Table of Contents

F01 Climate Control

Subject Page

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

IHKA (4 zone) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
System Air Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
IHKA Blower Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Fresh Air Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Recirculated Air Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Air Ionizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

IHKA Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Coolant Circuit of the Heating System . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Main AC Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
A/C Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
AUC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
IHKA Front Control Unit Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Front Center Air Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Left/right Side Air Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Left/right B-pillar Air Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
FKA Rear Control Unit Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Rear Center Air Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
IHKA Stepper Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Initial Print Date: 01/09 Revision Date:

Climate Control
Model: F01/F02

Production: From Start of Production

After completion of this module you will be able to:

• Describe the operation IHKA/FKA (4 zone) system used on the F01/F02

• Identify the components of the BMW IHKA/FKA system used on the F01/F02

2
F01 Climate Control
Introduction
The F01/F02 heating and air conditioning system has been enhanced in terms of heat-
ing/cooling capacity, airflow distribution, noise and convenience when compared with the
previous 7 Series system.
The F01/F02 will only be available with IHKA 4 zone (IHKA with FKA). The new 4 zone
IHKA system is similar (in operation) to the system used on E70 and E71 vehicles.
The (IHKA) Integrated automatic climate control with rear climate control (FKA)
is a 4-zone system.
Regardless on the equipment option selected, all essential climate control functions
are individually accessible by each occupant.

IHKA integrated automatic climate control on F01/F02

3
F01 Climate Control
IHKA (4 zone)
System Overview
The IHKA 4 zone has an additional control panel and control unit in the rear passenger
compartment (FKA) allowing the rear passengers full control of temperature, air flow rate
and airflow distribution with a choice of 5 intensity levels.
The IHKA 4 zone system is equipped with15 stepper motors.
There is an extra blower fan located in the center console to enhance the air flow in the
rear passenger compartment.
The rear footwell ducts are each fitted with a PTC heater element to warm up the outlet
air temperature. They are individually adjusted depending on the rear passengers
requested temperature settings.
The rear occupants can also adjust the air temperature from the rear center air vent and
the left and right B-pillar vents by means of two stratification adjusters (potentiometers)
located on the rear center air vent.

Control panel for IHKA with FKA rear climate control with IHKA 4 zone.

4
F01 Climate Control
Index Explanation Index Explanation
Control panel for FKA rear climate
1 control and center rear air vent
3 FKA fan in center console

IHKA climate-control housing Left/right rear footwell PTC

2 with15 stepper motors
4 heater elements

5
F01 Climate Control
System Air Flow
The air flows through a flap between the fan motor and the climate control housing into
the filter housing of the IHKA.
In the filter housing, the air is filtered by two combination filters (with activated charcoal)
whether it is fresh air or recirculated air, it then flows on to the evaporator and heater core.
Depending on the IHKA settings and the in side and outside temperature, the air is initial-
ly cooled and dried by the evaporator and, if necessary, then re-heated by the heater core
to deliver the requested outlet temperature.

F01/F02 Climate Control Unit

Index Explanation Index Explanation

1 F01/F02 climate control housing 4 Pipe connections for heater core

Right condensation drain from filter

2 Air inlet via flap 5 housing and climate control unit

Connection for refrigerant Left condensation from

3 circuit/expansion valve
6 climate control housing

6
F01 Climate Control
IHKA Blower Fan
The fan draws in the recirculated air from the passenger compartment through an open-
ing in the bulkhead.

Climate Control Air Intake Assembly on F01/F02

Index Explanation Index Explanation

1 Fresh air intake 4 Fresh-air/ram-air stepper motor

2 Recirculated-air intake 5 Recirculated-air stepper motor

Air outlet via gaiter to

3 climate control housing

7
F01 Climate Control
Fresh Air Intake

Top View of the Fresh Air Intake Path in the IHKA Housing on F01/F02

Index Explanation Index Explanation

Fresh air intake via coarse Two combination filters

1 filter to climate control fan
5 (activated charcoal)

2 Recirculated-air intake 6 Evaporator

3 Coarse filter in fan-motor housing 7 Heater core

Air outlet to air ducts and

4 Climate control system fan 8 passenger compartment

8
F01 Climate Control
Recirculated Air Intake

Top View of the Re-circulated Air Intake Path in the IHKA Housing on F01/F02

Index Explanation Index Explanation

Re-circulated air intake from passenger

Two combination filters
1 compartment through opening in 5 (activated charcoal)
engine compartment bulkhead

2 Fresh air intake 6 Evaporator

3 Coarse filter in fan-motor housing 7 Heater matrix

Air outlet to air ducts and

4 Climate control system fan 8 passenger compartment

9
F01 Climate Control
Air Ionizer
The air Ionizer used in the F01/F02 is the latest technical innovation in the area of heating
and air conditioning.
The air ionizer is positioned upstream of the evaporator and it is activated as necessary
when the vehicle is stationary.
By partial ionization of the air the formation of bacteria on the evaporator surface and the
associated odor is prevented.

Air ionizer on F01/F02

Index Explanation Index Explanation

1 F01/F02 climate-control unit 3 Air ionizer

2 Filter housing

10
F01 Climate Control
The air ionizer is a separate component which fits onto the climate-control unit with bayo-
net connection and is positioned in the air stream to the evaporator.
It essentially consists of a planar module, a flat ceramic plate which is covered by hard
glass with printed electrical conductors located on the front and back of the component.

Air ionizer on F01/F02

Applying a high voltage generated internally in the ionizer partially ionizes the air.
The chemical reaction between the ionized air and the condensed water produces hydro-
gen peroxide in the evaporator housing, which kills bacteria and germs on the evaporator
and thus prevents the formation of unpleasant odors that could enter the vehicle interior.
The IHKA decides when and whether to operate the air ionizer, based on the ambient
and operating conditions of the climate control system.
The air ionizer is operated for a period of several minutes by a control signal from the
IHKA.
Operation takes place as required only during the overrun period after Terminal 15 is
turned OFF and the vehicle is locked.
The maximum power consumption of the unit is 850 mA.
The power supply for operating the air ionizer is through a three-pin connector on the
climate control wiring harness.
Communication with the IHKA control panel takes place by means of a control signal via
a bidirectional cable connection.

11
F01 Climate Control
IHKA Components
To optimize the system package, promote comfort and reduce noise level in the passen-
ger compartment, the blower fan for the climate control system has now been placed in
the engine compartment.

Main Components of the F01/F02 Climate Control System

Index Explanation Index Explanation

Coolant pipes and double solenoid

1 F01/F02 climate control system 3 valves for the heater core

A/C compressor with intake Fan for climate control system with
2 and pressure lines
4 fresh-air intake in engine compartment

12
F01 Climate Control
Coolant Circuit of the Heating System
The F01/F02 IHKA system is a coolant regulated system. The coolant circuit uses a dou-
ble solenoid heater control valve to control the temperature of the heater core.

Note: The N63 engine uses a mechanical water pump.

Index Explanation

1 Flow pipes to heater matrix

2 Return pipe

Double solenoid valves for

3 controlling the heater
core temperature

Refrigerant Circuit
The refrigerant used on the F01/F02 is R134a.

Index Explanation
Example of information plate in
1 engine compartment of F01
Details of refrigerant and
2 quantity used

13
F01 Climate Control
Main AC Components
The A/C compressor location and refrigerant lines routing in engine compartment.

F01/F02 A/C compressor and refrigerant lines

Index Explanation Index Explanation

Refrigerant circuit pressure line

1 A/C compressor 3 with pressure sensor

2 Refrigerant circuit intake line

14
F01 Climate Control
A/C Compressor
The system uses a variable displacement AC compressor with a magnetic clutch.
Refrigerant pressure and flow are varied as the displacement of the compressor
changes in response to the electronic control valve.

F01/F02 A/C Compressor

Index Explanation Index Explanation

1 A/C compressor 3 Electronic control valve

2 A/C compressor magnetic clutch

15
F01 Climate Control
AUC Sensor
The AUC sensor is located next to the fresh air intake. The fresh air is drawn in through
the cowl between windshield and hood and passes through a coarse filter in the climate
control fan housing before entering the system.

Climate control system fan on F01/F02

Index Explanation Index Explanation

1 Climate control system fan 3 AUC sensor

2 Coarse filter and fresh-air intake

16
F01 Climate Control
IHKA Front Control Unit Panel
The control panel and control unit of the climate control system on the F01/F02 is incor-
porated in the audio systems control panel.

The driver and front passenger can select separate automatic programs.
In order to be able to cater for the different heating/air conditioning preferences the auto-
matic mode on the F01/F02 climate control offers a choice of 5 different levels of intensi-
ty for the automatic program.
Automatic mode is activated by pressing the AUTO button.
The intensity level is selected by repeatedly pressing the “Fan speed” rocker button
when Automatic mode is active.
The “ALL” button can be used to synchronize the temperature, AUTO mode intensity or
air flow rate and airflow distribution settings for all 4 zones with the settings for the driver.
The Residual feature is similar to the E70 in that it is operated by pressing the HIGH side
of the driver’s fan speed button.

17
F01 Climate Control
Some of the possible control scenarios on the control panels of the climate control sys-
tems are illustrated below.

Control scenarios on control panels of F01/F02 climate control systems

Index Explanation Index Explanation

IHKA control panel, Automatic

IHKA control panel, Automatic
1 mode for driver and front passenger
3 mode for driver, climate control
off for front passenger
IHKA control panel, Automatic
2 mode for driver, manual mode
for front passenger

18
F01 Climate Control
Front Center Air Vent

The front center air vent has a variable airflow focus feature that allows the airflow to be
individually varied between spot-focussed and diffused mode settings.

Front center air vent with variable airflow focus on F01/F02

Index Explanation Index Explanation

1 Front center fresh-air vent A Spot-focussed airflow setting

Front center airflow

2 stratification controls
B Diffused airflow setting

3 Spot/diffuser airflow adjusters

19
F01 Climate Control
Front center air vent with variable airflow focus on F01/F02

Index Explanation Index Explanation

Left/right airflow stratification

1 potentiometer and illumination
3 Left/right limit switch

2 Left/right adjuster illumination

20
F01 Climate Control
Left/right Side Air Vent

Index Explanation

1 Adjuster and illumination

2 Limit switch

Left/right side air vent on F01/F02

Left/right B-pillar Air Vent

Index Explanation

1 Adjuster and illumination

Left/right B-pillar air vent on F01/F02

21
F01 Climate Control
FKA Rear Control Unit Panel
The 4-zone system has four control points for individually adjusting the climate control
settings.
The rear passengers can adjust the temperature separately for the left and right sides.
The automatic program with its 5 intensity settings can also be selected in the rear seats.
As for the front seats, the intensity level in automatic mode for the rear passengers is
selected and set by pressing the fan rocker button.

Index Explanation Index Explanation

Control panel for FKA climate Control panel for FKA climate
1 control set to automatic mode
2 control set to manual mode

22
F01 Climate Control
Rear Center Air Vent

Index Explanation Index Explanation

Rear center air vent left/right

1 airflow stratification potentiometer
3 Temperature sensor

2 Adjuster with illumination

23
F01 Climate Control
IHKA Stepper Motors
The IHKA 4 zone has a total of 15 stepper motors for automatic airflow distribution.

IHKA Stepper Motor Locations

24
F01 Climate Control
IHKA Stepper Motors Location Legend

Index Explanation

1 Stepper motor for defroster

2 Stepper motor for left outer air vent

3 Stepper motor for left center air vent

4 Stepper motor for right center air vent

5 Stepper motor for right outer air vent

6 Stepper motor for left front footwell

7 Stepper motor for right front footwell

8 Stepper motor for left rear footwell

9 Stepper motor for right rear footwell

10 Stepper motor for left front stratified airflow

11 Stepper motor for right front stratified airflow

12 Stepper motor for left rear stratified airflow

13 Stepper motor for right rear stratified airflow

14 Stepper motor for recirculated air (on fan motor housing)

15 Stepper motor for fresh/ram air (on fan motor housing)

25
F01 Climate Control
IHKA (4 Zone) Circuit Diagram

26
F01 Climate Control
Index Explanation

1 Double solenoid valves for coolant supply to heater matrix, left/right

2 Electric auxiliary water pump (ZWP)

3 IHKA 4 zone: rain/light/solar/condensation sensor (RLBSS)

4 Not for US

5 Roof Function Center (FZD)

6 Servo motor for fresh air/ram air on air fan in engine compartment

7 Servo motor for recirculated air on air fan in engine compartment

8 Fresh air/recirculated air fan motor

9 Output stage for fresh air/recirculated air fan motor

10 AUC sensor for automatic recirculated air control

11 High-pressure sensor for air conditioner refrigerant circuit

12 Air-conditioning compressor with magnetic clutch and control valve

13 Outside temperature sensor

14 Junction Box electronics (JB)

15 Central Gateway Module (ZGM)

16 Footwell module (FRM), Terminal 58g

17 Central Information Display (CID)

18 IHKA 4 zone: left side vent limit switch and illumination

IHKA front center air vent, left/right airflow stratification

19 potentiometer, left/right limit switch and illumination

20 IHKA 4 zone: right side vent limit switch and illumination

21 Left B-pillar vent illumination

Heating and air conditioning system/audio control panel IHKA

22 control panel and control unit with interior temperature sensor

27
F01 Climate Control
 Index Explanation

23 Front power distribution box

24 Right B-pillar vent illumination

25 Air ionizer on climate-control unit

26 Not for US

Stepper motors for automatic airflow distribution on climate-

27 control unit IHKA 4 zone: fifteen stepper motors

28 Air temperature sensor, front center left

29 Air temperature sensor, front center right

30 Left heater matrix temperature sensor

31 Right heater matrix temperature sensor

32 Evaporator temperature sensor

33 Controller

34 Not for US

35 Rear right power distribution box with HHS relay

36 IHKA FKA control panel and control unit with interior temperature sensor

37 IHKA 4 zone: output stage for FKA center-console fan

38 IHKA 4 zone: FKA center-console fan

IHKA rear center air vent, left/right airflow stratification

39 potentiometer, left/right temperature sensor and adjuster illumination

40 IHKA w/ FKA: PTC heater element in rear left footwell vent duct

41 IHKA w/ FKA: PTC heater element in rear right footwell vent duct

42 IHKA w/ FKA: temperature sensor in rear left footwell vent duct

43 IHKA w/FKA: temperature sensor in rear right footwell vent duct

28
F01 Climate Control
The F01/F02 introduces the interactive vehicle owner’s manual.
It provides extensive information on system operation, function,
configuration and performance.
The information can be accessed via the main menu.
• Main menu > (1)
• Vehicle info > (2)
• Owner’s Manual > (3)
• Keyword search > (4)
• Climate Control > (5)

Interactive Owner’s Manual on F01/F02

29
F01 Climate Control
Extensive information is provided on the subject of air conditioning/climate control.
• Keyword search > (1)
• Climate control (2)
• Automatic climate control > (3)
• Climate control functions in detail > (4)

Interactive Owner’s Manual on F01/F02 climate control functions

30
F01 Climate Control
Interactive Owner’s Manual on F01/F02 climate control functions

Index Explanation Index Explanation

1 Climate control functions in detail 3 ALL program

2 AUTO program

31
F01 Climate Control
Interactive Owner’s Manual on F01/F02 climate control functions

Index Explanation Index Explanation

1 Climate control functions in detail 3 Adjusting temperature

2 Temperature

32
F01 Climate Control
 • Main menu > (1)
• Settings > (2)
• Air conditioning > (3)
• Rear air conditioning > (4)

Accessing air conditioning settings from main menu

33
F01 Climate Control
Service Information
The following charts show the different systems/user functions and
components used in the climate control systems of the F01/F02.

System Functions IHKA/ FKA

IHKA Control Unit X

FKA Control Unit X

HKA Control Unit

Control and adjustment points 4

Temperature zones 4

Air flow rate zones 4

Airflow distribution zones 4

AUTO programs with 5 intensity levels 3

Front Airflow stratification 2

Rear Airflow stratification 2

Air ionizer for evaporator disinfection X

34
F01 Climate Control
 User functions IHKA/ FKA

Variable airflow focus X

Fresh air/recirculated air function, AUC X

Cold start interlock X

Start anti-misting X

Anti-misting X

Defrost X

Max heating X

Max cooling X

Max A/C X

Solar compensation X

Residual heat X

ALL function, 4 zones X

OFF function X

Rear OFF function X

A/C compressor function manual cut-out X

35
F01 Climate Control
 Sensor system IHKA/ FKA

Front interior temperature sensor (IHKA) X

Rear interior temperature sensor (FKA) X

Evaporator temperature sensor 1

Refrigerant pressure sensor junction box electronics, JB X

Heater matrix temperature sensor 2

Air outlet temperature sensor 6

AUC sensor, JB X

Solar sensor X

Condensation sensor X

36
F01 Climate Control