2010 CADILLAC DTS cruise control

The Forward Collision Alert (FCA) system provides anaudible and visual alert if you approach a vehicletoo quickly that is directly ahead. FCA also provides avisual alert with no audible alert if you are followinganother vehicle much too closely. The FCA alert symbolis located on top of the instrument panel to the rightof the driver. FCA uses the Adaptive Cruise Controlradar to detect a vehicle directly ahead, in your path,within a distance of 328 ft (100 m) and operates atspeeds above 20 mph (32 km/h).
{WARNING:
FCA is only a warning system and does not apply
the brakes. When you are approaching a vehicle
or object too rapidly or when you are following a
vehicle too closely that is ahead of you, FCA may
not provide you with enough time to avoid a
collision. FCA is not designed to warn the driver of
pedestrians or animals. Your complete attention is
always required while driving and you should be
ready to take action and apply the brakes. For
more information, seeDefensive Driving on
page 5-2.
The FCA control is locatedon the steering wheel.
To enable or disable FCA, press the Adaptive CruiseControl button. SeeAdaptive Cruise Control onpage 4-15.
4-7

FCA is enabled when the green light on the button is lit.FCA is disabled when the indicator light is amber.
{WARNING:
•On winding roads, FCA may not detect a
vehicle ahead. You could crash into a vehicleahead of you. Do not rely on FCA onwinding roads.
•When weather limits visibility, such as in fog,
rain, or snow, FCA performance is limited.There may not be enough warning distance tothe vehicle in front of you. Do not rely onFCA in low visibility conditions.
{WARNING:
When FCA is enabled, the Adaptive Cruise
Control switch is on. If you press another Adaptive
Cruise Control button, you might go into cruise
when you do not want to. You could be startled
and even lose control. Be careful not to press
adaptive cruise buttons unless you want to use
cruise control.
Alerting the Driver
The FCA alert symbol willflash and a warning beepwill sound when driveraction may be required.
The alert symbol will flash when:
•Your vehicle is approaching another vehicle too
quickly.
•Your vehicle is following a vehicle ahead of you
much too closely.
SeeDefensive Driving on page 5-2for more information.
Detecting the Vehicle Ahead
The vehicle ahead symbol, located next to the FCAsymbol, will only appear when a vehicle ahead of you isdetected in your path. If this symbol does not appear,or disappears briefly, FCA will not respond to vehiclesyou may see ahead. The symbol may disappear oncurves, highway exit ramps, or hills. Also, when anothervehicle enters the same lane as you, the FCA systemwill not detect the vehicle until it is completely inyour driving lane.
4-8

{WARNING:
When the Adaptive Cruise Control radar is blocked
by snow, ice, or dirt, it may not detect a vehicle
ahead. FCA may not help you avoid a collision
under these conditions. Do not use FCA when the
radar is blocked by snow, ice, or dirt. Keep your
radar clean. See “Cleaning the System” under
Adaptive Cruise Control on page 4-15.
{WARNING:
FCA may not detect and warn soon enough to
stationary or slow-moving vehicles or other objects
ahead of you. You could crash into an object
ahead of you. Do not rely on FCA when
approaching stationary or slow-moving vehicles or
other objects.
Unnecessary Alerts
FCA may occasionally provide alerts that you considerunnecessary. It could respond to a turning vehicleahead of you, guard rails, signs, and other stationaryobjects. This is normal operation, your vehicle does notneed service.
Other Messages
There are three messages that may appear on theDriver Information Center (DIC). They are CLEANRADAR, RADAR CRUISE NOT READY and SERVICERADAR CRUISE. SeeDIC Warnings and Messageson page 4-67.
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 thelens. See “Cleaning the System” underAdaptiveCruise Control on page 4-15.
4-9

Cruise Control
With cruise control, a speed of approximately 40 km/h(25 mph) or more can be maintained without keepingyour foot on the accelerator. Cruise control does not workat speeds below about 40 km/h (25 mph). A cruise controllight appears in the instrument panel cluster when thecruise control is on.
When the brakes are applied, the cruise controlshuts off.
{WARNING:
Cruise control can be dangerous where you
cannot drive safely at a steady speed. So, do not
use the cruise control on winding roads or in
heavy traffic.
Cruise control can be dangerous on slippery roads.
On such roads, fast changes in tire traction can
cause excessive wheel slip, and you could lose
control. Do not use cruise control on slippery roads.
If your vehicle is in cruise control when the TractionControl System (TCS) begins to limit wheel spin,the cruise control automatically turns off. SeeTractionControl System (TCS) on page 5-6. When roadconditions let you safely use it again, the cruise controlcan be turned back on.
Setting Cruise Control
{WARNING:
If you leave your cruise control 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 cruise
control switch off until you want to use cruise
control.
4-12

The cruise control buttonsare located on left side ofthe steering wheel.
I(On):Turns on the cruise control system.
+ RES (Resume/Accelerate):Press to make thevehicle accelerate or resume to a previously set speed.
SET– (Set):Press to set the speed.
[(Cancel):Press to cancel cruise control.
Cruise control will not work if the parking brake is set, orif the master cylinder brake fluid level is low.
If the brakes are applied, the cruise control shuts off.
The cruise light on the instrument panel cluster comeson after the cruise control has been set to the desiredspeed.
1. PressI.
2. Get up to the desired speed.
3. Press the SET– button located on the steeringwheel and release it.
4. Take your foot off the accelerator.
Resuming a Set Speed
Suppose the cruise control is set at a desired speedand then the brakes are applied. This shuts off thecruise control. But it does not need to be reset.
Once the vehicle is traveling approximately 40 km/h(25 mph) or more, press the +RES (resume/accelerate)button to return to the desired preset speed. Thecruise light displays again.
The vehicle returns to and stays at the preset speed. Ifyou press and hold the +RES button, the vehicle speedincreases until the button is released or the brake isapplied. Do not hold in the +RES button, if you do notwant the vehicle speed to increase.
4-13

Increasing Speed While Using Cruise
Control
There are two ways to go to a higher speed:
•Use the accelerator pedal to get to the higher
speed. Press the SET– button, then releasethe button and the accelerator pedal. The vehiclenow cruises at the higher speed.
•Press the +RES button. Hold it there until the
desired speed is reached, and then releasethe button. To increase the vehicle speed in verysmall amounts, briefly press the +RES buttonand then release it. Each time this is done, thevehicle accelerates approximately 1.6 km/h (1 mph).
The accelerate feature only works after the cruisecontrol speed is set by pressing the SET– button.
Reducing Speed While Using Cruise
Control
There are two ways to reduce the vehicle speed whileusing cruise control:
•Press the SET– button until the lower speed
desired is reached, then release it.
•To slow down in very small amounts, push the
SET– button briefly. Each time this is done,the vehicle slows down approximately1.6 km/h (1 mph).
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase the vehicle speed.When you take your foot off the pedal, the vehicleslows down to the previous cruise control speed.
4-14

Using Cruise Control on Hills
How well your cruise control works on hills dependsupon the vehicle speed, load, and the steepness of thehills. When going up steep hills, you might have tostep on the accelerator pedal to maintain the vehicle’sspeed. When going downhill, you might have to brake orshift to a lower gear to keep the vehicle’s speeddown. Applying the brake or shifting into a lower gearends cruise control. If you need to apply the brakeor shift to a lower gear due to the grade of the downhillslope, you might not want to attempt to use thecruise control feature.
Ending Cruise Control
To turn off the cruise control, step lightly on the brakepedal, or press the cancel button on the steering wheel.
Erasing Speed Memory
The cruise control set speed memory is erased whenthe cruise control or the ignition is turned off.
Adaptive Cruise Control
For vehicles with this feature, be sure to read this entiresection before using it.
The system operates on a radio frequency subject toFederal Communications Commission (FCC) Rules andwith Industry Canada.
This device complies with Part 15 of the FCC Rules.Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,including interference that may cause undesiredoperation of the device.
This device complies with RSS-210 of Industry Canada.Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,including interference that may cause undesiredoperation of the device.
Changes or modifications to this system by other thanan authorized service facility could void authorization touse this equipment.
Adaptive Cruise Control (ACC) is an enhancement totraditional cruise control. It allows you to keep cruisecontrol engaged in moderate traffic conditions withouthaving to constantly reset your cruise control.ACC uses radar to detect a vehicle directly ahead inyour path, within a distance of 100 m (330 ft), andoperates at speeds above 40 km/h (25 mph). When it isengaged by the driver, the system can apply limitedbraking or acceleration of the vehicle automatically tomaintain a selected follow distance to the vehicle ahead.Braking is limited to 2.45 m/sec2 (0.25 g’s) ofdeceleration, which is comparable to moderate
4-15

application of the vehicle’s brakes. To disengage ACC,apply the brake. If no vehicle is in your path, thevehicle will react like traditional cruise control.
{WARNING:
Adaptive Cruise Control will not apply hard braking
or bring the vehicle to a complete stop. It will not
respond to stopped vehicles, pedestrians or
animals. When you are approaching a vehicle or
object, Adaptive Cruise Control may not have time
to slow your vehicle enough to avoid a collision.
Your complete attention is always required while
driving and you should be ready to take action and
apply the brakes. For more information, see
Defensive Driving on page 5-2.
{WARNING:
•On winding roads, Adaptive Cruise Control
may not detect a vehicle ahead. You couldcrash into a vehicle ahead of you. Do not useAdaptive Cruise Control on winding roads.
•Adaptive Cruise Control may not have time to
slow your vehicle enough to avoid a crashwhen you are driving in conditions wherevehicles may suddenly slow or stop ahead ofyou, enter your lane, or cross your vehicle’spath. If you are driving in these conditions, donot use Adaptive Cruise Control. The warningbeep and alert symbol may indicate that youare driving in conditions where AdaptiveCruise Control should not be used. See“Alerting the Driver” in this section.
•On slippery roads, fast changes in tire traction
can cause needless wheel spinning, and youcould lose control. Do not use cruise controlon slippery roads.
WARNING: (Continued)
4-16