DTB Date: February 9, 2009
Order No.: S-B-18.00/40a
Supersedes: S-B-18.00/40 dated October 28, 2008
Group: 18
Revision History
Revision Date Purpose
a 2/909 Revised Work Instructions and Parts Information Updated
- 10/28/08 Initial issue
SUBJECT: Model 163, 164, 170, 171, 203, 204, 209, 211, 215, 216, 219, 220, 221, 230, 251 and 463
AMG Vehicles
Equipped with Engine 112.96x, 113.98x, 113.99x, 156.98x or 275.98x
Oil Consumption
If you receive customer reports in the above model AMG vehicles of excessive oil consumption due to
repeated oil level messages in the instrument cluster, review the information below and follow instructions
accordingly.
Factors which may influence oil consumption:
1. Usage related influences that increase oil consumption:
• The load spectrum is significantly higher than on comparable standard production engines
• Driving profile (aggressive driving style)
• Normal engine wear after break in is completed
2. Design related influences that increase oil consumption:
Engine 156
• High RPM design
• Large piston diameter
• Low friction design
Engines 112.96x, 113.98x/99x, 275.98x:
• Increased stroke (113.98x/99x) compared to the standard engine
• Low friction design
• Number of cylinders (275.98x)
• Turbocharging (275.98x)
This bulletin has been created and maintained in accordance with MBUSA-SLP S423QH001, Document and Data Control, and
MBUSA-SLP S424HH001, Control of Quality Records.
© 2009 Mercedes-Benz USA, LLC. All rights reserved. Reproduction or translation in whole
Mercedes-Benz Canada, Inc. or in part is not permitted without authorization from the
Dealer Workshop Services publisher. Printed in U.S.A.
www.MBUSA.com 1-800-FOR-MERCedes
www.startekinfo.com
Before repair actions are taken, please note the following:
1. Oil consumption may be higher if the vehicle is new or frequently driven at high engine speeds.
2. An oil consumption measuring test should only be performed after the engine break-in period of at
least 6200 miles (~10000 km).
3. The maximum allowable oil consumption specification is 1.35 quart/1000 mi. (0.8 liter/1000km).
4. Accurate measurement of oil consumption can only be accomplished after driving longer distances,
minimum 300 miles (~500 km).
5. An oil consumption measurement must always be performed to substantiate all customer oil
consumption complaints.
6. To ensure the most accurate measurement possible, perform the consumption test using the
weighing method.
Note: Prior to performing an oil measurement test inspect the engine for any evidence of oil leaks or
any malfunctions with the crankcase ventilation system that would contribute to increased oil consumption.
An oil consumption test must be completed prior to any major engine repairs for oil consumption
complaints.
Oil Consumption Measurement:
1. Only use approved engine oil, refer to the WIS documents:
Specified Engine Oils BB00.40-P-0223-02A
Sheet 229.5 BB00.40-P-0229-05A
Sheet 229.51 BB00.40-P-0229-51A
2. Perform weighing of engine oil at start and finish under the same ambient conditions. Refer to
instructions Measure Oil Consumption, WIS group 18.00. For documentation use Oil Consumption
Test Input Sheet (see step 9).
3. Engine must be at operating temperature (approx. 80oC engine oil temperature).
4. The oil must be weighed in the same location at the start and the finish of the drive.
5. Allow the engine oil to drain 15 minutes both before and after the measurement drive.
6. Use the same receptacle before and after the measurement drive.
7. Do not drain the oil out of the oil filter and oil cooler, this oil quantity is not required.
8. Do not forget the second oil pan (if applicable) when draining the engine oil.
9. Fill out Oil Consumption Test Form. Form can be found on Star TekInfo Æ Warranty Information Æ
Oil Consumption Test Form. Print a copy and submit with warranty claim for any oil consumption
related repairs.
Note: Use TAB key or Arrow keys to navigate test sheet
Minimum driving distance for oil consumption measurement drive:
• Drive performed by customer Æ Distance greater than 600 miles, (~1000km) preferred, because
the driving style of the customer is taken into account.
• Drive performed by workshop Æ Distance greater than 300 miles, (~500 km) to obtain most
accurate measurement possible. Measurement drive performed by the workshop should include
the following driving (if possible):
50% highway driving
25% secondary road driving
25% stop and go traffic
Repair: If the engine oil consumption is greater than 1.35 qt/1000 mi. (0.8 lit./1000km) as measured by the
weighing method, proceed as follows:
2 S-B-18.00/40a (February 9, 2009)
All Engines 112.96x, 113.98x, 156.xxx and 275.98x:
1. Inspect cylinders with a MB approved bore scope to search for possible locations of oil leaks into
the combustion chamber (head gasket, valve guides).
2. Use the bore scope to determine the condition of the cylinder walls. Refer to WIS document
AR01.00-P-0200AU and AH01.00-P-0300-01A.
Note: If clear determination cannot be made of the condition of the cylinder walls using the bore
scope engine disassembly and closer visual inspection is required as outlined in WIS.
3. If no visible signs of oil leakage is determined and the cylinder walls are not damaged replace
pistons and rings. Refer to test and repair information in WIS Group 03.10:
4. For engine 275.98x also replace both turbochargers.
5. If the cylinder walls are damaged on engines 112.96x, 113.98x, and 275.98x the complete engine.
must be replaced. Submit Engine Pre-authorization Form to WSG.
6. If the cylinder walls are damaged on engines 156.xxx repair with fitted block A156 010 63 00
Additional Information for Engine 156.xxx
Piston Replacement: Refer to WIS document AR03.10-P-7021AMG. Follow instructions in AR03.20-P-
4351-05AMG for the tightening procedure for crankcase bottom section.
Note: With new bolts installed, the tightening sequence needs to be performed two times. Follow
tightening sequence stages 1 to 4 on all 20 bolts and then loosen all bolts in reverse sequence. Repeat
tightening sequence stages 1 to 4 on all 20 bolts a second time.
Fitted Block Replacement: Refer to WIS document AR01.40-P-8400AMG. Follow instructions in
AR03.20-P-4351-05AMG for the tightening procedure for crankcase bottom section.
Note: With a fitted block, the tightening sequence only needs to be performed once as per WIS
document AR03.20-P-4351-05AMG.
Additional Parts Information for Engine 156.xxx
1. When replacing pistons, the parts listed below must be replaced (fitted block not included).
2. When replacing a fitted block parts marked with an asterisk (*) are included in the block assembly
and do not need to be ordered separately.
S-B-18.00/40a (February 9, 2009) 3
Parts Information
Qty. Part Name Part Number
10 Screw intake manifold A004 990 53 12
2 Gasket intake manifold A156 141 03 80
8 Gasket plug connector A156 016 21 21
1 Gasket valve cover left A156 016 25 21
1 Gasket valve cover right A156 016 24 21
20 Screw cylinder head to crankcase A156 016 06 69
1 Gasket cylinder head left A156 016 01 20
1 Gasket cylinder head right A156 016 00 20
4 Screw cylinder head to crankcase N000000 005754
16 Connecting rod bolt A156 038 04 71
4 Bolt camshaft adjuster N910105 012018
8 Piston* A156 030 09 17
2 Screw bearing cap to crankcase* A156 011 03 71
8 Screw cover to crankcase* A156 011 02 71
2 Screw cover to crankcase* A156 011 05 71
8 Screw bearing cap to crankcase* A156 011 04 71
1 Fitted block* A156 010 83 05
1 Fitted block A156 010 84 05
Note: The following allowable labor operations should be used when submitting a warranty claim for this
repair. This information has been generated on October 28, 2008. Please refer to Netstar Æ Star TekInfo Æ
Star Time for the most current labor time allowance.
In Case of Warranty
Operation: Oil Consumption Test Drive, Perform (18-1010)
Oil Consumption Test, Prepare And Evaluate (18-1020)
Engine With Autom. Transm, R&R (01-2800)
Engine (Transmission Removed), R&R (01-2202)
Engine – Without Automatic Trans Attached, R&R (01-2600)
Engine – Exchange, (Automatic Trans. Removed) (01-4015)
Engine – (Automatic Trans Removed) Exchange (01-4016)
Replace fitted block with pistons (01-0000)
Analysis Form, Fill Out (02-3472)
Autom, Transmission, R&R (Engine With Trans Removed) (27-2110)
Spark Plugs, R&R/Repl. If Req (15-1010)
Engine Cylinder Bores – All, Inspect With Borescope (Spark Plugs Removed) (01-1321)
Cylinder Head, Left & Right Bank – (Engine Removed), R&R (01-5795)
Autom. Transmission (722.6 – Electronic), R&R (27-2028)
Engine Pistons – On All Cylinders, R&R/Repl. (Engine & Cyl Heads Removed) (03-7061)
Engine Piston Rings – On All Pistons, Repl. (Pistons Removed) (03-7311)
Turbocharger – Left (Engine Removed), R&R (09-6421)
Turbocharger – Right (Engine Removed), R&R (09-6621)
Turbocharger – (Removed), Exchange (09-6043)
Continued on Page 5
4 S-B-18.00/40a (February 9, 2009)
Continued from Page 4
In Case of Warranty
Damage Code Operation Number Time (hrs.) Model Indicator (s)
00001 70 18 1010 0.0 hrs. * AC, AE, BC, CD, DC, DD, G4, J3,
K4, L2, L3, M5, M9, N3, N5, N6,
P3, Q5, R2, R4, R7, R8, SC, S3,
S6, S9, T3, TB, U5, U8, X2, Y2,
Y4, Z3
18 1020 0.8 hrs. AC, AE, BC, CD, DC, DD, G4, J3,
K4, L2, L3, M5, M9, N3, N5, N6,
P3, Q5, R2, R4, R7, R8, SC, S3,
S6, S9, TB, T3, U5, U8, X2, Y2,
Y4, Z3
Engine M156: 01 2800 7.0 hrs. Y4
7.1 hrs. TB, U8
7.4 hrs. CD
8.2 hrs. SC, S9
8.6 hrs. R8
8.7 hrs. AE, DC
9.4 hrs. Z3
10.6 hrs. BC
27 2110 1.1 hrs. CD
1.5 hrs. BC, TB Y4, SC, S9
1.7 hrs. AE, DC
01 0000 0.0 hrs. * AE, BC, CD, DC, R8, S9, SC, TB,
U8, Y4, Z3
Engines M112, M113 & 15 1010 2.0 hrs. S3, S6, X2
M275:
2.1 hrs. N3, Y2
2.2 hrs. G4, P3, T3, U5
2.3 hrs. K3, M5
2.4 hrs. Q5
2.5 hrs. L2, L3, M9, N5, R2, R7
3.2 hrs. AC, DD
3.8 hrs. J3, N6, R4
01 1321 0.3 hrs. L2, L3
0.6 hrs. G4, K3, M5, M9, N3, N5, P3, Q5,
S3, S6, T3, U5, X2, Y2
0.7 hrs. R2, R7
0.8 hrs. AC, DD
1.0 hrs. J3, N6, R4
Continued on Page 6
S-B-18.00/40a (February 9, 2009) 5
Continued from Page 5
In Case of Warranty
Damage Code Operation Number Time (hrs.) Model Indicator (s)
If Necessary To Diagnose: 01 2800 6.5 hrs. X2
6.7 hrs. T3, U5
6.9 hrs. Y2
7.1 hrs. G4
7.3 hrs. N3
7.4 hrs. M5
7.9 hrs. S3, S6
9.0 hrs. Q5
9.8 hrs. AC, DD, P3
9.9 hrs. L2, M9
10.1 hrs. N5
10.5 hrs. R2, R7
11.3 hrs. R4
11.5 hrs. L3
01 2202 8.7 hrs. J3, N6
01 2600 10.4 hrs. K3
27 2028 6.3 hrs. J3
6.4 hrs. N6
01 5795 6.7 hrs. G4
6.8 hrs. K3, L2, L3, M5, N3, P3, S3, S6, X2
7.8 hrs. T3, U5
7.9 hrs. Y2
8.0 hrs. Q5
9.3 hrs. M9, N5, R2, R7
9.8 hrs. AC, DD
11.6 hrs. J3, N6, R4
Continued on Page 7
6 S-B-18.00/40a (February 9, 2009)
Continued from Page 6
In Case of Warranty
Damage Code Operation Number Time (hrs.) Model Indicator (s)
If Cyl Walls Not Damaged: 01 2800 6.5 hrs. X2
Not claimable again if 6.7 hrs. T3, U5
claimed to diagnose
6.9 hrs. Y2
7.1 hrs. G4
7.3 hrs. N3
7.4 hrs. M5
7.9 hrs. S3, S6
9.0 hrs. Q5
9.8 hrs. AC, DD, P3
9.9 hrs. L2, M9
10.1 hrs. N5
10.5 hrs. R2, R7
11.3 hrs. R4
11.5 hrs. L3
Not claimable again if 01 2202 8.7 hrs. J3, N6
claimed to diagnose
Not claimable again if 01 2600 10.4 hrs. K3
claimed to diagnose
Not claimable again if 27 2028 6.3 hrs. J3
claimed to diagnose
6.4 hrs. N6
Not claimable again if 01 5795 6.7 hrs. G4
claimed to diagnose
6.8 hrs. K3, L2, L3, M5, N3, P3, S3, S6, X2
7.8 hrs. T3, U5
7.9 hrs. Y2
8.0 hrs. Q5
9.3 hrs. M9, N5, R2, R7
9.8 hrs. AC, DD
11.6 hrs. J3, N6, R4
Continued on Page 8
S-B-18.00/40a (February 9, 2009) 7
Continued from Page 7
In Case of Warranty
Damage Code Operation Number Time (hrs.) Model Indicator (s)
03 7061 0.0 hrs. * M9, N3, N5, Q5, U5, X2, Y2
4.0 hrs. AC, DD
4.7 hrs. J3, N6
4.8 hrs. R4
5.2 hrs. G4, P3
5.6 hrs. K3, L2, L3, M5, S3, S6
5.7 hrs. R2, R7
5.9 hrs. T3
03 7311 0.0 hrs. * Q5
0.8 hrs. S3, S6, T3, X2
0.9 hrs. U5, Y2
1.0 hrs. M5, M9, N3, N5, R2, R7
1.2 hrs. AC, DD
1.4 hrs. J3, N6, R4
1.5 hrs. G4, P3
2.0 hrs. K3, L2, L3
Engine M275 Only: 09 6421 2.5 hrs. AC, DD
2.9 hrs. J3, N6, R4
09 6621 2.6 hrs. AC, DD
3.1 hrs. J3, N6, R4
09 6043 (right side) 0.4 hrs. AC, AD
0.5 hrs. J3, N6, R4
09 6043 (left side) 0.4 hrs. AC, AD
0.5 hrs. J3, N6, R4
Continued on Page 9
8 S-B-18.00/40a (February 9, 2009)
Continued from Page 8
In Case of Warranty
Damage Code Operation Number Time (hrs.) Model Indicator (s)
If Cyl Walls Are Damaged: 01 2800 6.5 hrs. X2
Not claimable again if 6.7 hrs. T3, U5
claimed to diagnose
6.9 hrs. Y2
7.1 hrs. G4
7.3 hrs. N3
7.4 hrs. M5
7.9 hrs. S3, S6
9.0 hrs. Q5
9.8 hrs. AC, DD, P3
9.9 hrs. L2, M9
10.1 hrs. N5
10.5 hrs. R2, R7
11.3 hrs. R4
11.5 hrs. L3
Not claimable again if 01 2202 8.7 hrs. J3, N6
claimed to diagnose
Not claimable again if 01 2600 10.4 hrs K3
claimed to diagnose
Not claimable again if 27 2028 6.3 hrs. J3
claimed to diagnose
6.4 hrs. N6
01 4015 0.0 hrs. * G4, R2, R4, R7, U5
2.1 hrs. P3, Q5, S3, S6
2.3 hrs. X2
2.8 hrs. AC, DD, J3, L2, L3, M5, M9, N3,
N5, N6, Y2
3.0 hrs. T3
27 2110 1.5 hrs. S3, S6, T3, U5, X2, Y2
1.7 hrs. AC, DD, M5, M9, P3, Q5, R2, R4,
R7
1.8 hrs. G4, L2, L3, N3, N5
01 4016 1.0 hrs. K3
02 3472 0.2 hrs. AC, DD, G4, J3, K3, L2, L3, M5,
M9, N3, N5, N6, P3, Q5, R2, R4,
R7, S3, S6, T3, U5, X2, Y2
*Separate time punch required. Ensure that punches are labeled as NON time.
**Maximum time allowed with a separate time punch. Ensure that punches are labeled as NON time.
S-B-18.00/40a (February 9, 2009) 9
