My 2008 Avalon A/C fan speed periodically won’t run at the highest speed. When I take it off of “auto”, I can step up the fan speed and see the segments on the display light up with each increase in speed. Each segment lights up (they are in a oval shape) indicating that it should be at the highest speed, but it just doesn’t seem to blow as hard as it used to.
I think this fan motor is controlled by a PWM controller rather than resistors. Doesn’t anyone know if that is correct and where I could find the PWM controller? My thought was that if it was not too expensive I would change that out first.
If the fan works, could there be a problem with the fan motor?