2012 MERCEDES-BENZ ML350 Complaints

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.

The following has been happening over the last 2 - 3 yrs. Also confirmed with other customers on MB world blog site. After traveling in the car for 5-15 minutes, and sooner if connected to cell phone via bluetooth, the indicators stop working. This leads to deactivation of the blind spot assist as well. The problem is temporarily resolved after switching the vehicle off and then on again, only to recur after driving it again for 10-15minutes, and earlier if attached to iPhone via Bluetooth. The blind spot assist is then permanently inactivated. 2 Mercedes dealerships in 2 separate states where I took the vehicle could not even identify a problem, let alone resolve it. When I called MBUSA, they claimed ignorance to the issue and told me to repair or change the vehicle myself. Since this is an issue with multiple vehicles, a recall needs to be issued for this model. It’s unknown how many collisions can be attributed to this since the problem has not been acknowledged by Mercedes’. The problem has occurred almost everyday over the last 3 years. I have narrowly missed being involved in collisions because of the inactivation of blind spot assist and changing lanes. I have almost been rear ended a bunch of times because of the indicators getting inactivated. All this has happened with my family traveling me with. Please lets not wait for loss of life before a recall is initiated. thank you.

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.

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.

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.

THE TURN SIGNALS STOP WORKING AFTER DRIVING THE CAR FOR A FEW MINUTES. TO GET THEM TO WORK AGAIN REQUIRES STOPPING THE CAR, SHUTTING OFF THE ENGINE AND RESTARTING IT WHICH IN TURN RESETS THE COMPUTER. THIS EFFORT DOES NOT PERMANENTLY FIX THE ISSUE AND THEY USUALLY QUIT WORKING AGAIN WITHIN TWO TO TEN MILES. THIS IS THE FIFTH COMPLAINT TO THE NHTSA WITH THIS ISSUE AND THIS PARTICULAR MODEL. THIS IS A SAFETY HAZARD WHICH NEEDS TO BE ADDRESSED BY THE MANUFACTURER AND FIXED FREE OF CHARGE. THIS HAS BEEN AN ONGOING ISSUE FOR THE PAST TWO TO THREE YEARS WITH THIS CAR. TODAY WE WERE ALMOST REAR ENDED WHEN MAKING A LEFT HAND TURN OFF OF A TWO LANE ROAD WITHOUT A DESIGNATED TURN LANE.

THE CONROL TO ACTIVATE THE WINDSHIELD WASHER IS A STALK MOUNTED BUTTON ON THE LEFT SIDE OF THE STEERING WHEEL. PRESSING THIS BUTTON WILL CORRECTLY CAUSE THE WINDSHIELD WASHER TO COME ON BRIEFLY, SPRAY THE WINDSHIELD WITH WATER AND FOLLOW UP WITH A FEW STROKES OF THE WIPER TO CLEAR THE WINDSHIELD. THE PROBLEM WITH THIS ARRANGEMENT IS THAT THE SIMILARITY OF THE BUTTON ON THE END OF THE STALK ON THE RIGHT SIDE, WHICH PLACES THE TRANSMISSION IN PARK. THUS IF YOU ARE TRAVELING ON THE INTERSTATE, FOR EXAMPLE, YOU COULD EASILY CONFUSE GOING INTO PARK WITH WASHING THE WINDSHIELD. MY EXPERIENCE IF YOU MAKE THIS MISTAKE IS THAT THE CAR WILL NOT GO INTO PARK WHILE THE CAR IS IN MOTION, BUT WILL GO INTO INTO NEUTRAL UNTIL THE CAR FULLY STOPS. THIS COULD BE A DANGEROUS MANEUVER, ESPECIALLY IN THE RAIN ON A BUSY INTERSTATE. THIS BUTTON AND ITS PLACEMENT SHOULD BE IMPROVED TO CORRECT THIS CONFUSION.

THE TURN SIGNALS RANDOMLY STOP WORKING. VEHICLE MUST BE TURNED OFF AND RESTARTED TO GET SIGNALS TO WORK AGAIN WHICH ONLY LASTS FOR AN UNKNOWN NUMBER OF TIMES. MAJOR SAFETY ISSUE. WAS ALMOST REAR ENDED WITH GRANDCHILD IN CAR WHEN TURN SIGNAL THAT WORKED MOMENTS EARLIER FAILED AND CAR BEHIND ME CONSEQUENTLY ALMOST HIT ME. MERCEDES USA WAS CONTACTED AND WAS UNWILLING TO REMEDY THE PROBLEM. THEY DIAGNOSED THE ISSUE AS A DEFECTIVE STEERING COLUMN MODULE THAT NEEDE TO BE REPLACED. THE ESTIMATE WAS ALMOST $1300. THE CAR HAS ONLY 39,000 MILES ON IT AND BASED ON RESEARCH OTHERS HAVE HAD THIS ISSUE. MERCEDES BASICALLY INDICATED THAT I WAS NOT A LOYAL ENOUGH CUSTOMER TO WARRANT COMPENSATION. I AM FORCED TO VIOLATE TRAFFIC LAWS AT TIMES BECAUSE I TRY TO NOT USE SIGNALS WHEN ABSOLUTELY NEEDED AS I DON'T KNOW WHEN THEY WON'T WORK. IN ADDITION I CANNOT LET ANYONE ELSE USE THE VEHICLE FOR OBVIOUS REASONS, SAFETY, LIABILITY, ETC. MERCEDES SHOULD HAVE DONE A RECALL AND I THINK THEY SHOULD BE LIABLE IF ANYTHING HAPPENS TO ANYONE DUE TO THIS PROBLEM.

THIS CAR'S TRANSMISSION WENT OUT AT 70,000 MILES (2015), WHICH IS WAY TOO EARLY. DRIVING WHEN THE TRANSMISSION BEGAN TO ACT UP WAS VERY DANGEROUS AND POTENTIALLY AS IT LOST POWER COULD HAVE CAUSED COLLISION. I REPLACED TRANSMISSION FOR $14,000 AND THEN THE TRANSMISSION WENT OUT FOR A SECOND TIME (2019). CAUSING THE SAME SAFETY CONCERNS AS IT LOST POWER. THIS TIME I WAS NOT STUPID ENOUGH TO FIX IT AND WILL NOT BE BUYING A MERCEDES EVER AGAIN.

LEFT AND RIGHT TURN SIGNALS CEASE TO WORK RANDOMLY WHILE DRIVING THE VEHICLE. TURNING THE VEHICLE OFF AND ON MAKES THE SIGNALS WORK AGAIN, BUT THEY CEASE TO WORK AFTER AWHILE. THE DEALER TOLD ME A FALSE CODE CAUSES THIS TO HAPPEN. THE DEALER CLEARED THE CODE, BUT THE ISSUE PERSISTS. THIS IS VERY DANGEROUS SITUATION DURING DRIVING. THIS HAPPENED MULTIPLE TIMES IN THE PAST FEW MONTHS.