2018 Mercedes-Benz E400 Electrical system Problems
- Complaints
- 4about this part
- Share
- 17%of 23 total for the year
- Median mileage
- 22,777miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the electrical system of the 2018 Mercedes-Benz E400, 17% of the 23 complaints for this model year. Where a mileage was given, the median is 22,777 miles. 1 recall campaign on record is filed under a similar system.
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.
“On may 30, 2020, around 3 pm, my son was the driver and my wife and I were the passengers driving in jersey city, nj (USA). While changing lanes on the road, the car suddenly stopped functioning. All dashboard lights came on and it showed a car with zig zag lines and stated inoperable. We were in the middle of the road in a dangerous situations with cars going around us. The steering wheel froze and the brakes were not functioning. We tried to restart the car many times with the dashboard lights coming on and stating inoperable. …”
NHTSA complaint #11327065, filed 2020-06, 22,777 miles“The digital dash, which shows my speed, mileage, engine temperature, rims and fuel level goes blank. Then comes on for a few seconds and goes dark again. Vehicle only has 43k miles. MB dealer said this is not uncommon condition with the 2018 mb e400. Car is not safe to drive. MB dealer wants $6,100.00 to replace the unit. A software reboot will not work.”
NHTSA complaint #11688398, filed 2025-09“Backup camera does not work sometimes. A picture of the camera with a slash mark across it comes up on a black command screen. This is a big safety issue when I back up”
NHTSA complaint #11542077, filed 2023-09“Alternator failed on my E400 cabriolet 23,000 miles resulting in car shutting down while engine running. Required a tow to dealer service area, 35 miles away.”
NHTSA complaint #11544035, filed 2023-09Related recalls
- 20V449000Jul 31, 2020Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019 C300, C300 Coupe, CLS450, E450 Coupe and S450, 2017-2019 E300, 2018 E400 Coupe, E400 Stationwagon…Covers: Mercedes-Benz E400 2018, E300 2017–2019, S560 2018–2019 +4 more
Related 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…
- 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…
- 11031202Apr 7, 2026Complaint When closing the door, the side window may remain slightly open (short stroke position). Automatic window raising function of side window inoperative. NOTE: Window is…
- 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
Other parts of the 2018 Mercedes-Benz E400
6 complaintsEngine
3 complaintsSeat belts
3 complaintsSteering
3 complaintsTransmission and drivetrain
2 complaintsAir bags
1 complaintsBack-over prevention (rear camera)
1 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaintsLane departure
1 complaints
← All problems reported for the 2018 Mercedes-Benz E400
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