Overview - Front Display Control Head, "High" A/C System

General Information. Refer to HEATING AND A/C SYSTEM CONTROL AND REGULATION COMPONENTS IN VEHICLE INTERIOR .
For these vehicles (For example the Audi A4) there are different versions of the heating and A/C system depending on the equipment. Make sure to use the correct version and pay attention to the allocation of different components. Refer to HEATING AND A/C SYSTEM VERSIONS .
The following illustration a Front A/C Display Control Head -E87-, is shown as it would be installed on a vehicle with a "High" A/C system and with the "seat heating and ventilation" optional equipment. There are different versions of the Front A/C Display Control Head -E87- with different allocations, pay attention to the correct allocation. Refer to the Parts Information.
The following briefly discusses the different buttons and knob for the adjustment of the vehicle interior air conditioning on the Front A/C Display Control Head -E87-. An exact description of the different possibilities for the vehicle air conditioning via the settings on the Front A/C Display Control Head -E87- can be found for example in the vehicle Owner's Manual. Refer to the Owner's Manual and the Infotainment/MMI Operating Instructions.

Courtesy of AUDI OF AMERICA, LLC

Infrared Sensor for Temperature and Sunlight
- The sensor determines the temperature and sunlight on the display control head
  NOTE:
  A contaminated or taped off infrared sensor determines an incorrect temperature, this can lead to problems with the regulation of the heating and A/C system.
Left Seat Heating Button
- Illuminated LED indicates the level selected.
- The selected setting can be set back one unit after a pre-set time. Refer to SEAT HEATING .
  NOTE:
  Depending on the vehicle version and the Front A/C Display Control Head -E87- here instead of the activation of the "seat heating" the "neck heating" function can be activated. Refer to Owner's Manual and Owner's Manual Infotainment/MMI.
Knob for the Temperature Preset and the Left Auto Button
- Auto button for the automatic regulation of the heating and A/C system on the left side.
- The set temperature and the state of the automatic regulation is displayed in the knob.
- With active operation in the Rear A/C Display Control Head -E265- the temperature display is switched off for a certain period of time.
  NOTE:
  The calculated passenger compartment temperature from the Front A/C Display Control Head -E87- can be higher or lower than the set temperature due to various factors (exterior temperature, sunlight etc.).
Defrost Mode Button
- Illuminated LED indicates the "defrost mode" function is selected.
- In defrost mode the air is directed upward (to the windshield and the front side window) the A/C compressor is switched on and the recirculating air mode is switched off
- On a vehicle with the "windshield defogger" optional equipment installed the activation of this is shown by the turned on or blinking LED. Refer to WINDSHIELD DEFOGGER .
Display for the Set Functions of the Heating and A/C System
- In the display the selected or activated settings from the Front A/C Display Control Head -E87- is displayed according to the characteristic curve.
- On a vehicle with a parking heater installed as optional equipment for an active parking air conditioning this is shown by the turning on of symbols ("Parking heater on" or "Parking heater timer/parking ventilation mode active"). Refer to GENERAL INFORMATION .
Recirculating Air Mode Button
- Illuminated LEDs indicate the "recirculated-air mode" function is selected.
- The "recirculated-air mode" function is canceled when the defrost mode button (air to the windshield) is pressed
Knob for the Temperature Preset and the Right Auto Button
- Auto button for the automatic regulation of the heating and A/C system on the right side.
- The set temperature and the state of the automatic regulation is displayed in the knob.
- With active operation in the Rear A/C Display Control Head -E265- the temperature display is switched off for a certain period of time.
  NOTE:
  The calculated passenger compartment temperature from the Front A/C Display Control Head -E87- can be higher or lower than the set temperature due to various factors (exterior temperature, sunlight etc.).
Right Seat Heating Button
- Illuminated LED indicates the level selected.
- The selected setting can be set back one unit after a pre-set time. Refer to SEAT HEATING .
  NOTE:
  Depending on the vehicle version and the Front A/C Display Control Head -E87- here instead of the activation of the "seat heating" the "neck heating" function can be activated. Refer to Owner's Manual and Owner's Manual Infotainment/MMI.
Right Seat Ventilation Button
- Illuminated LED indicates the level selected.
- The selected setting can be set back one unit after a pre-set time. Refer to SEAT VENTILATION .
  NOTE:
  Depending on the vehicle version and the Front A/C Display Control Head -E87- here additionally for the "seat ventilation" also the activation of the "seat heating" can take place (for example the version with the "neck heating" function). Refer to Owner's Manual and Owner's Manual Infotainment/MMI.
OFF Button for the Heating and the Climate Controls
- Illuminated LED indicates the "off" function is selected.
Button for Adjustment of the Right Air Distribution
- The adjusted or the selected air distribution (upper, center or lower) for the right side is shown in the display
Button for the Adjustment of Additional Functions
- Specific functions ("parking heater", "A/C ON", "A/C eco", "A/C OFF" etc.) can be selected and deselected via this button
- The set or selected function is shown in the display.
- Different versions and functions, depending on the vehicle version. Refer to Owner's Manual and Owner's Manual Infotainment/MMI.
  NOTE:
  For the selected function A/C OFF the activation of the A/C compressor is switched off.
  
  Via the selected function A/C MAX the vehicle interior is cooled as quickly as possible, if necessary also with a raised fresh air blower speed.
  
  Via the selected function ECO the vehicle interior is cooled as quickly as possible without comfort restriction (for example without raised fresh air blower speed) via the calculated passenger compartment temperature setting.
  
  The calculated passenger compartment temperature from the Front A/C Display Control Head -E87- can be higher or lower than the set temperature due to various factors (exterior temperature, sunlight etc.).
Air Volume Preset Button
- The adjusted or the selected air quantity from the controls is shown in the display
- The air volume is controlled via the speed of the Fresh Air Blower - V2- and the setting of the doors in the A/C Display Control Head from the Front A/C Display Control Head -E87- via the characteristic curve.
- The speed of the Fresh Air Blower -V2- is regulated according to the settings on the Front A/C Display Control Head -E87- and the Rear A/C Display Control Head -E265- as well as from the Front A/C Display Control Head -E87- determined temperature via a characteristics curve.
Button for the Adjustment of Additional Functions
- Certain functions ("SYNC", "Three zones", "Rear operation from the front" etc.) can be selected and deselected via this button.
- The set or selected function is shown in the display.
Button for Adjustment of the Left Air Distribution
- The adjusted or the selected air distribution (upper, center or lower) for the left side is shown in the display
Rear Window Defogger Button
- Illuminated LED indicates the "Rear window defogger on" function is selected. Refer to REAR WINDOW DEFOGGER .
Left Seat Ventilation Button
- Illuminated LED indicates the level selected.
- The selected setting can be set back one unit after a pre-set time. Refer to SEAT VENTILATION .
  NOTE:
  Depending on the vehicle version and the Front A/C Display Control Head -E87- here additionally for the "seat ventilation" also the activation of the "seat heating" can take place (for example the version with the "neck heating" function). Refer to Owner's Manual and Owner's Manual Infotainment/MMI.