Mazda CX-30 2019–2021 — technical service bulletin
Bulletin SA-038-21 · NHTSA communication 10194778 · issued May 24, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2019–2021
model years
5
vehicle entries
Official summary
When the body control module (BCM) has been replaced or reprogrammed and the software is updated to the file names shown below, DTC U2050:55-BCM (Activation of remote control not implemented) may be stored in memory without any warning indication for the driver.
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.