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Mercedes-Benz GLC 300 Recall 21V527: Loose Side Sensor Connectors Can Delay Airbags in a Crash

NHTSA campaign 21V527, reported July 12, 2021, 542 vehicles potentially affected.

What this recall means for you

Side crash sensor connectors in certain vehicles may come loose. If that happens, the side airbags and seatbelts may not deploy as intended during a side impact crash.

Airbags and seatbelts that do not work as designed increase the risk of injury in a crash. Owners should be aware of this issue and have their vehicle inspected.

Authorized dealers will inspect the side impact crash sensors and replace them as needed, at no cost to the owner. Owner notification letters were mailed September 3, 2021. You can also contact Mercedes-Benz USA customer service at 1-800-367-6372 (recall numbers 2021070032/33), and check your 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 21V527Mercedes-Benz USA, LLC
Component
AIR BAGS:SENSOR:SIDE IMPACT
Problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 CLS450, AMG E53, AMG CLS53, E350, E450, AMG GT43, AMG GT53, 2020 S450, S560, G550, AMG GLC63, 2020-2021 GLC300, and AMG G63 vehicles. The side crash sensor connectors may come loose, which could delay the activation of air bags and seatbelts during a side impact crash.
Risk
Air bags and seatbelts that don't function as intended can increase the risk of injury during a crash.
Remedy
Dealers will inspect and replace as necessary, the side impact crash sensors, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021070032/33.
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.

Affected vehicles

Mercedes-Benz AMG CLS532021
Mercedes-Benz AMG E532021
Mercedes-Benz AMG G6320202021
Mercedes-Benz AMG GLC632020
Mercedes-Benz AMG GT432021
Mercedes-Benz AMG GT532021
Mercedes-Benz CLS 4502021
Mercedes-Benz E 3502021
Mercedes-Benz E 4502021
Mercedes-Benz G 5502020
Mercedes-Benz GLC 30020202021
Mercedes-Benz S 4502020
Mercedes-Benz S 5602020