BMW 330E 2019–2021 — technical service bulletin
Bulletin B610319 · NHTSA communication 10199299 · issued May 1, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
15
vehicle entries
Official summary
SERVICE ACTION: PROGRAM OR REPLACE DUAL STORAGE SYSTEM BATTERY: A software error intermittently causes a continuous resetting of the microcontroller in the power management system. This causes the red Check Control Message (CCM) "Replace Battery" to be illuminated.
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.