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Mercedes-Benz C 300 Recall 17V251: Front seatbelts may not tighten in a crash

NHTSA campaign 17V251, reported April 11, 2017, 12,743 vehicles potentially affected.

What this recall means for you

Certain 2017 Mercedes-Benz vehicles have front seat seatbelt pretensioners that may not work properly. A pretensioner is the device that quickly tightens the belt in a crash to hold the front occupants in place. The affected vehicles also fail to meet federal safety standards for occupant crash protection and seat belt assemblies.

If the pretensioners do not function as designed, front seat occupants may not be adequately restrained during a crash, which increases the risk of injury.

Mercedes-Benz USA will notify owners, and authorized dealers will replace the front seat belts at no cost. The recall began October 13, 2017. You can contact Mercedes-Benz USA customer service at 1-800-367-6372, and you should check your vehicle's VIN for any open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 17V251Mercedes-Benz USA, LLC.
Component
SEAT BELTS:PRETENSIONER
Problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017 C300, C300 4Matic, C300 Coupe, C300 Coupe 4Matic, C43 AMG, C43 AMG Coupe, C43 AMG Cabrio, C63 AMG, C63 AMG Coupe, C63S AMG, C63S AMG Coupe, C63S Cabrio, GLC300, GLC300 4Matic, GLC43 AMG, S550, S550 4Matic, S550e, S600, S63 AMG 4Matic, S65, Mercedes-Maybach S550 4Matic, and Mercedes-Maybach S600 vehicles. The affected vehicles have front seat seatbelt pretensioners that may not function properly in the event of a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection," and 209, "Seat Belt Assemblies."
Risk
If the front seat seatbelt pretensioners do not function properly, the seat occupants may not be adequately restrained in the event of a crash, increasing the risk of injury.
Remedy
MBUSA will notify owners, and dealers will replace the front seat belts, free of charge. The recall began October 13, 2017. 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.safercar.gov.

Affected vehicles

Mercedes-Benz AMG C432017
Mercedes-Benz AMG C632017
Mercedes-Benz AMG C63S2017
Mercedes-Benz AMG GLC432017
Mercedes-Benz AMG S632017
Mercedes-Benz AMG S652017
Mercedes-Benz C 3002017
Mercedes-Benz GLC 3002017
Mercedes-Benz S5502017
Mercedes-Benz S550 4MATIC2017
Mercedes-Benz S6002017
Mercedes-Maybach S5502017
Mercedes-Maybach S6002017