2015 Mercedes-Benz ML350: engine stalls while driving

Filed May 22, 2026 · Fuel system · NH

The failed/malfunctioning component appears to be the fuel pump controller / fuel pump control unit, and possibly the fuel pump system. The Mercedes-Benz dealer identified water/moisture-related damage and corrosion at the fuel pump controller area. The failed component should be available for inspection if the dealer preserves the part during repair. I have requested that the dealer not discard the damaged component. My safety and the safety of others were put at risk because the fuel pump controller is related to fuel delivery. If it fails, the vehicle may not start, may lose fuel supply, or may stall while driving. This creates a safety risk, especially if the vehicle stalls in traffic, at an intersection, on a highway, or during normal driving. The problem has been confirmed by a Mercedes-Benz dealership. The dealership diagnosed water/moisture damage to the fuel pump controller area and provided an estimate of $768.22 for fuel pump controller replacement, plus $244.88 for the inspection fee. The dealer also indicated that this was the first inspection and that the fuel pump itself may also need further inspection or may have related damage. The vehicle/component has been inspected by a Mercedes-Benz dealership. Mercedes-Benz USA / the manufacturer’s representative has also reviewed the case through its goodwill process, but they refused to treat it as recall-related coverage. To my knowledge, the vehicle has not been inspected by police or insurance representatives. Prior to the current failure, the vehicle had starting/no-start related symptoms beginning around the middle of 2023. The engine could not start successfully at times. I do not recall receiving a clear warning lamp or message specifically identifying the fuel pump controller before the failure. However, the symptoms were consistent with a fuel delivery problem, and the dealer later confirmed water/moisture corrosion damage in the fuel pump controller area.

Filed May 20, 2024 · Fuel system · 120,000 miles · NJ

The contact owns a 2015 Mercedes-Benz ML350. The contact stated while reversing, the vehicle stalled and failed to restart. The vehicle was towed to the local mechanic who determined that the fuel pump was faulty and needed to be replaced. The fuel pump was replaced, and the vehicle was repaired. The local dealer and manufacturer were notified of the failure, but no assistance was offered. The contact was informed that the VIN was included in the federal safety agency Campaign Number: 22V955000 (Fuel System, Diesel, Fuel System, Gasoline). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 120,000.

Filed May 22, 2023 · Fuel system · 104,000 miles · LA

The contact owns a 2015 Mercedes-Benz ML350. The contact received notification of the federal safety agency Campaign Number: 22V955000 (Fuel System, Diesel, Fuel System, Gasoline) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated while driving approximately 40 MPH, the vehicle started to lose motive power and was making an abnormal sputtering sound as if the vehicle was running out of gasoline. The contact stated that the vehicle stalled with the check engine warning light illuminated. The contact pulled over and was able restart the vehicle. The failure had become a recurring failure. The manufacturer had not been made aware of the failure. The failure mileage was approximately 104,000. Parts distribution disconnect.

Filed Apr 14, 2023 · Engine · CA

Engine stalled multiple times even though it has been serviced multiple times at multiple dealers.

Filed Jun 21, 2022 · Suspension · FL

The contact owns a 2015 Mercedes-Benz ML350. The contact stated that while the vehicle was parked in the driveway, she noticed an unknown fluid leaking from the vehicle. Over time, the contact noticed that an unknown pink fluid had also started to leak form the vehicle. On one occasion while driving 25 MPH, the vehicle started to hesitate with an abnormal popping sound coming from the vehicle. The contact stated that dark blue smoke was coming from the vehicle. The vehicle eventually stalled without warning. The vehicle failed to restart for almost an hour. The vehicle eventually restarted after multiple attempts and was driven back to the residence. The following day, the vehicle was towed to the dealer where they discovered that water was leaking into the exhaust and had caused the failure. Upon investigation, the contact discovered the federal safety agency Campaign Number: 18V272000 (Suspension) which she linked to the failure. The manufacturer was notified of the failure and the contact was informed that the VIN was not under recall. The vehicle was not repaired. The failure mileage was unknown.

Filed May 24, 2016 · Visibility · 22,000 miles · CT

Tl* the contact owns a 2015 mercedes-benz ml350. While driving approximately 35 MPH in the rain, the windshield wipers stalled and became stuck. The wipers restarted momentarily and then stopped working again without warning. The vehicle was taken to a local dealer where it was diagnosed and the wiper motor was replaced. The failure recurred and the vehicle was taken back to the dealer where the wiper transmission was replaced. The manufacturer was made aware of the failure and consulted with the dealer. The failure mileage was approximately 22,000.