Audi A4: Refrigerant Circuit
Audi A4 (B9) 2016-2025 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:
Door, Removing and Installing
Removing
- Disconnect the door cut-off connector -1-
at the B-pillar. Refer to
→ Electrical Equipment; Rep. Gr.97; Connectors.
- Tape off the B-pillar in the door arrester area using adhesive
tape, so that the paint will not be damaged.
- Remove the door arrester b
Seat Heating Element, Removing and Installing
Removing
- Separate the cover and cushion. Refer to
→ Chapter "Cover and Cushion, Separating, Bench Seat".
- Disconnect the wire -3- directly
from the old heating element -1-.
Note
The old heating elements remain on the cushion and will be
covered over by the new heating
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