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
READ NEXT:
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:
Antenna Wires, Repairing
Aerial Cable Repair Set VAS6720
Special tools and workshop equipment required
Aerial Cable Repair Set -VAS6720-
The Aerial Cable Repair Set -VAS6720- makes it possible to
perform a quality repair on antenna wires RG 174 (blue) and RTK
031 (black). The set contains the insulation removal tools a
Tire pressure monitoring
system
General notes
Each tire, including the spare (if provided),
should be checked monthly when cold and inflated
to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or
tire inflation pressure label. (If your vehicle has
tires of a different size than the size indica
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