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Mercedes rear seat belts may not hold child seats

NHTSA campaign 21V483000 · Reported 2021-06-25 · Mercedes-Benz USA, LLC

medium How serious is it? About this label

An unsecured child restraint system can increase the risk of injury during a crash. The notice does not tell owners to stop driving.

What's wrong, in plain English

Rear seat belts have a mode that locks the belt tight so a child seat cannot move around. On these vehicles that lock can switch off too early. When it does, the child seat is not held firmly and can shift in a crash, leaving a child less protected. Mercedes dealers will inspect the rear seat belt assemblies and replace them if needed. Owners were sent a first letter in August 2021 and a final letter in September 2021.

What you should do

1. Enter your VIN at nhtsa.gov/recalls to confirm your vehicle is included.
2. Call a Mercedes-Benz dealer, or MBUSA at 1-800-367-6372, to schedule the inspection.
3. Have the rear seat belts checked and replaced if needed — the repair is free.

Affected vehicles (3)

Who to contact

Mercedes-Benz — official Mercedes-Benz recall lookup

Customer service: 1-800-367-6372

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Official notice

Component
SEAT BELTS:REAR/OTHER:RETRACTOR
Summary
Mercedes-Benz, LLC (MBUSA) is recalling certain 2021 G550, AMG G63, E350, E450, AMG CLS53, AMG E53, AMG GT43, AMG GT53, AMG GT63, 2021-2022 CLS450, and AMG E63 vehicles. The rear seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
Safety risk
An unsecured child restraint system can increase the risk of injury during a crash.
Remedy
Dealers will inspect, and replace as necessary, the rear seat belt assemblies, free of charge. Owners notified of the voluntary recall campaign by an interim letter on August 13, 2021. A final letter was mailed on September 24, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.