2006 CADILLAC STS brake

How the System Works
URPA comes on automatically when the shift lever is
moved into REVERSE (R) and the vehicle speed is less
than 3 mph (5 km/h). When the system turns on, the
three lights on the display will illuminate for one and a
half seconds to let you know that the system is
working. If your vehicle is moving in REVERSE (R) at a
speed greater than 3 mph (5 km/h), the red light will
ash to remind you that the system does not work at a
speed greater than 3 mph (5 km/h).
If an object is detected at a REVERSE (R) speed of
less than 3 mph (5 km/h), one of the following will occur:
Description English Metric
Amber light 5 ft 1.5 m
Amber/amber lights 40 in 1.0 m
Amber/amber/red lights &
continuous chime20 in 0.5 m
Amber/amber/red lights
ashing & continuous
chime1 ft 0.3 m
A chime will sound the rst time an object is detected
between 20 inches (0.5 m) and 5 feet (1.5 m) away.
URPA cannot detect objects that are above trunk level.
In order for the rear sensors to recognize an object,
it must be within detection range behind the vehicle.
When the System Does Not Seem to
Work Properly
The light may ash red when the vehicle is in
REVERSE (R), if the ultrasonic sensors are not kept
clean. So be sure to keep your rear bumper free of mud,
dirt, snow, ice and slush. Other conditions that may
affect system performance include things like the
vibrations from a jackhammer or the compression of air
brakes on a very large truck. If after cleaning the
rear bumper and then driving forward at least 15 mph
(25 km/h), the display continues to ash red, see
your dealer.
If a trailer was attached to your vehicle, or a bicycle or
an object was hanging out of your trunk during your
last drive cycle, the light may also ash red. The light will
continue to ash whenever in REVERSE (R) until
your vehicle is driven forward at least 15 mph (25 km/h)
without any obstructions behind the vehicle.
For cleaning instructions, seeWashing Your Vehicle on
page 5-98.
3-45

Brake System Warning Light
Your vehicle’s hydraulic brake system is divided into
two parts. If one part isn’t working, the other part can still
work and stop you. For good braking, though, you
need both parts working well.
If the warning light comes on, there is a brake problem.
Have your brake system inspected right away.
This light should come on briey when you turn the
engine on. If it does not come on then, have it xed so
it will be ready to warn you if there is a problem.When the ignition is on, the brake system warning light
will also come on when you set your parking brake. The
light will stay on if your parking brake does not release
fully. If it stays on after your parking brake is fully
released, it means you have a brake problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push, or the pedal may go closer to the
oor. It may take longer to stop. If the light is still on,
have the vehicle towed for service. SeeTowing
Your Vehicle on page 4-37.
{CAUTION:
Your brake system may not be working properly
if the brake system warning light is on. Driving
with the brake system warning light on can lead
to an accident. If the light is still on after you
have pulled off the road and stopped carefully,
have the vehicle towed for service. United StatesCanada
3-64

Anti-Lock Brake System
Warning Light
With the anti-lock brake
system, the light will come
on when your engine is
started and may stay on
for several seconds.
That is normal.
If the ABS warning light comes on and stays on, there
may be a problem with the antilock portion of the
brake system. If the red BRAKE light is not on, you still
have brakes, but you do not have antilock brakes.
SeeBrake System Warning Light on page 3-64.
If the light stays on, press the ignition button to OFF/ACC.
If the light comes on when you are driving, stop as soon
as possible and turn the ignition off. Then start the engine
again to reset the system. If the light still stays on, or
comes on again while you are driving, your vehicle needs
service. If the regular brake system warning light is not
on, you still have brakes, but you do not have anti-lock
brakes. If the regular brake system warning light is also
on, you do not have anti-lock brakes and there is a
problem with your regular brakes. SeeBrake System
Warning Light on page 3-64.The anti-lock brake system warning light should come
on briey when you turn the ignition on. If the light does
not come on then, have it xed so it will be ready to
warn you if there is a problem.
Low Tire Pressure Warning Light
This light will come on
briey as you start the
engine, for vehicles
equipped with the Tire
Pressure Monitor System.
It will then come on only when a at or low tire pressure
condition exists.
SeeTire Pressure Monitor System on page 5-66for
more information.
3-65

If this message appears immediately after starting the
engine, it is possible that the generator can still recharge
the battery. The battery should recharge while driving
but may take a few hours to do so. Consider using
an auxiliary charger to boost the battery after returning
home or to a nal destination. Make sure you follow
the manufacturer’s instructions.
If this message appears while driving or after starting
your vehicle and stays on, have it checked immediately
to determine the cause of this problem.
To help the generator recharge the battery quickly, you
can reduce the load on the electrical system by
turning off the accessories.
The normal battery voltage range is 11.5 to 15.5 volts.
You can monitor battery voltage on the DIC by pressing
the information button until you nd BATTERY VOLTS.
CHANGE ENGINE OIL SOON
When this message displays, it means that service is
required for your vehicle. See your GM dealer. See
Engine Oil on page 5-18andScheduled Maintenance
on page 6-4for 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, see
Engine Oil Life System on page 5-22.
CHECK BRAKE FLUID
This message will display if the ignition is on to inform
the driver that the brake uid level is low. Have the
brake system serviced by your GM dealer as soon as
possible. SeeBrake System Warning Light on page 3-64
for more information.
CHECK COOLANT LEVEL
This message will display when there is a low level of
engine coolant. Have the cooling system serviced
by your GM dealer as soon as possible. SeeEngine
Coolant on page 5-26for more information.
CHECK GAS CAP
When this message displays, the gas cap has not been
fully tightened. You should recheck the gas cap to
ensure that it is on and tightened properly.
CHECK OIL LEVEL
This message will display when the oil level is low. See
Engine Oil on page 5-18for more information on
checking your engine oil.
3-81

NO FOB OFF OR RUN?
When this message displays, it means that the keyless
access transmitter is not detected inside the vehicle
while you are trying to turn the ignition off. Your vehicle
may be near a strong radio antenna signal causing
the keyless access system to be jammed. The vehicle
will remain in ACC until OFF or START has been
pressed or 10 minutes has expired. If you turn the
ignition off and you cannot nd the keyless access
transmitter, you will not be able to restart the vehicle.
The keyless access transmitter needs to be inside of the
vehicle in order for the vehicle to start. SeeStarting
the Engine on page 2-25for more information.
OIL PRESSURE LOW STOP ENGINE
Notice:If you drive your vehicle while the engine
oil pressure is low, severe engine damage may
occur. If a low oil pressure warning appears on the
instrument panel cluster and/or DIC, stop the
vehicle as soon as possible. Do not drive the vehicle
until the cause of the low oil pressure is corrected.
SeeEngine Oil on page 5-18for more information.
A multiple chime will sound when this message is
displayed. SeeEngine Oil on page 5-18for more
information.
PASSENGER DOOR AJAR
This symbol appears with
the PASSENGER DOOR
AJAR message.
When this message displays, it means that the
passenger’s side front door was not closed completely.
You should make sure that the door is closed
completely.
PRESS START AND BRAKE TO
START ENGINE
When this message displays, it means that you need to
press down on the brake pedal while pressing the
start button on the electronic keyless ignition when trying
to start your vehicle. SeeStarting the Engine on
page 2-25for more information.
3-87

RADAR CRUISE NOT READY
When this message displays, it means that the Adaptive
Cruise Control system will not activate due to a
temporary condition. Your vehicle does not require
service. This message will also display when either of
the following conditions occurs:
The driver turns off the head-up display (HUD)
while the Adaptive Cruise Control is engaged.
The driver attempts to engage the Adaptive Cruise
Control while the HUD is off.
If this message appears when you attempt to activate
the system, continue driving for several minutes
and then try activating the system again.
RIGHT REAR DOOR AJAR
This symbol appears with
the RIGHT REAR DOOR
AJAR message.
When this message displays, it means that the
passenger’s side rear door was not closed completely.
You should check to make sure that the door is
closed completely.
SERVICE AC (Air Conditioning)
SYSTEM
This message will display when the electronic sensors
that control the air conditioning and heating systems are
no longer working. Have the climate control system
serviced by your GM dealer if you notice a drop
in heating and air conditioning efficiency.
SERVICE AIR BAG
This message will display when there is a problem with
the airbag system. Have your vehicle serviced by
your GM dealer immediately. SeeAirbag Readiness
Light on page 3-60for more information.
SERVICE BRAKE ASSIST
This message will display when a problem with the
panic brake assist system has been detected. Have your
vehicle serviced by your GM dealer.
SERVICE RADAR CRUISE
When this message displays, it means that the Adaptive
Cruise Control system is disabled and needs service.
See your GM dealer.
3-88

Notice:The chime signals related to safety belts,
parking brake, and other functions of your vehicle
operate through the radio/entertainment system. If
that equipment is replaced or additional equipment is
added to your vehicle, the chimes may not work.
Make sure that replacement or additional equipment
is compatible with your vehicle before installing it.
SeeAccessories and Modifications on page 5-3.
Your vehicle has a feature called Retained Accessory
Power (RAP). With RAP, the audio system can be
played even after the ignition is turned off. SeeRetained
Accessory Power (RAP) on page 2-25for more
information.
Setting the Time
1. Press the tune/select knob (the right knob) to enter
the main menu.
2. Turn the tune/select knob until SET CLOCK
appears on the display.
3. Press the tune/select knob to select SET CLOCK.
4. Turn the tune/select knob to adjust the time.
5. Press the tune/select knob to update the time.
VEHICLE TIME UPDATED will appear on the
display.If the CLOCK/RADIO DISP is congured into one of the
congurable keys, pressing the key will switch the display
back to the clock set function. The time and date will
always appear on the radio display. See “Congurable
Radio Display Keys” underRadio with CD on page 3-96
for more information on conguring the keys.
Setting the Date
1. Press the tune/select knob (the right knob) to enter
the main menu.
2. Turn the tune/select knob until SET DATE appears
on the display.
3. Press the tune/select knob to select SET DATE.
4. Turn the tune/select knob to adjust the date.
5. Press the tune/select knob to update the time.
VEHICLE DATE UPDATED will appear on the
display.
If the DATE is congured into one of the congurable
keys, pressing the key will switch the display back to the
date set function. The time and date will always
appear on the radio display. See “Congurable Radio
Display Keys” underRadio with CD on page 3-96
for more information on conguring the keys.
3-95

Your Driving, the Road, and Your Vehicle..........4-2
Defensive Driving...........................................4-2
Drunken Driving.............................................4-3
Control of a Vehicle........................................4-6
Braking.........................................................4-6
Anti-Lock Brake System (ABS).........................4-7
Braking in Emergencies...................................4-9
Traction Control System (TCS).........................4-9
Competitive Driving Mode (STS-V)..................4-10
Magnetic Ride Control...................................4-11
Limited-Slip Rear Axle...................................4-11
StabiliTrak
®System......................................4-11
Panic Brake Assist........................................4-12
All-Wheel Drive (AWD) System.......................4-12
Steering......................................................4-12
Off-Road Recovery.......................................4-15
Passing.......................................................4-15
Loss of Control.............................................4-17Competitive Driving.......................................4-18
Driving at Night............................................4-18
Driving in Rain and on Wet Roads..................4-20
City Driving..................................................4-22
Freeway Driving...........................................4-23
Before Leaving on a Long Trip.......................4-24
Highway Hypnosis........................................4-25
Hill and Mountain Roads................................4-25
Winter Driving..............................................4-27
If Your Vehicle is Stuck in Sand, Mud,
Ice, or Snow.............................................4-31
Rocking Your Vehicle to Get It Out.................4-32
Loading Your Vehicle....................................4-32
Towing..........................................................4-37
Towing Your Vehicle.....................................4-37
Recreational Vehicle Towing...........................4-38
Towing a Trailer (STS Only)...........................4-40
Section 4 Driving Your Vehicle
4-1