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:
Refrigerant Circuit, Charging with Service Station
Note
The entire refrigerant charge can be added to either the
high or low pressure side. Refer to
→ Chapter "Refrigerant R134a Capacities, Refrigerant Oil and
Approved Refrigerant Oils".
The work procedure is always to be performed as described in
the operating instructions for
Noise Insulation
Overview - Noise Insulation
1 -
Quick Release
Without fastener
2 -
Plug/Rubber Grommet
Plug for vehicles without parking heater
Rubber grommet for parking heater exhaust pipe
3 -
Bolt
12 Nm
Quantity: 2
4 -
Rear Noise Insulation
Removing and install
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