AC in my 03 GTI isn't working...
 

My ac compressor turns on then off again and all that blows out the vent is warm air. I know that the freon level is fine because it was just filled. I don't think it's the compressor because it comes on. Could it be the clutch or the climate control panel that's the problem? Or perhaps a wiring issue since when I turn on the recirculating air the brake light on the dash turns on. If anyone has any clue what's going on the help would be much appreciated.

Jump out and check if when you turn the AC on if your compressor turns on or the Fans? If not. Check the PLUG that comes off the top of the battery you should be able to use a test light and should get 12v from all 3 or 4 pins (think it's 3). If you have power there, those wires run striaght to your relay which is under your battery

i just had to get my compressor fixed - what a pain! good luck with your gti!