Bmw E53 Auxiliary Fan Relay

The fan has 4 different speeds. When the relay on the fan itself fails a new fan is needed. Fuse box diagram location and assignment of electrical fuses and relays for bmw x5 e53.

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Cooling fan not working.

Bmw e53 auxiliary fan relay.

Fuse box in passenger compartment bmw e53. For the bmw e53 1999 2000 2001 2002 2003 2004 2005 2006 2007 model year. The auxiliary or a c condenser fan in mounted to the front of the radiator. 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.

The auxiliary fan for this vehicle is controlled by the ecm and does not use relays. You can use a basic multimeter to check for power and ground at the big wires. The relay is built into the fan where the wiring is plugged into the 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.

There is also a relay in the main power box under the passenger cabin air filter that supplies power to the fan. It doesn t have a relay. 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 fan speed request is based on the refrigerant pressure sensor input to the ihka.

Topaz 11527505302 radiator cooling fan clutch for bmw e46 e39 e38 x5 e53 4 2 out of 5 stars 113. 2000 2001 2002 2003 2004 2005 2006. The auxiliary fan request comes from the ihka control module via the k bus. 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.

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