If the fuse is blown replace it and see what happens.
Bmw e46 cooling fan relay location.
For the bmw 3 e46 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 model year.
The bentley repair manual shows the location on page ecl 20.
These cooling fans rely upon electric motor and they typically have a moderate to high slow draw which means that they are commonly controlled with a relay that relay controls the fans for the engine.
Bmw e46 electric fan fix and troubleshooting testing fan signal on dme https youtu be rdibbrn3 30.
Almost all modern vehicles rely upon electric cooling fans to pull air through the vehicle radiator to keep the engine cool.
You want all of the parameters to be properly met so that everything.
For cars from 1999 model year without headlight washers.
If the fuse is not blown the most likely fault is the final stage unit or the fan motor.