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:
Bulkhead
Overview - Bulkhead
1 -
Lock Washer
2 -
Heat Shield
Overview. Refer to
→ Chapter "Overview - Heat Shield".
3 -
Pass-Through
For coolant lines
Can be replaced only with the heat shield
Equipped on some models
4 -
Seal
For the plenum chamber bu
Special Tools
Special tools and workshop equipment required
Seal Installer - Final Drive/Gearbox -T10337-
Puller - Crankshaft/Power Steering Seal -T20143/1-
Seal Installer - Flange Shaft -T40163-
Seal Installer - Output Shaft -T40239-
Circlip Pliers -VAS5503A-
Used Oil Collection and Extraction Unit -SM
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