BMW 330I 2024 — service campaign
Bulletin B120525 · NHTSA communication 11018723 · issued May 24, 2025
Service campaign
communication type
Electrical System
component
2024
model years
3
vehicle entries
Official summary
Moisture may enter the start generator supply line and cause corrosion inside the line.
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.