Audi A6 Owners & Service Manuals
Audi A6 Typ 4G (2011–2018) Workshop Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit / A/C System Repair Information

Audi A6 Typ 4G: 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, Converting R12 to R134a and Servicing" and Repair manual: Air Conditioner with R12 Parts 2 and 3. This repair manual is only available in hard copy.
  • The refrigerant oils specifically developed for R134a and R12 refrigerant circuits are never to be mixed.
  • Service stations which come in contact with the refrigerant are only to be used for the intended refrigerant.
  • Components of R134a refrigerant circuits can be identified by their markings, green labels or design (such as different threads) to prevent interchanging with components designed for refrigerant R12.
  • A label indicating the refrigerant used is provided in the engine compartment on the lock carrier or in the plenum chamber.
  • Different refrigerants are never to be mixed.

  Note

When working on the refrigerant circuit, always heed the information given in the sections on "Safety measures". Refer to → Chapter "A/C System and Refrigerant R134a Safety Precautions" and "Basic rules for working on refrigerant circuit" → Chapter "Refrigerant Circuit, General Precautions".

Refrigerant Circuit, Converting R12 to R134a

CFC refrigerants are no longer used in the automotive industry.

Converting refrigerant circuits from R12 refrigerant to R134a refrigerant and servicing converted circuits

Refer to Repair Manual: Air Conditioner with Refrigerant R12 Parts 2 and 3 (This repair manual is only available in printed form).

    READ NEXT:

     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 elec

     Refrigerant Circuit, Discharging with Service Station

    Work procedure may vary depending on the type of tools selected (the tool-specific operating instructions should therefore be followed). The refrigerant circuit is to be discharged if parts of th

     Refrigerant Circuit, Flushing with Compressed Air and Nitrogen

    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 elec

    SEE MORE:

     Center Differential

    Overview - Center Differential Housing Overview - Center Differential Housing, Bolted Driveshaft The Center Differential Housing Can Also be Removed and Installed With The Transmission Installed. Refer to → Chapter "Center Differential Housing, Removing and Installing, Bolted Driveshaft".

     Window Guide, Removing and Installing

    1 - Window Guide Removing Remove the door trim panel and window frame trim panel. Refer to → Body Interior; Rep. Gr.70; Rear Door Trim Panels; Window Frame Trim Panel, Removing and Installing. Remove the C-pillar trim. Refer to → Chapter "Overview - Rear Doo

    © 2011-2025 Copyright www.aa6.tochrfr.com