Mazda CX-3 2016–2021 — technical service bulletin
Bulletin SA-015-21 · NHTSA communication 10188026 · issued Feb 2, 2021
Technical service bulletin
communication type
Visibility
component
2016–2021
model years
10
vehicle entries
Official summary
Some customers may complain that the Blind Spot Monitoring (BSM) system is inoperative. The symptoms may include: When the ignition is switched ON, the warning indicator light turns ON momentarily and then turns off after a few seconds. The BSM system does not operate after 1st key cycle (cold soak), No DTCs stored in memory, BSM system will function normally after 2nd key cycle and the vehicle is driven on the street
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.