2020 Mercedes-Benz E350 Electrical system Problems
- Complaints
- 2about this part
- Share
- 25%of 8 total for the year
- Median mileage
- 400miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the electrical system of the 2020 Mercedes-Benz E350, 25% of the 8 complaints for this model year. Where a mileage was given, the median is 400 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Please see attached pdf. It concerns the trunk opening and closing mechanism which is supposed to signal when something is in the way before it closes. The trunk closed without warning on my head. Mercedes refuses to disconnect the trunk latch feature because I will not sign a release, which I will not do. See attached incident report filed with mb.”
NHTSA complaint #11374322, filed 2020-11, 400 miles“There was smoke coming from from the engine compartment and spontaneous fire started while the car was at a stop light. The car was totally damaged. The car has less than 15000 miles driven. It is still under warranty. Information was sent to Mercedes-Benz USA with a certified mail and immediately via email from the dealership. Also was reported where the vehicle was stored if they wanted to investigate the engine. Benz USA just wanted me to fill out their standard report form. The towing company also told me that they had to tow another Benz not long ago from engine fire.”
NHTSA complaint #11616110, filed 2024-09Related service bulletins
- 11036511Aug 24, 2026Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket…
- 11036190Aug 6, 2026Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search…
- 11035120Jul 17, 2026Complaint Hand detection system – malfunction / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping…
- 11033855Jun 12, 2026Complaint Service code B1 displayed in the customer menu does not match the workshop code displayed in the workshop menu, e.g., 505 or 550A, which includes a service A. Cause The…
- 11033185May 26, 2026Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the…
- 11033016May 26, 2026Complaint The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the HERMES control unit (N112/9) is not supported for gray-market…
- 11031256Apr 2, 2026Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket…
- 11029927Mar 4, 2026Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has…
- 11029087Feb 27, 2026Complaint This LI does Not apply to 223 or 206 which use a different generation of 48V systems. Please follow the relevant guided tests for the 223 and 206. For 223 with fault…
- 11029083Feb 25, 2026Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 2 | 40% |
| 2023 | 1 | 17% |
| 2022 | 1 | 11% |
| 2021 | 4 | 31% |
| 2020 | 2 | 25% |
| 2017 | 1 | 14% |
| 2016 | 9 | 18% |
| 2015 | 5 | 16% |
| 2014 | 38 | 14% |
| 2013 | 12 | 7% |
| 2012 | 19 | 9% |
| 2011 | 4 | 2% |
| 2010 | 17 | 9% |
| 2009 | 3 | 5% |
| 2008 | 18 | 10% |
| 2007 | 17 | 5% |
| 2006 | 19 | 5% |
| 2005 | 2 | 13% |
| 2004 | 1 | 10% |
| 2003 | 2 | 29% |
Other parts of the 2020 Mercedes-Benz E350
3 complaintsOther or unknown
3 complaintsFuel system
2 complaintsTransmission and drivetrain
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2020 Mercedes-Benz E350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology