2015 MERCEDES-BENZ S550 Complaints

The contact owns a 2015 Mercedes-Benz S550. The contact stated that the rear driver's side seat belt was inoperable. The contact stated that the seat belt failed to retract as designed. The vehicle was taken to the dealer where it was diagnosed with a failed seat belt retractor. The contact was informed that the seat belt retractor needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and the contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 75,000.

The driver side reader door can be opened when the door is locked. The door can be inspected on request. The risk is that the door can be opened when the door is indicated as locked. There are no lights to the contrary. The car is inspected by Mercedes dealer at McFarland in Georgia. See Mercedes recall Campaign 2018010009, March 2018.

Rear passenger seat belt will not retract. Has done twice before and took weeks before retracting by itself.

There is an active recall on the 2015 Mercedes S550 for the Front Stationary Sunroof panel however my vehicle is not part of the recall due to the Vin#. Regardless the Front Stationary Sunroof Panel on my vehicle has failed and risks coming off while driving which could come into impact with another vehicle.

The windshield cracks and spreads rapidly without any evidential cause for a crack and yes it would be available for inspection upon request. This is the 5th replacement in 5 years - 2 in one year alone: 1st - At the time of purchase with only 16555 miles (MPI) RBM replaced the windshield. 2nd - 1/21/20 - 40410 miles (Just got home from a drive through car wash and noticed the crack). 3rd - 7/24/20 - 42150 miles. 4th - 8/26/22 - 62274 miles. 5th - 6/18/23 - 77172 miles. Safety was at risk due to nervousness as to what could ultimately happen affecting driving ability. The problem has reproduced itself 5 times. RBM has refused to take responsibility and consistently escalates replacement cost. No warnings or causes leading to cracks/breakage

I bought my S-class car at a Manhattan dealership with 4900 miles on it, I treated it like my baby I’m the only driver and all services and maintenance had been done at the dealership, and I started getting bad readings on the fuel, check engine is ON, fuel gauge reads Full then goes down to Empty The mechanics at the Manhattan dealership said it was short on the fuel tank and I need to have the whole new tank replaced, my understanding is this model, the S Class has been having this issue on many models and there was a soft recall on that matter and it can be fixed at the dealership, we do have a case number with the Dealership. case number 03656172

I am writing to report an incident that occurred on Oct 17 2023 involving my 2015 Mercedes Benz S550, where the front portion of the two-part sunroof spontaneously exploded while I was driving down the highway. On the aforementioned date, at approximately 5 pm, I was traveling down Beltway 8 In Houston in my Mercedes Benz S550 along with a pack of cars. Suddenly, without any warning signs or external impact, my vehicle experienced a violent shaking accompanied by an extremely loud popping sound, reminiscent of a gunshot. The intensity of the event startled me, and I quickly maneuvered my car to safety while other drivers also reacted to the sudden disturbance on the road. Once I pulled over and inspected the damage, I was horrified to discover that the front portion of the two-part sunroof had completely shattered, leaving a significant hole and glass fragments both inside and outside the vehicle. The explosion occurred on the Beltway, before the Kirby exit. Fortunately, I escaped any injury as the glass fragments were ejected upwards due to the force of the explosion. It is important to highlight the potential devastation that could have occurred had I kept the screen under the sunroof rolled in, as is my usual practice. Considering the size and force of the explosion, it is reasonable to imagine that if the glass had come pouring down onto my head and body, it could have caused severe injuries, including lacerations, contusions, and possibly even more serious harm. In light of this incident, I am deeply concerned about the safety implications for myself and other vehicle owners who may encounter similar issues with the sunroof in their Mercedes Benz S550 or other models. It is crucial that this matter be thoroughly investigated to determine the underlying cause and prevent any potential risks or harm to future drivers.

Driver rear seatbelt is fully extended and won’t retract. A quick google search shows that this is a common problem with this model.

The contact owns a 2015 Mercedes-Benz S550 equipped with Pirelli Tires, Tire Line: P Zero Nero, Tire Size: 275/35/R20, DOT Number: XNX0M2622716. The contact stated that while driving at 40 MPH, there was an abnormal vibration coming from the tires. The vehicle was taken to an independent mechanic for diagnostic testing, and it was confirmed that there was tread separated on the rear tires. The dealer was not contacted. The manufacturer was notified of the failure. The VIN was not available. The tire failure mileage was 10,000. The approximate vehicle failure mileage was 44,000.

The contact owns a 2009 Mercedes-Benz S550. The contact stated that while driving at an undisclosed speed with the air condition system activated, there was hot air blowing out of the vents. The contact stated that the hot air was blowing out of the vents and the floorboard was soiled with water. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the compressor and the motherboard needed to be replaced. The vehicle was repaired; however, the failure recurred. The vehicle was taken back to the independent mechanic. The vehicle was diagnosed with electrical wiring failure. The electrical wiring underneath the driver and passenger seats was burned. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline. The failure mileage was approximately 73,000. The VIN was unavailable