Audi Q3: Technical Data

Refrigerant R134a Capacities

Refrigerant R134a and refrigerant oil. Refer to → Refrigerant R134a Servicing; Rep. Gr.87; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils. (Refrigerant R134a, Servicing; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils).

- Discharge, evacuate and fill the refrigerant circuit. Refer to → Refrigerant R134a, Servicing; Rep. Gr.87; Refrigerant Circuit (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

- Operate the A/C system after filling the refrigerant circuit. Refer to → Chapter "A/C System, Starting Operation after Filling Refrigerant Circuit".

  Note

• Depending on the production date of the vehicle and the engine, the compressor type and the condenser version may vary. Refer to the Parts Catalog.
• The refrigerant and refrigerant oil capacities depend on the A/C compressor type and condenser version. Refer to → Refrigerant R134a, Servicing; Rep. Gr.87; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils (Refrigerant R134a, Servicing; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils).
• Always fill refrigerant circuit as far as upper tolerance limit (some refrigerant remains in filler hoses).
• For additional information, refer to → Chapter "Type Label" and → Refrigerant R134a, Servicing; Rep. Gr.87; Refrigerant Circuit (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

Refrigerant Oil

The special refrigerant oil (for use with refrigerant circuits R134a only) is not commercially available. Refer to the Parts Catalog.

Refrigerant R134a and refrigerant oil. Refer to → Refrigerant R134a, Servicing; Rep. Gr.87; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils. (Refrigerant R134a, Servicing; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils).

- Discharge, evacuate and fill the refrigerant circuit. Refer to → Refrigerant R134a, Servicing; Rep. Gr.87; Refrigerant Circuit (Refrigerant R134a, Servicing; Refrigerant Circuit, Using Service Station).

- Operate the Air Conditioning (A/C) system after filling the refrigerant circuit. Refer to → Chapter "A/C System, Starting Operation after Filling Refrigerant Circuit".

  Caution

Malfunctions due to filling the A/C system with the wrong refrigerant oil.

Only fill the refrigerant circuit with approved refrigerant oils. Refer to the Parts Catalog. The correct refrigerant oil depends on the manufacturer and the type of A/C compressor installed. Refer to → Refrigerant R134a, Servicing; Rep. Gr.87; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils (Refrigerant R134a, Servicing; Refrigerant R134a Capacities, Refrigerant Oil and Approved Refrigerant Oils).

Malfunctions due to improper filling of the A/C system with refrigerant oil.

• Too much refrigerant oil in the refrigerant circuit increases the pressures and reduces the cooling output of the system.
• Too little refrigerant oil in the refrigerant circuit can lead to the A/C compressor failure due to lubrication problems.

Danger of corrosion in the refrigerant circuit.

Refrigerant oil absorbs moisture. Do not use refrigerant oil from containers that have been left open for a lengthy period of time. Refer to → Refrigerant R134a, Servicing; Rep. Gr.87; A/C System, General Information (Refrigerant R134a, Servicing; A/C System, General Information).

Important information:

Refrigerant oil attracts moisture. Close any opened containers immediately after use to prevent moisture from entering.

Oil Distribution

• When the Air Conditioning (A/C) system is being used, the refrigerant oil that was in the A/C compressor before switching on the A/C system for the first time is distributed throughout the entire refrigerant circuit.
• Depending on the previous operating condition of the A/C system before switching off and the ambient temperatures, the distribution of the refrigerant oil in the refrigerant circuit varies. A general statement about the refrigerant oil distribution in the refrigerant circuit is therefore not possible. Therefore, observe the notes for replacing the refrigerant circuit components. Refer to → Refrigerant R134a Servicing; Rep. Gr.87; Refrigerant Circuit Components, Replacing (Refrigerant R134a, Servicing; Refrigerant Circuit Components, Replacing).

Special Tools

Special tools and workshop equipment required

• Ultrasound A/C Cleaner -VAS6189B-
• Vehicle Diagnostic Tester

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