2008 CADILLAC DTS Owners Manual

To set Adaptive Cruise Control, do the following:
1. Press the
](On) 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 Adaptive Cruise Control 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
Adaptive Cruise Control is active.
A message on the DIC will also display when Adaptive
Cruise Control is set. SeeDIC Warnings and
Messages on page 3-75.
Keep in mind speed limits, surrounding traffic speeds,
and weather conditions when adjusting your set speed.
If your vehicle is in Adaptive Cruise Control when
the traction control system begins to limit wheel spin,
the Adaptive Cruise Control will automatically disengage.
SeeTraction Control System (TCS) on page 4-5and
StabiliTrak
®System on page 4-7. When road conditions
allow you to safely use it again, you may turn the
Adaptive Cruise Control back on.
Increasing Set Speed While Using Adaptive
Cruise Control
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 your set speed in very small amounts,
move the switch briey to +RES. Each time this
is done, your set speed increases by 1 mph (1 km/h).
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.
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Decreasing Set Speed While Using
Adaptive Cruise Control
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, your set speed
decreases by 1 mph (1 km/h) slower.
Resuming a Set Speed
Suppose the Adaptive Cruise Control is set at a desired
speed and then the brakes are applied. This will turn
off the Adaptive Cruise Control. But it does not need to
be reset.
Once you are going about 25 mph (40 km/h) or more,
press the +RES button. Adaptive Cruise Control
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 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.
3-24

Alerting the Driver
The Adaptive Cruise
Control alert symbol is
located on the display at
the top of the instrument
panel to the right of
the driver.
The alert symbol will ash and a warning beep will
sound when driver action may be required. If Adaptive
Cruise Control is engaged, the alert symbol will
ash when:
Adaptive Cruise Control cannot apply sufficient
braking because you are approaching a vehicle
too rapidly.
The vehicle speed drops below about
20 mph (32 km/h).
A temporary condition prohibits Adaptive Cruise
Control from operating. SeeDIC Warnings and
Messages on page 3-75for more information.
A malfunction is detected in the system.
SeeDIC Warnings and Messages on page 3-75
for more information.
SeeDefensive Driving on page 4-2.
{CAUTION:
Adaptive Cruise Control has only limited
braking ability to slow your vehicle. In some
cases, Adaptive Cruise Control may not have
time to slow your vehicle enough to avoid a
collision. Be ready to take action and apply
the brakes yourself. SeeDefensive Driving
on page 4-2.
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Approaching and Following a Vehicle
The Vehicle Ahead symbol
is located on the top of the
instrument panel to the
right of the driver.
The Vehicle Ahead symbol only appears when a vehicle
is detected in your path.
If this symbol does not appear, or disappears briey,
Adaptive Cruise Control will not respond to vehicles you
may see ahead.{CAUTION:
When the Adaptive Cruise Control radar is
blocked by snow, ice, or dirt, it may not detect
a vehicle ahead. Adaptive Cruise Control may
not have time to slow your vehicle enough to
avoid a collision. Do not use Adaptive Cruise
Control when the radar is blocked by snow,
ice, or dirt. Keep your radar clean. See
“Cleaning the System” later in this section.
Adaptive Cruise Control automatically slows your
vehicle down when approaching a slower moving
vehicle. It then adjusts your vehicle speed to follow
the vehicle in front at the selected follow distance.
Your vehicle speed increases or decreases to follow
the vehicle in front of you, but will not exceed the
set speed. It may apply limited braking, if necessary.
When braking is active, your brake lights will come on.
Braking may feel or sound different than if you were
applying the brakes yourself. This is normal.
3-26

Stationary or Very Slow-Moving Objects
{CAUTION:
Adaptive Cruise Control may not detect and
react to stationary or slow-moving vehicles or
other objects ahead of you. You could crash
into an object ahead of you. Do not use
Adaptive Cruise Control when approaching
stationary or slow-moving vehicles or other
objects.
{CAUTION:
Adaptive Cruise Control may not detect and
react to stationary or slow-moving vehicles or
other objects ahead of you. Your vehicle may
accelerate toward objects, such as a stopped
vehicle that suddenly appears after the lead
vehicle changes lanes. Your complete attention
is always required while driving and you
should be ready to take action and apply the
brakes.
Low-Speed Deactivation
If your speed falls below 20 mph (32 km/h) while
following a vehicle ahead, Adaptive Cruise Control will
begin to disengage. The Driver Alert symbol will
ash and the warning beep will sound. The driver must
take action since Adaptive Cruise Control will not
slow the vehicle to a stop.
3-27

Passing a Vehicle/Adaptive Cruise Control
Override
If you need to increase speed to pass a vehicle,
use the accelerator pedal. While you are doing this,
the system will not automatically apply the brakes.
A message will appear on the DIC. SeeDIC Warnings
and Messages on page 3-75. Once you remove
your foot from the accelerator pedal, Adaptive Cruise
Control will return to normal operation and be able
to apply the brakes, if needed.
{CAUTION:
If you rest your foot on the accelerator pedal,
the system will not automatically apply the
brakes. You could crash into a vehicle ahead
of you. Do not rest your foot on the accelerator
pedal when using Adaptive Cruise Control.
Curves in the Road
{CAUTION:
Due to Adaptive Cruise Control limitations in
curves, it may respond to a vehicle in another
lane, or may not have time to react to a vehicle
in your lane. You could crash into a vehicle
ahead of you, or lose control of your vehicle.
Give extra attention in curves and be ready to
use the brakes if necessary. Select an
appropriate speed while driving in curves.
Adaptive Cruise Control may operate differently in a
sharp curve. It may reduce your speed if the curve is
too sharp.
3-28

When following a vehicle and entering a curve,
Adaptive Cruise Control could lose track of the vehicle
in your lane and accelerate your vehicle. When this
happens the Vehicle Ahead symbol will not appear.Adaptive Cruise Control may detect a vehicle that is
not in your lane and apply the brakes.
Adaptive Cruise Control may, occasionally, provide
a driver alert and/or braking that you consider
unnecessary. It could respond to signs, guardrails,
and other stationary objects when entering or exiting
a curve. This is normal operation. Your vehicle does
not need service.
3-29

Highway Exit Ramps
{CAUTION:
Adaptive Cruise Control may lose track of
the vehicle ahead and accelerate up to your
set speed while entering or on highway
exit ramps. You could be startled by this
acceleration and even lose control of the
vehicle. Disengage Adaptive Cruise Control
before entering a highway exit ramp.
Do not use Adaptive Cruise Control while
entering or on exit ramps.
Other Vehicle Lane Changes
If another vehicle enters the same lane as you,
Adaptive Cruise Control will not detect the vehicle
until it is completely in the lane. Be ready to take
action and apply the brakes yourself.
3-30