CLK 350 Cabriolet (209.456) V6-3.5L (272.960) (2006)
Oil Level Warning Indicator Control Module: All Technical Service Bulletins
Engine - Low Oil Level Symptom Diagnostics
October 24, 2008
S-B-18.00/37c dated October 6, 2008
SUBJECT: All Passenger and Light Truck Models
Equipped with M156, M272, M273 or M642
Engines Low Oil Level Symptoms
NOTE: This document supersedes the following previously published DTBs.
T-B-01.45/20 dated September 19, 2007
P-B-18.00/31c dated February 1, 2007
T-B-18.00/32a dated August 21, 2006
T-B-18.00/33b dated March 27, 2007
P-B-18.00/35a dated July 26, 2007
P-B-18.40/34 dated May 8, 2007
If you receive customer reports in the above model vehicles of the oil level warning message frequently appearing in the instrument cluster, "Oil level
too low" or "Check Engine Oil Level at Next Service Stop", but the oil level is correct on the dipstick, there could be several causes depending on the
vehicle. This document is a consolidation of those possible causes.
1. Model 203.087/092 and 211.087/287, Equipped with M272 - Erroneous IC Warning Display "Check Engine Oil Level at Next Service Stop": Oil
level warning message frequently appears in the instrument cluster, however the oil level correct on the dipstick, the cause may be the incorrect oil
data record stored in the ASSYST control unit (Model 211), or instrument cluster (Model 203). To resolve, perform the following procedures.
"Pour in one liter of oil at next refueling stop" (Model 211 4MATIC with M272 up to 6/2005) "Check oil level at next refueling stop" (Model 211
4MATIC as of 6/2005 and Model 203 4MATIC with M272 as of production startup)
1a. Adaptation of Modified Oil Data Record with SDS 10/06 or Later
Model 203 4MATIC with M272 Engine, up to VIN F886321: Control Units -> Information and communication -> ICM - Vehicle code 12 /
NO -> CU adaptations -> select code 807 -> select national version select M272 all-wheel drive change status 3 "or higher" confirm selection.
Model 211 4MATIC with M272 Engine, up to VIN X218820
Check whether CGW programming is possible by using SDS: Control units -> Body -> CGW -> Control Unit adaptations -> Control Unit
programming. If yes, perform control unit programming and then perform parameterization in ASSYST. If no, perform parameterization in
Perform parameterization in ASSYST by using SDS: Start Control -> Units -> Information and communication -> ASSYST -> CU
adaptations -> select engine M272 -> Select national version -> Select engine for ASSYST M272 Model 211 all-wheel drive "National
version" status 5 or higher.
1b. Check Oil Dipstick Marking on Handle (Model 203 / 211 up to Engine No. 2729..30467144)
NOTE: As of February 2, 2007, Section 1b of this DTB must not be performed on the following vehicles which are covered under Service
Campaign No. 2007010010
Model 203.087 - Serial Nos. AF725595 to F864624
Model 203.092 - Serial Nos. F725472 to F885088
Model 211.087 - Serial Nos. X177825 to X219293