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
SEE MORE:
Window Regulator, Removing and Installing
Removing
- Remove the door window. Refer to
→ Chapter "Front Door Window, Removing and Installing".
- Release the retainers -1 and 3- on
the window regulator threaded pins -2-
using an 11 mm socket. To do so, slide the socket onto the
threaded pin.
- Unclip the window regul
Center Differential
Overview - Center Differential
1 - O-Ring
Replacing
Coat with transmission fluid
2 - Plug
For the hole for checking and filling
For the transmission fluid inside the transfer case
Tightening Specification.
3 - Center Differential Housing
Removing and instal
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