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Home >> Audi >> 2016 >> S4 Premium Plus, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 554 (Heating, Ventilation & Air Conditioning (2 Of 2) (As Of 06.2014)) >> 87 Air Conditioning >> Air Guide >> Air Intake And Outlet Openings >> Temperature Doors in the Left and Right Radiator Housing

Temperature Doors in the Left and Right Radiator Housing

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NOTE:

On the "Convenience" A/C system, the front right temperature doors -item  1- "Upper Right Temperature Door" and the front left -item  2- "Upper Left Temperature Door" are each actuated by an actuator (Right Temperature Door Motor -V159- and Left Temperature Door Motor -V158-). Both temperature doors for the right rear vents, refer to -item  3- "Lower Right Temperature Door" and the left rear -item  4- "Lower Left Temperature Door" are connected to each other by a connecting rod; they are actuated via the Rear Temperature Door Motor -V137-. Refer to OVERVIEW - ATTACHMENTS FOR HEATER AND A/C UNIT AND AIR INTAKE HOUSING .

On the "Basis" A/C system, the temperature door for the right instrument panel vents -item  1- "Upper Right Temperature Door" and the front and rear right footwell vents -item  3- "Lower Right Temperature Door" as well as the temperature door for the left instrument panel vents -item  2- "Upper Left Temperature Door" and the front and rear left footwell vents -item  4- "Lower Left Temperature Door" are connected to each other by the shafts (refer to -item  13- "Lower Temperature Door Shaft" and -item  12- "Upper Temperature Door Shaft"). The right -item  3- "Lower Right Temperature Door" and the left rear -item  4- "Lower Left Temperature Door" temperature door shafts are connected to each other by a connecting rod; they are both actuated by the Temperature Regulator Door Motor -V68-. Refer to OVERVIEW - ATTACHMENTS FOR HEATER AND A/C UNIT AND AIR INTAKE HOUSING .

Fig 1: Identifying Heater Core Housing Temperature Doors
GWWA87-10569Courtesy of AUDI OF AMERICA, LLC
  1. Upper Right Temperature Door
    • On the "Convenience" A/C system, for the right and center instrument panel vents as well as the front right footwell vent
    • On the "Basis" A/C system, for the right and center instrument panel vents
    • In this illustration, the temperature door is shown in the "heat" position.
      NOTE:

      The "Basis" A/C system does not have separating walls, therefore, air does not get diffused after it has left the Auxiliary Heater Heating Element -Z35- /honeycomb.

  2. Upper Left Temperature Door
    • On the "Convenience" A/C system, for the left and left center instrument panel vents as well as for the front left footwell vent
    • On the "Basis" A/C system, for the left and center instrument panel vents, refer to -item  1- "Upper Right Temperature Door".
    • In this illustration, the temperature door is shown in the "cooling" position.
  3. Lower Right Temperature Door
    • On the "Convenience" A/C system, for the rear right footwell vents
    • On the "Basis" A/C system, for the front right and rear right footwell vents, refer to -item  1- "Upper Right Temperature Door".
    • In this illustration, the temperature door is shown in the "cooling" position.
  4. Lower Left Temperature Door
    • On the "Convenience" A/C system, for the rear left footwell vents
    • on the "Basis" A/C system, for the left front and the left rear footwell vents, refer to -item  1- "Upper Right Temperature Door".
    • In this illustration, the temperature door is shown in the "heat" position.
  5. Right Radiator Housing
    • Different versions, depending on the A/C system version ("Convenience" and "Basis").
  6. Left Radiator Housing
    • Different versions, depending on the A/C system version ("Convenience" and "Basis").
  7. Heat Exchanger
  8. Foam Seal
    • Only on vehicles equipped with the "Convenience" A/C system; present to separate the air flow between the right and left side
  9. Foam Seal
    • Only on vehicle equipped with the "Convenience" A/C system; equipped to separate the air flow between the front and rear
  10. Auxiliary Heater Heating Element -Z35- /Honeycomb
    • Covered with different foam seals, depending on the A/C system version ("Convenience" and "Basis"). Refer to Auxiliary Heater Heating Element -Z35-, REMOVING AND INSTALLING .
      NOTE:

      In MY 2009, as a running change, a new version of the Auxiliary Heater Heating Element -Z35- is being installed (the heating elements are a bit more narrow); be sure to use the correct version and note the allocation .

  11. Foam Seal
    • Only on vehicles equipped with the "Convenience" A/C system; present to separate the air flow between the right and left side
  12. Upper Temperature Door Shaft
    • on the "Basis" A/C system, connected with the shaft, refer to -item  13- "Lower Temperature Door Shaft" (the doors move together).
  13. Lower Temperature Door Shaft
    • on the "Basis" A/C system, connected with the shaft, refer to -item  12- "Upper Temperature Door Shaft" (the doors move together).
  14. Upper Temperature Door Shaft
    • On the "Convenience" A/C system, located in the shaft, refer to -item  15- "Lower Temperature Door Shaft" (the doors move independent of each other).
  15. Lower Temperature Door Shaft
    • On the "Convenience" A/C system, located in the shaft, refer to -item  14- "Upper Temperature Door Shaft" (the doors move independent of each other).
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