Mazda CX-30 2019–2021 — technical service bulletin
Bulletin SA-020-21 · NHTSA communication 10189871 · issued Mar 8, 2021
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
11
vehicle entries
Official summary
Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON, transmitter battery power consumption is restricted, thereby extending the transmitter battery life.
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.