Hi guys,i have a 2002 a4 1.8t that is overheating and eventualy spilling coolan out of the overflow of the coolant reservoir.First i had coolant temp. sensor replaced becouse it was liking there and temp. gauge was behaving eraticly and now my radiator fans are not working.Any help is greatly appreciated

 

go to autozone and check ur codes

 

there is no displays or allarms of any sort and allso fans are working when the ac is on but will not turn on otherwise

 

have u checked ur fuse.

 

I can bet anything it is your fan control module (FCM). This part is located just above the fans in front of the alternator. It is a small metal box.