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 critical part that helps your automatic transmission shift gears smoothly. In some 2023 BMW models, the cover of this unit might not have been sealed 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, leading to sudden loss of power and control. This could make it hard to steer and brake, increasing the risk of a crash.
Free Fix
Your BMW dealer will replace the transmission control unit and refill the transmission fluid at no cost to you. You should schedule this 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 →