Audi A4 Owners & Service Manuals

Audi A4: Refrigerant Circuit

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

 Using Service Station

 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:

 Checking Pressures for Vehicles with Restrictor and Reservoir (with Internally Regulated Compressor)

General Information   Note Connect the A/C service station. Refer to → Chapter "A/C Service Station, Connecting". Observe the test requirements. Refer to → Chapter "Pressures, Checking". - With the ignition switched off, check the pressure in the refrigerant circuit (u

 Receiver/Dryer or Accumulator and Restrictor, Replacing after Cleaning Refrigerant Circuit

  Note Cleaning the refrigerant circuit means flushing it with refrigerant R134a. Refer to → Chapter "Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a" or blowing through with compressed air and nitrogen. Refer to → Chapter "Refrigerant Circuit, Flushing with

© 2019-2026 Copyright www.audia4b9.com