Auto Air Conditioning & Heater Repair: 1997 audi a8 ac, audi a8, blower motor

Question
When I turn the car off the fan still runs. Even when the ac is turned off.

Answer
Hi Tammy

Your final stage on this blower is bad.  Some dealers call it final stage others call them blower module and even resistors.   But the piece that controls your blower is bad, not the switch.  This final stage is located by the blower motor.