Bmw models that do have an engine driven fan will also have an electric fan mounted in front of the radiator known as the auxiliary cooling fan.
Bmw e39 aux fan relay location.
If the fuse is blown replace it and see what happens.
Assignment of the fuses footwell.
Assignment of the relays block in the footwell it is located on the floor under the lining on the right side of the car.
Fuse box in passenger compartment bmw e39.
There is no engine driven mechanical fan.
For the bmw e39 1996 1997 1998 1999 2000 2001 2002 2003 model year.
The bentley repair manual shows the location on page ecl 20.
This is the electrical fuse and relay box under the plastic cover in the passenger side rear of the engine bay.
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If the fuse is not blown the most likely fault is the final stage unit or the fan motor.