BMW 330E 2017–2024 — technical service bulletin
Bulletin B120721 · NHTSA communication 10252038 · issued Mar 4, 2024
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2024
model years
60
vehicle entries
Official summary
Check Control message (CCM) indicates: (ID 213): Stop, exercising due care. Voltage supply The Service Engine Soon light is on with the following DME Fault Code: 21B209 - Starter alternator / belt for 48V system (OSA_RIEMEN_RISS): Belt betweenCombustion engine and starter generator torn And/or one or more of the following other issues are also occurring: Noise in the area of the belt drive. Odor from the engine compartment. Smoke formation in the area of the belt drive. Drive belt damaged or prematurely worn. Torn drive belt.
Vehicles covered
- 2020 BMW 330E
- 2021 BMW 330E
- 2022 BMW 330E
- 2023 BMW 330E
- 2024 BMW 330E
- 2019 BMW 330I
- 2020 BMW 330I
- 2021 BMW 330I
- 2022 BMW 330I
- 2023 BMW 330I
- 2024 BMW 330I
- 2019 BMW 340I
- 2020 BMW 340I
- 2023 BMW 340I
- 2023 BMW 3 Series
- 2020 BMW 430I
- 2021 BMW 430I
- 2022 BMW 430I
- 2023 BMW 430I
- 2024 BMW 430I
- 2020 BMW 440I
- 2023 BMW 4 Series
- 2017 BMW 530E
- 2018 BMW 530E
- 2019 BMW 530E
- 2020 BMW 530E
- 2021 BMW 530E
- 2022 BMW 530E
- 2023 BMW 530E
- 2017 BMW 530I
- 2018 BMW 530I
- 2019 BMW 530I
- 2020 BMW 530I
- 2021 BMW 530I
- 2022 BMW 530I
- 2023 BMW 530I
- 2017 BMW 535I
- 2018 BMW 540D
- 2019 BMW 540D
- 2020 BMW 540D
- 2022 BMW 540D
- 2023 BMW 540D
- 2017 BMW 540I
- 2018 BMW 540I
- 2019 BMW 540I
- 2020 BMW 540I
- 2021 BMW 540I
- 2022 BMW 540I
- 2023 BMW 540I
- 2020 BMW 550E
- 2021 BMW 550E
- 2017 BMW 550I
- 2023 BMW 5 Series
- 2017 BMW 5-Series Gran Turismo
- 2017 BMW 640I
- 2018 BMW 640I
- 2019 BMW 640I
- 2020 BMW 640I
- 2019 BMW X5
- 2020 BMW X5
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.