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
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Special Tools
Special tools and workshop equipment required
Used Oil Collection and Extraction Unit -SMN372500-
Tensioning Strap -T10038-
Seal Installer - Selector Shaft -T10135-
Engine/Gearbox Jack - Gearbox Support -T10337-
Torx Socket - T60 -T40087-
Clutch Module Assembly Aid -T40169-
Rear Seat Belt Guide, Removing and Installing
Seat Belt Guide in Rear Seat Backrest, Removing and Installing
Special tools and workshop equipment required
Trim Removal Wedge -3409-
Removing
- Remove the center rear belt end fitting. Refer to
→ Chapter "Rear Seat Belt Latch, Removing and Installing".
- Release the catches -1-
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