Overview - Inner Heat EXCHANGER And Components Under Left Front Fender, All Vehicles

Fig 1: Exploded View Of Inner Heat Exchanger And Components Under Left Front Fender

Courtesy of AUDI OF AMERICA, LLC

1. O-Ring
   • Replace after removing. Refer to the Parts Information for the version.
   • Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
2. High Pressure Side Refrigerant Line
   • From the condenser to the inner heat exchanger
   • There are different versions. Refer to the Parts Information.
   • Removing and Installing. Refer to REFRIGERANT LINES, DISCONNECTING AND CONNECTING AT CONDENSER .
   • Removing and installing from inner heat exchanger. Refer to REFRIGERANT LINES, DISCONNECTING AND CONNECTING .
3. Screw
   • 9 Nm
4. Low Pressure Side Refrigerant Line
   • From the inner heat exchanger to the A/C compressor
   • There are different versions. Refer to the Parts Information.
   • Removing and installing from the A/C compressor. Refer to OVERVIEW - A/C COMPRESSOR AND CONDENSER, VEHICLES WITHOUT HIGH-VOLTAGE SYSTEM .
   • Removing and installing from inner heat exchanger. Refer to REFRIGERANT LINES, DISCONNECTING AND CONNECTING .
5. O-Ring
   • Replace after removing. Refer to the Parts Information for the version.
   • Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
6. Inner Heat Exchanger Bracket
   • There are different versions. Refer to the Parts Information.
7. Refrigerant Line with Inner Heat Exchanger
   • In this refrigerant line, the liquid warm refrigerant flowing on the high pressure side releases energy into the vaporous cold refrigerant flowing on the low pressure side. This increases the efficiency of the A/C system.
   • Removing and Installing. Refer to REFRIGERANT LINES WITH INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
8. O-Ring
   • Replace after removing. Refer to the Parts Information for the version.
   • Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
9. O-Ring
   • Replace after removing. Refer to the Parts Information for the version.
   • Coat with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
10. Pass-Through for Refrigerant Lines in the Plenum Chamber
    • There are different versions. Refer to the Parts Information.
    • This image shows the version for vehicles with a second evaporator (with a "High" A/C system). Refer to OVERVIEW - EXPANSION VALVE AND REFRIGERANT LINES TO THE REAR HEATER AND A/C UNIT, VEHICLES WITH "High A/C System" .
    • The version for vehicles with one evaporator (with a "Low" "Mid" or "Mix" A/C system) does not have additional outlets.
    • Removing and Installing. Refer to PLENUM CHAMBER REFRIGERANT LINE PASS-THROUGH, REMOVING AND INSTALLING .
11. Screw
    • 9 Nm