2021 MERCEDES-BENZ GLS450 Complaints

We accepted delivery of our brand new vehicle in May 2021 from the dealer. In July 2021, the vehicle became completely disabled due to failure of the 48 volt battery. In October 2021, the dealer replaced 48 volt battery failed again causing the vehicle to become completely disabled. In December 2023, our 3rd replacement 48 volt battery failed. Each time the vehicle is out of service for a week or longer. The dealer is not providing any information about what may be causing the failures. Vehicle has become completely unreliable and dangerous. Mercedes Benz USA has offered us a 200 service credit and 3,000 off a new vehicle and advised they are not aware of any defects.

The contact owns a 2021 Mercedes-Benz GLS450. The contact received notification of 23V445000 (Fuel System, Gasoline) however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time to for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool showed no open recall.

Wipers - I have had repeated issues with the windshield wipers on this vehicle. I have taken it to the dealership 3 times and I have not gotten a satisfactory solution to the issue. The wipers skip across the windshield making intermittent wipers distracting. The dealer's service manager said this is a known issue caused by the OEM wiper blades. I've also been told they can't recommend a solution. AC - The AC in my 2021 GLS 450 smells like moldy socks which makes me suspect there is some build up on the coils or in the vent. I had the vehicle serviced 2 times at the dealership for this issue where the tech informed me the issue was not likely to be resolved by the $500 service I had paid for. The service was discounted down to $307.

The contact owns a 2021 Mercedes-Benz GLS450. The contact stated while driving 40 MPH, the vehicle in front made a sudden stop, causing the contact to make a sudden stop, causing the contact’s children to fall out the seats. The contact notice that the third-row buckle latch had malfunctioned. The vehicle was taken to the dealer and the third-row driver’s side latch was replaced. On another occasion while driving 40 MPH, the contact heard squeaking noise coming from the rear of the vehicle. The vehicle was taken to the dealer for diagnostic test, and the mechanic stated that no failure was found. The manufacturer was contacted, and a case was filed. The failure mileage was 25,000.

My Mercedes has the automatic doors that close. I was closing the driver door with my back to the door and felt my thumb get caught in the drivers door. I attempted to remove it but, could not remove it. I had to watch the door slowly close and seal/crush with my finger smashed within the door. My wife helped me open the door and the top of my finger was smashed, as my wife said, like [XXX]. I went to the emergency room in St Petersburg Florida and as diagnosed with an acute non-displaced fracture through the distal phalanx of the first digit. The door just slowly closed on the finger. if it was a child's hand. wow INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Mercedes has launch a Campaign Nr 2022010001 Campaign Desc: 21P0699002 in which will retrofit augmented reality camera in 1147 vehicle model year 2021-2022 . My car came without this camera due to the chip shortage during the COVID . I contacted Mercedes Benc USA and the rep told me to contact NHTSA in order to add my car as a part of this Campaign in order to repair this safety future on my car. This camera affect Lane keeping assistance and Lane Departure warning.

On four occasions my car has stalled while in traffic very early in my ownership and then it happened again today with my family in the car and nearly caused an accident. The entire dash lights up with every warning when it happens. Sometimes the check engine light comes on after I shut the car off and restart it. My Mercedes dealer has had it in multiple times for this reason. The last time it was in for this (May of 2022) they "reprogrammed" the entire car. It happening again today has really made me lose a lot of faith in the vehicle, especially since we purchased it for the safety factors. I read online that there are many others who have experienced this. Some say it is related to the 48V battery. I don't care what Make or Model or how expensive it is, a new car should NOT stall in traffic and should be looked into. Thank You.

Repeated failures of 48 volt battery system has shut vehicle totally off while under highspeed and in traffic

Incident 1: May 2022 Vehicle was sitting in driveway overnight and would not start in the morning. Had a 48V battery warning on. Towed to dealership. Said it was a delay software update. Incident 2: August 2022 Was driving 35mpg down the road where a warning sign comes up. Then shortly after the car slows down to around 15mph and would not speed up anymore. Towed to dealership. Dealership did not find anything "wrong" with vehicle Incident 3: November 2022 Car was parked in parking lot for 2 hours. When trying to start car, there was an error message saying stop vehicle. Towed to dealership. Dealership stating they might exchange a new 48V battery.

Car turned on by itself, then 2 days later would not start. 48v battery system needed software update