ignition CADILLAC STS 2005 1.G Service Manual

Charging System Light
When you turn the engine
on, this light will come on
briey to show that the
generator and battery
charging systems
are working properly.
If this light stays on, your vehicle needs service. You
should take your vehicle to the dealer at once. To save
your battery until you get there, turn off all accessories.
SeeDIC Controls and Displays on page 3-74for
more information.
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.
United StatesCanada
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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 4-35.
{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.
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, turn the ignition 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. See
Brake System Warning Light on page 3-64.
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Malfunction Indicator Lamp
Check Engine Light
Your vehicle is equipped
with 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.
Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system of your
vehicle or the replacement of the original tires with
other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modications to these systems could lead to costly
repairs not covered by your warranty. This may also
result in a failure to pass a required Emission
Inspection/Maintenance test.
This light should come on briey, as a check to show
you it is working, as you start the engine. If the light
does not come on, have it repaired. This light will also
come on during a malfunction in one of two ways:
Light Flashing— A misre condition has been
detected. A misre increases vehicle emissions and
may damage the emission control system on your
vehicle. Diagnosis and service may be required.
Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
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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 2-22. 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 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.
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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” under
DIC Controls and Displays on page 3-74for informationon 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 on page 2-26for
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 next to the shift position indicator. When the
normal mode is active, only the shift position indicator
will appear. See “Driver Shift Control” underAutomatic
Transmission Operation on page 2-26for 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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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 5-22for 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.
SeeEngine Oil on page 5-15for more information on
checking your engine oil.
CHECK TIRE PRESSURE
This symbol appears
with the CHECK TIRE
PRESSURE message.
If your vehicle is equipped with a tire pressure monitor,
this message will display when one or more of the
vehicle’s tires are low or high. SeeDIC Controls and
Displays on page 3-74for information on checking your
vehicle’s tire pressures.
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NO FOBS DETECTED
When this message displays, it means that the vehicle
does not detect the keyless access transmitter. The
keyless access transmitter must be in the vehicle for the
ignition to work. Make sure you have the transmitter
inside of the vehicle when using the electronic keyless
ignition with push-button start. SeeIgnition Positions
on page 2-22for more information.
If the keyless access transmitter is inside of the
vehicle while this message is displayed and the
push-button start is not working, your vehicle
may be near a strong radio antenna signal causing
the keyless access system to be jammed.If this happens, place the transmitter into the transmitter
pocket located in the center console. This will then
allow you to start the vehicle in the normal manner
using the push-button start.
NO FOB OFF OR RUN?
When this message displays, it means that the keyless
access transmitter is not detected inside of the
vehicle while you are trying to turn the ignition off. You
can either keep the car running or turn the ignition
off while you locate your keyless access transmitter.
However, 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 2-24for
more information.
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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 2-24for more information.
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.
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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 3-63for more information.
SERVICE RADAR CRUISE
When this message displays, it means that the Adaptive
Cruise Control system is disabled and needs service.
See your GM dealer.
SERVICE STABILITY SYS (System)
Your vehicle may be equipped with a vehicle stability
enhancement system called StabiliTrak®.
SeeStabiliTrak
®System on page 4-10. 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 be equipped with a speed variable
assist steering system. SeeSteering on page 4-11.
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
This message will display if the Tire Pressure
Monitor (TPM) system, if equipped, is not working
properly. Have your vehicle serviced by your GM dealer
as soon as possible.
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TRACTION ACTIVE
This message will display when the traction control
system is actively limiting wheel spin. Slippery
road conditions may exist if this message is displayed,
so adjust your driving accordingly. The message will
stay on for a few seconds after the traction control
system stops limiting wheel spin. SeeTraction Control
System (TCS) on page 4-8for more information.
TRANS (Transmission) HOT IDLE
ENGINE
This message will display when the transmission uid in
your vehicle is too hot. Stop the vehicle and allow it
to idle until the transmission cools down or until
this message is removed.
TRUNK OPEN
This symbol appears with
the TRUNK OPEN
message.When this message displays, it means that the trunk
was not closed completely. You should make sure that
the trunk is closed completely.
TURN SIGNAL ON
If you drive your vehicle for more than about 1 mile
(1.6 km) with a turn signal on, this message will display
as a reminder to turn off the turn signal. A multiple
chime will sound when this message is displayed.
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 2-22.
KNOWN FOB
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-4.
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