Mercedes-Benz EQS 450

CRITICAL SAFETY DEFECT: Recurring automated ADAS sensor failure causing maximum-force phantom braking without warning or driver input. VEHICLE IDENTIFICATION: 2023 Mercedes-Benz EQS 450 4MATIC SUV (VIN: [XXX]). CHRONOLOGY OF LATEST INCIDENT: On Wednesday, XXX, at approximately 7:20 a.m. MT, I was driving eastbound on [XXX]. A few yards after passing directly under the Lite Rail underpass, and before entering the right lane to turn onto [XXX], the vehicle abruptly and violently engaged its…

The center console display (MBUX) on this 2023 EQS 450 4MATIC fails while the vehicle is in use. There is no warning lamp, chime or message first. Sometimes it flickers on and off; other times it goes fully blank and stays blank, unresponsive to touch. Owner video shows the display working and then completely blank 0.4 seconds later. When the screen is blank the rearview backup camera is unavailable. Selecting reverse produces no image at all. The rear camera image appears only on that center…

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…

Odometer Fraud. The contact leased a 2023 Mercedes-Benz EQS 450 X4. The vehicle was a dealer sale. After returning the lease vehicle to the dealer, he was informed the odometer closure was not available during the drop-off and it would be emailed. The contact stated that the vehicle was returned with the mileage at 17,000. The inspection report also indicated that the odometer reading was 17,000. The contact received a bill that indicated that the mileage was 7,000. The finance office was…

Several times, the car's panic braking has randomly slammed the brakes and tightened the seat belt. After the first few times, I took it to Mercedes and they re-uploaded software which was hard for them for some reason. It fixed the problem. Luckily, I had always been on small streets. But today, the panic braking happened again, only this time, I was on a major road (4 lanes at 35 mph) and, with nothing around me, no cars in front of me, the panic braking and seatbelt tightening happened…

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.

On the date of purchase, while driving approximately 50 mph, the vehicle’s hood opened unexpectedly, obstructing my visibility and causing the vehicle to leave the roadway and enter a ditch. State Police responded, and the vehicle was towed immediately. This incident presents a serious safety defect. The is vehicle is certified by Mercedes Benz and purchased from Mercedes Benz Dealer.

While the vehicle was stationary and connected to a DC Fast Charging station (Electrify America), a thermal event occurred at the charging interface. The charging connector overheated and thermally fused (welded) to the vehicle's high-voltage charging inlet. The connector could not be released by the vehicle or the station. A technician dispatched by the charging network was unable to remove the connector using standard release protocols. The technician confirmed the equipment had failed and…

My panoramic sunroof shattered with no warning and no apparent impact. It exploded outward, while traveling at a high speed on the highway. It was late and there were no other vehicles on the road at the time. I was not near an overpass.

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…