BMW i4 2024–2025 — service campaign
Bulletin B640925 · NHTSA communication 11036383 · issued Aug 12, 2026
Service campaign
communication type
Electrical System
component
2024–2025
model years
6
vehicle entries
Official summary
A faulty electric auxiliary heater may have been installed in the certain vehicles. This could result in thefailure of the electric auxiliary heater, utilized for the vehicle interior.
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.