BMW 330I 2016–2019 — technical service bulletin
Bulletin B611319 · NHTSA communication 10168004 · issued Oct 1, 2019
Technical service bulletin
communication type
Electrical System
component
2016–2019
model years
12
vehicle entries
Official summary
SERVICE ACTION: CHECKING THE DUAL STORAGE SYSTEM AND REPLACE IF NECESSARY. In the event of an accident, the two-battery Dual Storage System (DSS) is disconnected from the electrical system via an internal relay.
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.