Audi A4: Refrigerant Circuit
Audi A4 (B9) 2016-2026 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
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General information
There may be different media sources and connections
available depending on the vehicle
equipment. For example, you can play media files
using a connected USB drive or connect your mobile
devices to the Audi music interface and operate
them through the MMI.
Media and format restrictions: the MMI (in
Fluids in the A/C system
Refrigerant in the A/C system
The sticker in the motor compartment provides
information about the type and amount of refrigerant
used in the vehicle's A/C system. The sticker
is located in the front section of the motor
compartment or at the front or back of the hood.
Warning: the A/C system must on
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