Air bag control unit software malfunction
Defect Summary
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.
Safety Consequence
Air bags and seat belts that do not function properly can increase the risk of injury in a crash.
Corrective Action
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.
Similar Recalls
Other recalls from Mercedes-benz Usa, Llc or involving Air Bags.
FAQ: Recall 21V639000
Your rights, the repair process, and what each field on this page means.
What is recall 21V639000?
NHTSA recall 21V639000 was issued by Mercedes-benz Usa, Llc on August 13, 2021. It addresses: Air bag control unit software malfunction. The recall affects approximately 66 vehicles, with the defect involving the Air Bags component.
How do I get this recall repaired?
Contact any authorized Mercedes-benz Usa, Llc dealer and reference NHTSA recall ID 21V639000 or the manufacturer campaign number 2021080019. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.