Air bag/restraint control module: softwareRecall 21V-789 · Mercedes-Benz vehicles
Mercedes-Benz USA, LLC recall 21V-789 covers 1,311 Mercedes-Benz vehicles for a air bag/restraint control module: software problem, reported to NHTSA on October 11, 2021. The manufacturer's latest report (2023 Q3) shows 96% of affected vehicles repaired.
Source: NHTSA recall 21V789000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2021 S500, S580, and Maybach S580 vehicles. The air bag control unit software may deactivate the occupant recognition control unit, resulting in a deactivated front passenger air bag.
The risk
A deactivated passenger air bag increases the risk of injury during a crash.
The fix
Dealers will update the air bag control unit software, free of charge. Owner notification letters were mailed December 1, 2021. MBUSA's number for this recall is 2021100010. Owners may contact MBUSA customer service at 1-800-367-6372.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
96%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.