I have a 2003 1.8 T Sport. Yesterday I returned to my car to find the battery flat. After getting a jump start and travelling home I parked up my vehicle in the drive. About 15 mins later I heard the radiator fan working however it failed to stop and would only do so if the ignition key was turned in the ignition or if the fuse was removed. It seems this is what drained my battery! The car is not running hot and is otherwise fine. It was a very wet day yesterday when this occured but dry today. Anyone had this problem or got any ideas as to what it might be?