Air Duct In Rear Heater And A/C Unit, Pr Number 9AH/ 9AQ

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The rear heater and A/C unit and the Rear A/C Display Control Head -E265- are optional equipment.
The activation of the different doors in the rear heater and A/C unit vent takes place via the adjustment motors.

Fig 1: Air Duct In Rear A/C Unit Component Location Overview

Courtesy of AUDI OF AMERICA, LLC

Air Intake from the Front Heater and A/C Unit in the Rear Heater and A/C Unit (Fresh Air Mode)
Air Inlet from the Area Under the Center Console (Recirculation Mode)
Rear Fresh Air Blower -V80-
- Check the function using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function
- Removing and Installing. Refer to Rear Fresh Air Blower -V80-, EMOVING AND INSTALLING .
Rear Heater and A/C Unit
- Component Location Overview. Refer to COMPONENT LOCATION OVERVIEW - REAR ADJUSTMENT MOTOR .
Air Outlet to the Footwell Vent Under the Right Seat
Air Outlet to the Vent in the Right B-Pillar
Air Outlet to the Footwell Vent Under the Left Seat
Air Outlet to the Vent in the Left B-Pillar
Air Outlet to the Vent in the Right Center Console
Air Outlet to the Vent in the Left Center Console
Heat Exchanger Inside the Rear Heater and A/C Unit
- Removing and Installing. Refer to HEATER CORE, REMOVING AND INSTALLING .
Evaporator in the Rear Heater and A/C Unit
- Removing and installing (only possible with the rear heater and A/C unit removed). Refer to EVAPORATOR, REMOVING AND INSTALLING .
Upper Temperature Door
- The temperature door is indicated in the "heat" setting
- For separated temperature regulation of the air from the left and right vents, a temperature door is installed on both the left and right side.
- The upper temperature door and lower temperature door of one side are each operated by one actuator/adjustment motor. They are connected by a curved washer and a relay lever. Refer to COMPONENT LOCATION OVERVIEW - REAR ADJUSTMENT MOTOR .
Lower Temperature Door
- The temperature door is indicated in the "heat" setting
- For separate regulation of the temperature of the air from the left and right vents, two temperature doors are installed on the left and on the right side.
- The upper temperature door and lower temperature door of one side are each operated by one actuator/adjustment motor. They are connected by a curved washer and a relay lever. Refer to COMPONENT LOCATION OVERVIEW - REAR ADJUSTMENT MOTOR .
Air Vent from Evaporator
- Here to the heater core, since the temperature control doors are labeled in the "heat" setting
Condensation Water Drain Under the Evaporator
Air Outlet from Rear Fresh Air Blower -V80- into Evaporator
Condensation Water Drain Under the Rear Fresh Air Blower -V80-.
Air Inlet into the Rear Fresh Air Blower -V80-
- Depending on the position of the recirculation doors from the front heater and A/C unit or from the area under the center console
Air Recirculation Door in the Rear Heater and A/C unit
- Both recirculation doors are shown in the "air intake from the front heater and A/C unit" position in this illustration.
- Both recirculation doors are controlled by the Rear Recirculation Door Motor -V421- which is activated by the Rear A/C Display Control Head -E265-.
- When the recirculation doors are open, the air from the Rear Fresh Air Blower -V80- is not drawn in from the front heater and A/C unit but from under the center console.