2019 Mercedes-Benz E 450 Electrical system Problems
- Complaints
- 5about this part
- Share
- 29%of 17 total for the year
- Median mileage
- 20,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the electrical system of the 2019 Mercedes-Benz E 450, 29% of the 17 complaints for this model year. Where a mileage was given, the median is 20,000 miles. 1 a fire, according to the filers. 2 recall campaigns on record are 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.
“I parked the vehicle in a parking lot. I walked away and it immediately started smoking. Shortly after that, flames appeared coming from the hood. Shortly after that, the entire vehicle was engulfed in flames.”
NHTSA complaint #11726787, filed 2026-03“I was driving about 30 mph and getting on to the highway. Once I got on a beep came on from the car and every single warning light came on the car. Check engine all warnings including emergency brake collision warning the list goes on and on. I immediately got off the highway and once I got to a complete stop the car was barely accelerating. I wasn’t able to shift gears from drive I was stuck in drive. Couldn’t park the car reverse or anything. I had to turn the car off. The car didn’t turn on and then after 5 minutes it turned back on. …”
NHTSA complaint #11668083, filed 2025-06“The contact owns a 2019 Mercedes-Benz E450. The contact stated while driving at various speeds and depressing the accelerator pedal, the vehicle hesitated while responding. Additionally, the contact stated that the transmission was slipping. The check engine warning light was illuminated. The contact stated that upon taking the vehicle to an unknown dealer, the check engine warning light turned on while the dealer was moving the vehicle into a parking space. The vehicle was taken to the dealer several times however, the dealer diagnosed that no issues were found. …”
NHTSA complaint #11519233, filed 2023-04, 20,000 miles“The primary failure involved the electrical system and speed control, which posed a significant safety risk to myself and other drivers. The issue first presented itself when I noticed intermittent warning lights and error messages flashing on the dashboard, including indicators for the electronic stability program (ESP), steering assist, and lane tracking features. These malfunctions created erratic driving conditions, including unexpected acceleration delays and inconsistent cruise control behavior. …”
NHTSA complaint #11658594, filed 2025-05“Central digital driver cluster and lighting behind all speedo/tachometer randomly turns off while driving unexpectedly then fades back on. - can not see control indicators for adaptive cruise control when display fades out - can not see what gear the transmission is in when display fades out - at night can not see speedo, tach, or any items on the display when it fades out Dealership said they could not duplicate and didn't want to replace the cluster, because they have to send the part back to mercedes engineering and if the part wasn't faulty, the dealership would have to absorb the cost…”
NHTSA complaint #11433288, filed 2021-09Related 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 E 450 2019, E300 2017–2019, S560 2018–2019 +4 more
- 18V761000Oct 29, 2018Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2019 Mercedes-Benz C300, C300 4Matic, C300 4Matic Cabrio, C300 4Matic Coupe, C300 Coupe, C300 Cabrio, C43…Covers: Mercedes-Benz E 450 2019, C300 2019, AMG CLS53 2019 +5 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…
- 11031553Apr 24, 2026Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles equipped with an 8-cylinder engine, the software of the engine…
- 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 2019 Mercedes-Benz E 450
4 complaintsEngine
4 complaintsTransmission and drivetrain
4 complaintsForward collision avoidance
3 complaintsBack-over prevention (rear camera)
2 complaintsSteering
2 complaintsAir bags
1 complaintsEngine cooling
1 complaintsExterior lighting
1 complaintsFuel system
1 complaintsLane departure
1 complaintsOther or unknown
1 complaints
← All problems reported for the 2019 Mercedes-Benz E 450
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