BMW M850I 2019 — technical service bulletin
Bulletin B340419 · NHTSA communication 10160337 · issued Apr 1, 2019
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2019
model years
3
vehicle entries
Official summary
IB BRAKE-BY-WIRE SYSTEM - PREFLIGHT CHECK. When starting a vehicle or driving off customers may complain of "no brake assist" or "hard brake pedal". Additionally some brake warning lights may illuminate in the instrument cluster (aka Kombi).
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.