2000 CADILLAC SEVILLE heating

2-84
HEADLAMPS SUGGESTED - 23: If it's dark
enough outside and the headlamps and Twilight
Sentinel

controls are off, a HEADLAMPS
SUGGESTED message will display on the DIC. This
message informs the driver that turning on the exterior
lamps is recommended even though the Daytime
Running Lamps (DRL) are still illuminated. It has
become dark enough outside to require the headlamps
and/or other exterior lamps. This message will also
appear if the optional Rainsense wiping feature is
on and the Twilight Sentinel

is off.
ICE POSSIBLE
- 13: This message appears when
the outside air temperature is cold enough to create
icy road conditions.
LEFT REAR DOOR AJAR
- 142: The left rear door
is open or ajar when this message appears. The ignition
must be in ON and the transaxle not in PARK (P) for
this message to display. A chime will also sound when
the vehicle's speed is greater than 3 mph (4.8 km/h).
OIL PRESSURE LOW STOP ENGINE
- 35: If this
message appears while the engine is running, stop the
engine and do not operate it until the cause of low oil
pressure is corrected. Severe damage to the engine can
result. A multiple chime will also sound when this
message is displayed.PASSENGER DOOR AJAR
- 141: The passenger's door
is open or ajar when this message appears. The ignition
must be in ON and the transaxle not in PARK (P) for
this message to display. A chime will also sound when
the vehicle's speed is greater than 3 mph (4.8 km/h).
RIGHT REAR DOOR AJAR
- 143: The right rear door
is open or ajar when this message appears. The ignition
must be in ON and the transaxle not in PARK (P) for
this message to display. A chime will also sound when
the vehicle's speed is greater than 3 mph (4.8 km/h).
SERVICE AC SYSTEM
- 14: This message
appears when the electronic sensors that control the air
conditioning and heating systems are no longer working.
Have the climate control system serviced if you notice a
drop in heating and air conditioning efficiency.
SERVICE AIR BAG
- 83: There is a problem with
the supplemental inflatable restraint (air bag) system
when this message appears. Let only a qualified
technician work on your vehicle. See your dealership
for service at once.
SERVICE CHARGING SYS
- 102: This message
will display when a problem with the charging system
has been detected. Have your vehicle serviced at
your dealership.

3-
3-1
Section 3 Comfort Controls and Audio Systems
In this section, you'll find out how to operate the comfort control and audio systems offered with your vehicle.
Be sure to read about the particular systems supplied with your vehicle.
3
-2 Comfort Controls
3
-2 Climate Control Panel
3
-6 Air Conditioning
3
-6 Heating
3
-7 Defrosting and Defogging
3
-7 Rear Window Defogger
3
-8 Ventilation System
3
-10 HVAC Steering Wheel Controls
3
-10 Climate Control Personalization (If Equipped)
3
-11 Audio Systems
3
-11 Setting the Clock
3
-11 AM-FM Stereo with Cassette Tape and
Compact Disc Player
3
-16 AM-FM Stereo with Cassette Tape and
Compact Disc Player with Radio Data Systems
(RDS) and Digital Signal Processing (DSP)
(If Equipped)
3
-25 AM-FM Stereo with Cassette Tape and MiniDisc
Player with Radio Data Systems (RDS) and
Digital Signal Processing (DSP) (If Equipped)3
-34 AM-FM Stereo with Cassette Tape and
Radio Data Systems (RDS) with Digital
Signal Processing (DSP) and Communiport


Infotainment System (If Equipped)
3
-47 Radio Data Systems (RDS) Program
Type (PTY) Selections
3
-48 Navigation/Radio System (Option)
3
-48 CD Adapter Kits
3
-49 Console-Mounted CD Changer (Option)
3
-51 Radio Personalization with Home and Away
Feature (If Equipped)
3
-52 Theft-Deterrent Feature
3
-52 Audio Steering Wheel Controls
3
-53 Understanding Radio Reception
3
-53 Tips About Your Audio System
3
-54 Care of Your Cassette Tape Player
3
-55 Care of Your Compact Discs
3
-55 Care of Your Compact Disc Player
3
-56 Diversity Antenna System

3-3
Passenger's Side Temperature Knob
The right front passenger can control the temperature
of air for both the front passenger and rear seat area.
(The passenger's and driver's knob adjust from 60
F
(16
C) to 90
F (32
C) independent of each other.
It is suggested, however, that the passenger's setting
stay no more than four degrees warmer or cooler in
temperature from the driver's setting.) To turn the
system on, press the passenger's side TEMP knob.
Turn the passenger's side TEMP knob clockwise to
increase the temperature and counterclockwise to
decrease the temperature. Press the passenger's side
TEMP knob again to turn off the passenger's side
system. If the passenger's side is turned off, the driver's
side will control the temperature of the entire vehicle.
Automatic Operation
When the system is set for automatic operation, sensors
will control the air delivery mode. Air will come from
the floor, the instrument panel or windshield outlets.
The fan speed will vary as the system maintains the
selected temperature setting.Be careful not to put anything over the electronic solar
sensors located near the ends of the instrument panel
near the windshield. These sensors are 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 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 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 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 (A/C mode) to maintain
comfort and prevent stuffiness.

3-6 Electronic Solar Sensor
The sensor monitors the sun's solar radiation and is located
near the end of the instrument panel near the windshield.
The climate control panel uses this information to
automatically make the necessary temperature and
airflow adjustments to maintain your comfort. The
climate control system may supply cooler air to one side
of your vehicle, if that side is facing the sun. Be careful
not to put anything over the sensor on top of the
instrument panel.
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. Your A/C
setting may be adjusted automatically or manually.
It may also be set separately on the passenger's side
from the driver's side. See ªClimate Control Panelº
earlier in this section.
Heating
Adjust the interior temperature to a comfortable level
and if the fan speed needs adjusting, press the up or
down arrow. Adjusting the fan speed will cancel the
cold air delay.
Outside air will be brought in and sent through the floor,
air conditioning or bi
-level outlets. The heater works
best if you keep your windows closed while using it.
In automatic operation, your fan will not run at high
speed to minimize warm
-up time.

3-7 Defrosting and Defogging
Use defrost (front) on cool and humid days to keep
the windshield and side windows clear. This setting will
remove fog or ice from the windshield quickly in
extremely humid or cold conditions. If you desire to
have more air on your feet, turn the control to the defog
mode. You may do this by pressing the right or left
arrow on the MODE button.
Press the up or down arrow on the fan button to control
the blower speed. You may also adjust the temperature
by turning the TEMP knob.
The recirculation mode and the A/C OFF message are
not available in the defrost mode.
Rear Window Defogger
The grid lines you see on
the rear window warm the
glass. Press this button to
turn on the rear defogger.With it, the rear window and both outside rearview
mirrors are heated. The light on the button will come
on while the system is activated.
The system will automatically shut off after 10 minutes.
If further defogging is desired, press the button again.
The system will automatically shut off after five minutes
for any cycles after the initial activation.
Note: The lines along the top of the window are for
the diversity antenna and are not intended to defog the
rear window.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid on the rear window.
NOTICE:
Scraping the inside of your rear window could
cut and damage the heating grids. Your warranty
would not cover this damage. Don't put decals
there because you might have to scrape them off.

3-10 HVAC Steering Wheel Controls
Some heating and cooling
controls can be adjusted at
the steering wheel. Other
touch controls operate some
audio controls. See ªAudio
Steering Wheel Controlsº
in the Index.
TEMP: Press the up arrow on the control to increase the
temperature and the down arrow to decrease temperature.
FAN: Press the up arrow on the control to increase the
fan speed and the down arrow to decrease fan speed.
Climate Control Personalization
(If Equipped)
With this feature, your vehicle will recall the latest
climate control settings as adjusted the last time your
vehicle was operated. These settings include the set
temperatures for driver and passenger, air conditioning,
mode and fan speed. (This feature does not recall
recirculation or defrost modes.) This feature allows two
different drivers to store and recall their own climate
control settings. The settings recalled by the climate
control system are determined by which Remote
Keyless Entry (RKE) transmitter (ª1º or ª2º) was
used to enter the vehicle. The number on the back of the
RKE transmitter corresponds to driver 1 or to driver 2.
After any button is pressed on the RKE transmitter or
the key is placed in the ignition, the climate control
settings will automatically adjust to where they were last
set. The settings can also be changed by briefly pressing
buttons 1 or 2 located on the driver's door.

4-37 Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a different
turn signal flasher and/or extra wiring. Check with your
dealer. The arrows on your instrument panel will flash
whenever you signal a turn or lane change. Properly
hooked up, the trailer lamps will also flash, telling other
drivers you're about to turn, change lanes or stop.
When towing a trailer, the arrows on your instrument
panel will flash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind
you are seeing your signal when they are not. It's
important to check occasionally to be sure the trailer
bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you don't shift down,
you might have to use your brakes so much that they
would get hot and no longer work well.
On long uphill grades, reduce speed to 45 to 50 mph
(70 to 90 km/h) and avoid prolonged use of SECOND (2)
gear and engine speeds above 3800 rpm.
Climbing grades steeper than four percent at temperatures
above 90
F (32
C) with a loaded vehicle and trailer is
not recommended. The cooling system may temporarily
overheat. See ªEngine Overheatingº in the Index.
Parking on Hills
CAUTION:
You really should not park your vehicle, with
a trailer attached, on a hill. If something goes
wrong, your rig could start to move. People can
be injured, and both your vehicle and the trailer
can be damaged.
But if you ever have to park your rig on a hill, here's
how to do it:
1. Apply your regular brakes, but do not shift into
PARK (P).
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the
regular brakes until the chocks absorb the load.
4. Reapply the regular brakes. Then shift into
PARK (P) firmly and apply your parking brake.
5. Release the regular brakes.

4-38 When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:

Start your engine;

Shift into a gear; and

Be sure the parking brake has released.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you're
pulling a trailer. See the Maintenance Schedule booklet
for more on this. Things that are especially important
in trailer operation are automatic transaxle fluid (don't
overfill), engine oil, drive belt, cooling system and brake
system. If you're trailering, it's a good idea to review
this information before you start your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
Your cooling system may temporarily overheat during
severe operating conditions. See ªEngine Overheatingº
in the Index.