BMW i4 2022–2024 — technical service bulletin
Bulletin B641125 · NHTSA communication 11025684 · issued Nov 11, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2022–2024
model years
3
vehicle entries
Official summary
Insufficient cooling power in the passenger area. The following faults may be stored: 0380CA - Malfunction or electrical fault of the heat pump circuit expansion valve detected E70C51 - Heat pump circuit changeover valve is not responding E70C44 - Heat pump circuit expansion valve is not responding
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.