Air Conditioning (Overview) -- (Sedan)

• 87 Air Conditioning
  • Component Location Overview - A/C System
    • Component Location Overview - Components Outside Of Vehicle Interior
      • Notes
      • After-Run Coolant Pump, Coolant Shut-Off Valve, Air Quality Sensor, Rear Window Defogger
        • Notes
        • Tightening Specification For The Nuts On The Fresh Air Intake
        • Tightening Specification For The Nuts On The Rain Water Drain Channel
      • Mechanically-Driven A/C Compressor, Condenser, Service Connections, Expansion Valve, Condensation Water Drain
      • Plenum Chamber Water Drain, Vehicle Interior Forced Air Extraction
      • Additional (And On The A3 E-Tron Installed Differently) Components On Vehicles With A High-Voltage System (A3 E-Tron).
    • Component Location Overview - Components In Front Vehicle Interior
      • Notes
      • Left Front Passenger Compartment
      • Vehicle Interior At Front Right
  • Refrigerant Circuit
    • System Overview - Refrigerant Circuit
      • System Overview - Refrigerant Circuit, Vehicles Without High Voltage System
      • System Overview - Refrigerant Circuit, Vehicles With High Voltage System
      • Refrigerant Line With RESTRICTOR
    • Overview - Condenser, A/C Compressor, Refrigerant Lines And Expansion Valve
      • Notes
      • Condenser, Receiver/Dryer
      • Mechanically Driven A/C Compressor, Refrigerant Line, Expansion Valve, (On Vehicles Without A High-Voltage System).
      • Overview, Electrically-Driven A/C Compressor, Refrigerant Line. High-Voltage Battery Heat EXCHANGER (On Vehicles With A High-Voltage System).
    • Refrigerant Circuit Pressure Sensor -G805-, Removing And Installing
      • Notes
      • Removing
      • Installing
    • A/C Pressure/Temperature Sensor -G395-, Removing And Installing
      • Notes
      • Removing
      • Installing
    • A/C Compressor Regulator Valve -N280-, Checking Switch-On Signal
    • Heater And A/C Unit Refrigerant Cut-Off Valve -N541-, Removing And Installing
      • Removing
      • Installing
    • High Voltage Battery Heater Core Refrigerant Cut-Off Valve -N542-, Removing And Installing
      • Removing
      • Installing
    • Additional Weight On Refrigerant Line
    • Expansion Valve, Removing And Installing
      • Notes
      • Removing
      • Installing
        • Notes
        • Tightening Specifications
    • Refrigerant Lines, Disconnecting And Connecting From Condenser
      • Notes
      • Removing
      • Installing
    • Condenser, Removing And Installing
      • Removing
      • Installing
    • Dryer Cartridge, Removing And Installing
      • Dryer Cartridge, Removing And Installing, DENSO Condenser
        • Notes
        • Removing
        • Installing
        • Tightening Specifications:
      • Dryer Cartridge, Removing And Installing, MODINE Condenser
        • Notes
        • Removing
        • Installing
        • Tightening Specifications:
      • Dryer Cartridge, Removing And Installing, SHOWA/KEIHIN Condenser
        • Notes
        • Removing
        • Installing
    • Refrigerant Lines With Inner Heat EXCHANGER, Removing And Installing
      • Notes
      • Removing
      • Installing
    • Service Connection Differences, Depending On Refrigerant (R134A Or R1234YF)
      • Notes
      • Service Connection Dimensions
    • Service Connection On Low And High Pressure Side, Removing And Installing
      • Notes
      • Removing
      • Installing
    • A/C System, Starting Operation After Filling Refrigerant Circuit
      • Engine, Starting With Empty Refrigerant Circuit When Necessary
      • Procedure For First Starting Engine After Filling Refrigerant Circuit
  • A/C Compressor
    • Overview - A/C Compressor Power Unit
      • Overview - A/C Compressor Power Unit, 4-Cylinder Engine
      • Overview - A/C Compressor Power Unit, 5-Cylinder Engine (AUDI RS3)
        • Notes
        • Version 1 (With Double Belt Pulley)
        • Version 2 (With Single Bent Pulley)
      • Overview - A/C Compressor Power Unit, Electrically-Driven A/C Compressor
    • Overview - Belt Pulley, Mechanically Driven A/C Compressor
      • Overview - DENSO A/C Compressor Belt Pulley
      • Overview - Belt Pulley, SANDEN A/C Compressor, Version 1
      • Overview - Belt Pulley, SANDEN A/C Compressor, Version 2
    • A/C Compressor, Removing And Installing On Bracket
      • Mechanically-Driven A/C Compressor, Removing And Installing At Bracket, 4-Cylinder Engine
        • Notes
        • Removing
        • Installing
        • Tightening Specification
      • A/C Compressor, Removing And Installing At Bracket, 5-Cylinder Engine (AUDI RS3)
        • Notes
        • Removing
        • Installing
        • Tightening Specifications
      • Electrically Driven A/C Compressor On Bracket, Removing And Installing
        • Notes
        • Removing
        • Installing
        • Tightening Specification
    • Refrigerant Lines, Disconnecting And Connecting At A/C Compressor
      • Refrigerant Lines On The Mechanically-Powered A/C Compressor, Connecting And Disconnecting
        • Notes
        • Removing
        • Installing
        • Tightening Specification
      • Refrigerant Lines, Disconnecting And Connecting At Electrically-Driven A/C Compressor
        • Notes
        • Installing
        • Tightening Specification
    • A/C Compressor, Removing And Installing
      • Mechanically-Powered A/C Compressor, Removing And Installing
        • Notes
        • Removing
        • Installing
        • Tightening Specification
      • Electrically-Powered A/C Compressor, Removing And Installing
        • Notes
        • Removing
        • Installing
    • Belt Pulley, Removing And Installing
      • Belt Pulley, Removing And Installing, DENSO A/C Compressor
        • Notes
        • Removing
        • Installing
  • Special Tools