NHTSA recall campaign
21V598000
ManufacturerBMW of North America, LLCReported2021-08-02Affected50,024 vehicles
What was wrong
Defect
BMW of North America, LLC (BMW) is recalling certain 2020 M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, 2020-2021 X4 M40i, 745Le xDrive, 2019-2021 Z4 M40i, and 2020-2021 Toyota Supra vehicles. During engine start, the engine management software may cause loss of braking assist. Full mechanical braking (without assist) remains available.
Risk
Loss of braking assist can increase the risk of a crash.
Manufacturer remedy
Dealers will update the engine management software, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact BMW customer service at 1-800-525-7417.
To check whether your specific VIN is covered and to find a participating dealer, look this campaign up on NHTSA.gov →