Which fuse is that? Here's some posts about Fuse 44:
... the radio/wipers go dead... radio and the wipers share #44... fuse 44 had blown again...
... to the dealer this morning. They found the short in the switch on the steering wheel column for the wipers!!!
http://www.bimmerfest.com/forums/showpost.php?p=1128880&postcount=7