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:
Child safety lock
The child safety lock prevents the rear doors
from being opened from the inside and the rear
power windows from being operated.
Fig. 37 Drivers door: controls
Applies to: vehicles with manual child safety locks
Fig. 38 Rear door: manual child safety lock
Vehicles with button
Applies to: vehicles
Radio Installation Instructions
Retrofitting Radio Systems
General Information
Before installing radios and telephone systems (radio
systems), disconnect the negative terminal of the Battery -A-.
Refer to
→Electrical Equipment; Rep. Gr.27.
Use the applicable wiring diagrams. Refer to
→ Wiring diagrams, Troubleshoo
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