2003 Mercedes-Benz M Class Engine cooling Problems
- Complaints
- 2about this part
- Share
- 20%of 10 total for the year
- Median mileage
- 10,744miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2003 Mercedes-Benz M Class, 20% of the 10 complaints for this model year. Where a mileage was given, the median is 10,744 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I was pulling into a parking space (with my 3 small children strapped in the back), when I realized that the car was not stopping. I pressed the brake harder, the car accelerated, jumped the cement median, and hit a parked car. Thank god no one was injured. I am sick thinking what could of happened. The car is 6 months old and has been back to the dealership twice for a problem I believe was the beginning of this, I.e., when I would step on the brake it would go to stall, buck forward and then be ok. The dealership was unable to find it or duplicate it. …”
NHTSA complaint #10039003, filed 2003-09, 10,744 miles“After changing the serpentine belt, I have noticed that the crankshaft pulley was wobbling and the belt vibrating, I been doing some research and found that there has been a recalled for this issue, dose mine still applied to this problem? It is already out of warranty but this kind of repair is expensive, please.”
NHTSA complaint #10430515, filed 2011-10Related service bulletins
- 10012829Feb 7, 2005Engine will not start and fault message start error appears in instrument cluster.
Engine cooling: other model years
Other parts of the 2003 Mercedes-Benz M Class
4 complaintsSeats
2 complaintsExterior lighting
1 complaintsFuel system
1 complaintsSteering
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2003 Mercedes-Benz M Class
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology