6 complaints reported

2015 Mercedes-Benz S-Class Seat Belts

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
6
Crashes
0
Fires
0
Injuries
0

Complaint Timeline

Chronological view of owner reports

Apr 2025

The rear seatbelts do not retract to restrain the passenger. They also don't retract after the passenger has exited the vehicle.

Type: Vehicle, Vehicle: 2015 MERCEDES-BENZ S550, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jun 2025
May 2024

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.

Type: Vehicle, Vehicle: 2015 MERCEDES-BENZ S550, Manufacturer: Mercedes-Benz USA, LLC
Incident: Oct 2023
Apr 2024

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

Type: Vehicle, Vehicle: 2015 MERCEDES-BENZ S550, Manufacturer: Mercedes-Benz USA, LLC
Incident: Apr 2024
Oct 2023

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

Type: Vehicle, Vehicle: 2015 MERCEDES-BENZ S550, Manufacturer: Mercedes-Benz USA, LLC
Incident: Mar 2023
Jun 2020

MY WIFE INSTALLED A BABY CAR SEAT IN REAR PASSENGER SEAT. WHEN I UNBUCKLE TO CLEAN UP THE SEAT, SEAT BELTS WERE JAMMED AND LOCKED. I TOOK IT TO THE DEALER AND THEY QUOTED OVER 1200$ JUST FOR SEAT BELT REPLACEMENT.

Type: Vehicle, Vehicle: 2015 MERCEDES-BENZ S550, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jul 2020
Aug 2016

BOTH REAR SEAT BELTS DO NOT RETRACT. THIS IS THE SECOND TIME IN 10 MONTHS THAT THE SEAT BELTS WILL BE REPLACED BY MB IN THIS CAR. MB DEALERS STATES THAT IT IS A PROBLEM THAT IS KNOWN AND MB IS WORKING ON A FIX. IN THE MEANTIME THEY ARE REPLACING THE SEAT BELTS WITH A NEW PART, BUT THEY SAID IT MAY GO BAD AGAIN AND MB IS WORKING ON A PERMENANT FIX AND WE WILL BE NOTIFIED WHEN A NEW SEAT BELT IS DEVELOPED. I HAVE NOT SEEN ANY RECALL ON THIS, BUT THE DEALER HAS STATED THAT THEY HAVE REPLACED MANY BELTS MULTIPLE TIMES ON OTHER CARS.

Type: Vehicle, Vehicle: 2015 MERCEDES-BENZ S550 4MATIC, Manufacturer: Mercedes-Benz USA, LLC
Incident: Aug 2016

Trend Over Time

Complaints by year

Quick Summary

The 2015 Mercedes-Benz S-Class has 6 Seat Belts complaints on file. Review the timeline above for detailed owner experiences.