
If the air conditioning electric fan in the Tiguan is not working, possible causes include poor contact in the main control switch, damage to the fan motor coil, loosening of the set screw between the motor and the fan blade, or an open or short circuit in the fan capacitor. The details are as follows: Poor contact in the main control switch: Use a multimeter to measure the contact resistance of the main control switch. If the resistance is too high or zero, repair or replace the switch. Damage to the fan motor coil: Use a multimeter to measure the contact resistance of the main control switch. If the resistance is too high or zero, repair or replace the switch. Loosening of the set screw between the motor and the fan blade: Tighten the set screw. Open or short circuit in the fan capacitor: Inspect the capacitor and replace it with one of the same specifications.


