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Electrical systemPart report

2023 Mercedes-Benz EQS 450 Electrical system Problems

Complaints
12about this part
Share
34%of 35 total for the year
Median mileage
16,000miles
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.

NHTSA recorded 12 complaints about the electrical system of the 2023 Mercedes-Benz EQS 450, 34% of the 35 complaints for this model year. Where a mileage was given, the median is 16,000 miles. 1 of these say a crash was involved and 1 a fire, according to the filers. 4 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 am reporting a serious safety issue with my 2023 Mercedes-Benz EQS SUV. On multiple occasions, the vehicle has suddenly lost power and completely stopped while driving on the freeway without warning. During these incidents, a red warning symbol appeared on the dashboard (a red turtle icon), indicating a critical malfunction. These failures created extremely dangerous situations, as the vehicle lost the ability to maintain normal driving speed in active freeway traffic. …”

NHTSA complaint #11725988, filed 2026-03

“At approximately 10:30 p.m. on January 8, 2023 I, and three passengers (my wife, and another couple), were completing a one hour drive returning from an event in southern California. We traveled on the freeways as we headed home. The speeds on those freeways average between 65 and 75 miles per hour with the flow of traffic. I exited the freeway and pulled up to a traffic light. I made a right turn at the light, then traveled up the road. …”

NHTSA complaint #11501082, filed 2023-01

“The vehicle throws a “charging fault” error when I try to charge my vehicle with a high speed charger. I tried two different chargers and two different locations with the same result. The safety risk is a faulty high voltage battery system. I have not taken it to the dealer yet. This just happened today. My understanding is that this is a fairly widespread issue and MB is denying all warranty claims and blaming the charging station. The only warning is the “charging fault” message on the dash display.”

NHTSA complaint #11707193, filed 2025-12

“While making a left turn at low speed, I applied the brakes, but the vehicle did not respond as expected and instead appeared to drift, surge, or accelerate forward. The vehicle struck a fire hydrant and a bus stop pole before crashing into a tree. Airbags deployed and both occupants sustained injuries. I suspect a possible malfunction involving braking, propulsion, electrical, or speed control systems. No final cause has been determined. The vehicle should still be available for inspection. Mercedes-Benz USA has opened a case regarding this incident.”

NHTSA complaint #11731921, filed 2026-04

“On 05Jun23, EQS 450+ suddenly reduced the speed to 30mph on the SRT highway while I was driving with cruise control set to 70mph. This creates sudden deceleration in the car and slow down as well as on the left lane traffic where there was a following car behind me with high speed. This happens multiple times when I was driving on the different highways in Texas as well as in FM roads. Car’s Behavior while Cruise control is SET to 70+mph and Intelligent Recuperation is ON. Highway Speed Sign is 70mph. …”

NHTSA complaint #11528510, filed 2023-06

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2024240%
20231234%
2022926%

Other parts of the 2023 Mercedes-Benz EQS 450

Forward collision avoidance
20 complaintsBrakes
12 complaintsOther or unknown
3 complaintsBody and structure
2 complaintsVehicle speed control
2 complaintsAir bags
1 complaintsFuel system
1 complaintsLane departure
1 complaintsSuspension
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaints

← All problems reported for the 2023 Mercedes-Benz EQS 450

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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