BMW 428I 2014–2018 — technical service bulletin
Bulletin B513316 · NHTSA communication 10164006 · issued Jul 1, 2019
Technical service bulletin
communication type
Seats
component
2014–2018
model years
14
vehicle entries
Official summary
LOSHING NOISES/WATER IN REAR PASSENGER COMPARTMENT: This Service Information bulletin replaces SI B51 33 16 dated August 2016.
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.