Service Station, Connecting On Vehicles With Connections On Low And High Pressure Side Of Refrigerant Circuit

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Audi SQ5, 2024 Audi Q5 e, 2024 Audi Q5, 2023 Audi SQ5, and 2023 Audi Q5 e. However, it is still accessible from the selected car via links, so may be relevant.

A/C Service Station, Connecting for Measuring and Testing

-- Switch off the ignition.

-- Connect the A/C service station to the power supply.

-- Connect the quick-release coupling adapter to the charging hoses of the A/C service station (hand wheels not screwed in/hand shut-off valve not open).

-- Switch on the A/C service station and evacuate the charging hoses (only necessary if there is air in charging hoses).

-- Switch on the A/C service station.

-- Remove the caps from the service connections (with valve).

-- Connect the service station via the service connections with the quick-release coupling adapters to the vehicle refrigerant circuit.

-- Screw in the handwheel of the quick-release coupling adapters only until the valves are definitely open at the refrigerant circuit connection (observe pressure gauge, do not strain valves).

Vehicles with High-Voltage System and A/C System Additional Functions (for Example on Audi Q7 e-tron):

NOTE:

For vehicles with the "heat pump" function and/or "high-voltage battery cooling", high pressure is not at the high pressure side service connection in every A/C system operating condition. Depending on the A/C system operating condition, the refrigerant circuit pressure on the high pressure side can only be measured via the pressure / temperature sensor installed in the refrigerant circuit on these vehicles. Refer to Refrigerant Circuit (vehicle-specific Service Information) and use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.

To check the different functions of these A/C systems

-- Select the respective function ("cooling the vehicle interior", "heat pump operation" or "cooling the high-voltage battery") using the Vehicle Diagnostic Tester and perform it according to the specifications using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.

-- Select and read out the measured values of the different pressure/temperature sensors installed in the refrigerant circuit. Use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.

All Vehicles

-- Perform the planned tests and measurements.