2007 CADILLAC DTS PROFESSIONAL change time

{CAUTION:
On winding roads, Adaptive Cruise
Control may not detect a vehicle
ahead. You could crash into a vehicle
ahead of you. Do not use Adaptive
Cruise Control on winding roads.
Adaptive Cruise Control may not have
time to slow your vehicle enough to
avoid a crash when you are driving
in conditions where vehicles may
suddenly slow or stop ahead of you,
enter your lane, or cross your vehicle’s
path. If you are driving in these
conditions, do not use Adaptive Cruise
Control. The warning beep and alert
symbol may indicate that you are
driving in conditions where Adaptive
Cruise Control should not be used. See
“Alerting the Driver” in this section.
CAUTION: (Continued)
CAUTION: (Continued)

On slippery roads, fast changes in tire
traction can cause needless wheel
spinning, and you could lose control.
Do not use cruise control on slippery
roads.
When weather limits visibility, such as
when in fog, rain, or snow conditions,
Adaptive Cruise Control performance
is limited. There may not be enough
distance to adapt to the changing
traffic conditions. Do not use cruise
control when visibility is low.
181

Selecting the Follow Distance (GAP)
When the system detects a slower moving vehicle,
it will adjust your vehicle’s speed and maintain
the follow distance (gap) you select.
Use the plus and minus buttons on the steering
wheel to adjust the follow distance.
Press the plus button to increase the distance
or the minus button to decrease the distance.
The rst button press will show you the current
follow distance setting on the DIC. Your current
follow distance setting will be maintained until you
change it.There are six follow distances to choose from.
The follow distance selection ranges from near
to far (one second to two seconds follow time).
The distance maintained for a selected follow
distance will vary based on vehicle speed.
The faster the vehicle speed the further back
your vehicle will follow. Consider traffic and
weather conditions when selecting the follow
distance. The range of selectable distances may
not be appropriate for all drivers and driving
conditions. If you prefer to travel at a follow
distance farther than Adaptive Cruise Control
allows, disengage the system and drive manually.
185

Automatic Operation
AUTO9(Automatic Fan):When this position
is selected on the fan control, the system will
adjust the fan speed. If the OnStar
®system
is activated when this position is selected,
the climate control fan speed will lower.AUTO (Automatic Mode):
1. Turn the fan control to the AUTO position.
2. Turn the mode control to the AUTO position.
3. Adjust the temperature to a comfortable
setting between 68°F (21°C) and 78°F (26°C).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool
any faster. In cold weather, the system will start
at reduced fan speeds to avoid blowing cold air
into your vehicle until warmer air is available.
The system will start out blowing air at the oor
but may change modes automatically as the
vehicle warms up to maintain the chosen
temperature setting. The length of time needed
to warm the interior will depend on the outside
temperature and temperature of the vehicle.
4. Wait 20 to 30 minutes for the system to
stabilize in order for the system to regulate
automatically. Then adjust the temperature
as necessary to nd your comfort setting.
Do not cover the solar sensor located in the
center of the instrument panel near the windshield.
For more information on the solar sensor, see
“Sensors” later in this section.
Dual Climate Control System for Vehicles with
Rear Climate Control
211

After the vehicle is started, the display will
show the interior temperature settings and the
outside temperature.
If the AUTO position is selected on the fan or mode
control, the system will automatically control the air
conditioning compressor. The A/C compressor will
run automatically even at cool outside temperatures
in order to dehumidify the air. The A/C indicator
light will be lit when the system is operating
automatically, even at near freezing outside
temperatures. Press the A/C button on the fan
control to turn off the A/C. For improved window
clearing performance in defog or defrost modes,
the A/C compressor will run automatically.
h(AUTO RECIRCULATION):If the AUTO
position is selected on either the fan or mode
control, the system will automatically control the air
inlet to supply fresh outside air or recirculate the
interior air to cool the car faster. The indicator light
on the recirculation button will light whenever the
system switches to recirculation. You may force
outside air by pressing the recirculation button
when the light is lit. For vehicles without rear climate
controls, press the outside air button to force
outside air. The next time AUTO fan or mode is
selected, the air inlet will reset back to AUTO
operation.
Manual Operation
9(Fan):Turn the left control either to the left or
right to adjust the fan speed. Turning this control
completely counterclockwise will turn on the
automatic fan operation. Turning this control to the
“O” position will turn the climate control system off.
If the airow seems low when the fan speed is at
the highest setting, the passenger compartment air
lter may need to be replaced. SeePassenger
Compartment Air Filter on page 220.
9(Off):Turn the left control to this position to
turn the entire climate control system off.
To change the current mode, select one of the
following positions using the right control:
AUTO:Turn the control to this position to turn on
the automatic delivery mode operation.
F(Vent):Turn the control to this mode to direct
air to the instrument panel outlets.
*(Bi-Level):Turn the control to this mode to
direct approximately half of the air to the instrument
panel outlets and most of the remaining air to the
oor outlets. In automatic operation, cooler air is
directed to the upper outlets and warmer air to the
oor outlets.
212

VSet/Reset:Press this button to reset certain
DIC features and to acknowledge DIC warning
messages and clear them from the DIC display.
yzMenu Up/Down:Press this button to scroll
up and down the menu items.
Trip/Fuel Display Menu Items
3
(Trip/Fuel):The following display menu
items can be displayed by pressing the trip/fuel
button:
TRIP A or TRIP B
These displays show the current distance traveled
since the last reset for each trip odometer in either
miles (mi) or kilometers (km). Both odometers can
be used at the same time. Each trip odometer can
be reset to zero separately by pressing and holding
the set/reset button for a few seconds while the
desired trip odometer is displayed.
FUEL RANGE
This display shows the approximate number
of remaining miles (mi) or kilometers (km) you can
drive without relling the fuel tank. This estimate
is based on the current driving conditions and
will change if the driving conditions change.
For example, if you are driving in traffic and
making frequent stops, the display may read
one number, but if you enter the freeway,
the number may change even though you still
have the same amount of fuel in the fuel tank.
This is because different driving conditions
produce different fuel economies. Generally,
freeway driving produces better fuel economy
than city driving.
Once the range drops below an estimated
40 miles (64 km) remaining, the display will
show FUEL RANGE LOW.
If your vehicle is low on fuel, the FUEL LEVEL
LOW message will be displayed. See “FUEL
LEVEL LOW” underDIC Warnings and Messages
on page 246for more information.
241

AVERAGE ECONOMY (AFE)
This display shows the approximate average miles
per gallon (mpg) or liters per 100 kilometers
(L/100 km). This number is calculated based on
the number of mpg (L/100 km) recorded since
the last time this display was reset. To reset this
display, press the set/reset button. The display will
return to zero.
INST (Instantaneous) ECONOMY (IFE)
This display shows the current fuel economy
in either miles per gallon (mpg) or liters per
100 kilometers (L/100 km). This number reects
only the fuel economy that the vehicle has right now
and will change frequently as driving conditions
change. Unlike average economy, this display
cannot be reset.
FUEL USED
This display shows the number of gallons (gal) or
liters (L) of fuel used since the last reset of this
display. To reset this display, press the set/reset
button. The display will return to zero.
TIMER ON/OFF
This display can be used like a stopwatch. You can
record the time it takes to travel from one point to
another. To access the timer, press the trip/fuel
button until 00:00:00 TIMER OFF displays.
To turn on the timer, press the set/reset button
until TIMER ON displays. The timer will then start.
To turn off the timer, press the set/reset button
again until TIMER OFF displays. The timer
will stop and display the end timing value.
To reset the timer, press and hold the set/reset
button after the timer has been stopped.
The display will return to zero.
AVERAGE SPEED
This display shows the average speed of the
vehicle in either miles per hour (mph) or kilometers
per hour (km/h). This average is calculated based
on the various vehicle speeds recorded since the
last reset of this display. To reset this display, press
the set/reset button. The display will return to zero.
242

BATTERY VOLTAGE
This display shows the current battery voltage.
If the voltage is in the normal range, the value
will display. For example, the display may read
BATTERY VOLTAGE 13.2 VOLTS. If the voltage
is low, the display will show LOW. If the voltage is
high, the display will show HIGH. Your vehicle’s
charging system regulates voltage based on the
state of the battery. The battery voltage may
uctuate when viewing this information on the DIC.
This is normal. SeeCharging System Light on
page 229for more information.
If there is a problem with the battery charging
system, the DIC will display a message. SeeDIC
Warnings and Messages on page 246and
Electric Power Management on page 201for
more information.
Blank Display
This display shows no information.
Vehicle Information Display Menu
Items
T
(Vehicle Information):The following display
menu items can be displayed by pressing the
vehicle information button:
OIL LIFE REMAINING
If the vehicle has this display, it shows the
estimated oil life remaining. If you see 99% OIL
LIFE REMAINING on the display, that means that
99% of the current oil life remains.
When the oil life is depleted, the CHANGE ENGINE
OIL SOON message will appear on the display.
You should change the oil as soon as possible.
In addition to the engine oil life system monitoring
the oil life, additional maintenance is recommended
in the Maintenance Schedule in this manual. See
Scheduled Maintenance on page 465andEngine
Oil on page 365.
Remember, you must reset the OIL LIFE yourself
after each oil change. It will not reset itself. Also, be
careful not to reset the OIL LIFE accidentally at any
time other than when the oil has just been changed.
243

CHANGE ENGINE OIL SOON
This message displays when service is required
for your vehicle. See your dealer. SeeEngine
Oil on page 365andScheduled Maintenance on
page 465for more information.
When you reset the CHANGE ENGINE OIL
SOON message by clearing it from the display,
you still must reset the engine oil life system
separately. For more information on resetting
the engine oil life system, seeEngine Oil
Life System on page 368.
CHECK TIRE PRESSURE
This message displays when the tire pressure in
one of the tires needs to be checked. This message
also displays LEFT FRONT, RIGHT FRONT, LEFT
REAR, or RIGHT REAR to indicate which tire needs
to be checked. You can receive more than one tire
pressure message at a time. To read the other
messages that may have been sent at the same
time, press the set/reset button. If a tire pressuremessage appears on the DIC, stop as soon as you
can. Have the tire pressures checked and set to
those shown on the Tire Loading Information label.
SeeTires on page 402,Loading Your Vehicle on
page 333, andInation - Tire Pressure on
page 411. The DIC display also shows the tire
pressure values for the front and rear tires by
pressing the vehicle information button. SeeDIC
Controls and Displays on page 240. If the tire
pressure is low, the low tire pressure warning light
comes on. SeeLow Tire Pressure Warning Light on
page 231.
CLEAN RADAR
This message displays when the Adaptive Cruise
Control (ACC) system and the Forward Collision
Alert (FCA) system are disabled because the radar
is blocked and cannot detect vehicles in your
path. It may also activate during heavy rain or due
to road spray. To clean the system, see “Cleaning
the System” underAdaptive Cruise Control on
page 179.
247