Sorry to revive this thread once again, but I was hoping I can get some help on diagnosing my AC problem. I have a similar problem to what most X5 drivers have, cold air for the driver and warm air in the center and right vents.

I know my FSR is bad because I can recall many times in the past where my aux fan will stay on after I turn the car off. So I ordered a new FSR (OEM BMW) last night and will plan to change it for the first time in this car. But now I realize that my aux fan never goes on anymore (within the past two or three days). So my question is, is there any chance a new FSR can get the fan to run again? It seems as the fan is dead rather than running erratically.

I also checked the r134a pressure on the low pressure port and it was about 45 psi which is high, I assume its because the aux fan was off which caused the pressure to rise. I have been keeping my AC off now since its over 100 F and I don't want to create more problems.

Weasel, hopefully you can chime in on this if you have any suggestions. Any other help will be greatly appreciated. I will post again after I get my new FSR.

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2005 BMW X5 3.0i
2013 BMW M3 Competition