2001 X5 blower fan cycles on/off

[wmubrown]

I have searched the forums and I do not believe this problem is addressed. The blower fan works fine, so its not the final stage resistor. What happens is, sometimes when I turn the vehicle off, the blower fan will cycle on and off constantly and never stops, leading to a dead battery. It doesn't always do it and turning the car back on, running a minute or so, and turning it off doesn't help. The odd thing is - it doesn't always do it, so troubleshooting this is going to be a pain. Any ideas? TIA.

John

[X5driver214]

I had the exact problem. My fan would work but when I turned the car off it would still come back on. It would turn off for a second and come back on. My battery also died. I had to jump the car every morning. I replaced the Final Stage Resistor and it started to work perfectly. Why do you think its not the final stage resistor, Have you replaced it before?

[vinuneuro]

Yah, this sounds like FSR.

[wmubrown]

Thanks for the reply. No, I have not replaced the final stage resistor. The posts I've seen regarding the FSR all seemed to state the fan was either non-functional, or running full blast when the vehicle was on, which didn't fit the symptoms I described. Sounds like you had exactly what I describe so I'll try a new FSR and see what happens! Thanks!

[wmubrown]

I meant to post results back here sooner. I finally dug out the manual (gaaakk!) and located the fuse for the blower fan (50 amp) and pulled it out. The X5 sat for two weeks while I was out of town and when I returned - it fired right up! I ordered the FSR, cost around $75 delivered, and within an hour had swapped it out and the X5 hasn't had a dead battery since. Thanks for those who pointed this problem out!!!!