Component
ENGINE
Manufacturer
BMW of North America, LLC
What Happened
The engine control system in your vehicle is like the brain that tells the engine when to start and how to run. In certain 2020-2021 models, this system may not work properly during engine start, causing a loss of braking assist.
Risk if Unfixed
If this happens, you'll lose the extra help that assists with braking, but you'll still have full mechanical braking available. However, this could increase the risk of a crash, especially in emergency situations.
Free Fix
Your BMW dealer will update the engine control software for free, so you don't have to pay a thing. You should schedule the update as soon as you get the recall notice, and you can contact BMW customer service at 1-800-525-7417 if you have any questions.
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 →