General Information

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2016 Audi S4, 2016 Audi A4 Quattro, 2015 Audi S4, 2015 Audi A4 Quattro, and 2014 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Connect the A/C service station. Refer to A/C SERVICE STATION, CONNECTING .

Observe the test requirements. Refer to PRESSURES, CHECKING .

-- With the ignition switched off, check the pressure in the refrigerant circuit (using the service station). Refer to REFRIGERANT CIRCUIT, CHECKING PRESSURE WITH SERVICE STATION .

The pressures with the ignition turned off meet the specifications.

-- Start the engine.

-- Bring the engine speed up to 2000 RPM.

-- Observe the pressure gauge of the service station.

NOTE:

The switch pressures for refrigerant circuit switches are vehicle-specific.

The connection with valve for low-pressure switch or at evaporator is only to be used for vehicles with no service connection on low-pressure side and inaccessible connection at compressor or accumulator (measurement accuracy). Only applies to specific vehicles. Refer to OVERVIEW - REFRIGERANT CIRCUIT (vehicle-specific repair information).