Mercedes-Benz USA (MBUSA) is recalling 672 model year 2016-2017 S63 AMG Coupes, S65 AMG Coupes, S550 Coupe 4Matics, S63 AMG 4Matic Convertibles, and S550 Convertibles manufactured June 29, 2015, to March 15, 2016.
The seat belt extenders may not retract as intended and could break 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 the risk of injury.
What to do
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.