It is powered by a 50 amp fuse has a constant ground and is signaled by the dme when to come on and how strong to blow.
Bmw e53 auxiliary fan relay.
You can use a basic multimeter to check for power and ground at the big wires.
Fuse box diagram location and assignment of electrical fuses and relays for bmw x5 e53.
It doesn t have a relay.
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The auxiliary fan for this vehicle is controlled by the ecm and does not use relays.
There is also a relay in the main power box under the passenger cabin air filter that supplies power to the fan.
Fuse box in passenger compartment bmw e53.
The fan has 4 different speeds.
Cooling fan not working.
The auxiliary or a c condenser fan in mounted to the front of the radiator.
A premium outside door handle carrier replacement for bmw e53 x5 2000 2006 front left driver side 4 0 out of 5 stars 316.
The auxiliary fan request comes from the ihka control module via the k bus.
When the relay on the fan itself fails a new fan is needed.
So i am thinking that maybe all that needs to be replaced is the auxiliary fan switch aka temperature sensor part 13 62 1 433 077 which controls the operation of the auxiliary fan.
A unlike the older bmw models most models up through 1999 the auxiliary cooling fan on the later models is not just controlled by a coolant temperature.
2000 2001 2002 2003 2004 2005 2006.
For the bmw e53 1999 2000 2001 2002 2003 2004 2005 2006 2007 model year.