2024 Mercedes-Benz EQS 450 4MATIC

I am submitting this report regarding a serious and potentially fatal unintended vehicle acceleration incident that occurred immediately after my vehicle was returned from repair. I originally brought the vehicle to the dealership’s body shop following a collision. The repairs included the replacement and repair of cracked grille covers, sensors, rear damage, and the rear camera system. The vehicle remained at the repair facility for approximately one month during the repair process. After finally picking up the vehicle, I drove and tested it for many miles without noticing any obvious issues. I then parked in front of a shopping center. The vehicle was fully stopped, and I shifted the transmission into PARK. After engaging PARK, I removed my foot from the brake pedal. At that exact moment, the vehicle suddenly and violently lunged forward on its own without any warning or driver input. The vehicle accelerated into a concrete pillar located less than two feet in front of the parking space. The impact was severe enough to deploy two airbags and caused a very loud, explosive sound inside the vehicle. The force of the collision shocked the interior seats and coverings, and I was left disoriented and briefly unconscious. This incident could easily have resulted in a fatality if a pedestrian or another person had been standing in front of the vehicle at the time of the unintended acceleration. I am requesting a full investigation into the cause of this sudden forward movement after the vehicle had already been stopped and shifted into PARK, especially considering the recent repair work involving sensors and collision-related components. This was an extremely dangerous incident and raises serious concerns about vehicle safety and possible malfunction before or after repair.

NHTSA ID

11737017

Incident

Apr 24, 2026

Signs of arcing on high voltage charge port. The issue was first identified and reported to an authorized Mercedes-Benz dealership (Pleasanton, CA) at approximately 41,000 miles. Despite the safety implications, the dealership chose not to perform a repair has denied warranty coverage, claiming Electrify America charging station for the caused.

NHTSA ID

11721984

Incident

Jun 9, 2025

While driving, the vehicle’s lane keeping system applied an unintended and aggressive steering input during a lane change. I was merging left when the system suddenly forced the steering sharply to the right without driver command. This was not a gentle correction—it was a strong, unexpected movement that could have caused a collision if another vehicle was nearby. In addition, the vehicle has ongoing intermittent ADAS malfunctions, including false forward-collision warnings, proximity sensors activating with no obstacles present, and Park Assist activating while the vehicle is moving on normal roads. I’ve also received messages such as “camera obstructed/visibility blocked” and “content unavailable in current vehicle position,” with ADAS features disabling themselves temporarily. These issues have occurred multiple times and continue to reappear even after several repair attempts by the dealer. Because the defects happen randomly and cannot be reliably reproduced, the vehicle feels unsafe to operate and unpredictable. The steering, sensors, and driver-assist systems do not appear to function correctly or consistently. The vehicle is available for inspection.

NHTSA ID

11700001

Incident

Nov 17, 2025

Complaint When switching the front passenger display on and off, sporadic images may be shown that are similar to stains on the display. This complaint need not be a permanent one, it may disappear again on its own. Attachments 1648459315482 (1).jpg 1648459315528.jpg Cause Implausible video transfer from head unit during start and switch‑off sequence. These images (artifacts) are of a purely cosmetic nature only and they do not impair the function. Remedy Software update of MBUX (A26/17) to software release E316.5 or higher.

Complaint When switching the front passenger display on and off, sporadic images may be shown that are similar to stains on the display. This complaint need not be a permanent one, it may disappear again on its own. Cause Implausible video transfer from head unit during start and switch‑off sequence. These images (artifacts) are of a purely cosmetic nature only and they do not impair the function. Remedy Software update of MBUX (A26/17) to software release E316.5 or higher.

Issue A software update will be performed that provides enhancements to the robustness and system stability of the communication module. The update is free of charge and runs in the background, which takes about 8 minutes to install. During this time, the vehicle can be driven without any restrictions, and the new software will be active with the next ignition cycle. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see attached video. If necessary, apply lubricant to the sleeves.

A software update will be performed that provides enhancements to the robustness and system stability of the communication module. The update is free of charge and runs in the background, which takes about 8 minutes to install. During this time, the vehicle can be driven without any restrictions, and the new software will be active with the next ignition cycle. Remedy MBUSA will conduct an OTA service campaign. Remote software updates are automatically downloaded and installed in the customer’s vehicle free of charge and do not require a dealer visit.

Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration is most likely due to excessive lateral runout on the rotor or hub/wheel bearing, the system as a whole needs to be checked for other possible contributors. 1. Prior collision damage. 2. Excessive vehicle sitting times without rotating components. 3. Wheel bearing/hub lateral runout. 4. Wheel mating interface has been overtightened (did not follow WIS torque procedures). 5. Mating interfaces have been excessively modified (painted, gouged, bent, etc...). Remedy Read through the entire attached worksheet prior to performing. After performing, please review the final page and perform work accordingly. NOTE: This document is not pre‑authorization or otherwise dealing with warranty. This is intended for diagnostic purposes only. If there are any questions on how to proceed OR The work sheet has been performed and the vehicle has returned with the same concern. Please perform the measurements as seen in the worksheet again and open a TIPS case to the Body, Chassis, and Entertainment team.