2007 CADILLAC DTS climate control

AUX:If your vehicle has a rear climate control
system, press this button to turn the rear climate
control fan on for automatic operation. After
the AUX button is pressed, the indicator light
will come on. Press the button again to turn the
auxiliary fan off. SeeRear Climate Control System
on page 218.
#(Air Conditioning):Press the center of the
left control to override the automatic system
and turn the air conditioning system on or off.
When in AUTO, the air conditioning compressor
will come on automatically, as necessary.
The air conditioning system removes moisture from
the air, so you may notice a small amount of water
dripping underneath your vehicle while idling or
after turning off the engine. This is normal.
Sensors
The solar sensor, located in the defrost grille,
middle of the instrument panel, monitors the solar
radiation. Do not cover the solar sensor or the
system will not work properly.
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There is also an interior
temperature sensor
located next to the
steering wheel that
measures the
temperature of the air
inside your vehicle.
There is also an exterior temperature sensor
located behind the front grille. This sensor reads
the outside air temperature and helps maintain
the temperature inside the vehicle. Any cover
on the front of the vehicle could cause a
false reading in the displayed temperature.In order to prevent false temperature readings
at start up, the displayed temperature will
not change until the following occurs:
Vehicle speed is above 10 mph (16 kmh) for
5 minutes.
Vehicle speed is above 32 mph (51 kmh) for
2 and a half minutes.
The climate control system uses the information
from these sensors to maintain your comfort
setting by adjusting the outlet temperature, fan
speed, and the air delivery mode. The system may
also supply cooler air to the side of the vehicle
facing the sun. The recirculation mode will also
be used as needed to maintain cool outlet
temperatures.
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Defogging and Defrosting
Fog on the inside of windows is a result of high
humidity (moisture) condensing on the cool window
glass. This can be minimized if the climate control
system is used properly. There are two modes to
clear fog from your windshield. Use the oor/defog
mode to clear the windows of fog or moisture and
warm the passengers. Use the defrost mode to
remove fog or frost from the windshield more
quickly.
W(Floor/Defog):Turn the control to this mode
to direct approximately half of the air to the
oor outlets and the remaining air is directed to
the side window outlets and to the windshield.
When you select this mode, the system turns
off recirculation and runs the air conditioning
compressor unless the outside temperature is
at or below freezing. The recirculation mode
cannot be selected while in the oor/defog mode.
0(Defrost):Turn the control to this mode to
direct most of the air to the windshield and the
side window outlets. In this mode, the system will
automatically turn off recirculation and run the
air conditioning compressor, unless the outside
temperature is at or below freezing. Recirculation
cannot be selected while in the defrost mode.
Do not drive the vehicle until all the windows
are clear.
For professional vehicles, air will be allowed to
ow through the rear outlets. For quicker defrost,
press the AUX button on the front climate
control system so that the light is not lit.
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Rear Climate Control System
If your vehicle has a rear climate-control system,
the rear-seat passengers can use it to adjust
the direction of the airow, the fan speed and
the temperature for the rear-seating area.
This system also works with the main
climate-control system in your vehicle.
The control panel for this system is located on the
back of the center console.If the AUX button located on the front climate
control panel is pressed, the rear climate control
system will be turned on. The rear system will
operate in automatic mode and the temperature
settings selected for the front climate control panel
will also be selected for the rear passengers.
If the rear passenger would like to adjust the
rear climate control system, they can select
a different temperature and a different mode
or fan speed.
Whenever the rear passengers have adjusted
settings on the rear climate control system,
the AUX light is lit on the front climate control
system. The driver can turn off the auxiliary fan
by pressing the AUX button.
When the front climate control system is turned
off or in defrost mode, the rear climate control
system is turned off. The rear system will turn
back on once another front mode is selected.
For more information on how to use the climate
control system, seeDual Climate Control System
on page 210. For more information on the air
outlets, seeOutlet Adjustment on page 217.
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Automatic Operation
«A ª(Fan):Press this button until AUTO
appears on the display to place the system in
automatic mode. When automatic operation is
active, the system will automatically control the fan
speed. If in auto fan mode, pressing the up arrow
button will cancel automatic operation and places
the system in manual mode. If in auto mode,
pressing the down arrow will turn the rear climate
control system off.
«Nª(Mode):Press the this button until
AUTO appears on the display to place the system
in automatic mode. When automatic operation
is active, the system will automatically control
the air delivery mode.
Manual Operation
«A ª(Fan):Press these up or down arrow
buttons to increase or decrease the fan speed.
«bª(Temperature):Press these up or
down arrow buttons to increase or decrease the
temperature for the rear seat passengers. Once the
rear setting temperature is altered from followingthe front setting temperature, it will no longer follow
changes to the front setting temperature until the
front climate control AUX button resets it.
«Nª(Mode):Press these buttons to change
the air delivery mode. If in AUTO air delivery
mode, pressing the up arrow button will cancel
automatic operation and place the system in
manual mode.
Y(Vent):This mode directs air to the upper
outlets.
%(Bi-Level):This mode directs half the air
to the upper outlets, and the other half to the oor
outlets.
[(Floor):This mode directs the air to the oor
outlets.
For more information on how to use the front
climate control system, seeDual Climate Control
System on page 210.
For more information on the air outlets, seeOutlet
Adjustment on page 217. Be sure to keep the
area under the front seats clear of any objects
so that the air inside of your vehicle can circulate
effectively.
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SERVICE A/C SYSTEM
This message displays when the air delivery mode
door or the electronic sensors that control the air
conditioning and heating systems are no longer
working. Have the climate control system serviced
by your dealer if you notice a drop in heating and air
conditioning efficiency.
SERVICE BATTERY CHARGING
SYSTEM
This message displays when a problem with the
charging system has been detected. The charging
system light also displays on the instrument
panel cluster. SeeCharging System Light on
page 229for more information. Have your vehicle
serviced by your dealer.
SERVICE BRAKE ASSIST
This message displays if there is a problem with the
brake system. The brake system warning light and
the anti-lock brake system warning light may also
be displayed on the instrument panel cluster.
SeeBrake System Warning Light on page 229andAnti-Lock Brake System Warning Light on page 230
for more information. If this happens, stop as soon
as possible and turn off the vehicle. Restart the
vehicle and check for the message on the DIC
display. If the message is displayed or appears
again when you begin driving, the brake system
needs service. See your dealer as soon as
possible. SeeBrakes on page 387for more
information.
SERVICE BRAKE SYSTEM
This message displays if the ignition is on to
inform the driver that the brake uid level is low.
Have the brake system serviced by your dealer as
soon as possible.
SERVICE PARKING ASSIST
If your vehicle has the Ultrasonic Front and Rear
Parking Assist (UFRPA) system, this message
displays if there is a problem with the UFRPA
system. Do not use this system to help you park.
SeeUltrasonic Front and Rear Parking Assist
(UFRPA) on page 202for more information.
See your dealer for service.
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If you get the overheat warning with no sign of
steam, try this for a minute or so:
1. In heavy traffic, let the engine idle in
NEUTRAL (N) while stopped. If it safe to do
so, pull off the road, shift to PARK (P) or
NEUTRAL (N) and let the engine idle.
2. Set the climate controls to the highest heat
setting and fan speed and open the windows
as necessary.
If you no longer have the overheat warning, you
can drive. Just to be safe, drive slower for
about 10 minutes. If the warning does not come
back on, you can drive normally.
If the warning continues, pull over, stop, and park
your vehicle right away.
If there is still no sign of steam, idle the engine for
three minutes while you are parked. If you still
have the warning, turn off the engine and
get everyone out of the vehicle until it cools down.
Also, see “Overheated Engine Protection
Operating Mode” later in this section.
You may decide not to lift the hood but to get
service help right away.Overheated Engine Protection
Operating Mode
If an overheated engine condition exists and the
message ENGINE OVERHEATED STOP ENGINE
is displayed, an overheat protection mode which
alternates ring groups of cylinders helps
prevent engine damage. In this mode, you will
notice a loss in power and engine performance.
This operating mode allows your vehicle to
be driven to a safe place in an emergency. Driving
extended miles (km) and/or towing a trailer in
the overheat protection mode should be avoided.
Notice:After driving in the overheated
engine protection operating mode, to avoid
engine damage, allow the engine to cool before
attempting any repair. The engine oil will be
severely degraded. Repair the cause of coolant
loss, change the oil and reset the oil life
system. SeeEngine Oil on page 365.
379

While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform to
federal safety requirements and additional General
Motors Tire Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specied
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA,
A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured under
controlled conditions on specied government test
surfaces of asphalt and concrete. A tire marked C
may have poor traction performance.Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
Temperature – A, B, C
The temperature grades are A (the highest), B,
and C, representing the tire’s resistance to
the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a
specied indoor laboratory test wheel. Sustained
high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance
which all passenger car tires must meet under
the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel
than the minimum required by law.
Warning:The temperature grade for this tire is
established for a tire that is properly inated
and not overloaded. Excessive speed,
underination, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
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