2004 Mercedes-Benz ML350 Engine cooling Problems
- Complaints
- 3about this part
- Share
- 9%of 35 total for the year
- Median mileage
- 37,348miles
- 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 ML350, 9% of the 35 complaints for this model year. Where a mileage was given, the median is 37,348 miles.
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.
“While driving a mercedes ML350 on the road, the engine turned off. I coasted to a stop on the shoulder of the road. When I tried to restart, the starter cranked but the engine would not start. When I tried again an hour later, the engine started normally. This happened again, later in the day. If I had been on a freeway, it would have been quite dangerous. I took the car to a mercedes mechanic who immediately knew what was wrong and he replaced the crankshaft position sensor. He said that this frequently happens with the ML350.”
NHTSA complaint #10241718, filed 2008-09, 50,000 miles“Thank you for your responses but we are very disappointed and very frustrated with your response. During these 2 year things have gone wrong. We did contact Mercedes-Benz headquarters..market too many times and explain about us car. But they are ignore now we are in the process of launching a lawsuit to replace my 04 ml 350 on the basis of safety. The engine failed 18 times on the road (in addition to all kinds of other problems). …”
NHTSA complaint #10165343, filed 2006-08“The contact stated while driving 35 MPH during a downhill braking situation, there was a hesitation between braking and accelerating. The hesitation lasted between 2 and 3 seconds, and there was no RPM increase during that period. The vehicle was not taken in for service at the time.”
NHTSA complaint #10166340, filed 2006-08, 24,695 milesRelated service bulletins
- 10166978Feb 6, 2014Engine diagnosis warning lamp lights up - Fault code entry (FC) 14A600 or 14A700
- 10044199Mar 28, 2012Xentry: mercedes benz: vehicle stumbles and bucks for a few minutes after a cold start when outside temperature is low (no dtcs). Engine runs rough in a warm up phase. No model…
- 10033070Dec 16, 2009Xentry (mercedes): engine warning lamp is currently on or was on and a delay fault of the camshaft adjust to current or stored in the engine control unit. Models 171, 203, 209…
- 10022893Apr 24, 2008Check engine light on / fault codes fc1200 / fc1208 stored in me-sfi control unit. Mercedes-benz model c230, c280, c350, slk280, slk350, clk350, clk550, e350, e550, cls550, s600…
Engine cooling: other model years
Other parts of the 2004 Mercedes-Benz ML350
6 complaintsAir bags
5 complaintsBrakes
4 complaintsElectrical system
4 complaintsFuel system
4 complaintsSeats
4 complaintsEngine
2 complaintsExterior lighting
2 complaintsOther or unknown
2 complaintsBody and structure
2 complaintsEquipment
1 complaintsTires
1 complaints
← All problems reported for the 2004 Mercedes-Benz ML350
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