Component
POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
Manufacturer
BMW of North America, LLC
What Happened
The transmission control unit in your vehicle is a computer that helps your car's transmission work smoothly. In some 2023 BMW models, the weld seam on this unit's cover might not be secure, allowing transmission oil to leak into the control unit.
Risk if Unfixed
If transmission oil gets into the control unit, it can cause the transmission to seize, making it impossible to shift gears. This could happen suddenly while driving, leaving you without power and increasing the risk of a crash.
Free Fix
Your BMW dealer will replace the transmission control unit and change the transmission fluid, all at no cost to you. You should schedule the repair as soon as you receive the recall notice.
Show original NHTSA language
Original — What Happened
BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.
Original — Risk if Unfixed
Transmission oil that leaks into the control unit can lead to a seizure of the transmission gears, causing a sudden loss of drive power and increasing the risk of a crash.
Original — Remedy
Dealers will replace the transmission mechatronics module and the automatic transmission fluid, as necessary, free of charge. Owner notification letters were mailed January 26, 2024. 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 →