Mercury Mountaineer 2002 s Service Manual

Turning the DEATC system on
Press AUTO, any of the override controls, the fan speed control, or
either of the temperature selection controls. The DEATC system will
only operate when the ignition is in the ON position.
Turning the DEATC system off
Press OFF. The outside temperature
(EXT) function (if selected) will
continue to operate until the
ignition is turned off.
DEATC automatic operation
Press AUTO and select the desired
temperature. The selected
temperature will appear in the
display window, and an indicator
above the AUTO control will light.
The DEATC system will either heat
or cool the vehicle to achieve the
selected temperature. The system
will automatically determine the fan
speed, airflow location and whether outside or recirculated air is
required.
When in AUTO mode and the weather is cool, the DEATC directs the
majority of the airflow to the floor area. The system will allow some
airflow out the windshield defroster ducts and the demister outlets to
AUTO OFFDUAL A/C
R EXT
F C
FF
AUTO OFFEXT
F C
AUTO OFFEXT
F C
F
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41

reduce window fogging. Additionally, if the engine is not warm enough to
provide heat, the fan will operate at a low speed and the airflow will be
directed to the windshield or to the floor. The fan speed will start to
increase and the airflow location will change to the floor area.
If unusual conditions exist (window fogging, etc.), the manual override
controls allow you to select airflow locations as necessary. To return to
full automatic control, press the AUTO control.
Single/dual electronic temperature zone
Press DUAL to enable or disable the dual zone temperature feature.
When DUAL is pressed, the display window indicates the current
temperature setting for the driver and the last temperature setting that
was selected for the passenger. In addition to the DUAL control, the
passenger may engage the dual temperature zone feature by pressing the
passenger side temperature control.
The DUAL indicator will be lit when the dual temperature zone feature is
selected.
AUTO OFFDUAL A/C
R EXT
F C
FF
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42

Driver side temperature selection
The display window indicates the selected temperature and manual
control of fan speed (
) if automatic fan speed is not desired.
To control the temperature, select any temperature between 16°C (60°F)
and 32°C (90°F) by pressing the temperature control on the driver side
of the system.
Passenger side temperature selection
To control the temperature, select
any temperature between 16°C
(60°F) and 32°C (90°F) by pressing
the temperature control on the
passenger side of the system.
Temperature conversion
Press the Fahrenheit/Celsius (°F°C)
control to switch between
Fahrenheit and Celsius temperature
on the DEATC display only. The
temperature in Celsius will be
displayed in half-degree increments.
The English/Metric control on the
trip computer and message center
(if equipped) will not change the
DEATC temperature display. Refer toMessage Centerin the
Instrumentationchapter.
AUTO
OFFDUAL A/C
R EXT
F C
FF
A/C
DUAL
R
F
AUTO OFFEXT
F C
C
,
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43

Fan speed ()
When AUTO is pressed, fan speed is adjusted automatically for existing
conditions. You can override fan speed at any time. To control fan speed
manually, press the fan control to cancel the automatic fan speed
operation. Press the control up for higher fan speed or down for lower
fan speed. The display will show
and a bar graph to indicate manual
fan operation and relative speed.
When the fan is adjusted in the AUTO mode, the AUTO indicator will
remain lit and the system will remain in auto operation.
To return to automatic fan operation, press AUTO. The fan icon and bars
will disappear from the display, and the DEATC system will return to full
automatic operation.
•A/C control
A/C(air conditioning)—Used to manually enable or disable the
operation of the air conditioning in all modes except
and.In
all modes, the air conditioning will only function if the outside
temperature is about 6°C (43°F) or higher. When manual A/C is selected
(ON) the indicator will be lit. When manual A/C is selected (OFF) the
indicator will not be lit.
AUTO DUALOFFA/C
R EXT
F C
FF
AUTO DUALOFFA/C
R EXT
F C
FF
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44

Inand, if the outside temperature is about 6°C (43°F) or
higher, the air conditioner will automatically dehumidify the air to reduce
fogging. However, the A/C indicator will be off and the A/C override
control cannot be selected.
The air conditioning compressor can operate in all modes except OFF.
However, the air conditioning will only function if the outside
temperature is about 6°C (43°F) or higher.
Since the air conditioner removes considerable moisture from the air
during operation, it is normal if clear water drips on the ground under
the air conditioner drain while the system is working and even after you
have stopped the vehicle.
When AUTO is selected, the A/C operates automatically for existing
conditions. However, the A/C indicator will not be lit. If A/C is selected
when in AUTO operation, the DEATC system will be disabled and you
will return to manual operation with the A/C indicator lit.
To return to automatic A/C operation, press AUTO.
•Recirculation control
(air recirculation)—Used to manually enable or disable
recirculated air operation in all modes except
and. The use of
recirculated air when the air conditioning is operating helps to reduce
the amount of time to cool down the interior of the vehicle in very hot
conditions. Recirculated air may also help to keep undesired outside
odors from reaching the vehicle interior. It is recommended to allow the
DEATC system to automatically control the selection of outside or
recirculated air.
The recirculation control cannot be selected in
or, as interior
fogging may occur.
When AUTO is selected, the recirculated air feature operates
automatically for existing conditions. However, the air recirculation
AUTO DUALOFFA/C
R EXT
F C
FF
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45

indicator will not be lit. If the recirculated air is selected while in AUTO
operation, the DEATC system will be disabled and you will return to
manual operation with the recirculated air indicator lit and with the A/C
operating.
To return to automatic recirculated air operation, press AUTO.
Do not leave the DEATC system in recirculated air operation for
extended periods of time while the system is in a heating mode or in
cold/damp conditions as this may cause interior fogging of the front, side
and rear windows.
Manual override controls
The manual override controls allow you to manually determine where
airflow is directed. To return to fully automatic control, press AUTO.
When a manual airflow override control is selected, the DEATC system
will turn off the AUTO indicator and display the indicators of all
operating override controls. More than one override control indicator
may turn on when an override control is selected.
•Airflow direction control
(panel)—Distributes air through the instrument panel registers.
(panel/floor)—Distributes air through the instrument panel
registers and the front seat floor ducts. For added customer comfort, the
air distributed through the floor ducts may be slightly warmer than the
air sent to the instrument panel registers.
(floor)—Distributes air through the front seat floor ducts. The
system will allow some airflow out the window defroster ducts and the
demister outlets.
(floor/defrost)—Distributes outside air through the windshield
defroster ducts, the demister outlets and the front and rear seat floor
AUTO DUAL
A/C
R EXT
F C
FF
OFF
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ducts. If the temperature is about 6°C (43°F) or higher, the air
conditioner will automatically dehumidify the air to reduce fogging.
(Note that the A/C indicator does not illuminate when this mode is
selected.) Recirculation and A/C override controls cannot be selected.
For added customer comfort, the air distributed through the floor ducts
may be slightly warmer than the air sent to the windshield defroster
ducts.
(defrost)—Distributes outside air through the windshield
defroster ducts and the demister outlets. It can be used to clear ice or
fog from the windshield. If the outside air temperature is about 6°C
(43°F) or higher, the air conditioner will automatically dehumidify the air
to reduce fogging. (Note that the A/C indicator does not illuminate when
this mode is selected.) Recirculation and A/C override controls cannot be
selected. For added customer comfort, the system will allow some airflow
through the floor ducts in this mode.
•Turn DEATC off
OFF-Outside air is shut out. The fan, heating and air conditioning will
not operate. The outside temperature will still display when selected
with the ignition in the ON position.
R(rear window defroster)—Refer toRear window defroster.
Displaying outside temperature
Press EXT to display the outside air temperature. It will remain selected
until the EXT control is pressed again.
If the driver or passenger temperature or the fan speed is changed, or
the AUTO or
modes are selected while the outside temperature is
displayed, the driver and passenger temperature display will be displayed
for 4 seconds. Following this, the outside temperature display will return
to the window.
AUTO DUALOFFA/C
R EXT
EXT TEMP
F C
F
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47

If the outside temperature is displayed while the DEATC system is in the
OFF mode and the DEATC is turned on, the driver and passenger
temperatures will be displayed for 4 seconds. Following this, the outside
temperature display will return to the window.
The outside temperature reading is most accurate when the vehicle is
moving. Higher readings may be obtained when the vehicle is not
moving. The readings that you get may not agree with temperatures
given on the radio due to differences in vehicle and station locations.
Operating tips
•In humid weather conditions, place the climate control system in
orRbefore driving. This will reduce fogging on your windshield.
Once the windshield has been cleared, operate the climate control
system as desired.
•To reduce humidity buildup inside the vehicle in cold weather
conditions, don’t drive with the climate control system in the OFF
position or
.
•To reduce humidity buildup inside the vehicle in warm weather
conditions, don’t drive with the climate control system in the OFF
position.
•Under normal weather conditions, your vehicle’s climate control
system should be left in any position other than OFF or
when
the vehicle is parked. This allows the vehicle to“breathe”through the
outside air inlet duct.
•Under snowy or dirty weather conditions, your vehicle’s climate
control system should be left in the OFF position when the vehicle is
parked. This allows the climate control system to be free from
contamination of outside pollutants.
•If your vehicle has been parked with the windows closed during warm
weather conditions, the air conditioner will perform more efficiently in
cooling the vehicle if driven for two or three minutes with the
windows open. This will force most of the hot, stale air out of the
vehicle. Once the vehicle has been“aired out”, operate the climate
control system as desired.
•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
•Do not place objects over the defroster outlets. These objects can
block airflow and reduce your ability to see through your windshield.
Avoid placing small objects on top of the instrument panel. These
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48

objects may fall down into the defroster outlets and block airflow, in
addition to damaging the climate control system.
To aide in side window defogging/demisting in cold weather conditions:
1. Select
2. Set the temperature control to full heat
3. Select A/C
4. Set the fan speed to High
5. Direct the outer panel vents towards the side windows
In order to increase the airflow to the outer panel vents, close the
central panel vents.
Do not place objects on top of the instrument panel, as these
objects may become projectiles in a collision or sudden stop.
Auxiliary climate controls (if equipped)
Your vehicle may be equipped with auxiliary climate controls which are
located in the overhead console of the first row and in the headliner for
second row seating. The auxiliary climate control feature provides
increased capacity to quickly heat or cool your vehicle.
If your vehicle is equipped with a manual heating and air conditioning
system, the auxiliary climate controls are dependent on the main climate
control system. If the main climate control system is in the OFF position,
the auxiliary climate controls will not work.
If your vehicle is equipped with a DEATC system, the auxiliary climate
controls are independent of the main climate control system. If the main
climate control system is in the OFF position, the auxiliary climate
controls will still work. However, the A/C function will not operate unless
the A/C control has been selected on the main climate control system.
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49

Frontauxiliary control
For the rear auxiliary climate
controls to function, the front
auxiliary climate control must be set
to REAR.
To control the auxiliary climate
control system from the front
controls, turn the fan speed control
knob to the desired speed.
Turn the temperature control to
regulate the air temperature.
Press the mode selector once to
select air distribution through the
overhead vents. The
icon will
illuminate on the temperature
selector.
Press the mode selector again to select air distribution through the floor
vents. The
icon will illuminate on the temperature selector. Only the
auxiliary control head (front or rear) that is active will have the indicator
lights functioning.
4 3 2
REAR0
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50