2016 Mercedes-Benz E400 Electrical system Problems
- Complaints
- 1about this part
- Share
- 3%of 34 total for the year
- Median mileage
- 134,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the electrical system of the 2016 Mercedes-Benz E400, 3% of the 34 complaints for this model year. Where a mileage was given, the median is 134,000 miles.
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.
“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. …”
NHTSA complaint #11644475, filed 2025-02, 134,000 milesRelated service bulletins
- 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…
- 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…
- 11028834Feb 13, 2026Complaint Check engine light on with the following fault is current in the VGS Control Unit: P084300 Oil pressure sensor 'A' has a short circuit to positive stored in VGS control…
- 11026835Dec 18, 2025Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The…
- 11026611Dec 11, 2025Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5…
- 11022385Aug 28, 2025Complaint Message in Instrument Cluster for "Active Distance Assist not enabled, but can be purchased subsequently" even if Digital Extra: Active Distance Assist DISTRONIC (207)…
- 11020872Jul 16, 2025Complaint Commissioning not possible after replacement of TRANSMISSION 722.9 or of electrohydraulic controller unit (EHS) or of repair kit controller unit (VGS). Cause The wrong…
- 11018626May 22, 2025Complaint After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle, the message "SOS - Service not activated" is displayed in the…
- 11017119Apr 21, 2025Complaint 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…
- 11015640Mar 5, 2025Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party…
Electrical system: other model years
Other parts of the 2016 Mercedes-Benz E400
22 complaintsSteering
4 complaintsBrakes
2 complaintsEngine
2 complaintsBack-over prevention (rear camera)
1 complaintsForward collision avoidance
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaintsWheels
1 complaints
← All problems reported for the 2016 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