BMW 228I 2019–2021 — technical service bulletin
Bulletin B520720 · NHTSA communication 10182616 · issued Oct 1, 2020
Technical service bulletin
communication type
Seats
component
2019–2021
model years
31
vehicle entries
Official summary
SEAT HEATING NOT ACTIVATED WHEN ENGINE IS STARTED USING REMOTE STARTING SYSTEM: When preheating/precooling the vehicle via the remote starting system (Remote Engine Start), the seat heating on the driver's side is not activated.
Vehicles covered
- 2020 BMW 228I
- 2021 BMW 228I
- 2021 BMW 330E
- 2019 BMW 330I
- 2020 BMW 330I
- 2021 BMW 330I
- 2020 BMW 840I
- 2021 BMW 840I
- 2020 BMW M235I
- 2021 BMW M235I
- 2020 BMW M340I
- 2021 BMW M340I
- 2020 BMW M8
- 2021 BMW M8
- 2019 BMW M850I
- 2020 BMW M850I
- 2021 BMW M850I
- 2019 BMW M850XI
- 2020 BMW M8 Gran Coupe
- 2019 BMW X5
- 2020 BMW X5
- 2021 BMW X5
- 2020 BMW X6
- 2021 BMW X6
- 2020 BMW X6 M
- 2019 BMW X7
- 2020 BMW X7
- 2021 BMW X7
- 2019 BMW Z4
- 2020 BMW Z4
- 2021 BMW Z4
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.