2008 CADILLAC STS Owners Manual

The set speed is selected by the driver. This is the
speed you will travel if there is no vehicle detected
in your path.
To set Adaptive Cruise Control, do the following:
1. Make sure the Head-Up Display (HUD) is on and
properly adjusted. You cannot engage Adaptive
Cruise Control unless the HUD is on. SeeHead-Up
Display (HUD) on page 3-43for more information.
2. Move the switch to the on position.
3. Get up to the desired speed.
4. Press in the set button at the end of the lever
and release the button.
5. Take your foot off the accelerator pedal.
Once Adaptive Cruise Control is set, it might
immediately apply the brakes if it detects a vehicle
ahead that is too close or moving slower than
your vehicle.This symbol appears on the
Head-Up Display (HUD)
to indicate that Adaptive
Cruise Control is active.
The number indicates
the set speed.
SeeHead-Up Display (HUD) on page 3-43for more
information.
Make sure the set speed is visible on the HUD so you
know the speed your vehicle will accelerate to if a
vehicle is not detected in your path. 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 4-6,StabiliTrak
®System on page 4-8or
Enhanced StabiliTrak®on page 4-9. When road
conditions allow you to safely use it again, you can
turn the Adaptive Cruise Control back on.United States version
shown, Canada similar
3-23

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 at the end of the lever,
then release the button and the accelerator pedal.
You will now cruise at the higher speed.
Move the Adaptive Cruise Control switch from on to
resume/increase. Hold it there until the desired set
speed is displayed in the HUD, then release the
switch. To increase your set speed in very small
amounts, move the switch briey to resume/increase.
Each time this is done, your vehicle set speed
increases by about 1 mph (1.6 km/h).
Your vehicle will not reach the set speed until the system
determines there is no vehicle in front of you. At that
point, your vehicle speed will increase to the set speed.
Decreasing Set Speed While Using
Adaptive Cruise Control
Press in the set/decrease button on the end of the lever
until you reach the lower desired speed, then release
the button.
To slow down in very small amounts, briey press the
set/decrease button. Each this is done, your set speed
will be 1 mph (1.6 km/h) slower.
Resuming a Set Speed
If you apply the brakes while the Adaptive Cruise
Control is at a set speed, this disengages the Adaptive
Cruise Control. But it does not need to be reset.
Once the vehicle reaches about 30 mph (48 km/h) or
more, move the Adaptive Cruise Control switch briey
from on to resume/increase. Adaptive Cruise Control
will be engaged with the speed previously selected.
3-24

Selecting the Follow Distance (GAP)
When the system detects a slower moving vehicle, it will
adjust your vehicle’s speed and maintain the following
distance (gap) selected.
Use the GAP button on
the steering wheel to
adjust the follow distance
between your vehicle
and other vehicle’s.
Press the top of the button to increase the distance
or the bottom of the button to decrease the distance.
The rst button press shows the current follow distance
setting on the HUD. The current following distance
setting is 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 varies based on vehicle
speed. The faster the vehicle speed the further back you
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 following
distance farther than Adaptive Cruise Control allows,
disengage the system and drive manually.
A graphic on the HUD
indicates the selected
following distance.
This picture shows a
maximum follow distance.
The vehicles will move closer together as you select
a smaller following distance.
United States version
shown, Canada similar
3-25

Alerting the Driver
The alert symbol ashes
on the HUD and a
warning beep sounds
when driver action
is required.
Driver action is required when:
Adaptive Cruise Control cannot apply sufficient
braking because you are approaching a vehicle
too rapidly.
The vehicle speed drops below about
25 mph (40 km/h).
A temporary condition prohibits Adaptive Cruise
Control from operating. SeeDIC Warnings and
Messages on page 3-80for more information.
A malfunction is detected in the system.
SeeDIC Warnings and Messages on page 3-80
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.
3-26

Approaching and Following a Vehicle
The vehicle ahead
symbol only appears
on the HUD when a
vehicle ahead 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 speed to follow the
vehicle in front at the selected following distance.
Your 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 come on.
It may feel or sound different than if you were
applying the brakes yourself. This is normal.
3-27

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 25 mph (40 km/h) while
following a vehicle ahead, Adaptive Cruise Control
will begin to disengage. The driver alert symbol on
the HUD 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.
3-28

Deactivation When Head-Up Display
is Turned Off
If the HUD is turned off when Adaptive Cruise Control
is engaged, it will begin to disengage. A warning
beep sounds and the message RADAR CRUISE NOT
READY appears on the Driver Information Center (DIC).
SeeDIC Warnings and Messages on page 3-80for
additional information. If Adaptive Cruise Control
was braking when the HUD is turned off, the braking
will continue briey.
Passing a Vehicle/Adaptive Cruise Control
Override
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 PEDAL APPLIED
ACC OVERRIDE message will appear on the HUD.
SeeHead-Up Display (HUD) on page 3-43for additional
information. Once you pass the vehicle and remove
your foot from the accelerator pedal, Adaptive Cruise
Control returns to normal operation and the brakes
can be applied, 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.
3-29

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 might operate differently in a
sharp curve. It might reduce your speed if the curve
is too sharp.When following a vehicle and entering a curve, Adaptive
Cruise Control could lose track of the vehicle in your
lane and your vehicle could accelerate. When this
happens, the vehicle ahead symbol will not appear
on the HUD.
3-30