2021 Mercedes-Benz AMG CLS53, 2021 Mercedes-Benz AMG E53, 2020–2021 Mercedes-Benz AMG G63 and 10 other models Recall: Side crash sensor connectors may come loose, which could delay the…
NHTSA campaign 21V527000 · Air Bags · filed Jul 12, 2021 · verified Jul 30, 2026
The defect
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.
The risk
Air bags and seatbelts that don't function as intended can increase the risk of injury during a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
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
Related recalls
More Mercedes-Benz AMG CLS53 recalls
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- 2021 Mercedes-Benz AMG CLS53 and 5 other models — 48-volt ground cable connection located in the engine…
- 2019–2021 Mercedes-Benz AMG CLS53 and 3 other models — 12-Volt battery in the trunk may not be properly secured…
- 2019–2021 Mercedes-Benz AMG CLS53 and 3 other models — Transmission wiring harness may be misrouted, which can…
- 2019–2021 Mercedes-Benz A 220 and 58 other models — Please refer to MBUSA's recall report for specific vehicle…
Other campaigns involving Mercedes-Benz vehicles
- 2026 Mercedes-Benz AMG GLE53 4MATIC+ and 13 other models — Bolts for the rear seat belts may not be tightened properly
- 2026 Mercedes-Benz CLA 250+ (ev) and 1 other model — Front passenger seat belt retractor may have been…
- 2025–2026 Mercedes-Benz AMG C43 4MATIC and 34 other models — Infotainment control unit may reset while the vehicle is in…
All Mercedes-Benz AMG CLS53 recalls → · All Mercedes-Benz recalls →
Source: NHTSA recall database, campaign 21V527000 (manufacturer number 2021070032/33). Data last verified Jul 30, 2026.