Audi A4: Refrigerant Circuit General Information
Audi A4 (B9) 2016-2026 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:
Plenum Chamber Bulkhead, Removing and Installing
Removing
- Remove the engine cover. Refer to
→ Engine Mechanical; Rep. Gr.10; Engine Cover; Engine Cover,
Removing and Installing.
- For vehicles that have a pass-through for the coolant lines
through the plenum chamber bulkhead, drain the coolant. Refer to
→ Eng
Overview - Transmission
1 - Rear Final Drive
Only for AWD
Removing and installing. Refer to
→ Rear Final Drive; Rep. Gr.39; Final Drive; Final Drive, Removing and
Installing.
2 - Driveshaft
Only for AWD
Removing and installing. Refer to
→ Rear Final Drive; Rep. Gr
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