BMW X3 2018–2021 — technical service bulletin
Bulletin B520221 · NHTSA communication 10206683 · issued Dec 1, 2021
Technical service bulletin
communication type
Seats
component
2018–2021
model years
16
vehicle entries
Official summary
Milky-white stains (discolorations) in the leather are observed in the second-row seat bottom, backrests and/or headrests.
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.