fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
9,975 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2014 Mercedes-Benz E350 electrical problems

electrical problem

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2014 Mercedes-Benz E350 Owner Comments

problem #4

Mar 032016


  • 29,000 miles


While driving on the highway, I attempted a heavy acceleration to get the car up to traffic speed. Two times in the past 60 days, the car seriously malfunctioned with multiple dashboard indicator lights and the main text "pre safe functions limited" accompanied by a total loss of speed control. The accelerator became 100% unresponsive and I had to coast to an emergency lane. There was significant danger in both instances as I had to cross multiple lanes of traffic with no power to get to safety. The weather was clear and the external sensors were not obstructed by dirt or snow- which has previously caused the pre-safe functions limited message. I believe that the multiple errors indicated on the dashboard are all erroneous to the core issue of a sudden and total loss of power upon heavy acceleration. The resolution was to shift the car into park, push the ignition button as if turning the vehicle off, wait and restart. The car operates normally upon restart. Note that the engine appeared to already be off prior to shifting into park. It is as if the heavy acceleration killed the engine. This issue has potential fatal consequences if the driver is unable to get the car out of the lane of high speed traffic-- as I was in. A less experienced or panicked driver could easily fail to handle the situation and get rear ended at high speed as the car can only be reset by getting it into park and restarted. Similar blog posts online report the same with other Mercedes vehicles. I have had the car for four months and it has happened twice. Seems like a software/electronic issue causing the mechanical issue to me. Very dangerous.

- Northfield, IL, USA

problem #3

Apr 202015


  • 3,000 miles
I was traveling on highway 26 at approximately 60 mph getting ready to merge onto highway 526, when the entire digital warning panel lit up and then went dead, with the engine inoperable light coming on and asking me to refer to the owners manual. All power was cut from the gas pedal and I was lucky enough to be able to coast to a very small strip of median without being hit by any other vehicles. This is a very heavily trafficked area and charleston being a port city I was very fortunate that the trucks that were around me were able to avoid hitting me. If I had been in another situation, such as pulling out into traffic or trying to cross over a two lane highway the results could have been catastrophic to say the least. I have been told by the dealer that there was a bulletin issued involving the throttle valve actuator, topic # LI54.18-P-058597, version 9. they have not been able to tell me why this happened in the first place, cannot guarantee it will happen again and I would like to know why there was not a recall for this particular potentially life threatening issue? sincerely, [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Daniel Island, SC, USA

problem #2

Oct 132014


  • 4,900 miles
Driving on highway when abruptly car slowed down (lost cruise control), heard an instrument sound and noticed amber warning light on instrument panel "active blind spot assist inoperative", "active lane keeping assist inoperative" "histrionic plus inoperative", "pre-safe inoperative" - these warnings cycled repeatedly. Lasted 45-60 seconds, then everything returned to normal. Incident has occurred on 5 separate occasions. Have had car looked at for this twice and they can't find anything wrong to explain it.

- League City, TX, USA

problem #1

May 052014


  • 3,000 miles
The contact owns a 2014 Mercedes Benz E350. The contact stated that the lane control feature failed to work intermittently. The vehicle was taken to an authorized dealer. The technician was unable to replicate and diagnose the failure. The contact waited longer than six weeks for a response from the dealer who indicated that the concern was to be escalated to the manufacturer. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 3,000.

- Columbus, OH, USA

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