Where do you add refrigerant on a 97 Audi A-8 Quattro?

Answer 1

To add refrigerant to a 1997 Audi A8 Quattro, locate the low-pressure service port, which is typically found on the larger diameter aluminum line running from the compressor to the evaporator. The port is usually located near the front of the engine bay, near the passenger side. Once identified, remove the cap and connect your refrigerant canister using the appropriate adapter. Ensure the engine is running and the AC is set to the maximum setting while adding the refrigerant slowly.