2013 Mercedes-Benz ML-Class Electrical System Problems

NHTSA VEHICLE SAFETY COMPLAINT SUPPORTING STATEMENT Vehicle: 2013 Mercedes-Benz ML350 I am submitting this complaint regarding a continuing safety concern involving water intrusion and electronic system damage in my 2013 Mercedes-Benz ML350. My vehicle was subject to a Mercedes-Benz recall involving water intrusion and related components. Despite recall-related repairs being performed, moisture and water intrusion concerns remain unresolved. During the diagnostic process, Mercedes-Benz personnel identified evidence of water and humidity in areas associated with vehicle electronics and control modules. The vehicle has experienced repeated mechanical and electronic issues following discovery of the water intrusion condition. Multiple repair facilities have been involved, and I have incurred significant diagnostic and repair expenses while attempting to determine the full extent of the damage. The primary concern is not ordinary wear and tear. The concern is that water intrusion has affected vehicle systems and that the recall remedy has not resulted in a complete resolution of the condition. I am concerned that moisture exposure may continue to impact vehicle electronics, control modules, sensors, and other safety-related systems. Mercedes-Benz USA has been notified and a case has been opened. The dealership has also been involved. However, despite escalation requests and requests for management review, I have not received a meaningful resolution. The dealership continues directing me back to Mercedes-Benz USA while Mercedes-Benz USA has not provided a final management response. I respectfully request that NHTSA review whether the recall remedy adequately addressed the water intrusion condition and whether additional investigation is warranted regarding continuing moisture intrusion, electronic system exposure, and potential safety risks associated with this condition. I am prepared to provide repair orders, recall documentation, photographs, diagnostic findin

Good morning ! I am an owner of a 2013 ML 350 . I live in San Diego ,CA ,92103 . I was driving my car on [XXX] and it was raining a lot . After around 30 miles I got to my destination parking area and my car died 20 feet away from the parking zone .I tried to reignite it but it wouldn’t start . I checked it with a OBD2 scanner and it was indicating a code U0109 - Lost communication with fuel pump control module . After looking into solutions and reasons for the issue online I came across a post regarding an existing recall with NHTSA with ID 22v955 regarding water intrusion in the spare wheel well portion of the trunk( The Wheel well is not water proofed and doesn’t have a drain port for water to escape ) . I proceeded with inspecting the area and of course it was full of water . The fuel pump control module is located in that area and it was damaged which shorted it and cause the malfunction of the vechile and the error code U0109 stated above . Tried calling Mercedes Benz but they confirmed about that specific recall but said my VIN is not part of it and I should file a claim or complain with you . I will attach proof and pictures of the water and the damaged component. My car now need to be towed and fixed on my expense because of Mercedes Benz negligence… Hopefully you can add my car to this recall and when this happens I would get some kind of reimbursement… Thank you for your time and understanding. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Started to have an issue with the blind spot assist showing inoperable. Shortly after depending on the outside temperature the AC would start shutting off and on. The days the temperature was above 95 degrees the AC would suddenly stop working. Took the vehicle to the dealer for AC service. Dealer reports the engine "back" wiring harness had been rubbing, exposing and chaffing the harness wires, and for safety concerns a complete harness replacement is necessary. When asked how was this possible since the harness clearance is a manufacture design. Was told it happens on these vehicles and currently there is no recall.

I was driving from Florida to my home in Washington, DC on September 4th, 2023 on I-95. Somewhere in South Carolina, a message appeared on my display that said the blind spot assistant was disabled. Soon thereafter, my turn signals quit functioning. At first chance, I pulled over and turned the car off hoping it was some kind of computer reset. That worked but only for an hour or so. I made it home ok but not having turn signals was very dangerous and very concerning. I took the car to a local DC Mercedes mechanic who ran a diagnostic but nothing came up because the systems were functioning at the time. He took the car for a drive and they stopped working for him. He said take it to a dealer. I have an appointment for next week. I also have searched for this problem on social and it is definitely a problem with other owners. The part is nearly $700 and it is a big job to pull the steering wheel and replace this. I think this is a serious flaw and consumers should not be burdened with non-working turn signals. I think it might be a design flaw in their switch. Please look into this if you think as I do. Thank you.

Turn signals stop working after driving a mile or so. If possible, I turn the car off and on. Turn signals work but fail again within a few miles. Hazard light work even when the turn signals fail. I’ve read this is a common issue searching the internet. Definitely a safety concern

2013 Mercedes Benz ML350 (W166) engine (m276) began misfiring. Palm Springs Mercedes Benz diagnosed faulty camshaft positioning sensor leaking engine oil into engine electrical harness which wicked through harness to ECU. Faulty (leaking) camshaft positioning sensor caused faulty harness, ECU, injectors, o2 sensors. Said common problem on these and other models and engines.

WARNING SIGN COMES UP : BLIND SPOT ASSIST INOPERATIVE . WHEN THE WARNING SIGN COMES UP THE RIGHT AND LEFT BLIND SPOTS IN THE MIRROR REMAIN LIGHT UP AND ALSO I AM NOT ABLE TO SIGNAL TO CHANGE LINES . THESE HAPPENED ALREADY 3 TIMES OVER PAST 3 MONTHS AND LASTS FOR HOURS WHILE ON THE HIGHWAY . I TRY TO STOP AT THE SIDE OF THE HIGHWAY , TURN THE CAR OFF AND ON STILL WON'T WORK FOR SOME TIME . I HAVE TAKEN VIDEOS OF THESE HAPPENING . *TR

I KEEP EXPERIENCING THE "PRE-SAFE LIMITED" WARNING. THE CAR BREAK STARTS FADING, AND THE CHECK ENGINE LIGHT REMAINED ON THE WORKING CONDITIONS. THIS SITUATION IS SO UNSAFE BECAUSE THE CAR BECOMES HEAVY AND THE STEERING TURNS HARD TO MANEUVER.