Component
ENGINE
Manufacturer
BMW of North America, LLC
What Happened
The engine management software in your car is like the brain that controls how your engine runs. In some 2020-2021 models, this software might not work right during engine start-up.
Risk if Unfixed
If your car's braking assist fails, you might struggle to stop quickly or smoothly. This could make it harder to control your vehicle, increasing the risk of a crash.
Free Fix
Your BMW dealer will update the engine management software to fix the issue, and this repair is completely free. You should schedule the update as soon as you get the recall notice in the mail.
Show original NHTSA language
Original — What Happened
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.
Original — Risk if Unfixed
Loss of braking assist can increase the risk of a crash.
Original — 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.
View full recall details →
Repairs are free at any authorized dealer. Find a dealer →