2020 Mercedes-Benz GLB 250 Recall: In the event of a crash, the air bag control unit software may not…
NHTSA campaign 21V639000 · Air Bags · filed Aug 13, 2021 · verified Jul 30, 2026
The defect
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2020 GLB250 vehicles. In the event of a crash, the air bag control unit software may not activate the front seat belts and front passenger air bag properly.
The risk
Air bags and seat belts that do not function properly can increase the risk of injury in 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 update the air bag control unit software, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact MBUSA customer service at 1-800-367-6372.
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
| Make | Model | Model years |
|---|---|---|
| Mercedes-Benz | GLB 250 | 2020 |
Related recalls
More Mercedes-Benz GLB 250 recalls
- 2025 Mercedes-Benz AMG GLB35 and 1 other model — Right-side front and rear tires may have sidewall damage…
- 2019–2020 Mercedes-Benz A 220 and 6 other models — Vehicles may not be equipped with an inspection gauge to…
- 2021 Mercedes-Benz GLB 250 — Electronic Stability Program (ESP) unit may be damaged…
- 2019–2021 Mercedes-Benz A 220 and 58 other models — Please refer to MBUSA's recall report for specific vehicle…
- 2021 Mercedes-Benz GLB 250 — Level sensor linkage on the rear axle might not have been…
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 GLB 250 recalls → · All Mercedes-Benz recalls →
Source: NHTSA recall database, campaign 21V639000 (manufacturer number 2021080019). Data last verified Jul 30, 2026.