General Information

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2016 Audi A4, 2015 Audi S4, and 2015 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Only valves and connections that are resistant to refrigerant R134a and refrigerant oil must be installed.
Different connections (outer diameter) for high pressure and low pressure side.
Discharge the refrigerant circuit before removing valves or valve inserts.
Always screw on sealing caps.

Allocation in the vehicle. Refer to OVERVIEW - REFRIGERANT CIRCUIT (vehicle-specific repair information).

WARNING:

There is a danger of ice-up.

Refrigerant will leak out if refrigerant circuit is not discharged.

Refrigerant must be extracted before opening refrigerant circuit. If refrigerant circuit is not opened within 10 minutes of extraction, pressure may form in refrigerant circuit due to evaporation. Extract the refrigerant once more.