Service bulletins for the 2021 Mazda CX-3
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
278 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Heating and air conditioning are shown. Show all
| SA-012-23 | 2023-04-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; VISIBILITY. Some customers may report an odor or water in the HVAC system and upon inspection, the cabin air filter may be found to be wet. |
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| SA-074-22 | 2022-12-02. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM. Some customers may complain the HVAC system not maintaining the correct temperature or the ambient (outside) temperature reading incorrectly. This is caused by a failure in the ambient temperature sensor. To correct this issue, the ambient temperature sensor has been modified. |
| 07-005-21-3836 | 2021-10-31. Service bulletin. EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:CONDENSOR/EVAPORATOR. Some customers may complain about warm air from the climate control vents. This may be caused by improper brazing (A) of the evaporator (B), causing a refrigerant leak from the joint between the tubes (C) and the header (D). To eliminate this concern, the configuration of the brazing set up has been improved. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.