I've tried doing several searchs on this topic, but I haven't been able to find a conclusive answer. I have 2003 X5 3.0i. My a/c is blowing warm air on every setting. I checked the auxiliary fan and it does not run when the a/c is on. According to the forums I've read, this is the source of the warm air. What's the solution? Replace the aux fan or replace the final stage resistor? Thanks