BMW 330E 2016–2018 — technical service bulletin
Bulletin B120918 · NHTSA communication 10138376 · issued Apr 1, 2018
Technical service bulletin
communication type
Engine
component
2016–2018
model years
5
vehicle entries
Official summary
NOISE FROM ENGINE WHEN STARTING: Engine making a rattling/grinding noise near the 12 volt starter motor.
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.