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NHTSA campaign 21V483000 · Manufacturer campaign 2021080021

Mercedes Benz Recall 21V-483: Seat Belt Locking Retractor Malfunction/FMVSS 208

NHTSA recall 21V483000 (Manufacturer campaign 2021080021) was reported by Mercedes-Benz USA, LLC on June 25, 2021, with 4,917 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mercedes Benz AMG E63, Mercedes Benz CLS 450, Mercedes Benz AMG CLS53 and more for model years 2021–2022. Owners were notified on September 24, 2021, per NHTSA.

Updated daily from NHTSA's recall files

Is my vehicle included?

This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V483000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.

To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.

Mercedes Benz VIN check: decode a VIN to see its year, make and model.

Key facts

NHTSA campaign
21V483000 (also written 21V-483 or 21V483)
Filed by
Mercedes-Benz USA, LLC
Manufacturer campaign number
2021080021
Report received
Potentially affected
4,917 vehicles (per NHTSA)
Component
Seat Belts — Rear/Other — Retractor
Owners notified
Safety standard
FMVSS 208

Repair completion: 96.64% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)

NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.

Vehicles listed for this recall

NHTSA's recall record lists these vehicles for recall 21V483000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.

Mercedes Benz

  • Mercedes Benz AMG CLS53

  • Mercedes Benz AMG E53

  • Mercedes Benz AMG E63

  • Mercedes Benz AMG G63

  • Mercedes Benz AMG GT43

  • Mercedes Benz AMG GT53

  • Mercedes Benz AMG GT63

  • Mercedes Benz CLS 450

  • Mercedes Benz E 350

  • Mercedes Benz E 450

  • Mercedes Benz G 550

All Mercedes Benz recalls

NHTSA's recall notice

As NHTSA's recall record states it for campaign 21V483000.

Defect description

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 consequence

An unsecured child restraint system can increase the risk of injury during a crash.

Manufacturer 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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Sources

Official NHTSA notice for recall 21V483000

Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.