I did some research and found out that if you pull the plug off the pressure switch on the A/C line the aux fan should run. (Thanks rjs1222). Can anyone else confirm this as a way to test the aux fan? Also if I am getting cold air on the left side, does that mean my compressor is good? I really hope I do not have to change a compressor

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2005 BMW X5 3.0i
2013 BMW M3 Competition