2007 CADILLAC STS light

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.
If the Light Is Flashing
The following may prevent more serious damage
to your vehicle:
Reducing vehicle speed
Avoiding hard accelerations
Avoiding steep uphill grades
If the light stops ashing and remains on steady,
see “If the Light Is On Steady” following.If the light continues to ash, when it is safe to do
so, stop the vehicle. Find a safe place to park
your vehicle. Turn the engine off, wait at
least 10 seconds and restart the engine. If the
light remains on steady, see “If the Light Is
On Steady” following. If the light is still ashing,
follow the previous steps, and see your dealer for
service as soon as possible.
If the Light Is On Steady
You also may be able to correct the emission
system malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully
install the cap. SeeFilling the Tank on page 368.
The diagnostic system can determine if the
fuel cap has been left off or improperly installed.
A loose or missing fuel cap will allow fuel to
evaporate into the atmosphere. A few driving trips
with the cap properly installed should turn the
light off.
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Did you just drive through a deep puddle of water?
If so, your vehicle’s electrical system may be wet.
The condition will usually be corrected when
the electrical system dries out. A few driving trips
should turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 365. Poor fuel
quality will cause the engine not to run as
efficiently as designed. You may notice this as
stalling after start-up, stalling when you put
the vehicle into gear, misring, hesitation on
acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is
warmed up.) This will be detected by the system
and cause the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at
least one full tank of the proper fuel to turn the
light off.
If none of the above steps have made the light
turn off, your dealer can check the vehicle.
Your dealer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.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 111. 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.
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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 the
battery or if the 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 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.
If equipped, this light
tells you if there could be
a problem with your
engine oil pressure.
This light will come on briey when you start your
engine. That is a check to be sure the light
works. If it does not come on, be sure to have it
xed so it will be there to warn you if something
goes wrong.
When the light comes on and stays on, it means
that oil is not owing through your engine properly.
You could be low on oil and you might have
some other system problem.
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Security Light
For information
regarding this light,
seeTheft-Deterrent
System on page 108.
Fog Lamp Light
The fog lamp light will
come on when the fog
lamps are in use.
The light will go out when the fog lamps are
turned off. SeeFog Lamps on page 217for
more information.
Lights On Reminder
This light comes on
whenever the parking
lamps are on.
SeeHeadlamps on Reminder on page 216for
more information.
Cruise Control Light
This light comes on
whenever you set your
cruise control.
The light will go out when the cruise control is
turned off. SeeCruise Control on page 193
andAdaptive Cruise Control on page 197for
more information.
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Highbeam On Light
This light comes on
whenever the
high-beam headlamps
are on.
See “Intellibeam™ Intelligent High-Beam
Headlamp Control System” underHeadlamps on
page 211andHeadlamp High/Low-Beam
Changer on page 183for more information.
Fuel Gage
The fuel gage shows
approximately how
much fuel is in the tank.
It works only when
the engine is on.If the fuel supply gets low, the Fuel Level Low
message will appear on the DIC and a single
chime will sound. SeeDIC Warnings and
Messages on page 264for more information.
Here are a few concerns some owners have had
about the fuel gage. All of these situations are
normal and do not indicate that anything is wrong
with the fuel gage:
At the gas station the gas pump shuts off
before the gage reads full.
The gage may change when you turn, stop
quickly or accelerate quickly.
It takes a little more or less fuel to ll the tank
than the gage indicated. For example, the gage
may have indicated that the tank was half full,
but it actually took a little more or less than half
the tank’s capacity to ll the tank.
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AVG MPH (AVG km/h)
This display shows the average speed of the
vehicle in miles per hour (mph) or kilometers per
hour (km/h). This average is calculated based on
the various vehicle speeds recorded since the last
reset of this display. To reset AVG MPH, press the
reset button. The display will return to zero.
TIMER OFF
This display can be used like a stopwatch. You can
record the time it takes to travel from one point to
another. To access the timer, press the information
button until 00:00:00 TIMER OFF displays. To turn
on the timer, press the reset button until TIMER ON
displays. The timer will then start. To turn off the
timer, press the reset button again until TIMER OFF
displays. The timer will stop and display the end
timing value. To reset the timer, press and hold the
reset button after the timer has been stopped. The
display will return to zero.
BATTERY VOLTS
This display shows the current battery voltage.
If the voltage is in the normal range, the value will
display. For example, the display may read
13.2 BATTERY VOLTS. If the voltage is low, the
display will have LOW after it. If the voltage is high,the display will have HIGH after it. Your vehicle’s
charging system regulates voltage based on
the state of the battery. The battery voltage may
uctuate when viewing this information on the DIC.
This is normal. SeeCharging System Light on
page 247for more information.
If there is a problem with the battery charging
system, the DIC may display a message. SeeDIC
Warnings and Messages on page 264and
Electric Power Management on page 221for
more information.
Tire Pressure
If your vehicle has a Tire Pressure Monitor (TPM)
system, this display shows the air pressure of
each road tire in either pounds per square
inch (psi) or kilopascals (kPa). If the tire pressure
is normal, the value will display. If the tire
pressure is low, LOW will appear on the display
with the value. If the tire pressure is high,
HIGH will appear on the display with the value.
Press the information button to scroll through the
following displays:
LF TIRE:This display shows the air pressure in
the driver’s side front tire.
RF TIRE:This display shows the air pressure in
the passenger’s side front tire.
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AUTOMATIC LIGHTS OFF
This message displays when the automatic
headlamps are turned off. SeeHeadlamps on
page 211for more information.
AUTOMATIC LIGHTS ON
This message displays when the automatic
headlamps are turned on. SeeHeadlamps on
page 211for more information.
BATTERY NOT CHARGING SERVICE
CHARGING SYS (System)
This symbol appears
with this message.
This message displays when a problem with the
charging system has been detected. Have your
vehicle serviced by your dealer.
BATTERY SAVER ACTIVE
This message displays when the system detects
that the battery voltage is dropping beyond a
reasonable level. The battery saver system starts
reducing certain features of the vehicle that
you may be able to notice. At the point that the
features are disabled, this message is displayed.
It means that the vehicle is trying to save the
charge in the battery.
Turn off all unnecessary accessories to allow the
battery to recharge.
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.
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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
This message displays when service is required
for your vehicle. See your dealer. SeeEngine
Oil on page 380andScheduled Maintenance on
page 505for 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, seeEngine Oil Life
System on page 383.
CHECK BRAKE FLUID
This message displays if the ignition is on to
inform the driver that the brake uid level is low.
Have the brake system serviced by your dealer as
soon as possible. SeeBrake System Warning
Light on page 248for more information.
CHECK GAS CAP
This message displays when the fuel cap has not
been fully tightened. Recheck the fuel cap to
ensure that it is on and tightened properly.
CHECK TIRE PRESSURE
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message displays when the tire
pressure in one of the tires needs to be checked.
SeeDIC Controls and Displays on page 258
for more information on checking your vehicle’s
tire pressures. If a tire pressure message appears
on the DIC, stop as soon as you can. Have the
tire pressures checked and set to those shown on
the Tire Loading Information label. SeeTire
Pressure Monitor System on page 433and
Ination - Tire Pressure on page 431for more
information. If the tire pressure is low, the low tire
pressure warning light comes on. SeeLow Tire
Pressure Warning Light on page 249.
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