BMW 330I 2018–2020 — technical service bulletin
Bulletin B511318 · NHTSA communication 10172494 · issued Feb 1, 2020
Technical service bulletin
communication type
Visibility
component
2018–2020
model years
8
vehicle entries
Official summary
LIN BUS FAULTS WITH EXTERIOR REARVIEW MIRROR GLASS DAMAGE: This Service Information Bulletin (Revision 2) replaces SI B51 13 18 dated February 2020. The exterior rearview mirror glass is discolored or cracked. The power windows and folding mirrors may not operate.
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.