2014 Mercedes-Benz E350 electrical problems

Filed Sep 4, 2025 · Electrical · 300,000 miles · KY

Odometer Fraud. The contact purchased a 2014 Mercedes-Benz E350. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the mileage was 109,550. It was later discovered that the mileage on the Title was approximately 300,000.

Filed Jul 31, 2025 · Electrical · CA · fire

I've had the car for 3 years and its all stock. It has 38,500 miles and today out of no where the driver side speaker in the door started making a crackling and popping noise. Smoke started coming from the speaker and filled the cabin. I quickly pulled over and turned off the car, because the smell of plastic burning was horrible. I was immediately alarmed by this and let the car cool down. I started driving again and it started again crackling and alot of smoke coming from the speaker. I called my mechanic and he said that that car had a known problem for a short and others had complained about their speakers melting due to overheating from the amplifier. He quickly searched the fuse box numbers and had me pull fuse #67 that disarmed the amp and speakers but allowed me to drive the car again. There is no warning and this is extremely dangerous due to a possible car fire. I am just thankful that my wife or children were not driving this car when this happened. I researched the problem more and I can't believe there has not been a serious recall for those amps that came with the car.

Filed Dec 30, 2024 · Electrical · SC · fire

While driving in stop and go traffic I heard a loud popping noise from the dash area and smoke started filling the cabin. I called a DC area dealer service dept and was told to exit the DC beltway and un plug the audio amplifier in the trunk left access door That stopped the popping noise and the smoke .

Filed Dec 14, 2024 · Electrical · CA

The heater temperature is not consistent and keeps fluctuating. When I set the temperature to 80°F, it initially blows hot air, but after about 10 seconds, it starts blowing colder air. To get consistently hot air, I have to set the temperature to the maximum.

Filed May 26, 2024 · Brakes, Electrical · NY

Suspension Rear Sub-frame rusted through, rear Lower control arm disconnected from rear sub-frame due to rust/corrosion. It is available for inspection. While braking at highway speeds the car fishtailed and I almost lost control of the vehicle. This has not been confirmed or inspected by any service, Insurance or Police entity. No warning lights, messages etc. Brakes: Rear brake lines are severely corroded in the same area as the rear sub-frame. Electrical System: Battery continuously discharges and is dead after 5 hours.

Filed May 22, 2024 · Electrical · IL · fire

While driving in traffic there were loud popping and crackling sounds from the rear speakers. Then smoke appeared and an acrid burning smell. The smoke and loud sounds continued after I pulled over and turned the key off. I removed the fuses for the sound system and it remains inoperable. I went home and searched for this problem on the web and discovered that it is a common problem on 2014 Mercedes E350's. Despite this being cited as a common problem by owners, there is no recall. I called Mercedes-Benz USA and they reported that they were not aware of this problem. This event was very alarming and could have caused an accident when the smoke was coming into the passenger compartment. I believe it qualifies for a recall.

Filed Apr 19, 2024 · Electrical, Engine · CA

My 2014 Mercedes started getting a fault light with multiple performance issues. Mercedes dealer where I can carry out my routine maintenance diagnosed the issue to the electrical harness being contaminated with engine oil and it needed to be replaced on the engine because of a known issue whereby oil from the upper camshaft sensors seep into the harness and makes its way to ECU and causes possible failure of the engine control, which could lead to shutting down or worse, incorrect engine timing which would lead to incorrect detonation at the compressors and subsequently engine failure at critical operational phase. This below link and attached document describes the issue well. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 12, 2023 · Electrical · OH

While cruising , car stalled after it beeped intermittently for a few minutes . On checking , the shop found that ignition switch assembly module has failed & stopped working . Strangely , the Mercedes-Benz dealer on Montgomery Road , Cincinnati refused to fix this , though the car was initially towed to them . This is suspicious action on the part of Mercedes-Benz dealer . The dealer acted as if they do not want this problem to become public .

Filed Aug 28, 2023 · Electrical · NJ

Electrical burning smell and buzzing coming from car entertainment system speakers. Did not stop even when entertainment system was turned off. Had engineer diagnose and issue is the rear subwoofer. Had to remove fuse or disconnect cables to stop issue.

Filed Apr 12, 2023 · Electrical, Steering · MA

My electric power steering failed. It often resets and can be unpredictable when it wants to fail again. It’s an intermittent problem that local dealer tried to fix with a software update but did not work. I was told I need a new steering rack at $5-6k which is unacceptable for any vehicle that has been maintained it’s whole life . My car is 8 years old with 100,000 miles with full service records I feel like this is a premature failure of the electric power steering