Audi A4: Refrigerant Circuit Components, Replacing
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit Components, Replacing
- General Information
- Leaking or Damaged Components except A/C Compressor, Reservoir or Receiver/Dryer
- Compressor, Replacing without the Need for Flushing Refrigerant Circuit
- Compressor, Replacing on Account of Leakage or Internal Damage
- Receiver/Dryer or Accumulator and Restrictor, Replacing after Cleaning Refrigerant Circuit
- A/C Compressor Regulator Valve -N280-, Removing and Installing
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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
Leaking or Damaged Components except A/C Compressor, Reservoir or
Receiver/Dryer
The refrigerant circuit was completely empty (for example
with larger leak or cracked hose)
Note
In the event of only a minor leak with slow escape of
refrigerant (e.g. at a small leakage
Compressor, Replacing without the Need for Flushing Refrigerant Circuit
Note
Cleaning the refrigerant circuit means flushing with
refrigerant R134a. Refer to
→ Chapter "Refrigerant Circuit, Cleaning (Flushing), with
Refrigerant R134a".
If a faulty A/C
SEE MORE:
Mechatronic, Removing and Installing
Special tools and workshop equipment required
Used Oil Collection and Extraction Unit -SMN372500-
Assembly Tool -T40305-
Oil Sump Assembly Pin -T40199-
Electronic Torque Wrench 3-60Nm -VAS6583-
Cover -T40322-
Support -T40321-
Removing
Note
General repair instructions. Refer to
→
Front Axle Camber, Centering
Note
Camber cannot be adjusted.
Camber can be centered evenly within specified tolerance
range by shifting subframe.
Procedure
- Remove the noise insulation. Refer to
→ Body Exterior; Rep. Gr.66; Noise Insulation; Noise Insulation,
Removing and Installing.
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