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:
Windshield wipers
Switching the windshield wipers on
Fig. 51 Lever: windshield wipers
Fig. 52 Lever: rear window wiper (allroad)
Move the lever to the
corresponding position:
(0) Windshield wipers off
(1) Rain sensor/intermittent mode. The windshield
wipers switch on once the vehicle speed
exceeds approximately 2
Ribbed Belt Pulley without Freewheel, Removing and Installing
Special tools and workshop equipment required
Generator Belt Socket -3310-
Inner hex socket 8 mm or TORX
T50
Removing
- Remove the generator if necessary. Refer to
→ Electrical Equipment; Rep. Gr.27; Generator; Generator,
Removing and Installing.
- For some engine ty
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