Seats: mid/rear assembly: head restraint (Mercedes-Benz)
Vehicle recall 21V-406. NHTSA received Mercedes-Benz USA, LLC’s report on May 28, 2021.
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The short answer
NHTSA received Mercedes-Benz USA, LLC’s report on May 28, 2021. Copied from NHTSA on Oct 21, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
Incorrectly mounted headrests could move or detach from the seat during a crash, increasing the risk of injury.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 C300 Cabriolet, C43 AMG Cabriolet, C63 AMG Cabriolet, C63 AMG S Cabriolet, E450 Cabriolet, and E53 AMG Cabriolet vehicles.
The rear headrests may be incorrectly mounted to the seatbacks.
NHTSA, Recalls flat file. Released Oct 21, 2026. Updated daily.
- NHTSA’s part: Seats: mid/rear assembly: head restraint.
What should you do?
Dealers will inspect the rear seatback guide bushings and replace them if necessary, free of charge. Owner notification letters were mailed July 16, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA’s number for this recall is 2021060010.
NHTSA, Recalls flat file. Released Oct 21, 2026. Updated daily.
- How to reach the firm: 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.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 218 vehicles potentially involved, across everything this recall names.
Each model year opens its own page: every recall naming it, its owner complaints and its crash ratings.
NHTSA, Recalls flat file. Released Oct 21, 2026. Updated daily.
Who is recalling it?
- Made by Mercedes-Benz USA, LLC.
NHTSA, Recalls flat file. Released Oct 21, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt. Owners’ complaints are counted on each vehicle’s page.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).
Released Oct 21, 2026 and checked Oct 21, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 21, 2026.