BMW 330I 2018–2020 — warranty extension
Bulletin B011824 · NHTSA communication 11012111 · issued Dec 31, 2024
Warranty extension
communication type
Electrical System
component
2018–2020
model years
11
vehicle entries
Official summary
The Telematics Control Units (TCU) Internal Emergency (Backup) Battery for defects in materials and/or workmanship has been extended to 6 years without mileage limitation, as determined from the vehicles original first in-service / delivery date.
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.