BMW i3 2014–2018 — technical service bulletin
Bulletin B340719 · NHTSA communication 10163038 · issued Jun 1, 2019
Technical service bulletin
communication type
Service Brakes
component
2014–2018
model years
5
vehicle entries
Official summary
CCM Brake system: Press pedal harder for usual braking power. Drive with caution to nearest authorized BMW Service workshop lights up. (Check Control message ID24) The fault usually only occurs at very low temperatures and in rainy regions. CAUSE Moisture in the connector of the electric vacuum pump.
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.