Hello,
this is my first post so please be gentle! When I switch my car off it seems fine but after a couple of minutes one of the cooling fans comes on and stays on until it has flattened the battery. I have tried to change the module but it still happens, does anyone have any ideas of what it may be and if it is a common fault on the A4? I have a 2002 A4 TDI se 130 and is a fantastic car until this happened

Thanks

Antony