A/C System, Starting After Charging Refrigerant Circuit

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Starting the A/C system after charging the refrigerant circuit must be performed under the following circumstances:

The A/C compressor was replaced and the refrigerant circuit was flushed.
Refrigerant circuit was flushed.
The electrical A/C compressor was replaced.

-- Make sure that a minimum of 50% of the required amount of refrigerant oil for the refrigerant circuit is in the A/C compressor.

-- All removed parts are reinstalled.

-- The refrigerant circuit is charged. Refer to A/C System, General Information or REFRIGERANT CIRCUIT, CHARGING .

-- Open all instrument panel vents and, if present, the vents in the center console.

-- Switch the ignition on.

-- Perform the basic setting for the A/C and heating electronics (A/C compressor intake routine) using the Vehicle Diagnostic Tester .

Procedure

-- Connect the Vehicle Diagnostic Tester .

-- Select the Diagnostic mode and start the diagnosis.

-- Select the Test plan tab.

-- Select the Select individual test button and select the following tree structure consecutively:

Diagnostic-capable systems
0008 - A/C/Heater Electronics
0008 - A/C/Heater Electronics Functions
0008 - Basic Setting

-- Let the A/C compressor run with the engine in idle for at least five minutes.