Unfortunately on the e46 the relays are not available separately from the fan so unless you re an electrical wizard you just replace the whole fan assembly to the tune of about 400.
Bmw e46 radiator fan relay location.
For cars from 1999 model year without headlight washers 1.
There was someone recently who found a supplier who carried the fan without the relay box so presumably one could find the relay box without the fan.
Various relays in the bmw e46.
This relay location requires that the glovebox be removed for access.
For the bmw 3 e46 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 model year.
The first set of relays is located behind the glovebox.
You want all of the parameters to be properly met so that everything.
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.