Audi A4: Refrigerant Circuit General Information
Audi A4 (B9) 2016-2025 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit General Information
- Vehicles with a High Voltage System (Hybrid Vehicles)
- Refrigerant Circuit Components Allocation, High and Low Pressure Sides
- Refrigerant Circuit
- Connections for Quick-Release Coupling on Refrigerant Circuit
- Switches and Sensors on Refrigerant Circuit and Connections
- Refrigerant Circuit Pressures and Temperatures
- Pressure Gauge, Tests and Measurements
- Service and Recycling Units
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Vehicles with a High Voltage System (Hybrid Vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Death or serious
bodily injury by electric shock.
- Individuals with electronic/medical life- and health su
General Information
High pressure side are the condenser, receiver/dryer and
restrictor or expansion valve to separate the high and low
pressure liquid ends.
High pressure results from the restrictor or expansion valve
SEE MORE:
Rear Lid, Removing and Installing
Rear Lid, Removing and Installing, Sedan
To complete the procedure, a second technician is required to be at
the following position.
Removing
- Remove the rear lid lower trim panel. Refer to
→ Body Interior; Rep. Gr.70; Luggage Compartment Trim Panels;
Rear Lid Lower Trim
Rear Window, Removing and Installing
Undamaged Rear Window, Removing and Installing, Sedan
Special tools and workshop equipment
required
Cutting Tool for Bonded Windows -VAS6452-
Cutting Tool for Bonded Windows - Wire Reel -VAS6452/1-
Read the repair information. Refer to
→ Chapter "Repair Information"
Required tools and ma
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