# Service bulletin 07\-001\-26

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.

- Type: Service bulletin
- NHTSA id: 11028094
- Published by NHTSA: 2026\-02\-03
- Manufacturer's number: 07\-001\-26
- Manufacturer's date: 2026\-01\-16
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: HVAC

## NHTSA's summary

Some customers may hear a repeating click sound when using the HVAC system \(Auto A/C equipped vehicles only\). The click sound may be caused by the air mix doors moving back and forth. This concern has been eliminated by a dash\-electrical supply unit control software modification.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028094-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028094-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Vehicles listed

- 2020 MAZDA CX\-30
- 2019 to 2020 MAZDA MAZDA3

JSON: [/v1/bulletins/11028094](/v1/bulletins/11028094)

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