NHTSA Campaign Number

21V639000

AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE:SOFTWARE

Reported to NHTSA: August 13, 2021

Key Takeaways

Recall 21V639000 currently maps to 1 tracked vehicle-year page across 1 make.
This page summarizes the official defect description, safety consequence, and remedy text published by NHTSA for this campaign.
This is a campaign-level lookup, not a VIN-level clearance result. Use a VIN lookup before assuming your specific vehicle is still open.

Useful Next Steps

Check a VIN for an open recall Read what to do after a recall notice Browse more air bags recalls Open an affected vehicle page

Defect Description

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.

Remedy

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.

What This Recall Page Shows

This page summarizes a single NHTSA recall campaign, including the defect description, safety consequence, and manufacturer's remedy. The affected vehicles listed below are the make/model/year combinations tracked in our database — this is not a VIN-specific result. To check whether your individual vehicle is covered by this recall, enter your 17-digit VIN at nhtsa.gov/recalls. Click any vehicle below to view its full safety profile.

VIN recall lookup guide What to do after a recall More air bags recalls

Affected Vehicles (1)

Year	Make	Model
2020	Mercedes-Benz	GLB-Class

Browse Affected Vehicles

Related Air Bags Campaigns

These campaigns share the same broad recall component family, so they are useful if you want to compare how similar issue types appeared across other vehicles and time periods.

26V325000AIR BAGSGeneral Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2019 Chevrolet Silverado 2500, Silverado 3500, GMC Sierra 2500, and Sierra 3500 vehicl…1 tracked vehicle pages · May 21, 2026 26V254000AIR BAGSHyundai Motor America (Hyundai) is recalling certain 2025 Elantra N, 2026 Tucson, Tucson Hybrid, Tucson Plug-In Hybrid Electric (PHEV), and Elantra vehicles. The B-pillar impact se…2 tracked vehicle pages · Apr 21, 2026 26V230000AIR BAGSNissan North America, Inc. (Nissan) is recalling certain 2009-2010 Cube vehicles. The driver’s air bag inflator may detach from the steering wheel during air bag deployment.2 tracked vehicle pages · Apr 10, 2026 26V227000AIR BAGSHonda (American Honda Motor Co.) is recalling certain 2018-2022 Odyssey vehicles. A software programming error can cause the side and side curtain air bags to deploy unexpectedly.5 tracked vehicle pages · Apr 9, 2026

This recall information is from NHTSA campaign 21V639000. This site is not affiliated with NHTSA. Contact your dealer or call NHTSA's Vehicle Safety Hotline at 1-888-327-4236 for more information.

Latest vehicle import recorded anywhere on this site: Oct 8, 2026. Individual vehicles and datasets may have older records; this is not this page's update date.