Mazda CX-30 2020–2021 — technical service bulletin
Bulletin SA-035-21 · NHTSA communication 10194770 · issued May 19, 2021
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
2
vehicle entries
Official summary
A customer may experience symptoms caused by a roof water leak. Some will be obvious, like water in the spare tire well, others might be electrical in nature or water in the rear differential. The source of the leak may be pinhole anywhere along the roof seams under the 2 trim strips (where the roof rails attach). Depending on the location of the leak, the headliner may or may not be visibly affected.
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.