Mazda CX-30 2019–2021 — technical service bulletin
Bulletin 15-001-21-3795 · NHTSA communication 10190958 · issued Apr 2, 2021
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2019–2021
model years
5
vehicle entries
Official summary
Some customers may notice an unexpected collision warning or automatic braking while reversing. This concern may be due to the parking assist unit software. The Smart Brake Support (SBS-R) system may be detecting an unintended obstruction at the lower rear end of the vehicle. To eliminate this concern, the parking assist unit control software has been modified.
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.