Ok I have read 100 forums and this iswhere I am. My ac was working ok but it wasn't super cold but it only blows hot air now. So far I have tried swapping relays, adding coolant, fuses, did the diagnostics on the display no codes, I dont have a vagcom to pullncodes that way. I tried bypassing the high pressure switch behind the headlight and when I do that the fan speeds up really fast but I cant tell if the clutch is engaging. Also when I bypass that switch the air doesnt get cold. And i can hear the blend door opening and closing when changing the temps. Is there anything else I can do before takingn it to the dealer?

Btw 2001 a4 1.8t I need this thing fixed seeing temps getting into the 90s and my front windows will not roll down!