Blower Final Stage Fan Resistor May Fail on BMW 525i

The blower final stage fan resistor is known to fail. Symptoms are the heater fan speed varies regardless of the setting, the fan will not turn off when the car is switched off, or the fan will not switch on at all.

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Average mileage: 123,341 (70,000–222,000)
5 model years affected: 1994, 2001, 2002, 2003, more2007
23 people reported this problem
14 people shared problem details
2002 BMW 525i75,000
the fan sometimes on, sometimes off,and now it's dead not on at all. Is it the only possibility that blower final stage resistor need to be replaced? or there's other possibility like fan motor?
2003 BMW 525i101,779
I have a 2003 bmw 325 i the ac fan wont turn off after my car engine is off
2003 BMW 525i70,000
Final stage resister failure caused fan to continue to draw power after shutting off car. The battery would drain and the alarm would then trigger when set.
*I coun'nt figure out why cars battery kept on dying and fans blower would come on and not shut off when you needed it to until I replaced the blower final stage unit, all is back to normal, Thank God..........
blower motor stopped blowing
2002 BMW 525i128,000
air wouldn't flow so had it insepected and replaced this part.
2003 BMW 525i75,000
Blower output varies constantly and sometimes won't turn on. Had to replacew. $300!
2002 BMW 525i185,000
It randomly started. Would turn the car off, the blower would stay on and eventually run the battery down. I haven't had it fixed yet, but in the meantime every time I park I have to get into the trunk and unhook the battery cable so it doesn't run down the battery.
2002 BMW 525i222,000
When the car is turned off the floor vents blow hot air including my arm rest vent. I get no light on any of my ac buttons. I thought it would be fuse 9 or 20 but they look fine. I take 9 out and the blower stops of coarse. The only think I can think of is the big porcupine looking fuse on the passenger side under the vent on the floor. Is it an FSU problem?
2002 BMW 525i150,000
Buy the part from Rock Auto (<$40) and go on line and replace it. It takes less than 5 minutes. The repair location is under the passsenger side, unclip and remove and replace. Works like a charm, BMW wanted $200+ to replace.
2003 BMW 525i121,000
My blower motor stays on even after the car is turned off causing the battery to die out. I need to shut it off how do i do so?
2001 BMW 525i130,010
Not fixed yet, fan blows cold on face only when heater on, but will be hot at feet or defrost. Defrost will stay on or turn on after engine shut off.
2002 BMW 525i133,456
blows hot air under the dash while driving and the cluster that controls ac/heat doesnt work at all
2002 BMW 525i80,000
failed in 2008
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