If you have it on defrost, it actually cycles the A/C, even though the heat is on, and running the A/C runs the auxiliary fan.
Quotes to live by:
guessing gets expensive
nothing is more expensive than a cheap BMW
buying a ratty example (of a BMW) is a parasitic relationship.(and you ain't the mosquito)
Ken Kanne, Silverhill, AL, E36 & New Member Intro Forum Mod/Bimmerfest Tow Truck
1995 318is "Bebe"; 1993 325is "Elvira"; 1985 635CSi "Katja"; 1984 633CSi "Sylvia"; 1987 325is "Odette"