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:
Drive Axle, Disassembling and Assembling
Drive Axle, Disassembling and Assembling, Outer CV Joint
Special tools and workshop equipment required
Locking ring pliers, commercially available
Sealant -D454 300 A2-. Refer to the Parts Catalog.
Caution
This procedure contains mandatory replaceable parts.
Refer to component overview
General information
Applies to: vehicles with Audi connect
Depending on the country and the vehicle equipment,
the following functions may be available:
Audi connect Infotainment
Audi connect vehicle control
WARNING
To reduce the risk of an accident, only use
Audi connect services and the Wi-Fi hotspot
only if
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