2012 Mercedes-Benz ML350 engine problems

Filed Jan 23, 2025 · Electrical, Engine · TN

My name is [XXX] My vehicle cut off on me 3 times twice while stationary and once at an intersection. Found oil in engine control module due to failed cam position sensors. Oil has traveled through the engine harness to ECM causing oil to get into module and cause it to shut down but it did start back up. This is very dangerous and could cause serious injury to someone. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Dec 2, 2024 · Engine · 65,000 miles · NY

The contact owns a 2012 Mercedes-Benz ML350. The contact stated while driving uphill at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. In addition, the contact stated that the vehicle was shaking abnormally. The contact stated that the abnormal shaking occurred at various speeds. The vehicle was taken to the dealer where it was diagnosed with timing chain failure. The contact was informed that the timing chain needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the federal safety agency Hotline to report the failure. The failure mileage was approximately 65,000.

Filed Feb 12, 2024 · Engine · PR

When I start the engine, it makes a sound loud and strange

Filed Sep 27, 2023 · Engine · PR

Cuando enciendo mi guagua hace un ruido muy fuerte y se siente como si se va a apagar. El motor se puede romper en cualquier momento. Si se ha llevado a diferentes talleres para confirmar el ruido y me refieren que son mas de 80 guaguas que han visitado su taller con el mismo problema. No presenta ninguna advertencia cuando aparecio por primera vez. En el taller me dicen que se debe cambiar el motor por que son los motor stroker y eso puede causar un feo accidente. When I turn on my bus it makes a very loud noise and it feels like it's going to turn off. The engine can break at any time. If it has been taken to different workshops to confirm the noise and they tell me that there are more than 80 buses that have visited their workshop with the same problem. It does not present any warning when it first appeared. In the workshop they tell me that the engine must be changed because they are the stroker engines and that can cause an ugly accident.

Filed Feb 17, 2023 · Electrical, Engine · MA

Oil leaked thru wiring harness in to ECU and 02 sensors massive damage on car harness

Filed Aug 25, 2022 · Engine · 96,000 miles · NY

The contact owns a 2012 Mercedes-Benz ML350. The contact stated that after starting the vehicle, the check engine warning light illuminated. The contact stated that the vehicle was towed to a dealer who diagnosed a failure with the camshaft. The contact researched online and found a Technical Service Bulletin regarding the camshaft failure. The dealer advised the contact that the warranty had expired for the camshaft repair. The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 96,000.

Filed Mar 1, 2022 · Engine, Fuel system · 110,000 miles · PA

The contact owns a 2012 Mercedes-Benz ML350. The contact stated while the vehicle was being inspected, the independent mechanic informed him of a diesel and oil leak. The contact stated no warning light was illuminated. The contact towed the vehicle to the local dealer. The vehicle was not diagnosed or repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 110,000.

Filed Aug 2, 2021 · Engine · 145,000 miles · CT

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. The contact was informed that the failure was due to the crankshaft position sensor. The vehicle was not repaired due the cost. The manufacturer was made aware of the failure. The failure mileage was approximately 145,000.

Filed May 3, 2021 · Electrical, Engine · 92,000 miles · IL

Hello, ref: ml350 camshaft solenoid leak! I am seeking out for your help wrt to a situation with 2012 ml350. Enclosed herewith is an inspection report from a recent service visit requiring close of $8k in repairs for your reference. Engine harness (oil lled harness and various components have oil in them, all components with oil should be replaced, quick insp found a few components but there may be more that need to be replaced) after reviewing the inspection report, I did some research and came across campaign no. 2012070002, september 2012 (copy enclosed for your reference), wherein mercedes had identified it as a part of recall and service campaign and agrees to cover the cost and labor damages to any downstream components due to the camshaft solenoid leak. This service campaign has been initiated because daimler ag (dag), the manufacturer of mercedes- benz vehicles, has determined that due to the settling properties of the seal, oil may leak from the camshaft adjustment solenoid. Dealers will retrofit four adapter harnesses onto the engine wiring harness as a precautionary measure at the next workshop visit. Please note that recall and service campaigns do not expire and may also be performed on a vehicle with a vehicle status indicator. Approximately 557,108 vehicles are affected please review and let me know if you have any questions. Mercedes is not owning the responsibility for repair. Appreciate your help in this regard.

Filed May 22, 2018 · Engine · NC

2012 mercedes benz ml350. Consumer writes in regards to oil leak. *ld the consumer stated the manufacturer was notified, but stated the vehicle was out of warranty. The consumer was offered a 15% discount on the repair.