Thank you for the replies. I finally had a chance to get the refrigerant and the gauge and had two questions:

1.) I started the car and set the AC to max - opened the hood - and noticed the compressor clutch spinning but the aux fan wouldn't turn on. I left the car running with Max AC for a good 3-4 minutes and the aux fan never spun. Does the aux fan only turn on if the outside temp is hot? (It was 75 degrees outside and car engine was cold as well).

2.) I got the gauge as a separate part and the refrigerant can separate. And the gauge had instructions to check pressure before screwing in the can and only screw in the can if the pressure is low. So I did exactly that and as soon as I clicked in the gauge the needle jumps to 100 psi (As per chart it's supposed to be 35-45). I then unhooked the gauge and needle was stuck at 100. So I pressed the trigger without the can screwed in and noticed a puff of air/gas and the needle reset to 0. I tried it again and the needle again jumped to 100. So do I have a bad gauge?

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06 X5 3.0i