The problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2016-2017 S63 AMG Coupe, S65 AMG Coupe, S550 Coupe 4Matic, S63 AMG 4Matic Convertible, and S550 Convertible vehicles manufactured June 29, 2015, to March 15, 2016. The seat belt extenders on the affected vehicles may not retract as intended and may potentially break the event of a crash.
The risk
In the event of a crash, if the seat belt extender does not retract and/or the extender breaks, the seat occupant may not be properly restrained, increasing their risk of injury.
The fix
MBUSA will notify owners, and dealers will update the control unit software, free of charge. The recall is expected to begin in mid-December 2016. Owners may contact MBUSA customer service at 1-800-367-6372.
Recall details
| NHTSA campaign | 16V-829 (16V829000) |
|---|---|
| Manufacturer number | 2016110006 |
| Manufacturer | Mercedes-Benz USA, LLC |
| Component | Seat belts |
| Report date | November 16, 2016 |
| Owners notified | December 16, 2016 |
| Vehicles affected | 672 |
| Initiated by | Manufacturer |
Vehicles covered
- 2016 Mercedes-Benz AMG S63
- 2017 Mercedes-Benz AMG S63
- 2016 Mercedes-Benz AMG S65
- 2016 Mercedes-Benz S550
- 2017 Mercedes-Benz S550
Plus 1 other model/year combinations not covered on this site.
Owner complaints about the seat belts
Frequently asked questions
Is the recall 16V-829 repair free?
Yes. Mercedes-Benz dealers will fix the problem at no cost: MBUSA will notify owners, and dealers will update the control unit software, free of charge. The recall is expected to begin in mid-December 2016. Owners may contact MBUSA customer service at 1-800-367-6372.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 672 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.