page 79 .
– Using a waterproof felt-tip pen, make a mark -2- on hook -
3438- approximately 80 mm (dimension -a-) from tip of hook.
– Guide hook - 3438- into head restraint guide -arrow- from
above as far as marking and insert in opening -1- on retaining
catch.

– Turn hook - 3438- 90° -arrow A-.

• Hook must not slip out of opening.
Note:
Turning the hook causes the retaining catch to be bent away to
one side, i.e. it is no longer engaged.
– Pull head restraint guide out of backrest using hook
-arrow B-.
Installing
Installation is carried out in reverse order; note the following:
– Insert head restraint guide and press into mountings until re‐
taining tabs engage properly with outer backrest frame.
• Press head restraint guide into outer backrest frame until it
engages fully.

2.27 Removing and installing control unit for

seat adjustment
Removing
– Remove individual rear seat backrest ⇒ page 63 .
– If necessary, disengage rubber tabs for backrest cover from
outer backrest frame.

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– Release retaining tabs -1- with a flat-bladed screwdriver

-arrows-.
– Detach control unit -3- from bracket -4-.
– Release catch and unplug electrical connectors -2-.
Installing
– If control unit has been renewed, make sure to plug in the
electrical connectors in the correct order.

– First plug in electrical connector -5- (coding connector) and

then the remaining connectors -1 … 4-.
The remaining installation steps are carried out in the reverse se‐
quence.

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3 Front seat pneumatic system

⇒ “3.1 Connection diagram - pneumatic system, convenience
seat”, page 86
⇒ “3.2 Exploded view - pneumatic system”, page 87
⇒ “3.3 Checking pneumatic system”, page 88
⇒ “3.4 Severing and connecting pneumatic lines”, page 92
⇒ “3.5 Servicing pneumatic lines”, page 93
⇒ “3.6 Removing and installing compressor for pneumatic sys‐
tem”, page 93
⇒ “3.7 Removing and installing lumbar support with air cushions
- module with valve block and backrest bolster adjusters”,
page 94
⇒ “3.8 Removing and installing air cushion for seat bolster ad‐
justment”, page 95
⇒ “3.9 Removing and installing valve block for massage function”,
page 96
⇒ “3.10 Removing and installing massage mat”, page 97

3.1 Connection diagram - pneumatic system, convenience seat

1 - Compressor for pneumatic

system
♦ Compressor for multi-con‐
tour driver seat - V439- /
compressor for multi-con‐
tour front passenger seat -
V440-
2 - Seat bolster adjuster
❑ Right-side
3 - Seat bolster adjuster
❑ Left-side
4 - Backrest bolster adjuster
❑ Left-side
5 - Valve block for lumbar sup‐
port
❑ For lumbar support and
seat bolster adjustment
♦ Valve block 2 in driver seat
- N476- / valve block 2 in
front passenger seat -
N478-
6 - Pneumatic lumbar support
❑ Module with lumbar
support air cushions
7 - Backrest bolster adjuster
❑ Right-side
8 - Valve block for massage
function
❑ Depending on version
♦ Valve block 1 in driver seat
- N475- / valve block 1 in

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front passenger seat - N477-

9 - Massage mat
❑ Depending on version
❑ In padding

3.2 Exploded view - pneumatic system

♦ Connection diagram - pneumatic system, convenience seat
⇒ page 86

1 - Rubber retaining pin

❑ For compressor
❑ Insert in seat pan
❑ 2x
2 - Rubber retaining pin
❑ For compressor
❑ Insert in seat pan
3 - O-ring
❑ Renew after removing
4 - Seat bolster adjuster
❑ Only supplied together
with bracket
⇒ Item 17 (page 10)
❑ Removing and installing
⇒ page 95
5 - O-ring
❑ Renew after removing
6 - Clip
❑ For securing massage
mat
❑ 2x
❑ Renew after removing
7 - Massage mat
❑ Depending on version
❑ Removing and installing
⇒ page 97
8 - Valve block for massage
function
❑ Depending on version
♦ Valve block 1 in driver seat
- N475- / valve block 1 in front passenger seat - N477-
❑ Removing and installing ⇒ page 96
9 - Bolt
❑ Not fitted
10 - Backrest bolster adjuster
❑ Only supplied together with ⇒ Item 11 (page 87)
❑ Removing and installing ⇒ page 94
11 - Lumbar support
❑ Module with air cushions, valve block and backrest bolster adjuster

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❑ Removing and installing ⇒ page 94

12 - Valve block for lumbar support
❑ For lumbar support and seat bolster adjustment
♦ Valve block 2 in driver seat - N476- / valve block 2 in front passenger seat - N478-
❑ Only supplied together with ⇒ Item 11 (page 87)
❑ Removing and installing ⇒ page 94
13 - Backrest bolster adjuster
❑ Only supplied together with ⇒ Item 11 (page 87)
❑ Removing and installing ⇒ page 94
14 - Bolt
❑ 2x
❑ 2.5 Nm
15 - Bolt
❑ 3.5 Nm
16 - O-ring
❑ Renew after removing
17 - Seat bolster adjuster
❑ Only supplied together with bracket ⇒ Item 17 (page 10)
❑ Removing and installing ⇒ page 95
18 - O-ring
❑ Renew after removing
19 - Compressor for pneumatic system
♦ Compressor for multi-contour driver seat - V439- / compressor for multi-contour front passenger seat - V440-
❑ Removing and installing ⇒ page 93

3.3 Checking pneumatic system

⇒ “3.3.1 Preparation for leak test for lumbar support air cushions
and seat bolster adjuster”, page 88
⇒ “3.3.2 Preparation for leak test for compressor and pressure
line”, page 90

3.3.1 Preparation for leak test for lumbar sup‐

port air cushions and seat bolster ad‐
juster
♦ If there is a corresponding entry in the event memory, the
“Guided Fault Finding” routine prompts the user to replace the
defective lumbar support air cushion with the pressure expan‐
sion tank -VAS 6618/10- ⇒ Vehicle diagnostic tester.
♦ The preparations for this leak test, which have to be performed
directly at the seat, are described in the following.
♦ Connection diagram with allocation of pneumatic lines to air
cushions ⇒ page 86
Special tools and workshop equipment required
♦ Vehicle diagnostic tester
♦ Pneumatic repair set - VAS 6618 A-
Procedure
• Backrest cover panel removed ⇒ page 25

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– Before severing pneumatic lines, mark allocation of lines with

a waterproof felt-tip pen.
– Sever pneumatic line going to defective air cushion at corre‐
sponding position indicated by -arrow-.
• Line connectors fitted during repair work must not be opened
again.
• If it is necessary to sever a pneumatic line on a seat on which
a line connector has already been fitted, the new line connec‐
tor must be fitted approx. 30 mm from the existing one.

To make it easier to distinguish the pneumatic lines, they are

shown in colour in the illustration and indicated accordingly in the
table; the lines are not colour-coded in the vehicle.
Item Colour Leading to component
1 Blue Backrest bolster adjuster (left-side)
2 Yellow Seat bolster (left-side)
3 Yellow Seat bolster (right-side)
4 Blue Backrest bolster adjuster (right-side)
5 Green Lumbar support (bottom)
6 Red Lumbar support (centre)
7 Blue Lumbar support (top)
8 Black Compressor

– To connect pneumatic lines, attach connecting sleeves from -

VAS 6618- to pneumatic lines.
• To connect pneumatic lines, insert lines in connecting sleeves
-VAS 6618/2- from both sides -arrows A-.
• To disconnect pneumatic lines, press release rings
-arrows B- and at the same time disconnect lines -arrows C-.

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– Connect pressure expansion tank -VAS 6618/10- to line going

to air cushion.
Note:
The illustration shows the test on the right-side seat bolster.
– Connect pneumatic lines after completing leak test
⇒ page 92 .

3.3.2 Preparation for leak test for compressor

and pressure line
♦ If there is a corresponding entry in the event memory, the
“Guided Fault Finding” routine prompts the user to perform a
leak test ⇒ Vehicle diagnostic tester.
♦ The preparations for this leak test, which have to be performed
directly at the front seat, are described in the following.
♦ Connection diagram with allocation of pneumatic lines to air
cushions ⇒ page 86
Special tools and workshop equipment required
♦ Turbocharger tester - V.A.G 1397A-

♦ Cutting pliers - VAS 6228-

♦ Pneumatic repair set - VAS 6618 A-

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♦ Vehicle diagnostic tester

Procedure
• Backrest cover panel removed ⇒ page 25
• To perform the test, the pneumatic line from the compressor
is not disconnected at the connection; instead it is severed
according to the procedure described ⇒ page 92 .
• To connect the pneumatic lines during the leak test, insert the
lines in the connecting sleeves -VAS 6618/2- from both sides
-arrows A-.
• To disconnect pneumatic lines, press release rings
-arrows B- and at the same time disconnect lines -arrows C-.

In one of the test steps in the “Guided Fault Finding” routine, you
will be prompted to connect the turbocharger tester - V.A.G
1397B- to the pneumatic line leading to the valve block -N476- /
-N478- .
– Sever pneumatic line -arrow- to valve block.

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– Connect turbocharger tester - V.A.G 1397A- or -V.A.G 1397B-

to pneumatic line -2- from compressor using hose sections
and adapters from pneumatic repair set - VAS 6618 A- .
1 - Valve block -N476- / -N478-
Note:
To connect the pneumatic lines, make an improvised test hose
from the pneumatic repair set - VAS 6618 A- .
– Connect pneumatic lines after completing leak test
⇒ page 92 .

3.4 Severing and connecting pneumatic

lines
Special tools and workshop equipment required
♦ Cutting pliers - VAS 6228-

♦ 2x assembly pliers -VAS 6618/1-

Severing pneumatic line
– Apply cutting pliers - VAS 6228- at right angle and cut through
pneumatic line -1-.

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Connecting pneumatic line

– Slide pneumatic lines -1- and -3- onto line connector -2- from
both sides using assembly pliers -VAS 6618/1- ; for line con‐
nector, refer to ⇒ Electronic parts catalogue .
– Then pull pneumatic lines to check that plug-in connector is
engaged properly.

3.5 Servicing pneumatic lines

♦ A repair set containing pneumatic lines and line connectors is
available for repairing pneumatic lines ⇒ Electronic parts
catalogue .
♦ Pneumatic lines must not be detached directly at the compo‐
nents. Always separate and connect pneumatic lines as de‐
scribed in this manual ⇒ page 92 .
♦ Protect pneumatic lines and line connectors against contami‐
nation.
♦ It is NOT permissible to heat pneumatic lines when connecting
them to the line connectors.
♦ It is NOT permissible to use lubricant when connecting the
pneumatic lines to the line connectors.
♦ After the repair, the serviced pneumatic line should be just as
long as the line was previously (tolerance: ± 10 mm).
♦ Contamination at the joints can lead to leaks. Therefore it is
important to make sure that the pneumatic system and test
instruments are clean when performing tests.

3.6 Removing and installing compressor for

pneumatic system
Removing
– Switch off ignition.
– Unbolt front seat and tilt it towards rear with electrical wiring
connected ⇒ page 17 .

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– Pull rubber retaining pins off brackets on compressor -1-

-arrows-.

– Press catch -arrow A- and unplug electrical connector -1-.

– Lift catch slightly with a small flat-bladed screwdriver
-arrow B- and disconnect pneumatic line -2-.
Installing
– Press pneumatic line on until it engages audibly.
The remaining installation steps are carried out in the reverse se‐
quence.

3.7 Removing and installing lumbar support

with air cushions - module with valve
block and backrest bolster adjusters
Removing
– Remove seat cover and padding at backrest ⇒ page 127 .
– Press catch and unplug electrical connector -arrow A- at valve
block for lumbar support.
– Unclip electrical wiring from module carrier -arrows B- and
move it clear.
– Remove bolt -1- for module carrier.

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– Remove bolt -1-.

– Disengage backrest bolster adjuster -2- from outer backrest
frame -arrow- and move pneumatic line clear.
– Repeat procedure on opposite side.

– Swivel module carrier -1- with lumbar support air cushions for‐
wards, disengage from mountings -arrows- and detach it to‐
gether with backrest bolster adjusters -2, 3-.
– Move pneumatic lines clear and guide them out.
Installing
– If necessary, cut off pneumatic lines of new valve block using
old valve block as a guide and connect them ⇒ page 92 .
The remaining installation steps are carried out in the reverse se‐
quence.
Tightening torques
♦ ⇒ “3.2 Exploded view - pneumatic system”, page 87

3.8 Removing and installing air cushion for

seat bolster adjustment
Removing
– Remove front seat ⇒ page 17 .
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
– Remove backrest ⇒ page 24 .
– Remove seat padding with cover ⇒ page 118 .

3. Front seat pneumatic system 95

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– Unclip upholstery wire -2- from bracket -3- for air cushion for
seat bolster adjustment -arrow-.
– Disengage and detach upholstery wire.
– Remove fastener -1-.

– Lift bracket -2- with air cushion for seat bolster adjustment at
front slightly -arrow A- and disengage ridge -1- at seat pan.
– At the same time, disengage retaining hook -3- of bracket for
seat bolster adjuster at front of seat pan -arrow B-.
– Disengage retaining hook -4- at rear of seat pan -arrow C- and
detach bracket for seat bolster adjuster.
Installing
– Check retaining hooks -3, 4- for damage.
Perform remaining installation steps in reverse order of removal;
observe the following:
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9
♦ ⇒ “3.2 Exploded view - pneumatic system”, page 87

3.9 Removing and installing valve block for

massage function
Valve block 1 in driver seat - N475- / valve block 1 in front pas‐
senger seat - N477-
Removing
• Backrest cover panel removed ⇒ page 26
– Press catch -arrow B- and unplug electrical connector -2- on
valve block for massage function.
– Lift catch slightly with a small flat-bladed screwdriver
-arrow A- and disconnect pneumatic line -1-.

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– Unclip valve block -1- for massage function from module car‐
rier -arrows A-.
– Disengage valve block for massage function downwards out
of module carrier -arrows B-.

– Press release tabs -arrows- and unplug pneumatic line con‐

nectors -1, 2, 3- from valve block for massage function.
– Detach valve block for massage function.
Installing
– Press pneumatic line connectors on until they engage audibly.
– Attach double-sided adhesive tape in original locations of ad‐
hesive bonds, as found during removal.
The remaining installation steps are carried out in the reverse se‐
quence.

3.10 Removing and installing massage mat

• The following components have to be renewed after removal
⇒ page 87 .
Removing
– Detach seat cover and padding ⇒ page 129 .
– If necessary, release heating element -1- at bottom from ad‐
hesive bond in area of padding (centre).
– Fold back or lift foam pieces -2, 3, 4- -arrows- with heating
element and release them from adhesive bond if necessary.

3. Front seat pneumatic system 97

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– Remove clips -arrows-.

– Guide pneumatic lines and their connectors (top and bottom)
out of padding.
– Remove massage mat -1-.
Installing
– Guide in pneumatic line connectors and pneumatic lines
through padding.
– Re-apply adhesive bonds in same locations as prior to remov‐
al.
Perform remaining installation steps in reverse order of removal;
observe the following:
• Press pneumatic line connectors on until they engage audibly.
• Pull lines to check that plug-in connectors are engaged prop‐
erly.

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4 Rear seat pneumatic system

⇒ “4.1 Connection diagram - pneumatic system”, page 99
⇒ “4.2 Exploded view - pneumatic system”, page 100
⇒ “4.3 Checking pneumatic system”, page 100
⇒ “4.4 Severing and connecting pneumatic lines”, page 104
⇒ “4.5 Removing and installing compressor for pneumatic sys‐
tem”, page 105
⇒ “4.6 Removing and installing lumbar support - module with air
cushions and valve block”, page 106
⇒ “4.7 Removing and installing valve block for massage function”,
page 106
⇒ “4.8 Removing and installing massage mat”, page 107

4.1 Connection diagram - pneumatic system

1 - Compressor for pneumatic

system
♦ Compressor for rear driver
side multicontour seat -
V441- / compressor for rear
passenger side multicon‐
tour seat - V442-
2 - Massage mat
❑ Integrated into backrest
padding
3 - Valve block for lumbar sup‐
port
♦ Valve block 1 in driver side
rear seat - N479- / valve
block 1 in rear seat, pas‐
senger side - N481-
4 - Pneumatic lumbar support
❑ Module with lumbar
support air cushions
5 - Valve block for massage
function
♦ Valve block 2 in driver side
rear seat - N480- / valve
block 2 in rear seat, pas‐
senger side - N482-
❑ Depending on version

4. Rear seat pneumatic system 99

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4.2 Exploded view - pneumatic system

1 - Massage mat
❑ with
♦ Valve block 2 in driver side
rear seat - N480- / valve
block 2 in rear seat, pas‐
senger side - N482-
❑ Removing and installing
⇒ page 107
❑ Press pneumatic line
connectors on until they
engage audibly
❑ Pull lines to check that
plug-in connectors are
engaged properly
2 - Lumbar support
❑ Module with air cush‐
ions
❑ with
♦ Valve block 1 in driver side
rear seat - N479- / valve
block 1 in rear seat, pas‐
senger side - N481-
❑ Removing and installing
⇒ page 106
3 - Rubber retaining pin
❑ For compressor
4 - Compressor for pneumatic
system
♦ Compressor for rear driver
side multicontour seat -
V441- / compressor for rear
passenger side multicon‐
tour seat - V442-
❑ Removing and installing
⇒ page 105
5 - Rubber retaining pin
❑ For compressor
6 - Bolt
❑ 6.5 Nm

4.3 Checking pneumatic system

⇒ “4.3.1 Preparation for leak test for lumbar support air cushions”,
page 100
⇒ “4.3.2 Preparation for leak test for compressor and pressure
line”, page 102

4.3.1 Preparation for leak test for lumbar sup‐

port air cushions
♦ If there is a corresponding entry in the event memory, the
“Guided Fault Finding” routine prompts the user to replace the

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defective lumbar support air cushion with the pressure expan‐

sion tank -VAS 6618/10- ⇒ Vehicle diagnostic tester.
♦ The preparations for this leak test, which have to be performed
directly at the seat, are described in the following.
♦ Connection diagram with allocation of pneumatic lines to air
cushions ⇒ page 99
Special tools and workshop equipment required
♦ Vehicle diagnostic tester
♦ Pneumatic repair set - VAS 6618 A-
Procedure
• Individual rear seat backrest removed ⇒ page 63
– Before severing pneumatic lines, mark allocation of lines with
a waterproof felt-tip pen.
– Sever pneumatic line going to defective air cushion at corre‐
sponding position indicated by -arrow-.
• Line connectors fitted during repair work must not be opened
again.
• If it is necessary to sever a pneumatic line on a seat on which
a line connector has already been fitted, the new line connec‐
tor must be fitted approx. 30 mm from the existing one.

To make it easier to distinguish the pneumatic lines, they are

shown in colour in the illustration and indicated accordingly in the
table; the lines are not colour-coded in the vehicle.
Item Colour Leading to component
1 Blue Lumbar support (top)
2 Red Lumbar support (centre)
3 Green Lumbar support (bottom)
4 Black Compressor

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– To connect pneumatic lines, attach connecting sleeves from -

VAS 6618- to pneumatic lines.
• To connect pneumatic lines, insert lines in connecting sleeves
-VAS 6618/2- from both sides -arrows A-.
• To disconnect pneumatic lines, press release rings
-arrows B- and at the same time disconnect lines -arrows C-.

– Connect pressure expansion tank -VAS 6618/10- to line going

to air cushion.
Note:
The test is shown for the air cushion (bottom) as an example.
– Connect pneumatic lines after completing leak test
⇒ page 104 .

4.3.2 Preparation for leak test for compressor

and pressure line
♦ If there is a corresponding entry in the event memory, the
“Guided Fault Finding” routine prompts the user to perform a
leak test ⇒ Vehicle diagnostic tester.
♦ The preparations for this leak test, which have to be performed
directly at the seat, are described in the following.
♦ Connection diagram with allocation of pneumatic lines to air
cushions ⇒ page 99
Special tools and workshop equipment required

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♦ Turbocharger tester - V.A.G 1397A-

♦ Cutting pliers - VAS 6228-

♦ Pneumatic repair set - VAS 6618 A-

♦ Vehicle diagnostic tester
Procedure
• Individual rear seat backrest removed ⇒ page 63
• To perform the test, the pneumatic line from the compressor
is not disconnected at the connection; instead it is severed
according to the procedure described ⇒ page 104 .
• To connect the pneumatic lines during the leak test, insert the
lines in the connecting sleeves -VAS 6618/2- from both sides
-arrows A-.
• To disconnect pneumatic lines, press release rings
-arrows B- and at the same time disconnect lines -arrows C-.

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In one of the test steps in the “Guided Fault Finding” routine, you
will be prompted to connect the turbocharger tester - V.A.G
1397A- to the pneumatic line going from the compressor -1- to
the valve block -N479- / -N481- -item 2-.
– Sever pneumatic line -arrow- to valve block.

– Connect turbocharger tester - V.A.G 1397A- to pneumatic line

coming from compressor -1- using hose sections and adapters
from pneumatic repair set - VAS 6618 A- .
2 - Valve block -N479- / -N481-
Note:
To connect the pneumatic lines, make an improvised test hose
from the pneumatic repair set - VAS 6618 A- .
– Connect pneumatic lines after completing leak test
⇒ page 104 .

4.4 Severing and connecting pneumatic

lines
Special tools and workshop equipment required
♦ Cutting pliers - VAS 6228-

♦ Pliers -VAS 6618/1- (2x)

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Severing pneumatic line

– Apply cutting pliers - VAS 6228- at right angle and cut through
pneumatic line -1-.

Connecting pneumatic line

– Slide pneumatic lines -1- and -3- onto line connector -2- from
both sides using pliers -VAS 6618/1- .

4.5 Removing and installing compressor for

pneumatic system
Removing
– Switch off ignition.
– Individual rear seat backrest removed ⇒ page 63
– Pull rubber retaining pins -2, 4- off brackets on compressor
-1-.
– Carefully lift catch slightly using a small flat-bladed screwdriver
and detach pneumatic line -3-.
– Press catch and unplug electrical connector -arrow-.
Installing
Installation is carried out in reverse sequence.

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4.6 Removing and installing lumbar support

- module with air cushions and valve
block
Removing
– Individual rear seat backrest removed ⇒ page 63
– If fitted, remove cover (rear) in backrest.
– Depending on equipment version: Remove valve block for
massage function ⇒ page 106 .
– Depending on equipment version: Remove rear seat backrest
fan ⇒ page 72 .
– Remove backrest padding with backrest cover ⇒ page 144 .
– Carefully lift catch slightly using a small flat-bladed screwdriver
and detach pneumatic line -2-.
– Press catch and unplug electrical connector -4- at valve block
for lumbar support.
– Unclip electrical wiring from module carrier and move it clear.
– Remove bolt -1-.
– Swivel module carrier -3- with lumbar support air cushion for‐
wards at bottom, disengage it from outer backrest frame at top
-arrows- and detach it.
Installing
The remaining installation steps are carried out in the reverse se‐
quence.
Tightening torques
♦ ⇒ “4.2 Exploded view - pneumatic system”, page 100

4.7 Removing and installing valve block for

massage function
Valve block 2 in driver side rear seat - N480- / valve block 2 in
rear seat, passenger side - N482-
Removing
– Individual rear seat backrest removed ⇒ page 63
– Press catch -arrow B- and unplug electrical connector -2- on
valve block for massage function.
– Carefully lift catch slightly with a small flat-bladed screwdriver
-arrow A- and disconnect pneumatic line -1-.

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– Unclip valve block -1- for massage function from module car‐
rier -arrows A-.
– Disengage valve block for massage function downwards out
of module carrier -arrows B-.

– Press release tabs -arrows- and unplug pneumatic line con‐

nectors -1, 2, 3- from valve block for massage function.
– Detach valve block for massage function.
Installing
– Press pneumatic line connectors on until they engage audibly.
– Attach double-sided adhesive tape in original locations of ad‐
hesive bonds, as found during removal.
The remaining installation steps are carried out in the reverse se‐
quence.

4.8 Removing and installing massage mat

Removing
– Detach seat cover and padding ⇒ page 144 .
– If fitted, carefully unfasten heater element from adhesive bond
in area of padding (centre).
– Fold back or lift foam pieces -1, 2, 3- -arrows- and release them
from adhesive bond if necessary.

– Remove clips -arrows-.

– Guide pneumatic lines and their connectors (top and bottom)
out of padding.
– Remove massage mat -1-.
Installing
– Guide in pneumatic line connectors and pneumatic lines
through padding.
– Re-apply adhesive bonds in same locations as prior to remov‐
al.
The remaining installation steps are carried out in the reverse se‐
quence.

4. Rear seat pneumatic system 107

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74 – Seat - padding, covers

1 Covers and padding on front seats
⇒ “1.1 Exploded view - seat pan cover and padding”, page 108
⇒ “1.2 Exploded view - backrest cover and padding”, page 111
⇒ “1.3 Exploded view - seat heating elements”, page 112
⇒ “1.4 Removing and installing seat pan cover and padding”, page
113
⇒ “1.5 Separating seat pan cover and padding”, page 122
⇒ “1.6 Removing and installing backrest cover and padding”,
page 123
⇒ “1.7 Separating backrest cover and padding”, page 129
⇒ “1.8 Removing and installing seat heating element Z6 / Z8 ”,
page 130
⇒ “1.9 Removing and installing seat bolster heating element”,
page 131
⇒ “1.10 Removing and installing seat depth adjuster heating ele‐
ment”, page 132
⇒ “1.11 Removing and installing backrest heating element Z7 / Z9
”, page 132

1.1 Exploded view - seat pan cover and padding

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1 - Seat bolster padding

❑ Sports seat/super
sports seat/conven‐
ience seat
❑ Removing and installing
⇒ page 113
❑ Equipment version with
seat heating: When re‐
newing, bond on new
heating element
⇒ page 130
2 - Seat padding
❑ Sports seat/super
sports seat
❑ Removing and installing
cover and padding
⇒ page 115
❑ Separating cover and
padding ⇒ page 122
❑ Equipment version with
seat heating: When re‐
newing, bond on new
heating element
⇒ page 130
3 - Seat padding
❑ Standard seat
❑ Removing and installing
cover and padding
⇒ page 113
❑ Separating cover and
padding ⇒ page 122
❑ Equipment version with
seat heating: When re‐
newing, bond on new
heating element
⇒ page 130
4 - Piping
❑ Stitched to cover
❑ For engaging cover at seat pan
❑ Must be properly seated
5 - Upholstery clip
❑ For attaching cover to padding
❑ Renew after removing
❑ Re-attach at the same location using upholstery clip pliers - V.A.G 1634- when installing
6 - Piping
❑ Stitched to cover
❑ For engaging cover at seat pan
❑ Must be properly seated
7 - Seat cover
❑ Standard seat
❑ Removing and installing cover and padding ⇒ page 113
❑ Separating cover and padding ⇒ page 122
8 - Rubber tab
❑ Stitched to cover

1. Covers and padding on front seats 109

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❑ For tensioning cover; engaged in seat pan

9 - Seat cover
❑ Sports seat/super sports seat
❑ Removing and installing cover and padding ⇒ page 115
❑ Separating cover and padding ⇒ page 122
❑ After installing, make sure there are no creases
10 - Rubber tab
❑ Stitched to cover
❑ For tensioning cover; engaged in seat pan
11 - Upholstery clip
❑ For attaching cover to padding
❑ Renew after removing
❑ Re-attach at the same location using upholstery clip pliers - V.A.G 1634- when installing
12 - Seat cover
❑ Convenience seat
❑ Removing and installing cover and padding ⇒ page 118
❑ Separating cover and padding ⇒ page 122
❑ After installing, make sure there are no creases
13 - Piping
❑ Stitched to cover
❑ For engaging cover at seat pan
14 - Upholstery clip
❑ For attaching cover to padding
❑ Renew after removing
❑ Re-attach at the same location using upholstery clip pliers - V.A.G 1634- when installing
15 - Seat padding
❑ Convenience seat
❑ Removing and installing cover and padding ⇒ page 118
❑ Separating cover and padding ⇒ page 122
❑ Equipment version with seat heating: When renewing, bond on new heating element ⇒ page 130
16 - Seat bolster padding
❑ Sports seat/super sports seat/convenience seat
❑ Removing and installing ⇒ page 115
❑ Equipment version with seat heating: When renewing, bond on new heating element ⇒ page 130
17 - Padding
❑ For seat depth adjuster
❑ Sports seat/super sports seat
❑ Removing and installing ⇒ page 121
❑ Equipment version with seat heating: When renewing, bond on new heating element ⇒ page 132

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1.2 Exploded view - backrest cover and padding

1 - Padding
❑ Illustration shows sports
seat
❑ Removing and installing
cover and padding
⇒ page 123
❑ Separating cover and
padding ⇒ page 129
❑ Equipment version with
seat heating: When re‐
newing, bond on new
heating element
⇒ page 132
2 - Upholstery clip
❑ For attaching cover to
padding
❑ Renew after removing
❑ Re-attach at the same
location using uphols‐
tery clip pliers - V.A.G
1634- when installing
3 - Piping
❑ Stitched to cover
❑ For engaging cover
❑ Must be properly seated
4 - Backrest cover
❑ Illustration shows sports
seat
❑ Removing and installing
cover and padding
⇒ page 123
❑ Separating cover and
padding ⇒ page 129
❑ After installing, make
sure there are no creases
5 - Piping/rubber straps
❑ Stitched to cover
❑ For engaging cover in outer backrest frame
❑ Must be properly seated
6 - Clip
❑ Convenience seat only
❑ 2x
7 - Backrest cover
❑ Super sports seat
❑ Removing and installing cover and padding ⇒ page 125
❑ Separating cover and padding ⇒ page 129
❑ After installing, make sure there are no creases
8 - Piping
❑ Stitched to cover
❑ For engaging cover in outer backrest frame
❑ Must be properly seated

1. Covers and padding on front seats 111

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9 - Piping
❑ Stitched to cover
❑ For engaging cover
❑ Must be properly seated
10 - Padding
❑ Super sports seat
❑ Removing and installing cover and padding ⇒ page 125
❑ Separating cover and padding ⇒ page 129
❑ Equipment version with seat heating: When renewing, bond on new heating element ⇒ page 132
11 - Upholstery clip
❑ For attaching cover to padding
❑ Renew after removing
❑ Re-attach at the same location using upholstery clip pliers - V.A.G 1634- when installing

1.3 Exploded view - seat heating elements

1 - Seat extension heating ele‐

ment
❑ Sports/super sports
seat only
♦ Heated seat extension for
driver seat - Z37- / heated
seat extension for front
passenger seat - Z38-
❑ Removing and installing
⇒ page 132
2 - Padding for seat depth ad‐
juster
❑ Sports/super sports
seat only
❑ Removing and installing
⇒ page 121
❑ When renewing, bond
on new heating element
⇒ page 132
3 - Seat bolster padding
❑ Sports seat/super
sports seat/conven‐
ience seat only
❑ Removing and installing
⇒ page 113
❑ When renewing, bond
on new heating element
⇒ page 130
4 - Seat bolster heating ele‐
ment
❑ Sports seat/super
sports seat/conven‐
ience seat only
♦ Driver seat cushion lateral
support heater - Z31- / front passenger seat lateral support heater - Z33-
❑ Removing and installing ⇒ page 131

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5 - Seat heating element

♦ Heated seat cushion for driver seat - Z6- / heated seat cushion for front passenger seat - Z8-
❑ Removing and installing ⇒ page 130
6 - Backrest heating element
♦ Heated backrest for driver seat - Z7- / heated backrest for front passenger seat - Z9-
❑ Sports/super sports seat on A7 only
♦ Driver seat backrest lateral support heater - Z32- / front passenger seat backrest lateral support heater -
Z34-
❑ Removing and installing ⇒ page 132
7 - Backrest padding
❑ When renewing, bond on new heating element ⇒ page 132
8 - Seat bolster heating element
❑ Sports seat/super sports seat/convenience seat only
♦ Driver seat cushion lateral support heater - Z31- / front passenger seat lateral support heater - Z33-
❑ Removing and installing ⇒ page 131
9 - Seat bolster padding
❑ Sports seat/super sports seat/convenience seat only
❑ Removing and installing ⇒ page 113
❑ When renewing, bond on new heating element ⇒ page 130
10 - Seat padding
❑ When renewing, bond on new heating element ⇒ page 130

1.4 Removing and installing seat pan cover

and padding
⇒ “1.4.1 Removing and installing seat pan cover and padding -
standard seat”, page 113
⇒ “1.4.2 Removing and installing seat bolster padding/seat pan
cover and padding - sports seat/super sports seat”, page 115
⇒ “1.4.3 Removing and installing seat bolster padding/seat pan
cover and padding - convenience seat”, page 118
⇒ “1.4.4 Removing and installing padding for seat depth adjuster”,
page 121

1.4.1 Removing and installing seat pan cover

and padding - standard seat
• The following components have to be renewed after removal
⇒ page 108 .
Special tools and workshop equipment required

1. Covers and padding on front seats 113

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♦ Front-end hook - 3370-

Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove seat frame trim (tunnel side) ⇒ page 33 .
– Remove seat frame trim (sill side) ⇒ page 34 .
– Depending on equipment version: Remove bracket for fire ex‐
tinguisher ⇒ page 43 .
– If fitted, unscrew bolts -arrows- and detach child seat anchor
-1- from front seat.
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
– Remove backrest ⇒ page 24 .
– NAR version with seat-occupied recognition system: Observe
notes ⇒ General body repairs, interior; Rep. gr. 69 ; Seat-
occupied recognition system; Removing and installing seat-
occupied sensor .

– Disengage piping -1, 2, 3- of cover using front-end hook -

3370- (front and side sections).

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– Disengage coupling hooks -arrows-.

– Disengage piping -1- of cover using front-end hook - 3370- .
– Release and detach padding with cover from seat pan, at the
same time guiding out seat heating wiring harness (depending
on equipment version).
Installing
Installation is carried out in reverse sequence.

1.4.2 Removing and installing seat bolster

padding/seat pan cover and padding -
sports seat/super sports seat
Special tools and workshop equipment required
♦ Front-end hook - 3370-

♦ Hook - 3438-

♦ Hook - T40207-

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Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove seat frame trim (tunnel side) ⇒ page 33 .
– Remove seat frame trim (sill side) ⇒ page 34 .
– If fitted, unscrew bolts -arrows- and detach child seat anchor
-1- from front seat.
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
– Remove backrest ⇒ page 24 .
– Depending on equipment version: Remove bracket for fire ex‐
tinguisher ⇒ page 43 .
– Remove trim for seat depth adjuster ⇒ page 42 .
– NAR version with seat-occupied recognition system: Observe
notes ⇒ General body repairs, interior; Rep. gr. 69 ; Seat-
occupied recognition system; Removing and installing seat-
occupied sensor .

– If fitted, unplug electrical connector -1-.

– Release retaining hooks -arrows- and fold padding with cover
towards rear.

– Disengage contour wire from hooks -arrows A- on both sides.

– Disengage fastening strip of cover from hooks -arrows B- us‐
ing hook - T40207- .

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– Disengage piping -1, 2, 3- of cover (front and side sections)

using front-end hook - 3370- .

– Disengage coupling hooks -arrows-.

– Disengage piping -1- of cover using front-end hook - 3370- .

Removing seat bolster padding:

– Depending on equipment version: Unplug electrical connector
for bolster heater and move wire clear.
– Detach cover from seat bolster padding and move up to the
side.
– Unfasten seat bolster padding -1, 2- from seat pan and detach.

Removing cover and padding:

– Depending on equipment version: Move wiring harness for
seat heating clear at seat pan. To do so, disconnect modular
wiring ⇒ page 46 .
– Disengage side piping -arrows- at bottom at upholstery wire
-2- from seat pan by hand or using hook - 3438- .
– Repeat procedure on opposite side.
– Detach cover and padding -1- from seat pan, at the same time
guiding out seat heating wiring harness (depending on equip‐
ment version).
Installing
Installation is carried out in reverse order; note the following:
– Equipment version with seat heating: When renewing pad‐
ding, bond on new heating element ⇒ page 130 .

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1.4.3 Removing and installing seat bolster

padding/seat pan cover and padding -
convenience seat
Special tools and workshop equipment required
♦ Front-end hook - 3370-

♦ Hook - 3438-

Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove seat frame trim (front) ⇒ page 32 .
– Remove seat frame trim (tunnel side) ⇒ page 33 .
– Remove seat frame trim (sill side) ⇒ page 35 .
– If fitted, unscrew bolts -arrows- and detach child seat anchor
-1- from front seat.
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
– Remove backrest ⇒ page 24 .
– NAR version with seat-occupied recognition system: Observe
notes ⇒ General body repairs, interior; Rep. gr. 69 ; Seat-
occupied recognition system; Removing and installing seat-
occupied sensor .
– Remove bracket for seat frame trim/control unit/compressor
⇒ page 36 .

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– Disengage coupling hooks -arrows-.

– Disengage piping -1- of cover using front-end hook - 3370- .

– Disengage piping on seat pan (tunnel side) -arrow A- using

front-end hook - 3370- .
– Disengage rubber tab for cover at front of seat pan -arrow B-
(both sides) and move clear.

– Disengage piping on seat pan (sill side) -arrow A- using front-

end hook - 3370- .
– If fitted, disengage rubber tab for cover at front of seat pan
-arrow B- and move clear.

Removing seat bolster padding:

– Depending on equipment version: Unplug electrical connector
and move electrical wiring for heating element clear.
– Detach cover from seat bolster padding and move up to the
side.
– Unfasten seat bolster padding -1, 2- from seat pan and detach.

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Removing cover and padding:

– Depending on equipment version: Remove seat cushion fan
⇒ page 30 .
– Unplug and move clear electrical connectors ⇒ page 46 .
– Pull trim -1- for seat depth adjuster off towards front -arrow- on
both sides.

– Disengage side piping -arrows- at bottom at upholstery wire

-1- from seat pan by hand or using hook - 3438- .
– Repeat procedure on opposite side.

– Disengage piping -arrow- for cover at seat depth adjuster.

– Disengage rubber straps -1- at seat depth adjuster

-arrows A and B- (both sides) and secure with cable ties so
that they do not slide out of position.

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– Fold back cover -1- for seat padding and press to one side.
– Release catches -2- on retaining plate one after the other at
front of seat using hook - 3438- and disengage contour wire
-3- for cover.
– Detach cover and padding from seat pan, at the same time
guiding out seat heating wiring harness (depending on equip‐
ment version).
Installing
Installation is carried out in reverse order; note the following:
– Equipment version with seat heating: When renewing pad‐
ding, bond on new heating element ⇒ page 130 .
Tightening torques
♦ ⇒ “1.3 Exploded view - seat pan”, page 9

1.4.4 Removing and installing padding for

seat depth adjuster
Removing
– Remove trim for seat depth adjuster ⇒ page 42 .
– If fitted, unplug electrical connector -1-.
– Release retaining hooks -arrows- and fold padding with cover
towards rear.

– Disengage lugs -arrows- at seat depth adjuster -2- and fold up

padding with cover.
– To do so, pull off padding -1- for seat depth adjuster at an angle
(upwards and towards front).

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– Unclip fastening strips -2- from fasteners -5-.

– Disengage cover from lugs -4- on both sides.
– Pull padding -3- for seat depth adjuster off cover -1-.
Installing
Installation is carried out in reverse order; note the following:
– Equipment version with seat heating: When renewing pad‐
ding, bond on new heating element ⇒ page 132 .

1.5 Separating seat pan cover and padding

• The following components have to be renewed after removal
⇒ page 108 .
Special tools and workshop equipment required
♦ Upholstery clip pliers - V.A.G 1634-

Removing
– Remove seat cover and padding ⇒ page 113 .
– Detach cover -2- from padding -1- and cut through upholstery
clips -arrows- with pliers.
– Cut through remaining upholstery clips.

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Sports seat:
– Disengage cover from hooks -1, 2- for seat depth adjuster.
– Release and disengage piping -arrows-.
– Remove padding for seat depth adjuster from cover.
Installing
Installation is carried out in reverse order; note the following:
– Equipment version with seat heating: When renewing pad‐
ding, bond on new seat heating element ⇒ page 130 .

1.6 Removing and installing backrest cover

and padding
⇒ “1.6.1 Removing and installing backrest cover and padding -
standard/sports seat”, page 123
⇒ “1.6.2 Removing and installing backrest cover and padding -
super sports seat”, page 125
⇒ “1.6.3 Removing and installing backrest cover and padding -
convenience seat”, page 127

1.6.1 Removing and installing backrest cover

and padding - standard/sports seat
Special tools and workshop equipment required
♦ Removal lever - 80-200-

♦ Front-end hook - 3370-

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♦ Hook - 3438-

Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove backrest cover panel ⇒ page 25 .
– Remove head restraint ⇒ page 44 .
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
– Remove backrest ⇒ page 24 .
– Disengage piping -1, 2, 3- from outer backrest frame by hand
or using hook - 3438- .

– Starting on tunnel side, open fastener of backrest cover.

– To do so, press front side of cover -1- with U-profile inwards
-arrow A-, and pull off rear side of cover -2- with flat profile
-arrow B-.

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– Sports seat: Disengage piping -2- for inside of cover at up‐

holstery wire -1- by hand or using hook - 3438- .
– Remove side airbag (front) ⇒ General body repairs, interior;
Rep. gr. 69 ; Side airbags; Removing and installing side airbag
(front) with airbag igniter .
– Move wiring harness for backrest heating clear.
– If fitted, disengage rubber sleeve for fan from module carrier.
– Unfasten cover and padding from outer backrest frame and
pull it off upwards.
Installing
Installation is carried out in reverse sequence.

1.6.2 Removing and installing backrest cover

and padding - super sports seat
• A second mechanic is required to perform this step (as de‐
scribed on ⇒ page 127 ).
Special tools and workshop equipment required
♦ Removal lever - 80-200-

♦ Front-end hook - 3370-

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♦ Hook - 3438-

Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove backrest cover panel ⇒ page 25 .
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
– Remove backrest ⇒ page 24 .
– Disengage piping -1, 2, 3- from outer backrest frame by hand
or using hook - 3438- .

– Starting on tunnel side, open fastener of backrest cover.

– To do so, press front side of cover -1- with U-profile inwards
-arrow A-, and pull off rear side of cover -2- with flat profile
-arrow B-.

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– Disengage piping -2- for inside of cover at upholstery wire

-1- by hand or using hook - 3438- .
– Remove side airbag (front) ⇒ General body repairs, interior;
Rep. gr. 69 ; Side airbags; Removing and installing side airbag
(front) with airbag igniter .
– Move wiring harness for backrest heating clear.

– Working from rear of backrest, reach beneath padding and lo‐

cate head restraint guide (left-side).
– Press release button -4- forwards -arrow A-, and at the same
time press down and hold release ring -3- -arrow B-.
– With the help of a second mechanic, pull cover -1- and padding
with foam-fitted head restraint -2- upwards off outer backrest
frame -arrow C-.
Note:
It is not easy to pull head restraint off.
– Lift cover and padding off outer backrest frame.
Installing
Installation is carried out in reverse sequence.

1.6.3 Removing and installing backrest cover

and padding - convenience seat
Special tools and workshop equipment required
♦ Removal lever - 80-200-

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♦ Hook - 3438-

Removing
– Remove front seat ⇒ page 17 .
– Attach front seat to seat repair stand - VAS 6136-
⇒ page 23 .
– Remove backrest cover panel ⇒ page 26 .
– Remove head restraint ⇒ page 44 .
– If fitted, remove backrest fan ⇒ page 31 .
– If fitted, remove valve block for massage function and move
pneumatic lines for massage mat clear ⇒ page 96 .
– Unplug electrical connectors of wiring harnesses to backrest
and move clear disconnected wiring harnesses ⇒ page 46 .
– Remove backrest ⇒ page 24 .
– Disengage rubber tabs -2- for cover at outer backrest frame.
– Disengage piping -1- from outer backrest frame by hand or
using hook - 3438- .
– Remove side airbag (front) ⇒ General body repairs, interior;
Rep. gr. 69 ; Side airbags; Removing and installing side airbag
(front) with airbag igniter .

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– Remove clips -arrows- at outer backrest frame using removal

lever - 80-200- .
– Disengage piping -1- at bottom centre of outer backrest frame.

– Disengage piping -3- for inside of cover at upholstery wire

-2- by hand or using hook - 3438- .
– Move wiring harness for backrest heating clear.
– If fitted, pull pneumatic lines -4- for massage mat through to‐
wards front.
– If fitted, disengage rubber sleeve -1- for fan from module car‐
rier.
– Unfasten cover and padding from outer backrest frame and
pull it off upwards.
Installing
Installation is carried out in reverse sequence.

1.7 Separating backrest cover and padding

• The following components have to be renewed after removal
⇒ page 111 .
Special tools and workshop equipment required
♦ Upholstery clip pliers - V.A.G 1634-

Removing
– Remove seat cover with padding ⇒ page 123 .

1. Covers and padding on front seats 129

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– Detach cover -1- as far as possible from padding -2- and cut
through upholstery clips -3- using pliers.
– Cut through remaining upholstery clips and detach cover from
padding.
Installing
Installation is carried out in reverse sequence.

1.8 Removing and installing seat heating el‐

ement -Z6- / -Z8-
♦ Except NAR version with seat-occupied sensor (front passen‐
ger seat): Old heating elements remain on padding; new heat‐
ing elements are bonded over old elements.
♦ NAR version with seat-occupied sensor (front passenger
seat): It is not permitted to interchange components. It is im‐
portant to also renew seat padding when renewing heating
element with seat occupied recognition, front passenger side
- ZX14- .
Procedure
• Cover and padding separated ⇒ page 122
– Cut off electrical wiring directly at old heating elements.
Standard seat:
– Align new heating elements -arrow- on padding.
– Peel protective film off heating elements one after the other,
taking care not to damage heating elements.
– Bond heating elements exactly onto old heating elements
without any creases.
– Route connection wires to individual heating elements in bot‐
tom of openings.
Note:
Illustration shows leather equipment version.

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Sports seat:
– Align new heating elements -arrow- on padding.
– Peel protective film off heating elements one after the other,
taking care not to damage heating elements.
– Bond heating elements exactly onto old heating elements
without any creases.
– Route connection wires to individual heating elements in bot‐
tom of openings.

Convenience seat:
– Align new heating elements -arrow- on padding.
– Peel protective film off heating elements one after the other,
taking care not to damage heating elements.
– Bond heating elements exactly onto old heating elements
without any creases.
– Route connection wires to individual heating elements in bot‐
tom of openings.
Continued:
The remaining installation steps are carried out in the reverse se‐
quence.

1.9 Removing and installing seat bolster

heating element
Old heating element remains on padding; new heating element is
bonded over old element.
Procedure
• Seat bolster padding on seat pan removed ⇒ page 113
– Cut off electrical wire directly at old heating element.
– Align new heating element -arrow- on padding.
– Peel protective film off heating element, taking care not to
damage heating element.
– Bond heating element exactly onto old heating element with‐
out any creases.
The remaining installation steps are carried out in the reverse se‐
quence.

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1.10 Removing and installing seat depth ad‐

juster heating element
Old heating element remains on padding; new heating element is
bonded over old element.
Procedure
• Cover and padding separated ⇒ page 121
– Cut off electrical wire directly at old heating element.
– Align new heating element -arrow- on padding.
– Peel protective film off heating element, taking care not to
damage heating element.
– Bond heating element exactly onto old heating element with‐
out any creases.
The remaining installation steps are carried out in the reverse se‐
quence.

1.11 Removing and installing backrest heat‐

ing element -Z7- / -Z9-
Old heating element remains on padding; new heating element is
bonded over old element.
Procedure
• Cover and padding separated ⇒ page 129
– Cut off electrical wire directly at old heating element.
Standard seat:
– Align new heating element -arrow- on padding.
– Peel protective films off heating element one after the other,
taking care not to damage heating element.
– Bond heating element exactly onto old heating element with‐
out any creases.
– Route connection wires to individual heating elements in bot‐
tom of openings.
Note:
Illustration shows leather equipment version.

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Sports seat:
– Align new heating element -arrow- on padding.
– Peel protective films off heating element one after the other,
taking care not to damage heating element.
– Bond heating element exactly onto old heating element with‐
out any creases.
– Route connection wires to individual heating elements in bot‐
tom of openings.

Convenience seat:
– Align new heating element -arrows- on padding.
– Peel protective films off heating element one after the other,
taking care not to damage heating element.
– Bond heating element exactly onto old heating element with‐
out any creases.
– Route connection wires to individual heating elements in bot‐
tom of openings.
Continued:
The remaining installation steps are carried out in the reverse se‐
quence.

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2 Covers and padding on rear seats

⇒ “2.1 Exploded view - cover and padding”, page 134
⇒ “2.2 Exploded view - seat heating elements”, page 139
⇒ “2.3 Removing and installing cover and padding”, page 139
⇒ “2.4 Removing and installing intermediate padding - backrest
with load-through hatch”, page 145
⇒ “2.5 Detaching cover from padding”, page 147
⇒ “2.6 Removing and installing side padding”, page 148
⇒ “2.7 Removing and installing seat heating elements”,
page 149
⇒ “2.8 Removing and installing backrest heating element”,
page 150

2.1 Exploded view - cover and padding

⇒ “2.1.1 Exploded view - cover and padding, fixed backrest”, page
134
⇒ “2.1.2 Exploded view - folding backrest cover and padding”,
page 136
⇒ “2.1.3 Exploded view - cover and padding, individual rear seat
backrest”, page 137

2.1.1 Exploded view - cover and padding, fixed backrest

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1 - Backrest cover
❑ Removing and installing
cover and padding
⇒ page 141
❑ Separating cover and
padding ⇒ page 147
❑ After installing, make
sure there are no crea‐
ses
2 - Wire
❑ Foam-fitted in padding
❑ For attaching cover to
padding
3 - Contour wire
❑ Stitched to cover
❑ For attaching cover to
padding
4 - Upholstery clip
❑ For attaching cover to
padding
❑ Renew after removing
❑ Re-attach at the same
location using uphols‐
tery clip pliers - V.A.G
1634- when installing
5 - Padding
❑ Removing and installing
cover and padding
⇒ page 141
❑ Separating cover and
padding ⇒ page 147
❑ Equipment version with
seat heating: When re‐
newing, bond on new heating element ⇒ page 150
6 - Outer backrest frame

2. Covers and padding on rear seats 135

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2.1.2 Exploded view - folding backrest cover and padding

1 - Clip
❑ For attaching cover to
seat frame
❑ 12x
2 - Seat frame
❑ Moulded section
❑ Removing and installing
⇒ page 139
3 - Upholstery clip
❑ For attaching cover to
padding
❑ Renew after removing
❑ Re-attach at the same
location using uphols‐
tery clip pliers - V.A.G
1634- when installing
4 - Piping
❑ Stitched to cover
❑ For engaging cover in
outer backrest frame
❑ Must be properly seated
5 - Nut
❑ 9 Nm
6 - Side padding
❑ Removing and installing
⇒ page 148
7 - Backrest cover
❑ Folding backrest
❑ Removing and installing
cover and padding
⇒ page 142
❑ Separating cover and padding ⇒ page 147
8 - Upholstery clip
❑ For attaching cover to padding
❑ Renew after removing
❑ Re-attach at the same location using upholstery clip pliers - V.A.G 1634- when installing
9 - Intermediate padding
❑ Top
❑ Removing and installing ⇒ page 146
10 - Padding
❑ Folding backrest
❑ Removing and installing cover and padding ⇒ page 142
❑ Separating cover and padding ⇒ page 147
❑ Equipment version with seat heating: When renewing, bond on new heating element ⇒ page 150
11 - Intermediate padding
❑ Bottom
❑ Removing and installing ⇒ page 145

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12 - Clip
❑ For attaching cover to outer backrest frame
❑ 2x
13 - Seat cover
❑ Rear seat bench
❑ Removing and installing cover and padding ⇒ page 139
❑ Separating cover and padding ⇒ page 147
14 - Piping
❑ Stitched to cover
❑ For engaging cover in seat frame
❑ Make sure piping is seated correctly in seat frame
15 - Padding
❑ Rear seat bench
❑ Removing and installing cover and padding ⇒ page 139
❑ Separating cover and padding ⇒ page 147
❑ Equipment version with seat heating: When renewing, bond on new heating element ⇒ page 149

2.1.3 Exploded view - cover and padding, individual rear seat backrest

1 - Clip
❑ For attaching cover to
seat frame
❑ 4x
2 - Seat frame
❑ Moulded section
❑ Removing and installing
⇒ page 139
3 - Padding
❑ Rear seat bench
❑ Removing and installing
cover and padding
⇒ page 139
❑ Separating cover and
padding ⇒ page 147
❑ Equipment version with
seat heating: When re‐
newing, bond on new
heating element
⇒ page 149
4 - Upholstery clip
❑ For attaching cover to
padding
❑ Renew after removing
❑ Re-attach at the same
location using uphols‐
tery clip pliers - V.A.G
1634- when installing
5 - Seat cover
❑ Rear seat bench
❑ Removing and installing
cover and padding

2. Covers and padding on rear seats 137

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⇒ page 139
❑ Separating cover and padding ⇒ page 147
6 - Backrest cover
❑ Individual rear seat backrest
❑ Removing and installing cover and padding ⇒ page 142
❑ Separating cover and padding ⇒ page 147
7 - Outer backrest frame
8 - Upholstery clip
❑ For attaching cover to padding
❑ Renew after removing
❑ Re-attach at the same location using upholstery clip pliers - V.A.G 1634- when installing
9 - Contour strip
10 - Padding
❑ Individual rear seat backrest
❑ Removing and installing cover and padding ⇒ page 142
❑ Separating cover and padding ⇒ page 147
❑ Equipment version with seat heating: When renewing, bond on new heating element ⇒ page 150
11 - Piping
❑ Stitched to cover
❑ For engaging cover in outer backrest frame
❑ Must be properly seated
12 - Piping/fastening strip
❑ Stitched to cover
❑ For engaging cover in seat frame
❑ Make sure piping is seated correctly in seat frame

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2.2 Exploded view - seat heating elements

1 - Backrest heating element

❑ Rear seat backrest
♦ Heated backrest for rear
left seat - Z11- / heated
backrest for rear right seat -
Z13-
❑ Removing and installing
⇒ page 150
2 - Backrest padding
❑ When renewing, bond
on new heating element
⇒ page 150
3 - Seat heating element
❑ Rear seat bench
♦ Heated bench seat cushion
for rear left seat - Z10- /
heated bench seat cushion
for rear right seat - Z12-
❑ Removing and installing
⇒ page 149
4 - Seat padding
❑ Rear seat bench
❑ When renewing, bond
on new heating element
⇒ page 150

2.3 Removing and installing cover and pad‐

ding
⇒ “2.3.1 Removing and installing seat cover and padding - rear
seat bench”, page 139
⇒ “2.3.2 Removing and installing backrest cover and padding -
fixed backrest”, page 141
⇒ “2.3.3 Removing and installing cover and padding - folding
backrest”, page 142
⇒ “2.3.4 Removing and installing cover and padding - individual
rear seat backrest”, page 144

2.3.1 Removing and installing seat cover and

padding - rear seat bench
Special tools and workshop equipment required

2. Covers and padding on rear seats 139

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♦ Removal lever - 80-200-

Removing
– Remove rear seat bench ⇒ page 60 .
– Set down rear seat bench on a clean surface.
– Prise out fasteners -arrows A- using removal lever - 80-200- .
– Unclip wire frame at retaining clip -arrow B-.
– Repeat procedure on opposite side.

– Disengage piping -arrows A- of cover from seat frame.

– If fitted, cut through upholstery clips with pliers.
– Repeat procedure on opposite side.
– Using a flat-bladed screwdriver, lever off fastening strips
-arrows B- of cover and pull them off moulded section by hand
all around seat frame.
– Depending on equipment version, you may need to move
electrical wiring clear and unplug electrical connectors.
– Remove cover and padding -1- from seat frame.

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Country-specific version:
– If fitted, remove seat cushion fan ⇒ page 72 .
– Release retainer -arrows A- for seat cushion fan from seat
frame.
– Prise out fasteners -2- using removal lever - 80-200- .
– Repeat procedure on opposite side.
– Using a flat-bladed screwdriver, lever off piping/fastening
strips -arrows B- of cover and pull them off moulded section
by hand all around seat frame.
– Depending on equipment version: Move electrical wiring clear,
if necessary.
– If fitted, cut through upholstery clips with pliers.
– Remove cover and padding -1- from seat frame.
Installing
Installation is carried out in reverse order; note the following:
– First engage piping at rear of seat frame, and then pull cover
so it is taut.

– Fold fastening strip -1- around inwards -arrow A- by 180°.

– Engage fastening strip in groove in moulded section
-arrow B-.
• After installing cover, make sure there are no creases.

2.3.2 Removing and installing backrest cover

and padding - fixed backrest
Removing
– Remove fixed backrest ⇒ page 62 .

2. Covers and padding on rear seats 141

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– Disengage piping -1- on top of outer backrest frame.

– Unclip fastening strips -2, 3, 4- (side) from outer backrest
frame.
– Prise off fastening strips -5- at bottom of outer backrest frame.
– Remove head restraint guides ⇒ page 82 .
– Detach cover and padding from outer backrest frame.
Installing
Installation is carried out in reverse sequence.

2.3.3 Removing and installing cover and pad‐

ding - folding backrest
Special tools and workshop equipment required
♦ Wedges - T10383-

Removing
– Remove folding backrest ⇒ page 62 .
– Set down rear seat backrest on a clean surface.
– Remove head restraint ⇒ page 79 .
– Remove trim for locking mechanism ⇒ page 70 .
– Folding backrest (right-side, 2+1 seats): Remove centre belt
guide (rear) ⇒ General body repairs, interior; Rep. gr. 69 ;
Seat belts; Removing and installing belt guide (rear) .
– Folding backrest (right-side): Remove load-through hatch
⇒ page 65 .

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– Folding backrest (right-side): Unscrew locking bolt -arrow- for

load-through hatch.
– Folding backrest (left-side): Remove inner pivot pin
⇒ page 67 .

– Unclip cover from rear seat backrest at bottom side -arrows-

using wedge -T10383/1- .

– Unclip outer bearing sleeve -1- from rear seat backrest using
wedge -T10383/1- -arrow-.

– Starting at locking mechanism, prise fastening strip -2- for

cover off outer backrest frame -3- all around -arrow- using a
flat-bladed screwdriver.
– Remove head restraint guides (rear) ⇒ page 82 .
– Remove cover -1- with padding from outer backrest frame.
Installing
Installation is carried out in reverse order; note the following:

2. Covers and padding on rear seats 143

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– Fold fastening strip -1- around inwards -arrow A- by 180°.

– Engage fastening strip in groove in outer backrest frame
-arrow B-.
• After installing cover, make sure there are no creases.
Tightening torques
♦ ⇒ “2.2.1 Exploded view - rear seat backrest”, page 53

2.3.4 Removing and installing cover and pad‐

ding - individual rear seat backrest
Removing
– Remove rear seat backrest ⇒ page 63 .
– Set down rear seat backrest on a clean surface.
– Unplug electrical connectors of wiring harnesses to backrest
and move disconnected wiring harnesses clear.
Fixed individual rear seat backrest:
– Remove head restraint ⇒ page 80 .
– Disengage piping -arrows- for cover all around from outer
backrest frame.
– Detach cover and padding -1- from outer backrest frame.

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– Fold cover and padding -1- upwards until head restraint guides
-2- are visible.
– Press in retaining tabs -3- of head restraint guide -arrows A-,
and at the same time pull head restraint guide out of outer
backrest frame -arrows B-.
– Detach cover and padding from outer backrest frame.

Electrically operated individual rear seat backrest:

– Remove head restraint ⇒ page 80 .
– If fitted, remove valve block for massage function
⇒ page 106 .
– If fitted, remove backrest fan ⇒ page 72 .
– Disengage piping -arrows- from outer backrest frame.
– Disengage rubber tabs for backrest cover at outer backrest
frame.

– Disengage piping -arrows A- from outer backrest frame.

– Detach cover and padding -1- from outer backrest frame.
– To do so, move pneumatic lines -arrows B- for massage mat
clear and pull them through towards front (if fitted).
– To do so, disengage seal -2- for backrest fan at lumbar support
(if fitted).
Installing
Installation is carried out in reverse sequence.

2.4 Removing and installing intermediate

padding - backrest with load-through
hatch
⇒ “2.4.1 Removing and installing intermediate padding (bottom)”,
page 145
⇒ “2.4.2 Removing and installing intermediate padding (top)”,
page 146

2.4.1 Removing and installing intermediate

padding (bottom)
Removing
– Remove centre armrest (rear) ⇒ page 73 .

2. Covers and padding on rear seats 145

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– Fold load-through hatch towards rear.

– Release retaining hook -2- using a screwdriver -arrow A-.
– Press intermediate padding -1- towards left side -arrow B-,
disengage it from rear seat backrest and detach it.
Installing
Installation is carried out in reverse order; note the following:
• Fit intermediate padding in trim for backrest with load-through
hatch and engage it.

2.4.2 Removing and installing intermediate

padding (top)
Special tools and workshop equipment required
♦ Removal lever - 80-200-

♦ Removal wedge - 3409-

Removing
– 2+1 seats: Remove head restraint guides from backrest (cen‐
tre) ⇒ page 83 .

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– Press trim -1- off using removal lever - 80-200- -arrow-.

– Unclip intermediate padding from top of load-through hatch

upwards -arrows- using removal wedge - 3409- .

– Insert removal lever - 80-200- between padding and trim at

location shown.
– Unclip intermediate padding -1- from front of load-through
hatch upwards -arrows- using removal lever - 80-200- .
Installing
Installation is carried out in reverse order; note the following:
• Press on intermediate padding until it engages audibly.

2.5 Detaching cover from padding

• The following components have to be renewed after removal
⇒ page 134 .
Special tools and workshop equipment required
♦ Upholstery clip pliers - V.A.G 1634-

2. Covers and padding on rear seats 147

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Removing
– Remove seat cover and padding ⇒ page 139 .
Detaching cover from padding - rear seat bench:
– Detach cover -2- as far as possible from padding -1- and cut
through upholstery clips -arrow- using pliers.
– Cut through remaining upholstery clips and detach cover from
padding.

Detaching cover from padding - rear seat backrest

– Detach cover -2- as far as possible from padding -1- and cut
through upholstery clips -arrow- using pliers.
– Cut through remaining upholstery clips and detach cover from
padding.
Installing
Installation is carried out in reverse order; note the following:
– Equipment version with seat heating: When renewing pad‐
ding, bond on new heating element ⇒ page 149 ,
⇒ page 150 .

2.6 Removing and installing side padding

⇒ “2.6.1 Removing and installing side padding - without side air‐
bag”, page 148
⇒ “2.6.2 Removing and installing side padding - with side airbag”,
page 149

2.6.1 Removing and installing side padding -

without side airbag
Special tools and workshop equipment required
♦ Removal wedge - 3409-

Removing
– Fold backrest forwards.

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– Using removal wedge - 3409- , press trim -1- for belt guide out
of fasteners -2, 3- and detach it.
– Remove rear seat bench ⇒ page 60 .

– Unscrew nut -arrow A-.

– Hold belt to one side and pull side padding -1- off studs.
– Fold rear seat backrest down towards front slightly.
– Pull side padding downwards -arrow B-, swivel forwards slight‐
ly and disengage from mounting.
– Disengage side padding from sill panel trim and detach.
Installing
Installation is carried out in reverse sequence.
Tightening torques
♦ ⇒ “2.1 Exploded view - cover and padding”, page 134

2.6.2 Removing and installing side padding -

with side airbag
Note:
The side padding with side airbag has “Airbag” written on the
cover.
The procedure is described in: Removing side airbag (rear) ⇒
General body repairs, interior; Rep. gr. 69 ; Side airbags; Re‐
moving and installing side airbag (rear) with airbag igniter .

2.7 Removing and installing seat heating el‐

ements
Old heating elements remain on padding; new heating elements
are bonded over old elements.
Procedure
• Cover and padding separated ⇒ page 147
– Cut off electrical wire directly at old heating element.

2. Covers and padding on rear seats 149

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– Align new heating element -arrow- on padding.

– Peel protective film off heating element, taking care not to
damage heating element.
– Bond heating element exactly onto old heating element with‐
out any creases.
Note:
Illustration shows leather equipment version on standard seat or
sports seat.
The remaining installation steps are carried out in the reverse se‐
quence.

2.8 Removing and installing backrest heat‐

ing element
Old heating elements remain on padding; new heating elements
are bonded over old elements.
Procedure
• Cover and padding separated ⇒ page 147
– Align new heating element -arrows- on padding.
– Peel protective films off heating element one after the other,
taking care not to damage heating element.
– Bond heating element exactly onto old heating element with‐
out any creases.
– Route connection wires to individual heating elements in bot‐
tom of openings.
Note:
Illustration shows leather equipment version on standard seat or
sports seat.
The remaining installation steps are carried out in the reverse se‐
quence.

150 Rep. gr.74 - Seat - padding, covers