Audi A4: Refrigerant Circuit
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit
- A/C System Repair Information
- Using Service Station
- Refrigerant Circuit, Flushing with Compressed Air and Nitrogen
- Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a
- Refrigerant Circuit, Determining Leaks
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A/C System Repair Information
Air conditioning systems designed for refrigerant R12 are
only to be filled with refrigerant R134a if certain requirements
are fulfilled. Refer to
→ Chapter "Refrigerant Circuit, Convertin
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
SEE MORE:
Windshield Antenna Suppression Filter -C18-, Removing and Installing
Windshield Antenna Suppression Filter -C18-, Removing and Installing,
Sedan
The Windshield Antenna Suppression Filter -C18- is located
behind the left D-pillar trim panel at the center of the
D-pillar.
Removing
- Turn off the ignition and all electrical equipment and
remove the ignition key
Instrument Panel Side Cover, Removing and Installing
Special tools and workshop equipment required
Trim Removal Wedge -3409-
Removing
- Pry off the cover -1- for the
instrument panel side cover using the -3409- in the direction of
-arrow-.
- Release the remaining retainers, pull the instrument panel cover
out of the A-pillar gap cover a
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