Dear Mazda drivers,

I have been driving a nice Mazda 3 SkyActiv-X 2.0 180 from 2020 for about 9 months now. About 3 months ago I heard an annoying resonant vibration/hum when the engine is running between 2700 and 2800 rpm. This is especially noticeable when the fan setting is set to the windshield/feet. This is clearly audible in the first part of the video (0-20 seconds). Halfway through the video, I place the fan on just my feet, and then the resonant vibration is no longer audible. Does anyone recognize this and know how to fix it? Any help is appreciated. Thank you.

Kind regards, Tim

 

This is not uncommon and could be the plastic cover parts that cover the wiper transmission? At least that is one place many never think to look.