Mazda CX-3 2016–2019 — technical service bulletin
Bulletin 07-003-19-3608 · NHTSA communication 10165343 · issued Sep 10, 2019
Technical service bulletin
communication type
Equipment
component
2016–2019
model years
6
vehicle entries
Official summary
Some customers may complain about warm air from the climate control vents. This may be caused by improper brazing of the evaporator, causing a refrigerant leak from the joint between the tubes and the header.
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.