When i turn my audi a3 3.2 off, sometimes when car is off and keys are in my hand the fan stil runs. This normally runs for 5-15mins. This is fine. However, today i turned my car off and the fan has been running for an hour!!! and it is still running! Why is this happening. Also, when i open my bonnet, at the front of the car there seems to be two fans. One on the left was spinning and the one on the right wasnt. Then i turned to car on and the one on the left continued running, but the one on the right still wasnt spinning. I dont know if this is normal for the right one not to be on, but the fact that the car is off and the fan is goin on for nearly 2 hours now is worrying!!! What can i do? Grateful for any help!