ignition CADILLAC STS 2006 1.G Service Manual

Passenger Safety Belt
Reminder Light
Several seconds after the ignition button is pressed to
START, a chime will sound for several seconds to
remind the front passenger to buckle their safety belt.
This would only occur if the passenger airbag is
enabled. SeePassenger Sensing System on page 1-59
for more information. The passenger safety belt light
will also come on and stay on for several seconds, then
it will ash for several more.
This chime and light will be
repeated if the passenger
remains unbuckled and
the vehicle is in motion.
If the passenger’s safety belt is buckled, neither the
chime nor the light will come on.
Airbag Readiness Light
There is an airbag readiness light on the instrument
panel, which shows the airbag symbol. The system
checks the airbag’s electrical system for malfunctions.
The light tells you if there is an electrical problem.
The system check includes the airbag sensors, the
airbag modules, the wiring and the diagnostic module.
For more information on the airbag system, see
Airbag System on page 1-49.
This light will come on
when you start your
vehicle, and it will ash for
a few seconds. Then
the light should go out.
This means the system
is ready.
If the airbag readiness light stays on after you start the
vehicle or comes on when you are driving, your
airbag system may not work properly. Have your vehicle
serviced right away.
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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
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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

Engine Coolant Temperature Gage
This gage shows the
engine coolant
temperature.
It can be used to see when your engine has warmed up
and to make sure your cooling system is operating
properly. If the gage pointer moves into the shaded area,
the engine coolant is too hot and the engine coolant
temperature warning light will come on. SeeEngine
Overheating on page 5-30for more information.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle has a
computer which monitors
operation of the fuel,
ignition, and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The Check Engine light comes on to
indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
Notice:If you keep driving your vehicle with this
light on, after awhile, your emission controls
may not work as well, your fuel economy may not
be as good, and your engine may not run as
smoothly. This could lead to costly repairs that may
not be covered by your warranty.
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Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this
inspection could prevent you from getting a vehicle
registration.
Here are some things you need to know to help your
vehicle pass an inspection:
Your vehicle will not pass this inspection if the Check
Engine light is on or not working properly.
To perform a Check Engine light bulb check with the
keyless ignition, make sure the transmitter fob is in the
passenger compartment. SeeIgnition Positions on
page 2-24. Press the bottom of the ACC button on
the instrument panel and hold the button down for
ve seconds. The instrument panel, including the Check
Engine light, will light up and the ignition will be on, but
the engine will not start — if you press the bottom of the
ACC button only briey, less than ve seconds, the
accessory power mode will be turned on, but not the
ignition. After the bulb check, be sure to press and
release the ACC button again to turn the ignition off
and avoid draining the vehicle’s battery.
Your vehicle will not pass this inspection if the
OBD (on-board diagnostic) system determines that
critical emission control systems have not been
completely diagnosed by the system.The vehicle would be considered not ready for inspection.
This can happen if you have recently replaced your
battery or if your battery has run down. The diagnostic
system is designed to evaluate critical emission control
systems during normal driving. This may take several
days of routine driving. If you have done this and your
vehicle still does not pass the inspection for lack of OBD
system readiness, your GM dealer can prepare the
vehicle for inspection.
Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance may
damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.
3-70

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 current driver and 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 either the odometer,
the trip odometer A or the trip odometer B information on
the left side. Only one odometer can appear at a time.
See “Trip Information” underDIC Controls and Displays
on page 3-74for information on changing the display to
show the odometer or trip odometer information. The
bottom line of the DIC display also shows the outside
temperature on the right side and the shift lever position
indicator in the center.SeeAutomatic Transmission Operation (5-Speed
Automatic) on page 2-28orAutomatic Transmission
Operation (6-Speed Automatic) on page 2-32for more
information on the shift lever positions.
When the sport mode is active, an S will appear next to
the shift position indicator on the center of the DIC
display. When the manual mode is active, an M will
appear on the DIC display. When the normal mode is
active, only the shift position indicator will appear. While
the Driver Shift Control (DSC) feature is active, the DIC
will change to show the selected gear. See “Driver Shift
Control (DSC)” underAutomatic Transmission Operation
(5-Speed Automatic) on page 2-28orAutomatic
Transmission Operation (6-Speed Automatic) on
page 2-32for more information.
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.
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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

SERVICE STABILITY SYS (System)
Your vehicle may have a vehicle stability enhancement
system called StabiliTrak®.
SeeStabiliTrak
®System on page 4-11. The SERVICE
STABILITY SYS message will display if there has
been a problem detected with StabiliTrak
®.
If the SERVICE STABILITY SYS message comes on
while you are driving, pull off the road as soon as
possible and stop carefully. Try resetting the system by
turning the ignition off then back on. If the SERVICE
STABILITY SYS message still stays on or comes back
on again while you are driving, your vehicle needs
service. Have the StabiliTrak
®System inspected by your
GM dealer as soon as possible.
SERVICE STEERING SYS (System)
Your vehicle may have a speed variable assist steering
system. SeeSteering on page 4-12.
The SERVICE STEERING SYS message will display if
a problem is detected with the speed variable assist
steering system. When this message is displayed, you
may notice that the effort required to steer the vehicle
increases or feels “heavier,” but you will still be able to
steer the vehicle.
SERVICE SUSPENSION SYS (System)
This message will display when the suspension
system is not operating properly. Have your vehicle
serviced by your GM dealer.
SERVICE TIRE MONITOR
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message will display if the TPM system is
not working properly. Have your vehicle serviced by
your GM dealer as soon as possible.
SERVICE THEFT SYSTEM
This message will display when there is a problem with
the hood open and closed switches. The switches may
need to be replaced. When this message is displayed,
the theft-deterrent system will still be protecting the
interior of the vehicle, however, the hood area will not be
protected at this time. Also, the remote start function will
not work when this message appears. See your
GM dealer for service.
SERVICE TRANSMISSION
This message will display when there is a problem with
the transmission of your vehicle. Have your vehicle
serviced by your GM dealer.
3-89

Other Messages
Here are more messages that you can receive on your
Driver Information Center (DIC). To acknowledge a
message and read another message that may have
come on at the same time, press the reset button.
ACCESSORY ACTIVE
SeeIgnition Positions on page 2-24.
KNOWN FOB
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
MAX # FOBS LEARNED
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
OFF/ACC (Accessory) TO LEARN
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
READY FOR FOB X
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
SHIFT TO PARK
SeeStarting the Engine on page 2-25andShifting
Into Park (P) on page 2-36.
WAIT XX MIN (Minutes)
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
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