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.
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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:
Instrument Panel, Removing and Installing
Removing
- Move the steering wheel as far to the rear and down as possible.
Use the full steering column adjustment range for this.
- Move the front seats all the way back and tilt backrests 45º.
WARNING
Risk of injury due to involuntary deployment.
Pay attention to the safety p
Driver Side Instrument Panel Cover, Removing and Installing
Removing
- Remove the driver side instrument panel side cover. Refer to
→ Chapter "Instrument Panel Side Cover, Removing and Installing".
- Equipped on some models: Open the storage compartment cover
-1- and remove the screws
-arrows B-.
- Remove the screws -arrows A-.
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