BMW 745LE, X4 +4 more: Engine

Affects BMW 745LE, X4, X3, M340I, 540I, Z4 · 2019–2021 — about 50K vehicles.

The hazard

Loss of braking assist can increase the risk of a crash.

What to do

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.

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