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:
Transmission Fluid
Transmission Fluid Level, Checking
Special tools and workshop equipment required
Torx Socket - T60 -T40087-
Protective Eyewear
Procedure
Note
General repair instructions. Refer to
→ Chapter "Repair Information".
Guidelines for clean working conditions. Refer to
→ Chapte
Sunroof Seals, Removing and Installing
Sunroof Seals, Removing and Installing, Sedan
Removing
- Remove the glass panel. Refer to
→ Chapter "Glass Panel, Removing and Installing, Sedan".
- Remove the seal -2- from the glass
panel -3-.
1 -
Roof
Installing
- Starting in the center, press the new seal on
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