BMW Z4, X3 +7 more: Power train — control module (tcm/pcm/tecm)

Affects BMW Z4, X3, 8 Series, 3 Series, X5, 5 Series, X4, X6, 4 Series · 2023 — about 552 vehicles.

The hazard

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.

What to do

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.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational