BMW X1 2016–2018 — technical service bulletin
Bulletin B512317 · NHTSA communication 10138396 · issued Apr 1, 2018
Technical service bulletin
communication type
Structure
component
2016–2018
model years
4
vehicle entries
Official summary
HUMMING NOISE DURING SMOOTH ACCELERATION: A humming, vibration noise is heard during smooth acceleration to 2000 rpm.
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.