Battery Change! Electrical problems!!!
 

Last week i had a flat battery in my 1998 A6 SE. I replaced the battery and now the fan keeps working even when it is switched off. Also the lights in the displays keep flashing. Also i can change the temperature of the heaters, but the fan is constantly on full power.

Has anyone had this problem? I think there must be some easy way of resetting them, but i don't know how. I have searched this forum but i can't find anything like this.

RE: Battery Change! Electrical problems!!!
 

Its the fan control module. Or it can be faulty wiring to the fan control module which there is a TSB at audi for installing an overlay harness. Neither one you wanna do yourself, you gonna have to bite the bullet and take it to the dealer here.

RE: Battery Change! Electrical problems!!!
 

Really? Is it just a coincidence that this happened when i changed the battery then?

RE: Battery Change! Electrical problems!!!
 

More than likely, even if you hooked the battery up backwards and smoked the ecm or something it still wouldn't affect the fan control module.