BMW 330E 2016–2021 — technical service bulletin
Bulletin B611320 · NHTSA communication 10181229 · issued Sep 1, 2020
Technical service bulletin
communication type
Electrical System
component
2016–2021
model years
42
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. In some cases, the relay is stuck closed and a fault is set. In these circumstances: A crash shutdown of the DSS does not occur The power distribution box is supplied with power until the DSS is fully discharged.
Vehicles covered
- 2021 BMW 330E
- 2019 BMW 330I
- 2020 BMW 330I
- 2021 BMW 330I
- 2017 BMW 740E
- 2018 BMW 740E
- 2019 BMW 740E
- 2017 BMW 740I
- 2018 BMW 740I
- 2019 BMW 740I
- 2020 BMW 740I
- 2021 BMW 740I
- 2016 BMW 740LI
- 2017 BMW 740LI
- 2020 BMW 745E
- 2018 BMW 750I
- 2019 BMW 750I
- 2016 BMW 750LI
- 2017 BMW 750LI
- 2018 BMW 750LI
- 2019 BMW 750LI
- 2021 BMW 750LI
- 2018 BMW B7 Alpina
- 2019 BMW B7 Alpina
- 2020 BMW B7 Alpina
- 2021 BMW B7 Alpina
- 2020 BMW M340I
- 2021 BMW M340I
- 2017 BMW M760I
- 2018 BMW M760I
- 2019 BMW M760I
- 2020 BMW M760I
- 2021 BMW M760I
- 2021 BMW R 1250 GS Adventure
- 2019 BMW X5
- 2020 BMW X5
- 2021 BMW X5
- 2020 BMW X6
- 2021 BMW X6
- 2019 BMW X7
- 2020 BMW X7
- 2021 BMW X7
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.