Audi A4: Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a
Audi A4 (B9) 2016-2025 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit / Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a
- General Information
- Flushing Circuit Block Diagrams
- Electrically Driven A/C Compressor, Rinsing (Remove Refrigerant Oil)
- Adapter for Assembling Flushing Circuit
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General Information
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.
- I
Flushing Circuit Block Diagrams
Note
The arrows in the following illustrations show the direction
of refrigerant flow during flushing (refrigerant flows in
opposite direction of flow when Air Conditioning (A/C) system is
Electrically Driven A/C Compressor, Rinsing (Remove Refrigerant Oil)
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.
- I
SEE MORE:
Door B-Pillar Trim, Removing and Installing
B-Pillar Door Trim, Removing and Installing, Front
Removing
- Move the door window into the "open" position.
- Remove the window frame trim panel. Refer to
→ Body Interior; Rep. Gr.70; Front Door Trim Panels; Window
Frame Trim Panel, Removing and Installing.
- Remove
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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