In this section we will be collecting various topics of a technical nature which can hopefully help in the understanding of different issues you may come across, either with your own car or if you are shopping for a used vehicle.
TOPIC: Mercedes-Benz M272 3.5L V6 / M273 5.0L V8 Balancer Shaft / Idler Gear Issue
Some excerpts from the Mercedes-Benz Tehnical Bulletin published April 23, 2009:
“Fault Code Scenario 1: DTC 1200 and/or 1208 is/are present in ME-SFI control module. The fault codes
are recorded as current and/or stored in the fault memory. When the fault memory is erased and the engine
is restarted, the fault codes reoccur immediately. This is due to the positioning of the timing chain driven
camshafts relative to the crankshaft and can be caused by a worn sprocket on the balance shaft on engine
M272 or by a worn guide (idler) gear for the timing chain on engine M273.”
“Fault Code Scenario 2: One or more of the fault codes 0059, 0060, 0063, 0064, 0271, 0272, 0275, and
0276 is/are present in ME-SFI control module. The fault codes are recorded as current and/or stored in the
fault memory. If current and/or stored, these codes are caused by a malfunctioning camshaft adjustment
Applicable Models: Equipped with M272 Engine Up to Serial No. 2729..30 759427 or M273 Engine Up to
Serial No. 2739..30 193592. Engines produced after serial nos. listed above are already equipped with
improved camshaft adjustment solenoids (A272 051 01 77).
The full bulletin is available at:
Balance Shaft TSB
OTHER USEFUL LINKS
“Mercedes Medic” info on how to check if your vehicle is potentially affected:
Check my Mercedes-Benz for Balance Shaft Issue by Vin
Note: You should check with your local MB dealer or MBUSA to see if there is any assistance available.
IMG HAS INVESTED IN TRAINING ON THIS PARTICULAR REPAIR AND HAS SUCCESSFULLY PERFORMED IT ON SEVERAL VEHICLES.