It start yesterday. The main froster fan stays on a full speed all the time once I start the car. I adjust the auto climate and modes. Still no luck. I turn off the auto climate and the fan still blows on high ( through defroster). Dealer says they have never heard of this. Figured someone on AZ would know. This is inside not the cooling fan for the motor.

 

Run the HVAC diagnostic and see if it gives you an error message: