Faint HVAC Cassette Like Noise

MbrachlinMbrachlin Member Posts: 1
edited October 2021 in Mazda

Hi everyone,

I have a 2019 Mazda 3. The AC makes two noises – the first is a clicking from the air blend doors going crazy which has a TSB out with a software update to fix it which I’ve yet to have applied. The other noise which is faint is a “Chh Chh” type noise similar to how a cassette sounds.

I’ve attached a link to a video I recorded of the noise. Any help would be greatly appreciated, I plan on taking the car into the dealer next week but would like to get a little insight beforehand as to what this noise might be.


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