Mazda CX-30 2022–2023 — technical service bulletin
Bulletin 01-005-25 · NHTSA communication 11022616 · issued Aug 11, 2025
Technical service bulletin
communication type
Engine
component
2022–2023
model years
4
vehicle entries
Official summary
Some customers may complain of an engine restart failure after i-stop activation, following a stop after low-speed driving (below 20 km/h). Engine restart is possible with key operation. This problem occurs when an IR request happens during an extremely short period (a few milliseconds) while transitioning to i-stop control, such as when the brake is released. In this case, the engine may fail to restart due to improper i-stop control. This concern has been eliminated through a PCM control software modification.
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.