If the fuse is blown replace it and see what happens.
Bmw e46 cooling fan relay location.
This is the electrical fuse and relay box under the plastic cover in the passenger side rear of the engine bay.
Almost all modern vehicles rely upon electric cooling fans to pull air through the vehicle radiator to keep the engine cool.
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.
Various relays in the bmw e46 the first set of relays is located behind the glovebox.
For the bmw 3 e46 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 model year.
This relay location requires that the glovebox be removed for access.
For cars from 1999 model year without headlight washers.
Bmw e46 electric fan fix and troubleshooting testing fan signal on dme https youtu be rdibbrn3 30.