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 like the brain of the automatic transmission. It's a small computer that helps the gears shift smoothly. In some 2023 BMW models, the cover of this unit might not be welded properly, allowing transmission oil to leak in.
Risk if Unfixed
If transmission oil gets into the control unit, it could cause the transmission gears to seize up, suddenly cutting off power to your vehicle. This could make it hard to control your car and increase the risk of a crash.
Free Fix
Your BMW dealer will replace the faulty transmission control unit and the transmission fluid, all at no cost to you. You should schedule the repair as soon as possible after receiving 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 →