A bit late to the angel eye party: 2001 M5

[JPolen01]

Found out on my way back from the car show that the air conditioning ain't working so great.

Going through records, it appears 1lb of freon was added in September of 2014, implying there was already a leak.  Obviously it's supposed to be a closed system, but is there any harm in chucking a can of freon from the parts store until I have time to take it to a shop?  I'm happily ignorant on a/c systems.

My coworker and I tried this on his truck the other day...an hour later I received a photo of a puddle under the truck when he was leaving work. Sounds like you may be in a better situation as his "AC" was no less than 85 degrees.