2004 Mercedes-Benz C Class Engine cooling Problems
- Complaints
- 3about this part
- Share
- 20%of 15 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the engine cooling of the 2004 Mercedes-Benz C Class, 20% of the 15 complaints for this model year.
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.
“2004 mercedes benz c- class wagon. Consumer writes in regards to defect that allows coolant to leak into the transmission, requiring replacement of the transmission, torque converter and radiator the consumer stated he was forced to spend over six thousand dollars to have the transmission replaced, to correct a defect mercedes benz was aware of.”
NHTSA complaint #10437010, filed 2011-11“Wile driving, the consumer noticed steam coming from the hood and black smoke coming from the back of the vehicle. The vehicle stalled. The driver tried to restart the vehicle ,but was unable to do so. The consumer had the vehicle towed to the dealer for inspection. The mechanic was unable to duplicate the problem. Please fill in additional information.”
NHTSA complaint #10087821, filed 2004-08“While driving consumer noticed steam coming from underneath the vehicle. Consumer was able to pull over to shoulder, lifted up the hood, and smoke came from the engine. Consumer had the vehicle towed to the dealer for inspection.”
NHTSA complaint #10089776, filed 2004-08Related service bulletins
- 10016626Aug 1, 2005Coolant hose at the bottom right of the radiator must be checked to determine whether the two catches of the coolant hose are latched correctly. Inspect latching of lower…
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2006 | 1 | 11% |
| 2004 | 3 | 20% |
| 2003 | 2 | 22% |
| 2002 | 5 | 16% |
| 2001 | 3 | 21% |
| 2000 | 2 | 25% |
| 1999 | 1 | 14% |
| 1996 | 2 | 33% |
| 1995 | 3 | 6% |
| 1994 | 2 | 13% |
Other parts of the 2004 Mercedes-Benz C Class
3 complaintsAir bags
2 complaintsElectrical system
2 complaintsSeats
2 complaintsTires
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSteering
1 complaints
← All problems reported for the 2004 Mercedes-Benz C Class
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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