Audi A4: Refrigerant Circuit
Audi A4 (B9) 2016-2025 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit
- A/C System Repair Information
- Using Service Station
- Refrigerant Circuit, Flushing with Compressed Air and Nitrogen
- Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a
- Refrigerant Circuit, Determining Leaks
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A/C System Repair Information
Air conditioning systems designed for refrigerant R12 are
only to be filled with refrigerant R134a if certain requirements
are fulfilled. Refer to
→ Chapter "Refrigerant Circuit, Convertin
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
SEE MORE:
General Safety Precautions
As per VBG 20, German industrial liability insurance
association.
Pay attention to the workshop-specific instructions. It
should be kept in the workshop.
Product Characteristics
Refrigerants used in motor vehicle air conditioning systems
belong to the new generation of refrigerants based on
Fan Shroud, Removing and Installing
Removing
- Remove the front noise insulation. Refer to
→ Body Exterior; Rep. Gr.66; Noise Insulation; Overview - Noise
Insulation.
- Remove the charge air cooler. Refer to
→ Chapter "Charge Air Cooler, Removing and Installing".
WARNING
There is a risk of
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