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.
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SEE MORE:
Central locking
General information
WARNING
If you leave the vehicle, switch the ignition
off and take the key with you. This applies
particularly when children remain in the vehicle.
Otherwise, children could start the vehicle
or operate electrical equipment (such
as power windows), which increases the risk
Wiring Harnesses, Repairing
Note
Observe general notes for repairs on the vehicle electrical
system. Refer to
→ Chapter "Vehicle Electrical System, General Repair
Information".
Airbag and Belt Tensioner Wires, Repairing
In addition to the general repairs on wiring harnesses, the
following methods and instruc
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