2022 Mercedes-Benz EQS 450 driver assistance problems

Filed Oct 22, 2026 · Driver assistance, Electrical · CA · crash

My 2022 Mercedes-Benz EQS 450+ repeatedly showed "Active Brake Assist Functions Limited," "Active Emergency Stop Assist Inoperative," and Blind Spot Assist warnings, photographed by September 23, 2026. On September 24, I reported these issues and showed photos to an authorized dealer. Electronic repairs were performed, but warnings returned. The repair record lists Blind Spot Assist as "not verified"; I have no record of an Active Brake Assist test. On October 8, while turning left across oncoming traffic, the car was in a collision. Automatic emergency braking did not activate. I know the distinctive sudden braking sensation from previous experience. I cannot determine whether activation was expected in these circumstances. Police attended, and the insurer declared a total loss. The car is at Copart; preservation for inspection has been requested but not confirmed. Please investigate a possible safety-system defect.

Filed Apr 3, 2025 · Airbags, Brakes · 100,000 miles · FL · crash · 1 injury

The contact owned a 2022 Mercedes Benz EQS 450. The contact stated that while driving approximately 15 MPH and approaching a parked vehicle on the side of the road, the contact depressed the brake pedal; however, the vehicle failed to stop. There was no warning light illuminated. Due to the brake failure, the front passenger’s side bumper crashed into the rear driver’s side bumper of the parked vehicle. The contact stated that the vehicle continued to maintain the same speed while depressing the brake pedal. The contact stated that after passing the first vehicle, his vehicle independently took a right turn and continued driving onto the sidewalk and onto the driveway of a home before crashing into the vehicle parked in the driveway which pushed the other vehicle into the garage door. The parked vehicle that was pushed into the garage door then struck the vehicle that was parked inside the garage. The contact stated that the brake pedal was being depressed throughout the failure; however, the vehicle only came to a stop after crashing into the parked vehicle in the driveway. The contact stated that the air bags had not deployed during the crash. The contact was taken to the hospital by ambulance and was treated for back pain, neck pain, and shoulders. A Police report was filed. The vehicle was initially towed by the Police Department and then to an undisclosed location before the contact and the Insurance Company had the vehicle towed to Millenium Auto Body which was an authorized Mercedes-Benz repair facility. The vehicle was deemed a total loss. The dealer and the manufacturer were notified of the failure and a case was filed with the manufacturer. The contact stated that a total of three vehicles and the garage door were damaged due to the brake failure. The contact stated that prior to the crash, the contact stated that the vehicle would intermittently stop abruptly. The contact stated that the forward sensor would perceive that there was an object in the road and activate the Forward Collision Avoidance syst

Filed Dec 17, 2024 · Brakes, Driver assistance · FL

Was driving 20 mph on a two lane road and my brakes came on for 1-2 seconds, it was sudden and jarred me forward

Filed Aug 20, 2024 · Driver assistance · TX

My wife has experienced six emergency braking events where there was no other car around. Three of the events have occurred at the exact same place. First event: backing slowly out of a parking space and the car suddenly stopped with no traffic in the area Second event: Backing out of a parking space (no other cars in the parking lot) and the car suddenly stopped Third event: Going forward in the Interstate at about 60MPH when the car suddenly stopped Fourth through Sixth events: Going forward on a city street between 30-40MPH when the car suddenly stops at the same exact place (different times of day). Three different dealers have been dealt with. Each one says that they cannot recreate the issue but that it should be cleared up with the next software update. Yet, it continues to happen. Manufacturer has been notified but has not asked/offered to inspect the vehicle or the area where the issue can be recreated (however, we have recently notified the manufacturer - we relied on the dealerships in the past year). Police nor insurance representative have inspected (nor been asked to in all fairness). Each time, either immediately before or contemporaneous with the braking has been a loud audible beep. Safety of the general driving public is at risk, not just the driver and occupants of the vehicle, because a sudden emergency braking incident with no hazard present is dangerous and can create the exact issue that the system should be preventing: a collision. The date of the incident listed is the approximate date of the last incident. The first one was in the Spring of 2023. The vehicle was purchased used in January of 2023 with approx. 4k miles on it. It now has 16,640 miles on it.

Filed Jul 10, 2024 · Driver assistance · TX

The “Active Assist” features of the vehicle [Blind Spot Assist, Braking Assist, Distance Assist, Emergency Stop Assist and Lane Change Assist - was not able to check all of these above because of the selection limit] have repeatedly and randomly become inoperative while I was driving the car. I have expressed my safety concerns with the service department and management of the dealership that sold me the car. While they have returned the car to me with the malfunction temporarily cured, it has recurred on more than three occasions, sometimes “fixing” itself and other times requiring dealer intervention. The dealership cannot assure me that it is fully and finally “fixed” and I have no reason to believe that the issue will not recur as it has so many times in the past. The dealer also refused my request to say it cannot be fully and finally fixed, but their offer of $50,000 for this car (less than half of the total purchase price for a car with only approximately 14,500 miles) on a trade for a used 2022 model priced at $110,000 is some indication that they view my vehicle as flawed. I do not feel safe in the car and their offer requiring me to take a substantial haircut on this purchase is not acceptable, particularly since they cannot (or will not) confirm one way or the other whether the issues are fully and finally fixed.

Filed Jan 30, 2024 · Driver assistance · 11,500 miles · FL

The contact owns a 2022 Mercedes-Benz EQS450. The contact stated that while driving at an undisclosed speed, the Forward Collision Avoidance feature engaged several times, causing the vehicle to brake unintendedly. The contact stated that there were no vehicles or objects in front of the vehicle when the failure occurred. The contact stated there were no warning lights illuminated. The vehicle was taken to a local dealer, where it was diagnosed that a software update needed to be performed to fix the issue. The repair was pending. The contact stated that the vehicle had previously been repaired due to the same failure. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 11,500.

Filed Dec 22, 2023 · Brakes, Driver assistance · CA · crash · 1 injury

re-open it again with the Key Fob. Sometimes it takes a while for the car to unlock. I've been having issues charging the vehicle since Day 1 of purchased since the computer in the vehicle is not able to communicate from time to time with the Electrify America charging stations for plug and charge. I will need to call in to Electrify America charging stations so they can do an override to be able to charge the vehicle. I have to waste 2.5 hours every time I want to charge the vehicle which is usually 2-3 times a week. Another safety concern I have is that when driving around 45-50 mph and I am attempting to apply the brake softly to start slowing down due to heavy traffic, I have reported to the dealership that the brakes feel like it takes some time to brake and slips. I have to pump the brake 2 to 3 times so the brakes can start working right. The dealership stated that is possible that the ASB braking system might be working correctly but that they could not replicate the symptoms that I was describing. I have talked to Mercedes Benz USA and open up a claim and asked them to do a buyback of the the vehicle due to all of the safety issues concerns I have expressed. The Case Number I have open with right now is (Case #XXX) The case is being handled by Marry - Executive Referral Manager of Mercedes-Benz USA Customer Assistance Center. She can be reached at 800‑367‑6372. I also reported these concerns to NTHS of the state of California and I have an open case # XXX. I reported all of this issues to them on Thursday 12/7/2023 around 8:30am Pacific Time. NTHS confirmed that not only mercedes is experiencing this issues but other customers has reported this automatic phantom braking happening with other vehicles as well and is very unfortunate and extremely dangerous. I am concern with having to drive my vehicle in this conditions since an accident already occurred do to vehicle braking on its own and going reversed on its own while on drive. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATI

Filed Dec 7, 2023 · Brakes, Driver assistance · 23,000 miles · CA · crash

The contact owns a 2022 Mercedes-Benz EQS450V. The contact stated while driving approximately 35 MPH, and with no traffic around him, the vehicle inadvertently braked to a stop. The contact stated there was no other vehicle or pedestrian in front of his vehicle. The contact stated no warnings were illuminated. The contact stated he was able to continue with normal driving functions. The contact stated that the inadvertent braking failure occurred again when he was at a traffic light. The contact stated that as the light changed to green, he depressed the accelerator pedal the vehicle moved forward, and then stopped in the middle of the intersection. The contact stated that the vehicle behind him crashed into his rear bumper. The contact stated that he depressed the accelerator to move out of the intersection and the vehicle braked again and the shifter lever had independently shifted into reverse (R). The contact depressed the brake pedal and saw that the ABS, and a "brake malfunction" warning lights illuminated, also a symbol of a steering wheel with an "exclamation point" was observed. The contact stated that the damage to his rear bumper was only scratches and the other vehicle had minor scratches on the front bumper. The contact stated that both vehicles were drivable and the police were not called. Additionally, the contact stated that when he would depress the brake pedal the vehicle would not immediately begin to slow, the contact would have to pump the brake pedal to slow the vehicle. The contact drove the vehicle to a local dealer where the dealer reported that the inadvertent braking failure and other brake failure could not be duplicated. The vehicle had not been repaired. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 23,000.

Filed Oct 12, 2023 · Brakes, Driver assistance · FL

on several occasion typically at lower speeds under 40 mph the vehicle suddenly and without warning activates the emergency braking system to a stop and releases even though there is no perceived danger by the driver. It has happened on 5-7 times since buying the vehicle. It has happened on a two lane road as well as four lane divided road, in rain and in dry weather.

Filed Sep 6, 2023 · Driver assistance · WA

Automatic emergency brakes triggered twice on me even though there was no emergency or obstruction anywhere near me. One incident occurred as I was trying to drive onto a car ferry, the braking system triggered as I neared an expansion joint on a bridge. Second incident occurred as I was driving straight ahead. Car was coming opposite direction in their own lane. Auto emergency brakes triggered again. Ended up with a sore neck and headache from the second incident