The aux fan connector is located with the engine open tucked down by the bumper.
E39 aux fan resistor test.
Tools needed was a 1 4 ratchet.
A c is all original as was the cooling system until very recently.
The blower motor resistor plays an important part in the luxury provided by bmw as it is intricately related to the functioning of the ac system.
This fits your.
To test the fan itself you ll need a source of 12vdc i use a motorcycle battery.
Here are the details about it signs of its failure and ways you can fix the blower motor resistor.
Crimp a male spade onto each end of a length of 18 gauge or larger wire.
Bmw part 67 32 8 371 873 check fit below.
This is for a 2001 e39 540i with about 83 000 miles.
Disconnect the connector and make sure you have the fan side and not the vehicle side.
The motor and resistor packs are ok the resistors are mounted on the fan housing.
5 series 97 03 e39 610 5 series gt 2010 on f07 327 5 series sedan 04 10 e60 468.
Test fan motor remove the high speed relay.
However it is susceptible to failure which will affect the luxury of driving a bmw.
Make sure this fits by entering your model number.
Last week i lost the a c blower function i e the a c system comes on and the compressor kicks in but their is no forced air in the system.
Id your model and search fan resistor.
One other way to check this would be to bench test it by applying power and ground to the aux fan from the connector for the fan.
Click below for auxiliary cooling fans.