*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Service brakes, hydraulic
The contact owns a 2011 Mercedes-Benz ML350. The contact stated that while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard. The vehicle failed to stop at the stop sign. The contact swerved to the right and struck the curb. The vehicle was then driven to the residence. The manufacturer was made aware of the failure and informed the contact that the vehicle was previously repaired under NHTSA Campaign Number: 22V315000 (Service Brakes, Hydraulic). The failure mileage was approximately 129,000.
Sep 27, 2026 · 129,000 milesEngine
The contact owns a 2011 Mercedes-Benz ML350. The contact stated that while driving approximately 60â65 MPH, the brake pedal was depressed and the vehicle started sliding. The contact stated that the vehicle stalled. The brake warning light was illuminated. The vehicle was towed to a tow lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 88,000.
Jul 21, 2026 · 88,000 milesService brakes, hydraulic
The contact owns a 2011 Mercedes-Benz ML350. The contact stated that while the vehicle was parked and turned off, there was brake fluid leaking from the vehicle with the BRAKE warning light illuminated. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was not available.
Apr 22, 2026Service brakes, hydraulic
The contact owns a 2011 Mercedes-Benz ML350. While the daughter was driving at an unknown speed, several unknown warning lights illuminated on the instrument cluster. The driver heard an abnormal hissing or squeaking sound while depressing the brake pedal. The vehicle was driven back to the residence. The contactâs son then drove the vehicle to a shopping center, and when the brake pedal was depressed, the brake warning light illuminated, and the vehicle unexpectedly entered SAFE Mode. The contact was unable to shift to drive(D). The brake pedal was depressed and went to the floorboard. The vehicle was towed to a dealer. The vehicle was not yet diagnosed or repaired. The contact stated…
Mar 2, 2026 · 111,000 milesService brakes
Corroded brake lines. This is a well known issue for many ML350s built during this time period. This car was built with steel brake lines that easily corrode and present a serious safety issue. While driving a few months ago, the car suddenly lost the ability to brake because a line rusted completely through. The mechanic noted the lines are rusted in many other places as well. Mercedes refuses to correct this under warranty.
Jul 1, 2025Service brakes
ABS Pump defective. Dealer refuses to replace this safety item.
Jul 21, 2025Electrical system
I believe the electrical system may be defective as ever since I have had it the light bulbs frequently have to be changed. We own three vehicles in my households (the other 2 are non-Mercedes) and none of my other vehicles do this. The latest issue with the electrical system is that the rear tail lamp and power lift gate. I was told there was water that was getting in from somewhere but mechanic could not find where. I need a new SAM module and that is why my power lift gate motor does not work. As I did some research online, the same exact problem was recalled on a the same model but the 2009 model and I have the 2011 model. I believe my car should be part of the same recall which I…
Mar 1, 2025Service brakes
I was driving locally and when I put on the brakes for a car exiting a street. Immediately my car sensor went on and my car brakes started to fail. It was a very scary situation. This is a known problem with Mercedes. Mercedes has a recall for the brake booster but will not fix the booster without the brake like being fixed. I have reached out to foreign motor car dealerships and this issue with the brake line is a known problem and a safety issue but Mercedes is not taking responsibility for this issue that can kill someone for their parts that are corroding and rotting. Mercedes too years to take responsibility for the brake booster which can kill people and now they are not taking…
Aug 15, 2024
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.