Mazda CX-30 2021–2023 — technical service bulletin
Bulletin SA-027-23b · NHTSA communication 10240495 · issued Jul 11, 2023
Technical service bulletin
communication type
Electrical System
component
2021–2023
model years
15
vehicle entries
Official summary
Some customers may experience the following: In-Vehicle Network Malfunction error message, Master Warning light ON, Connected Vehicle Reception Icon shows "X".
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.