wheel CADILLAC DTS 2009 1.G Owner's Guide

CAUTION: (Continued)

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.
The ACCs are located on the steering wheel.The cruise control buttons are located on left side of the
steering wheel.](On):Press to turn the system on.
+ Res (Resume/Accelerate):Press to make the
vehicle resume to a previously set speed or to increase
the set speed when ACC is already active.
Set– :Press to set the speed or to decrease the set
speed when ACC is already active.
[(Cancel):Press to cancel ACC.
+GAP (Increase Following Distance):Press to
increase the distance between your vehicle and other
vehicles.
−GAP (Decrease Following Distance):Press to
decrease the distance between your vehicle and other
vehicles.
ACC will not work if the master cylinder brake uid level
is low.
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Engaging ACC With the Set Button
{CAUTION:
If you leave your Adaptive Cruise Control switch
on when you are not using cruise, you might hit a
button and go into cruise when you do not want
to. You could be startled and even lose control.
Keep the Adaptive Cruise Control switch off until
you want to use cruise control.
The set speed is selected by the driver. This is the
speed your vehicle will travel if there is no vehicle
detected in its path.
To set ACC, do the following:
1. Press the
]button.
2. Get up to the speed desired.
3. Press in the SET– button and release it.
4. Take your foot off the accelerator pedal.
Once ACC is set, it may immediately apply the brakes if
it detects a vehicle ahead is too close or moving slower
than your vehicle.The on symbol is located on the display at the top of the
instrument panel to the right of the driver. When the on
symbol is lit on the display, it indicates that ACC is active.
A message on the DIC will also display when ACC is
set. SeeDIC Warnings and Messages on page 3-73.
Keep in mind speed limits, surrounding traffic speeds,
and weather conditions when adjusting your set speed.
If the vehicle is in ACC when the traction control system
begins to limit wheel spin, the ACC will automatically
disengage. SeeTraction Control System (TCS) on
page 4-6andStabiliTrak
®System on page 4-6. When
road conditions allow you to safely use it again, the ACC
can be turned back on.
Increasing Set Speed While Using ACC
There are two ways to increase the set speed:
Use the accelerator to get to the higher speed.
Press the SET– button and then release the
button and the accelerator pedal. The vehicle
will now cruise at the higher speed.
Press the +RES button. Hold it there until the
desired set speed is displayed on the Driver
Information Center (DIC), then release the switch.
To increase the set speed in very small amounts,
move the switch briey to +RES. Each time this is
done, the set speed increases by 1 mph (1 km/h).
3-22

Your vehicle will not reach the set speed until the
system determines there is not a vehicle in front of you.
At that point, your vehicle speed will increase to the
set speed.
Decreasing Set Speed While Using ACC
Press the SET– button until you reach the lower speed
desired, then release it.
To slow down in very small amounts, briey press the
SET– button. Each time this is done, the set speed
decreases by 1 mph (1 km/h) slower.
Resuming a Set Speed
Suppose the ACC is set at a desired speed and then
the brakes are applied. This will turn off the ACC.
But it does not need to be reset.
Once the vehicle speed reaches about 25 mph (40 km/h)
or more, press the +RES button. ACC will be engaged
with the previously chosen set speed.
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 shows the current follow distance setting on
the DIC. The current follow distance setting will be
maintained until it is changed.
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 ACC allows, disengage
the system and drive manually.
3-23

Erasing Set Speed Memory
Press the ACC button or turn the ignition off.
Other Messages
There are three additional messages that may appear
on the DIC. They are SERVICE RADAR CRUISE,
RADAR CRUISE NOT READY and CLEAN RADAR.
These messages will appear to indicate a problem
with the ACC. SeeDIC Warnings and Messages
on page 3-73for more information.
Cleaning the System
The radar can become blocked by snow, ice, or dirt.
If so, you may need to turn off the engine and clean
the lens. Remember, do not use ACC in icy conditions,
or when visibility is low, such as in fog, rain or snow.
The emblem/lens is located in the center of the grille.
To clean the emblem/lens, wipe the surface with a soft
cloth. After cleaning the emblem/lens, try to engage the
ACC. If you are unable to do so, see your dealer/retailer.
Exterior Lamps
The exterior lamps control
is located on the instrument
panel to the left of the
steering wheel.
It controls the following systems:
Headlamps
Taillamps
Parking Lamps
License Plate Lamps
Instrument Panel Lights
Fog Lamps
3-29

There is also an interior
temperature sensor
located next to the steering
wheel that measures the
temperature of the air
inside the 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
startup, the displayed temperature will not change
until the following occurs:
Vehicle speed is above 10 mph (16 km/h) for
5 minutes.
Vehicle speed is above 32 mph (51 km/h) 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.
3-45

Outlet Adjustment
For the front outlets, use the thumbwheel located below
each outlet to change the direction of the airow. Use the
thumbwheel located next to the outlets to shut the airow
or to open the outlets and re-direct the air.
For the rear outlets, slide the lever left or right and up or
down to change the direction of the airow.
Operation Tips

Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the ow of air into your vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
Rear Climate Control System
For vehicles with a rear climate control system, the rear
seat passengers can adjust the direction of the airow,
fan speed and temperature for the rear seating area.
This system also works with the main climate control
system in the vehicle.
The rear climate control system is located on the back
of the center console.
A. Display
B. Fan ControlC. Temperature Control
D. Air Delivery Mode
Control
3-46

Traction Control System (TCS)
Warning Light
This warning light comes
on briey while starting the
engine.
If it does not, have the vehicle serviced by your
dealer/retailer. If the system is working normally the
indicator light will then go off.
If it stays on, or comes on while driving, there may
be a problem with the traction control system and the
vehicle needs service. When this warning light is on,
the system will not limit wheel spin.
If the traction control system warning light comes on
and stays on when the system is turned on, the vehicle
needs service. SeeTraction Control System (TCS)
on page 4-6for more information.
StabiliTrak®Indicator Light
For vehicles with the
StabiliTrak®system, this
light comes on briey while
starting the engine.
If it does not, have the vehicle serviced by your
dealer/retailer. If the system is working normally the
indicator light then goes off.
If the light comes on and stays on while driving, there
could be a problem with the StabiliTrak
®system and the
vehicle might need service. When this warning light is
on, the StabiliTrak
®system is off and does not limit
wheel spin.
The light ashes if the system is active and is working
to assist the driver with directional control of the
vehicle in difficult driving conditions.
SeeStabiliTrak
®System on page 4-6for more
information.
3-58

Here are a few situations that may occur with the fuel
gage. All of these situations are normal and do not
indicate that anything is wrong with the fuel gage:
At the gas station the gas pump shuts off before the
gage reads full.
The gage may change when the vehicle is turning,
stops quickly or accelerates quickly.
It takes a little more or less fuel to ll the tank
than the gage indicated. For example, the gage
may have indicated that the tank was half full,
but it actually took a little more or less than half
the tank’s capacity to ll the tank.
Driver Information Center (DIC)
The Driver Information Center (DIC) gives you the status
of many of your vehicle’s systems. The DIC is also used
to display warning/status messages. All messages will
appear in the DIC display located at the bottom of the
instrument panel cluster, below the tachometer and
speedometer. The DIC buttons are located on the
instrument panel, to the left of the steering wheel.
The DIC comes on when the ignition is on. After a short
delay, the DIC will display the information that was
last displayed before the engine was turned off.
The top line of the DIC display shows the vehicle
system information and the warning/status messages.
The bottom line of the DIC display shows the odometer
on the left side. The bottom line of the DIC display
also shows a digital speedometer on the right side.
If a problem is detected, a warning message will appear
on the display. Be sure to take any message that
appears on the display seriously and remember that
clearing the message will only make the message
disappear, not correct the problem.
3-67

DIC Operation and Displays
The Driver Information
Center (DIC) has different
displays which can be
accessed by pressing the
DIC buttons located on
the instrument panel, to the
left of the steering wheel.
3Trip/Fuel:Press this button to scroll through the
trip and fuel displays. See “Trip/Fuel Display Menu Items”
following for more information on these displays.
TVehicle Information:Press this button to scroll
through the vehicle information displays. See “Vehicle
Information Display Menu Items” following for more
information on these displays.
UCustomization:Press this button to scroll through
each of the customization features. SeeDIC Vehicle
Customization on page 3-86for more information on
the customization features.
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.
3-68

SERVICE SUSPENSION SYS (System)
This message displays when the magnetic ride
control or automatic leveling control system is not
operating properly. Have your vehicle serviced by
your dealer/retailer.
SERVICE THEFT DETERRENT SYSTEM
This message displays when there is a problem with
the theft-deterrent system programmed in the key. A fault
has been detected in the system which means that the
system is disabled and it is not protecting the vehicle.
The vehicle usually restarts; however, you may want to
take the vehicle to your dealer/retailer before turning off
the engine. SeePASS-Key
®III+ Electronic Immobilizer
Operation on page 2-23for more information.
SERVICE TIRE MONITOR SYSTEM
On vehicles with the Tire Pressure Monitor System
(TPMS), this message displays if a part on the TPMS
is not working properly. The tire pressure light
also ashes and then remains on during the same
ignition cycle. SeeTire Pressure Light on page 3-60.
Several conditions may cause this message to appear.
SeeTire Pressure Monitor Operation on page 5-61for
more information. If the warning comes on and stays
on, there may be a problem with the TPMS, see your
dealer/retailer.
SERVICE TRACTION CONTROL
This message displays when there is a problem with the
Traction Control System (TCS). When this message is
displayed, the system will not limit wheel spin. Adjust your
driving accordingly. See your dealer/retailer for service.
SeeTraction Control System (TCS) on page 4-6for more
information.
SERVICE TRANSMISSION
This message displays when there is a problem with the
vehicle’s transmission. Have your vehicle serviced by
your dealer/retailer.
SERVICE VEHICLE SOON
This message displays when a non-emissions related
malfunction occurs. Have your vehicle serviced by your
dealer/retailer as soon as possible.
SET SPD (Speed)
If your vehicle has Adaptive Cruise Control (ACC),
this message displays whenever the cruise control is
set. First, the “CRUISE SET TO XXX MPH (km/h)”
message appears. After a few seconds, the “CRUISE
SET TO XXX MPH (km/h)” message clears and the
message “SET SPD XX” displays at the bottom of the
DIC. See “CRUISE SET TO XXX MPH (km/h)” earlier in
this section andAdaptive Cruise Control on page 3-19
for more information.
3-82