2014 Mercedes-Benz ML350: engine stalls while driving

Filed Nov 20, 2025 · Fuel system · CA

As we were driving 50mph, the car stalled and lost all power. The dashboard lights all lit up and the car wouldn't start. I don't get unnerved easily and it was fairly intense not being able to move your car out of traffic. After about 5 mins, the car would start again only to stop a minute or so later. After taking the car to the dealer, the issue stemmed from the fuel pump electronics board getting wet in the spare tire wheel well where water was accumulating. This was part of the recall and the dealer installed a drain and replaced the board. HOWEVER, this issue again happened nearly one year later in our next rainy season. After taking it to the dealer, they said WE would need to replace the electronics board ourselves. We asked about the recall and they said they fixed the issue by installing the drain plug and there was nothing else they could do for us. Even the service adjuster was upset and very sympathetic to our plight as the car was obviously not fixed. Even though the drain plug was installed, the water was still acumulating in the wheel well. It seems apparent to me, and several others who have complained about the same issue, that the recall fix has not addressed the main issue of why the water is coming in and why it's still not draining. Unfortunately we're going to have to fork over $1200 to have it fixed. My ask to the federal safety agency is that this issue be readdressed with Mercedes. I would like them to be notified that the recall does not address the underlying issues and the solution they provided does not fix the problem. I appreciate your time in considering this.

Filed Jun 20, 2025 · Fuel system · 60,000 miles · CA

The contact owns a 2014 Mercedes-Benz ML350. The contact stated while the vehicle was idling in the driveway, the vehicle stalled. The contact stated that AAA added fuel to the vehicle, and the vehicle was able to restart and operated as needed. The contact stated that the vehicle was taken to the dealer for the recall repair of the federal safety agency Campaign Number: 22V955000 (Fuel System, Diesel, Fuel System, Gasoline), and the dealer installed a water drain plug on the vehicle. The contact stated that the check engine warning light was later intermittently illuminated. The vehicle was taken to Complete Performance, where it was diagnosed with fuel pressure failure. The contact replaced the gas cap; however, the failure persisted. Additionally, the contact stated while driving 45 MPH, the vehicle stalled while there was sufficient fuel in the fuel tank. The contact was able to pull over to the side of the road. The vehicle was able to restart after fuel was added to the vehicle. An unknown dealer was notified of the failure and informed the contact that the fuel pump was not previously replaced during the recall repair of the federal safety agency Campaign Number: 22V955000( Fuel System, Diesel, Fuel System, Gasoline). The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 60,000.

Filed Jul 2, 2024 · Electrical, Fuel system · IL

ML350 engine stalled while driving on an expressway and would not turn back on. ML350 needed to be towed where it was determined that water accumulated in the spare tire wheel well, leading to the fuel pump short circuiting. This is directly related to the federal safety agency campaign 22V955000. That recall repair was completed prior to this incident. Per the technician, the recall repair installed a water drain plug to prevent the water accumulation. This repair effectively failed - the drain plugs malfunctioned and were not allowing water to drain. MBUSA deny’s responsibility for the failing drain plug - stating that the trunk weatherstripping is the root cause, not the failing drain plug. This is an unacceptable response and worth of the recall being expanded. The fuel pump control unit can still short out if MBUSA’s poor excuse of a recall fix fails as it did with mine.

Filed Feb 21, 2024 · Fuel system · KY

The contact owns a 2014 Mercedes-Benz ML350. The contact had received notification of the federal safety agency Campaign Number: 22V955000 (Fuel System, Diesel, Fuel System, Gasoline). The vehicle was taken to a dealer and the recall repair was performed. Soon after the recall repair, while the contact's wife was driving 25 MPH, the vehicle stalled. The contact was unaware if any warning lights had illuminated during the failure. The vehicle was towed to an independent mechanic where it was discovered that there was moisture in the spare tire wheel well. The moisture damaged the fuel pump control unit which was linked to the recall. The contact attempted to reach the manufacturer but was unsuccessful. The vehicle was taken back to the dealer but was not repaired and remained in dealer possession. The failure mileage was unknown.

Filed Jan 30, 2023 · Electrical · 60,000 miles · CA

The contact owns a 2014 Mercedes-Benz ML350. The contact stated that while at a stop light, the vehicle lost motive and electric power and stalled without warning. The contact restarted the vehicle, but the vehicle failed to remain running. The vehicle was towed to an independent mechanic and the contact was informed that water had intruded into the rear of the vehicle causing electrical failures. The vehicle was not repaired because the Insurance Company deemed the vehicle a total loss. The manufacturer was contacted but offered no assistance. The failure mileage was 60,000. The contact stated that the interior of the vehicle has to be dried out first in order to assess the damage to the electrical system. The contact noted the failure mileage was 60379.

Filed Dec 20, 2022 · Body, Electrical · CA

After a weekend of incessant rain, while driving a short distance (10 minutes) , this low-mileage, well-maintained 8 year old SUV suddenly stalled, Engine appeared to have powered down and the yellow Engine light came up and pressing gas pedal didn't do anything. I was fortunately able to press the Power button once frantically and re-start it once more and pull over to the side but the car refused to power on thereafter. After investigations by the shops, it appears there was water leaking "through" the body of the vehicle and into the area below the interior of the car, short circuiting Fuel Driver and stalling the car (which they subsequently repaired after draining the water and replacing/re-programming the fuel pump driver) before handing it off for the leak identification work. The car was subsequently taken to a specialist shop to figure out the leak, and they are unable to identify any reasonable source of the water leak and insurance is so far claiming this is "wear and tear". In the course of the testing, the *same* issue happened again and the car stalled while driven by the shop personnel and they could hear the sound of water inside the cabin all the way up to the front. They are unable to identify the source(s) of the leak and at this point, the car has been unusable for over 4 weeks as Insurance continues to push back and the shop can't do the additional work to identify the source in the body without insurance approval. I made attempts to contact the manufacturer but their only available contact is their Customer Support (no email/chat option) who refused to discuss this as it didn't pertain to them directly and re-directed me to talk to my own insurance company. I even reached out via Twitter but got no response. This expensive luxury SUV is not just unreliable at this point but *dangerous* where there are mysterious water leaks under natural conditions like rain leading to car stalling while in motion.

Filed Sep 7, 2022 · Electrical, Engine · IL

55,000 Miles now Engine shuts off while driving and steering wheel locks engine light comes on, we have had this problem starting at about 30,000 miles. They first said it was sensors which we replaced several times thousands of dollars later still have problem. It is currently at dealer for a month now and they told us we need a whole engine harness replaced for $11,000 but can't be sure this is the problem. Has anyone else had these problems please contact me [XXX]. [XXX] IL INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Sep 22, 2016 · 34,000 miles · MA

2014 ml350 shut off while driving in the fast lane of a major highway. I had taken the vehicle for service, then three wks later because the car was losing power. The dealership checked it over the next day and assured me the car was perfect and had found no problems. The next day the car shut-off on the highway. The car was towed to the dealership where they eventually discovered a defect in the car. I no longer feel safe driving this vehicle.

Filed Dec 10, 2014 · Engine · 6,138 miles · GA

Tl* the contact owns a 2014 mercedes benz ml350. While driving 40 MPH, the engine stalled. The contact was able to restart the vehicle. The vehicle was towed to a dealer who stated that the engine module pins were defective and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 6,138. Updated 7/23/15*cn the consumer requested to have the post removed.