2012 Mercedes-Benz ML350 Engine cooling Problems
- Complaints
- 2about this part
- Share
- 3%of 65 total for the year
- Median mileage
- 77,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2012 Mercedes-Benz ML350, 3% of the 65 complaints for this model year. Where a mileage was given, the median is 77,000 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.
“The contact owns a 2012 Mercedes-Benz ML350. The contact stated while driving 40 mph, the check engine warning light was illuminated. The contact pulled over to the side of the road and attempted to restart the vehicle to see if the light would disappear however, the vehicle would not restart. The contact called the local dealer who arrived at the scene and connected the vehicle to a diagnostic machine to clear the sensor code for the vehicle to restart however, the failure persisted. The contact took the vehicle to the local dealer to be diagnosed. …”
NHTSA complaint #11427522, filed 2021-08, 145,000 milesRelated service bulletins
- 10248173Dec 11, 2023Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (âÂÂMYâÂÂ) 2009-2012 GL-Class, ML-Class, R-Class, and…
- 10184799Nov 11, 2020Mercedes-Benz USA, LLC (?MBUSA?) has entered into an agreement with the United States Department of Justice (DOJ), the Environmental Protection Agency (EPA), the California Air…
- 10167513Mar 4, 2014The engine diagnosis warning lamp - check engine lamp (CEL) is active. One or more of the faults relating to the throttle valve actuator (M16/6) listed under 'Control unit /…
- 10167041Feb 11, 2014Oil spray or fouling on the ACTIVE CURVE SYSTEM is not related to leakage of the hydraulic pump.
- 10166980Feb 10, 2014Traces of oil in area of oil cooler (inner V) on engine 642
- 10166978Feb 6, 2014Engine diagnosis warning lamp lights up - Fault code entry (FC) 14A600 or 14A700
- 10053732Sep 1, 2013Mercedes: the engine control module software fails to correspond with current configuration production and will be updated by an authorized dealer. Models 2012 166 (ml350, 550…
- 10167539Jul 16, 2013Engine rattling noise after engine start for several seconds
- 10167554Jul 10, 2013Engine diagnosis warning lamp activated. Fault code P045600 "Very fine leak" or P044200 "Fine leak" stored in engine control unit.
- 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…
Engine cooling: other model years
Other parts of the 2012 Mercedes-Benz ML350
21 complaintsFuel system
16 complaintsElectrical system
11 complaintsExterior lighting
9 complaintsSteering
7 complaintsTransmission and drivetrain
6 complaintsLane departure
4 complaintsBrakes
3 complaintsSeat belts
3 complaintsBody and structure
3 complaintsAir bags
2 complaintsOther or unknown
2 complaints
← All problems reported for the 2012 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