2003 Audi A4 Quattro Q&A

2003 Audi A4 Quattro Question: A/C not working

my air works somtimes when the car idles but once you start driving it gets warm and works best on auto when it works but blows high and low do i need freon and it says use green freon whats that -
This question hasn't been answered yet.
Answer It or share it on , or Email to get an answer.
Related Items:
The a/c simply quit working. Have had it tested for coolant leaks, nothing. The A/C compressor is working properly. My mechanic has hooked up computer and ran diagnostics and all the messages com...
The blower works with direct voltage, the control panal display is intermitant. and now my head lites dont work but with direct voltage they do.
unfortunately no one has answered my question and i really like to know where is the low presure port to charge the freon in my 1996 a4 quattro 2.8 please if any of you can help please i will aprec...