1999 CADILLAC DEVILLE ECO mode

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To find your comfort zone, start with the 75
F (24
C)
setting and allow about 30 minutes for the system to
regulate. Press the red or blue temperature buttons to
adjust the temperature if necessary. If you choose 60
F
(16
C), the system will remain at that maximum cooling
setting and will not regulate fan speed. If you choose the
temperature of 90
F (32
C), the system will remain at
that maximum heating setting and will not regulate fan
speed. Choosing either maximum setting will not cause
the system to heat or cool any faster.
With the automatic setting, the air conditioning
compressor automatically cycles when needed to cool
the air. In cold weather, when the system senses the need
for heat, the airflow will be directed out the floor
outlets. As the interior temperature approaches a desired
setting, the blower speed will decrease. To maintain
interior comfort, the airflow may move to the instrument
panel air outlets and floor outlets (bi
-level mode). On
bright sunny days in cold weather, the airflow may come
out of the air conditioning outlets (AC mode) to
maintain comfort and prevent stuffiness.If your vehicle is sitting out on a hot day and you have it
set on AUTO, the air will first flow out the floor air
outlets for a few seconds. That is normal. This is to
expel hot air from the air outlets. As the air is cooled,
the airflow will move through the air conditioning
outlets. If you start your vehicle with the fan setting on
HI, it will skip the air conditioning purge.
To avoid blowing cold air in cold weather, the system will
delay turning on the fan until warm air is available. The
length of delay depends on the outside air temperature,
engine coolant temperature or the time since the engine
was last started. As the coolant warms up, the blower fan
speed will gradually increase and air will flow from the
heater outlets, with some airflow to the windshield to
prevent fogging under most normal conditions.
If you leave your vehicle, the system will remember the
control setting the next time you start your engine,
except for recirculation and defrost. Each ignition cycle
cancels recirculation, whereas, DEFROST will change
to automatic operation when the ignition is shut off and
then turned back on.

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Manual Operation
RECIRCULATION: Press this button to limit the
amount of fresh air entering your vehicle. This is helpful
when you are trying to cool the air quickly or limit odors
entering your vehicle. In the AUTO mode, the system
will use recirculation as necessary to cool the air.
Pressing the recirculation button will change the
operation to a manual mode and the air will recirculate
non
-stop. Press this button again to turn off the
recirculation feature.
If you notice the windows fogging, press the
recirculation button to exit the recirculation mode.
OFF: Press this button to turn the system off. Fresh air
will continue to flow through the vehicle, and the
system will try to maintain the previously set
temperature. The outside temperature will show in the
display when the system is off.
DEFOG: Press this button to divide the air between the
windshield and the heater outlets. This is useful when
fog appears on the windshield or side glass due to
sudden rain or snowy conditions.
AUTO/ECON: Press this button to switch between
AUTO and ECON. The ECON setting attempts to keep air
at a selected temperature, however, it does not remove
humidity from the air. Use this setting in cold or coolweather to save fuel. The AUTO setting is used when
it's warm outside and you need to cool the air in order to
maintain a selected temperature and blower speed.
FAN SPEEDS: Press the button with the fan symbol
on it until AUTO is displayed on the screen. At this
setting, the fan speed is automatically controlled. If it is
cold outside, the blower may not run in the maximum high
fan speed right away. The system checks the temperature
of the engine coolant to assure it is warm enough to
provide heat. When the engine coolant is warm, the
controller allows the fan to gradually increase to a higher
speed. This prevents cold air from blowing into the
passenger compartment. If you want the blower fan at a
high speed, press the up arrow button until you see HI on
the display. If you want the fan speed to be automatic, but
you like the fan speed to be higher than the AUTO setting,
press the fan symbol button until HI AUTO is shown on
the display. If you want the blower fan at a low speed,
press the down arrow button until LO is shown on the
display. If you want the fan speed to run lower than the
AUTO setting, press the button until AUTO LO is shown
on the display.
DEFROST: Press this button to quickly remove
fog or frost from the windshield. This setting sends most
of the airflow to the windshield with only a small
amount to the floor outlets.

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Mode Button
Press the MODE button to deliver air through the floor,
middle or windshield outlets. The system will stay in the
selected mode until the MODE button is pressed again.
Press the up or down arrow to cycle through the
available modes.
Automatic Operation
When the system is set for automatic operation, sensors
will control the air delivery mode. Air will come from
the floor, middle or windshield outlets. The fan speed
will vary as the system maintains the selected
temperature setting.
Be careful not to put anything over the solar sensor
located in the middle of the instrument panel near the
windshield. This sensor is used by the automatic system
to regulate temperature.
To find your comfort zone, start with the 75
F (24
C)
setting and allow about 30 minutes for the system to
regulate. Turn the TEMP/AUTO knob to adjust the
temperature if necessary. If you choose 60
F (16
C),
the system will remain at that maximum cooling setting
and will not regulate fan speed. If you choose the
temperature of 90
F (32
C), the system will remain at
that maximum heating setting and will not regulate fan
speed. Choosing either maximum setting will not cause
the system to heat or cool any faster.With the automatic setting, the air conditioning
compressor automatically cycles when needed to cool
the air. In cold weather, when the system senses the
need for heat, the airflow will be directed out the floor
outlets. As the interior temperature approaches a desired
setting, the blower speed will decrease. To maintain
interior comfort, the airflow may move to the instrument
panel air outlets and floor outlets (bi
-level mode). On
bright sunny days in cold weather, the airflow may come
out of the air conditioning outlets (AC mode) to
maintain comfort and prevent stuffiness.
If your vehicle is sitting out on a hot day and you have
it set on AUTO, the air will first flow out the floor air
outlets for a few seconds. That is normal. This is to
expel hot air from the air outlets. As the air is cooled,
the airflow will move through the air conditioning
outlets. If you start your vehicle with the fan setting on
HI, it will skip the air conditioning purge.
To avoid blowing cold air in cold weather, the
system will delay turning on the fan until warm air is
available. The length of delay depends on the outside
air temperature, engine coolant temperature or the
time since the engine was last started. As the coolant
warms up, the blower fan speed will gradually increase
and air will flow from the heater outlets, with some
airflow to the windshield to prevent fogging under
most normal conditions.

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3-10 Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
With the digital cluster climate control panel, press the
AUTO/ECON button to assist in cooling air and in
maintaining proper airflow. Adjust the temperature to a
comfortable setting by pressing the blue button to cool
your vehicle and pressing the red button to warm your
vehicle. Press the fan button arrows up or down to adjust
the fan speed.
If your vehicle has a console climate control panel
(which is standard with the analog cluster), press the AC
button or the TEMP/AUTO knob to turn the system on.
The system will cool and dehumidify the air inside the
vehicle. Also while in the AUTO mode, the system will
use recirculation as necessary to cool the air. You may
also need to adjust the interior temperature and the fan
speed as needed.
When the air conditioner is on, you may sometimes
notice slight changes in your vehicle's engine speed
and power. This is normal because the system is
designed to cycle the compressor on and off to
keep the desired temperature.
Heating
With the digital cluster climate control panel, press the
AUTO/ECON button to direct airflow and to help save
fuel. Adjust the temperature, if necessary, by pressing
the blue button to decrease temperature and pressing the
red button to increase temperature. Also remember to
adjust the fan speed by pressing the up or down arrow.
If your vehicle has a console climate control panel
(which is standard with the analog cluster), press the
MODE button to select heater. Adjust the interior
temperature to a comfortable level and if the fan speed
needs adjusting, press the up or down arrow.
With each system, outside air will be brought in and sent
through the floor, air conditioning or bi
-level outlets
(depending on the condition). The heater works best if
you keep your windows closed while using it.
Defogging and Defrosting
On cool, humid days, use defog (digital cluster climate
control panel only) to keep the windshield and side
windows clear. Use defrost to remove fog or ice from
the windshield quickly in extremely humid or
cold conditions.

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Audio Systems
Your Cadillac audio system has been designed to operate
easily and give years of listening pleasure. You will get
the most enjoyment out of it if you acquaint yourself
with it first. Find out what your audio system can do
and how to operate all its controls, to be sure you're
getting the most out of the advanced engineering that
went into it.
Setting the Clock
Press and hold HR or MN until the time display begins
to change. Release the button as you get close to the
correct time. The time may be set anytime the clock is
displayed. There is a two
-second delay before the clock
goes into time
-set mode.
AM-FM Stereo with Cassette Tape Player
Playing the Radio
PWR/VOL: Press this knob lightly to turn the system
on. Press the knob again to turn the system off. To
increase volume, turn the knob clockwise. Turn it
counterclockwise to decrease volume. The volume level
will appear on the display.
HR or MN: Display the time with the ignition off by
pressing this button.
DSPL: Press this button to display the radio station
being played.

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Finding a Station
BAND: Press this button to select AM, FM1 or FM2.
SEEK
-TUNE: Press and release this button to seek to the
next higher or lower radio station. Pressing and holding
this button until a chime sounds puts the radio in a tune
mode. In this mode, higher or lower radio stations are
advanced to in small increments until the SEEK
-TUNE
button is released. Tuning stops when you release this
button. If you press and hold the SEEK
-TUNE button
again within five seconds of being in the tune mode,
tuning will continue. Waiting longer than five seconds
places the radio back in the seek mode.
SCAN: Press this button and SCAN will appear on the
display. Use SCAN to listen to stations for a few
seconds. The radio will go to a station, stop for a few
seconds, then go on to the next station. Press this button
again to stop scanning.
PUSHBUTTONS: The six numbered pushbuttons let
you return to your favorite stations. You can set up to
18 stations (six AM, six FM1 and six FM2). Just:
1. Turn the radio on.2. Press BAND to select AM, FM1 or FM2.
3. Tune in the desired station.
4. Press and hold one of the six numbered buttons for
more than two seconds until you hear a beep.
Whenever you press that numbered button for less
than two seconds, the station you set will return.
5. Repeat the steps for each pushbutton.
When battery power is removed and later applied, you
will not have to reset your radio presets because the
radio remembers them.
PRESET SCAN: Press and hold SCAN for two to
three seconds until PRESET SCAN appears on the
display to listen to each of your preset stations for a
few seconds (factory presets which have not been
reprogrammed with your stations will be ignored). The
radio will go to the first preset station stored on your
pushbuttons, stop for a few seconds, then go on to the
next preset station. Press SCAN again to stop scanning.
If a preset station has weak reception, the radio will not
stop at the preset station.

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REV: Press the left arrow to rewind the tape rapidly.
The radio will play while the tape reverses and REV
will appear on the display. You may use your station
pushbuttons to tune to another radio station while in
REV mode. Press the left arrow again to return to
playing speed.
FF: Press the right arrow to fast forward to another part
of the tape. The radio will play while the tape advances
and FF will appear on the display. You may use your
station pushbuttons to tune to another radio station
while in FF mode. Press the right arrow again to
return to playing speed.
SEEK
-TUNE: Press the right arrow to seek to the next
selection on the tape. Press the left arrow to search for
the previous selection on the tape (REP will appear on
the display). Your tape must have at least three seconds
of silence between each selection for SEEK
-TUNE to
work. The sound will mute while seeking.
SCAN: Press this button. SCAN FF will appear on the
display until the next selection is found and then SCAN
PLAY will appear on the display. Use SCAN to listen to
selections for a few seconds. The tape will go to a
selection, stop for a few seconds, then go on to the next
selection. Press this button again to stop scanning.
SIDE: Press this button to change the side of the tape
that is playing. (PLAY shows on the display.)SOURCE: Press this button to select a source. If no cassette
tape is in the tape player, CASS appears on the display and
then the radio station appears briefly. The display then
reverts back to showing the time of day. Press this
button again or press BAND to switch back to the radio.
EJECT: Press the upward triangle button to remove
a tape. The radio will play. Eject may be activated with
the radio off. Cassette tapes may be loaded with the radio
off but they will not start playing until the PWR button is
pressed. Press PWR or turn the ignition off to stop the
cassette tape player. The tape will stay in the player and
resume play at the point where it stopped.
CLN: If this message appears on the display, the
cassette tape player needs to be cleaned. It will still play
tapes, but you should clean it as soon as possible to
prevent damage to the tapes and player. See ªCare of
Your Cassette Tape Playerº in the Index. After you clean
the player, press and hold the eject button for five
seconds to reset the CLN indicator. The radio will
display
--- to show the indicator was reset.
Your cassette tape player automatically reduces
background noise from tapes encoded with Dolby NR.
Dolby Noise Reduction is manufactured under a license
from Dolby Laboratories Licensing Corporation. Dolby
and the double
-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.

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While the tape is playing, use the VOL, TONE, LEVEL,
and SPEAKER controls just as you do for the radio.
Other controls may have different functions when a tape
is inserted. The display will show an underlined tape
symbol. TAPE PLAY will appear on the display when a
tape is playing, with an arrow to indicate which side of
the tape is playing.
If an error occurs while trying to play a cassette tape, it
could be that:

The cassette tape is tight and the cassette player
cannot turn the hubs of the tape. Hold the cassette
tape with the open end down and try turning the right
hub counterclockwise with a pencil. Flip the tape
over and repeat. If the hubs do not turn easily, your
cassette tape may be damaged and should not be
used in the player. Try a new tape to be sure your
player is working properly.

The cassette tape is broken. (Check to see if your
tape is broken. Try a new tape.)
RW: Press the left arrow to rewind the tape rapidly. The
radio will play while the tape rewinds. You may use
your station pushbuttons to tune to another radio station
while in RW mode. Press the left arrow again to return
to playing speed.FF: Press the right arrow to fast forward to another part
of the tape. The radio will play while the tape advances.
You may use your station pushbuttons to tune to another
radio station while in FF mode. Press the right arrow
again to return to playing speed.
TUNE
-SEEK: When this button is pressed, it has two
positions. This button works the same, whether it is
pressed to the first or second position. Press this button
to seek to the next or previous selection on the tape.
Your tape must have at least three seconds of silence
between each selection for TUNE
-SEEK to work. The
sound will mute while seeking.
SCAN: Press this button to listen to selections for a few
seconds. The tape will go to a selection, stop for a few
seconds, then go on to the next selection. Press this
button again to stop scanning.
SIDE: Press this button to change the side of the tape
that is playing.
EJECT: Press the upward triangle button to the
right of the cassette tape player to remove a tape. The
radio will play. Eject may be activated with the radio off
and/or the ignition off.