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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (Air Conditioning (Front Heater & A/C Unit) (Coupe)) >> 87 Air Conditioning >> Air Guide >> Air Intake And Outlet Openings >> Air Routing In Air Intake Housing And A/C Unit

Air Routing In Air Intake Housing And A/C Unit

WARNING: This page is about a different variant/trim than selected.
NOTE:

This illustration shows the "Convenience" A/C system; some components are not part of the "Basis" A/C system.

The activation of the different doors in the vents and the temperature doors differs between the "Basis" and "Convenience" A/C systems

In order to show the air flow in the air intake house and in the A/C unit, both these components are shown cut open through the "A - A" and "B - B" lines.

From 01/2008, A/C units which have an additional connection for the glove compartment cooling are being installed as a running change. On vehicles without glove compartment cooling, this connection is sealed with a plug. Refer to GLOVE COMPARTMENT COOLING CONNECTION ON AIR INTAKE HOUSING .

This illustration shows the A/C without a connection for glove compartment cooling. On vehicles with glove compartment cooling, the cooled air comes directly past the evaporator into the glove compartment -item  ) AIR INTAKE AND OUTLET OPENINGS - EVAPORATOR.

Fig 1: Identifying Air Intake Housing With A/C Unit Air Routing
GWWA87-10568Courtesy of AUDI OF AMERICA, LLC
  1. A/C Unit
  2. Air Intake Housing
  3. Fresh Air Intake
  4. Air Intake from the Vehicle Interior (Recirculating Air Mode)
    • The air is drawn out of the front passenger footwell when the air recirculation flap under the glove compartment is open.
    • In this illustration, the air recirculation door is shown in the "closed" position.
  5. Fresh Air Blower -V2-
  6. Dust and Pollen Filter
  7. Air Intake Housing Lower Section (with Installation Components)
    • This illustration shows the air intake housing sectioned by the "A - A " line.
  8. Evaporator
  9. Lower Part of the A/C Unit (with Installation Components)
    • This illustration shows the A/C unit sectioned by the "A - A " line
  10. Temperature Door for the Front Right Vent
    • In this illustration, the temperature door is shown in the "heat" position.
    • On the "Convenience" A/C system, the front right and left temperature doors are each actuated by an actuator. Both temperature doors for the rear vents are connected to each other by a connecting rod; they are actuated by another actuator. Refer to OVERVIEW - ATTACHMENTS FOR HEATER AND A/C UNIT AND AIR INTAKE HOUSING .
    • On the "Basis" A/C system, one shaft connects the front temperature flaps and the temperature flap for the rear footwell vent to each other. The right and left temperature flap shafts are connected to each other by a connecting rod; they are actuated by one actuator. Refer to OVERVIEW - ATTACHMENTS FOR HEATER AND A/C UNIT AND AIR INTAKE HOUSING .
    • Temperature doors in the left and right radiator housing. Refer to AIR INTAKE AND OUTLET OPENINGS .
  11. Right Rear Vent Temperature Door
  12. Heat Exchanger
  13. Auxiliary Heater Heating Element -Z35- /Honeycomb

    The Auxiliary Heater Heating Element -Z35- is installed on vehicles with a diesel engine and on vehicles with certain gasoline engines. Refer to AUXILIARY HEATER HEATING ELEMENT -Z35-, CHECKING .

    Vehicles with a gasoline engine and without an Auxiliary Heater Heating Element -Z35- have a honeycomb installed in the installation space as a place holder (this assures that current conditions in the A/C unit with and without Auxiliary Heater Heating Element -Z35- are the same).

    • If a parking heater (that is installed as optional equipment) is activated as an auxiliary heater on vehicles with a diesel engine, there is no Auxiliary Heater Heating Element -Z35-, but rather a honeycomb is installed (introduction open). Refer to AUXILIARY HEATER HEATING ELEMENT -Z35-, CHECKING .
    • 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. Refer to the Parts Information..

      As a running change from MY 2010, gasoline engines that can run on bioethanol (Flex Fuel vehicles) were introduced, which currently have an Auxiliary Heater Heating Element -Z35-. Refer to AUXILIARY HEATER HEATING ELEMENT -Z35-, CHECKING .

      Currently an Auxiliary Heater Heating Element -Z35- is also installed on vehicles with a high voltage system (hybrid vehicles) and a gasoline engine. Refer to AUXILIARY HEATER HEATING ELEMENT -Z35-, CHECKING .

  14. Separator Wall
    • Present only on vehicles equipped with the "Convenience" A/C system (not on the "Basis" A/C system; here only one temperature setting for all vents is possible).
    • On the "Convenience" version, the air guide to the left and right vents separate and responsible for the differing air temperatures coming out of the vents. The temperature of the air coming out depends on the position of the respective temperature doors -item  ) AIR INTAKE AND OUTLET OPENINGS - TEMPERATURE DOOR FOR THE FRONT RIGHT VENT.
  15. Separator Wall
    • Present only on vehicles equipped with the "Convenience" A/C system (not on the "Basis" A/C system; here only one temperature setting for all vents is possible).
    • On the "Convenience" A/C system, the air flow to the front and rear vents are separated from each other; the requirement for different front and rear air temperatures (depends on the setting of each temperature door -item  ) AIR INTAKE AND OUTLET OPENINGS - TEMPERATURE DOOR FOR THE FRONT RIGHT VENT).
  16. Temperature Door for the Rear Left Vent
  17. Temperature Door for the Front Left Vent
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