There are 8 owner-reported electrical system complaints for the 2016 Mercedes-Benz E-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2016 Mercedes-Benz E400. The contact stated that upon starting the vehicle, there was a knocking sound coming from the vehicle. The check engine warning light was illuminated. The automatic brake and Adaptive Cruise Control warning lights were illuminated. The emergency braking system engaged independently. The vehicle was taken to an independent mechanic who determined that there was oil leaking from the gasket and was dripping onto the engine. The contact called the local dealer, who confirmed that there was no recall under the VIN. The vehicle was not diagnosed or repaired. The failure mileage was approximately 134,000.
Q1: Yes, it is available for inspection upon request. The instrument cluster showed some messages* randomly appearing/beeping on and off but there were other issues present: • Acceleration not possible in drive • At one point transmission would not shift from gear 3 • *Speedometer would go up and down randomly until it eventually stayed at 0 physically and digitally as I was going 55-60 MPH • *Check Engine light ON • *Red ‘Brake’ light ON • *ABS failed • *Distance sensors failed • *Stability control failed • *Electronic braking system failed • *Power steering failed • *Cruise control failed • *Mercedes PRE-SAFE failed • *Blind Spot Assist failed • *Lane Keeping Assist failed • *Adaptive Highbeam Assist failed • *Mileage was not displaying on the dash • Car would not shut off as I pushed the off button when I managed to eventually stop • *Climate temperature sensor reaching temps of 127 degrees Fahrenheit. Q2: I lost control of the vehicle while driving on the highway at relevant speeds. I was unable to safely stop for some time. If this had been at night, the issue would have been even more dangerous. This car has previously slammed on the brakes erroneously (no visually perceived danger of a forward collision). These previous brake slamming issues happened once in a traffic jam on the highway and once on a main road. Q3: Not that I know of or remember, no. Q4: Before this latest incident, I have previously left my car at the dealership’s workshop to be inspected for some relevant issues and concerns that I have had. It was there for almost 2 months on one occasion. Q5: There was only one warning lamp on the instrument cluster related to the collision prevention assist being inoperative. This message has been on the dash for maybe a year or more. The times it previously slammed on the brakes erroneously, no messages were on the dash.
I believe there is faulty wiring in the door speaker front passenger side. It causes crackling and humming. It lessens some when you turn ECO off. Concerned it could ignite a fire. Once told by dealer it’s caused by rain going into the door. Next time told that just to look at the problem would be around $600 because it has steel doors??
The contact owns a 2016 Mercedes-Benz E350. The contact stated while driving 30 MPH, the vehicle started shaking without warning. The vehicle was taken to the dealer for diagnostic test, and the mechanic stated that the ignition coil needed to be replaced. The vehicle was not repaired due to parts availability. The manufacturer was contacted and referred the contact to the dealer. The failure mileage was 63,000.
I was driving on North Shepherd Drive in Houston, TX, at a speed of approximately 35 MPH. While I was lightly braking to slow down for an upcoming intersection where I wished to turn, the car flashed 2 error lights--Frontal Collision Avoidance System Inoperable, and Traction Control System Inoperable. At that moment, the car began to accelerate out of my control. It began to accelerate at a pace comparable to a full-throttle acceleration. At that moment, I turned off the vehicle and coasted to the side of the road. After a moment, I turned the car back on, electrical components responded as normal. However, there was a fluttering movement on the RPM levels on the tachymeter--even at idle levels.
TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ E350W. CONTACT STATED THAT WHILE DRIVING AT 70 MPH, THE DRIVER SIDE AIRBAG WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO (MERCEDES-BENZ OF WEST HOUSTON 1025 HIGHWAY 6 N, HOUSTON, TX 77079, (281) 492-5800) WHERE IT WAS DIAGNOSED AND IT WAS DETERMINED THAT THE DRIVER AIRBAG GASKET SEAL, CABLE CONNECTOR WIRING HARNESS FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE CONTACT MENTIONED NHTSA CAMPAIGN NUMBER: 17V177000 (ELECTRIL SYSTEM) AS A POSSIBLE SOLUTION TO THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE BUT NO FURTHER ASSISTANCE WAS PROVIDED. THE FAILURE MILEAGE WAS APPROXIMATION 41,166.
MY COLLISION PREVENTION MADE MY 2016 MERCEDES BENZ E400 SLAM ON THE BREAKS WITH NO CARS AROUND OTHER THEN THE CAR PARKED TO THE SIDE OF THE ROAD AND THE CARS BEHIND ME.
TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ E350. THE CONTACT STATED THAT THE AIR BAG WARNING INDICATOR RANDOMLY FLASHED. THE ON STAR COMMUNICATION SYSTEM GENERATED REPORTS AND CALLED TO INQUIRE IF THERE WAS A CRASH. THE DEALER (MERCEDES-BENZ OF BEVERLY HILLS, 9250 BEVERLY BLVD, BEVERLY HILLS, CA 90210, (310) 659-2980) WAS UNABLE TO DISCONNECT THE ON STAR COMMUNICATION SYSTEM AND STATED THAT THE CONTROL UNIT PREMATURELY FAILED BECAUSE OF COFFEE THAT MAY HAVE SPILLED IN THAT AREA. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE CONTACT WAS UNCERTAIN IF THE VEHICLE WOULD BE REPAIRED. THE VIN AND FAILURE MILEAGE WERE NOT AVAILABLE. ..UPDATED 10/25/17 *BF *JS
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026