2012 Mercedes-Benz ML350: engine stalls while driving

Filed Apr 14, 2026 · Fuel system · NM

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.

Filed Jan 6, 2025 · Fuel system · SC

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 federal safety agency 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 federal safety agency recall campaign #2023010002 concerning this vehicle.

Filed Apr 30, 2024 · Fuel system · 79,372 miles · VA

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.

Filed Jan 24, 2024 · Body · 141,000 miles · IN

The contact owns a 2012 Mercedes-Benz ML350. The contact stated that while driving at an undisclosed speed, the vehicle stalled and lost forward propulsion. The contact turned off and restarted the vehicle. The contact drove the vehicle for a short distance and the failure reoccurred. The vehicle lost motive power and failed to restart. The vehicle was towed to an independent mechanic where the contact was informed of water entering the spare tire wheel well in the trunk of the vehicle. The contact was advised that the spare tire wheel well, was filled with water. The contact was advised to take the vehicle to the dealer for assistance. Per the dealer's records, the work associated with the federal safety agency campaign #22V955000 and MBUSA recall #2023010002 had been completed in March 2023. However, that recall failed to address the source of the issue where water was improperly entering the spare tire wheel well. The dealer did not maintain any records as to the status of the fuel pump or signs of water entry when the recall was completed. The manufacturer refused to cover this repair under the associated recall. The failure mileage was approximately 141,000.

Filed Nov 17, 2023 · Fuel system · WA

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, the federal safety agency 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.

Filed May 11, 2023 · Fuel system, Lights · WA

Due to water in the spare wheel well, (Recall ID:22V955) our fuel module and fuel pump went out. While driving in traffic on I-5 our car stalled then stopped which put us at risk of a crash.The first time (July 2022) It was repaired by Cooper's Auto Repair), After the 2nd time it failed again in Aug 2022, once again as we were driving, our mechanic at (Boyle's Foreign Car Repair) Aug 2022 & Dec 2022 (replace) decided to do an inspection of the whole car to see why this was happening, upon inspection he found water in the spare wheel well, He pulled out the plug to stop accumulation. 2 months later (Feb 2023 )we received the recall letter. In the letter it states that MBUSA would reimburse repairs performed prior to the recall. MBUSA is now refusing to reimburse for replacement but also refusing to find and fix where the water in entering. We reside in a very wet part of the country and see this as a continuing issue. There also is condensation in the back tail lights, which was not there until this issue started occurring. The car was previously in S Cal so there was no issue with water accumulation until it was moved to the rainy Pacific NW. We are fearful of using this car during very wet times as we do not know if this (failure of pump/module) will occur as well as condensation and water being in the back tail lights possibly resulting in the car stopping during it being driven. Therefore putting our lives in potential danger of an accident.

Filed Dec 6, 2017 · Engine, Fuel system · 48,000 miles · FL

Tl* the contact owns a 2012 mercedes-benz ml350. While at a stop light, the vehicle stalled without warning. In addition, the radio and air conditioner failed to function. The failure recurred numerous times. The vehicle was taken to mercedes-benz of coconut creek (4250 sr 7, coconut creek, fl 33073, phone: (954) 406-1167) where it was diagnosed that the fuel pump failed, there was a leak in the air conditioning system, and the radiator failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The approximate failure mileage was 48,000.

Filed Mar 11, 2015 · Fuel system · 71,958 miles · CA

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.

Filed Oct 20, 2013 · Engine, Fuel system · 3,600 miles · CA

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.

Filed Jul 3, 2013 · Brakes, Engine · NY

Tl* the contact owns a 2012 mercedes benz ml350. The contact stated that the vehicle stalled without warning. The contact took the vehicle to the dealer where it was determined that the software needed to be updated. The contact was also told by the dealer that the front rotors and brakes needed to be replaced. The vehicle had not been repaired. The failure mileage was unknown, but the current mileage was 24,882.

Filed May 2, 2013 · Engine · 200 miles · CA

The vehicle stalled after the first week of picking up a brand new vehicle at a traffic light. Dealer replaced high pressure fuel pump, but the vehicle continued to stall on many different subsequent occasions randomly. There were a few times that the car died repeatedly on consecutive days. Dealer was unable to diagnose the exact problem since it occurs randomly, and mercedes was unable to provide any resolution to remedy stalling issue. Dealer mentioned that mercedes headquarter aware of the symptoms but has no fix in the mean time. Although the engine has stalled mostly during a complete stop, it could possibly stall while the vehicle is in motion, which could pose a greater risk to drivers especially female driver with a baby inside who does not know how to react appropriately in such endangered situation.

Filed Mar 13, 2013 · Engine · 9,000 miles · MD

I had this car for over an year and started to have random stalling problem when stops at traffic light. It has happened 3 times in the past year and called the mb dealer. They said they couldn't find the problem due to no error code was generated. So they don't fix it. I google on the website and saw a lot of posting regards of this issue on the mbworld.org I strongly feel this is a serious safety issue. Sudden stalling can cause a car accidents.