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
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Mechatronic, Removing and Installing
Special tools and workshop equipment required
Used Oil Collection and Extraction Unit -SMN372500-
Assembly Tool -T40305-
Oil Sump Assembly Pin -T40199-
Electronic Torque Wrench 3-60Nm -VAS6583-
Cover -T40322-
Support -T40321-
Removing
Note
General repair instructions. Refer to
→
Keys
Key set
Fig. 26 Your vehicle key set
Vehicle key
You can unlock and lock your vehicle with the vehicle
key.
Mechanical key and release buttons for
the mechanical key
A mechanical key is integrated in the vehicle key.
To remove it, press the release button and remove
the mechanical key.
Usi
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