2012 Mercedes-Benz ML-Class Fuel System Problems

ENGINE STALLED DRIVING ON INTERSTATE HIGHWAY AT 70mph. MECHANIC DIAGNOSTIC INDICATED TO BE FAULTY FUEL PUMP and/or FUEL PUMP CONTROL UNIT. THIS ISSUE HAS BEEN RECOGNIZED BY MERCEDES BENZ AS A FAULTY ISSUE AND SUBJECT TO RECALL. UPON CALLING MERCEDES BENZ DEALER WAS TOLD THERE WAS NO RECALL ON THIS MATTER FOR MY VEHICLE CONTRADICTING THIS ISSUE PREVIOUSLY RECOGNIZED BY MERCEDES BENZ.

Vehicle stalled without warning, and I was advised by a mechanic that the fuel pump control unit was reporting a fault through the onboard diagnostics port and the check engine light on the dashboard. It was necessary to replace the fuel pump control unit as the defect was intermittent and subject to occur at any time the vehicle was being driven. There is no available solution save the replacement. I had the fuel pump control unit replaced at my cost and after replacing it found information concerning the NHTSA recall campaign online. The defective fuel pump control unit was discarded upon replacement and is not available for inspection. I believe the failure of this fuel pump control unit is a direct result of the recall not being complied with. I believe the manufacturer; Mercedes Benz USA is responsible for my costs expended in repairing this defect under the recall campaign because they did not notify me of the recall. I purchased this vehicle from an authorized Mercedes Benz USA dealer, my personal contact information is a matter of record of the sale, and I believe Mercedes Benz USA had a duty to contact me concerning the NHTSA recall campaign #2023010002 concerning this vehicle.

The contact owns a 2012 Mercedes-Benz ML350. The contact stated that while her husband was driving at an undisclosed speed, the vehicle made an abnormally loud sound and then stalled. Additionally, the vehicle failed to accelerate properly while driving. The contact's husband coasted the vehicle to the side of the road. The vehicle was restarted and driven to the residence. The vehicle was taken to an independent mechanic, who diagnosed that the fuel pump needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 79,372.

The contact’s husband owns a 2012 Mercedes-Benz ML350. The contact received notification of NHTSA Campaign Number: 22V955000 (Fuel System, Diesel, Fuel System, Gasoline) however, the part to do the recall repair was not yet available. The dealer was contacted, and the vehicle was taken to the dealer where the vehicle remained. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

While driving, vehicle stalled. Mechanic found water in spare wheel Well. And fuel module and fuel pump shorted out. Had vehicle repaired; 07/22. The vehicle stalled again in 12/22. Mechanic found water in spare wheel well. Had to replace fuel pump. In February,2023, Mercedes Benz notified me of a recall, NHTSA Recall I D: 22V955 ; water intrusion in the spare wheel well. And, stated their local dealer would repair vehicle or reimburse me for the cost of repair, if I had the repair done already. I submitted receipts and documents pertaining to the repair. The Mercedes Benz Dealership refused to acknowledge the causal relationship between the repairs and the recall issue. And, refused me reimbursement.

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.

TOOK OUR 2012 MERCEDES-BENZ ML350 BLUETEC TO THE DEALERSHIP NUMEROUS TIMES DUE TO AN OVERPOWERING FUEL SMELL AND BURNED PLASTIC IN THE CABIN OF THE VEHICLE. WE HAD TO STOP SEVERAL TIMES BECAUSE WE FELT SICK AS IF WE WERE GOING TO PASS OUT AND/OR THROW UP. BUT, THEN IT STARTED TO AFFECT OUR CHILDREN AND WE DEMANDED THAT THE DEALERSHIP FIND THE ROOT CAUSE. THEY FINALLY DETERMINED THAT IT WAS A FUEL LEAK AROUND THE FUEL INJECTORS THAT COMPLETELY CHARRED COMPONENTS IN THE FUEL INJECTION CAVITY. IT COULD HAVE CREATED A FIRE OR LOSS OF CONTROL OF THE VEHICLE. I NOTICED THAT THIS HAS BEEN REPORTED TO THE NHTSA WHICH IS WHY I AM ALSO REPORTING THIS NOW ALSO. MY VEHICLE IS ONLY SERVICED BY THE MERCEDES-BENZ DEALERSHIP. THE DEALERSHIP IS CHARGING ME $1900 FOR THE REPAIR OF THE CHARRED COMPONENTS. NHTSA ID NUMBER: 11090864 REPORTED EXACTLY THE SAME ISSUE. I THOUGHT I WAS GOING CRAZY UNTIL THEY FOUND THE ROOT CAUSE OF THE SMELL. NOW THAT THERE ARE AT TWO REPORTED CASES OF THIS BOTH IN 2012 MERCEDES-BENZ ML350 VEHICLES IT SHOULD BE INVESTIGATED.

MY ML350 IS OVER OVER 71000, NO WARRANTY. I NOTICED THAT IT HAS BEEN STALLED SEVERAL TIMES TILL INCIDENT. LAST TUESDAY, SUDDENLY CAR ENGINE STOPPED IN THE USPS PARKING LOTS, MIDDLE OF DRIVEWAY, NO MOVING. IT WAS AROUND 6PM, I CALLED ROAD SERVICE AND FIRST GUY CAME WHO DIDN'T KNOW ABOUT MB, AND 2ND GUY SAID IT MIGHT BE OUT OF GAS. I FILLED UP FULL ONE DAY BEFORE, SO TANK WAS NOT EMPTY. 2ND GUY DIDN'T KNOW EXACT REASON, AND NEEDED TO TOW. MY CAR HAS BEEN TOWED TO DEALER LATE NIGHT. NEXT DAY, I CALLED DEALER BUT THEY DIDN'T KNOW WHAT IS A PROBLEM OR NOT CHECKING YET. 2 DAYS LATER. I STOPPED BY DEALER(BECAUSE THEY NEVER CALLED ME BACK), AND SALES PERSON SAID NEEDED TO ORDER A PART AND COST $700, SO SHOULD BE READY ON FRIDAY. (CAR TOWED ON TUESDAY). SALES PERSON NEVER CALLED ME BACK ON FRIDAY AGAIN, SO I STOPPED BY DEALER.SALES PERSON SAID, MY CAR NEEDED TO CHANGE FUEL PUMP AND COST WILL BE $1530. OFF COURSE, I COMPLAINED!! MY CAR IS READY TODAY, 8DAYS AFTER TOWED. I RENT A CAR FOR A WEEK AND PAID $300 BY MYSELF. DEALER GAVE ME A LITTLE DISCOUNT BUT PAID $1200. TOTAL MY COST IS $1500. THEY CHANGED CONTROL UNIT, FUEL DELIVERY MODULE, AND FUEL FILTER UNIT. ALSO ONE IS RECALL #2013110002 FUEL SYS ECU HAS BEEN REPLACED.(SOFTWARE) I THINK THIS IS SAFETY ISSUE. I WAS LUCKY WITHOUT ANY ACCIDENT. *TR

TL* THE CONTACT OWNS A 2012 MERCEDES BENZ ML350. THE CONTACT STATED THAT THERE WAS A STRONG FUEL ODOR COMING FROM THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT REMAINED FOR APPROXIMATELY 21 DAYS FOR A DIAGNOSTIC TESTING. THE TECHNICIAN DIAGNOSED THAT THE FUEL LINE, THE FUEL PUMP AND THREE PIN CONNECTOR NEEDED TO BE REPLACED. IN ADDITION, THE NOISE INSULATION PANEL UNDERNEATH ENGINE NEEDED TO BE REMOVED AND REINSTALLED. THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS THEN TOWED TO THE DEALER WHERE THE FUEL PUMP RELAY, THE SCREW CONNECTIONS AND THE SUCTION JET PUMP, THE FUEL GAUZE TRANSMITTER, THE CATALYTIC CONVERTER, THE TEMPERATURE SENSOR WERE ALL REPLACED HOWEVER THE FAILURE PERSISTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 59,383.

I STOPPED AT A RED LIGHT. THE 2012 ML350 ENGINE STALLED. I COULD HAVE BEEN IN A ACCIDENT. LUCKILY, THE CAR BEHIND ME DID NOT HIT ME. I HAD TO START THE ENGINE AGAIN. *TR