Mazda CX-30 2019–2021 — technical service bulletin
Bulletin 09-027-22 · NHTSA communication 10218730 · issued Aug 3, 2022
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
5
vehicle entries
Official summary
When replacing the body control module (BCM), some ECUs may need reprogramming. Without reprogramming the concerned ECUs, the power saving function may not work properly.
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.