ignition CHEVROLET COBALT 2007 1.G Service Manual

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. Make sure the parking
brake is fully released. 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 264.
{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
Your vehicle may
have an Anti-Lock
Brake System (ABS)
warning light.
The ABS warning light will come on briey when
you turn the ignition key to RUN. This is normal.
If the light does not come on then, have it xed so
it will be ready to warn you if there is a problem.
If the light stays on, turn the ignition off, 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 171.
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Engine Coolant Temperature
Warning Light
The engine coolant
temperature warning
light will come on
when the engine
has overheated.
If this happens you should pull over and turn off
the engine as soon as possible. SeeEngine
Overheating on page 309for more information.
Notice:Driving with the engine coolant
temperature warning light on could cause your
vehicle to overheat. SeeEngine Overheating
on page 309. Your vehicle could be damaged,
and it might not be covered by your warranty.
Never drive with the engine coolant
temperature warning light on.
This light will also come on briey when starting
your vehicle. If it does not, have your vehicle
serviced.
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.
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Notice:If you keep driving your vehicle with
this light on, after awhile, the emission controls
might not work as well, your vehicle’s fuel
economy might not be as good, and the engine
might not run as smoothly. This could lead
to costly repairs that might not be covered by
your warranty.
Notice:Modications made to the engine,
transaxle, 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. SeeAccessories
and Modifications on page 280.This light should come on, as a check to show
you it is working, when the ignition is on and
the engine is not running. 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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Oil Pressure Light
If you have a low
engine oil pressure
problem, this light
will stay on after you
start your engine,
or come on when
you are driving.
This indicates that your engine is not receiving
enough oil.
The engine could be low on oil, or could have
some other oil problem. Have it xed immediately.
The oil light could also come on in three other
situations:
When the ignition is on but the engine is not
running, the light will come on as a test to show
you it is working, but the light will go out when
you turn the ignition to START. If it does not
come on with the ignition on, you may have a
problem with the fuse or bulb. Have it xed
right away.
If you are idling at a stop sign, the light may
blink on and then off.
If you make a hard stop, the light may come
on for a moment. This is normal.
{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.
178

Here are four things that some owners ask about.
None of these show a problem with your fuel gage:
At the service station, the gas pump shuts off
before the gage reads full.
It takes a little more or less fuel to ll up than
the gage indicated. For example, the gage may
have indicated the tank was half full, but it
actually took a little more or less than half the
tank’s capacity to ll the tank.
The gage moves a little when you turn a corner
or speed up.
The gage doesn’t go back to empty when you
turn off the ignition.
For your fuel tank capacity, seeCapacities and
Specications on page 390.
Boost Gage
If equipped, this gage is located near the driver’s
side of the instrument panel cluster.
This gage indicates vacuum during light to
moderate throttle and boost under heavier throttle.
This gage displays the air pressure level in the
intake manifold before it enters the engine’s
combustion chamber.
This gage is automatically centered at zero every
time the ignition is turned to RUN. Actual vacuum or
boost is displayed from this zero point. Changes in
ambient pressure, such as driving in mountains and
changing weather, will slightly change the zero
reading.
United StatesCanada
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Driver Information Center (DIC)
Your vehicle has a Driver Information Center
(DIC). The DIC display gives you the status of
many of your vehicle’s systems. The DIC is also
used to display driver personalization menu modes
and warning/status messages. All messages will
appear in the DIC display, located at the bottom of
the instrument panel cluster.
The DIC buttons are
located on the left side
of the steering wheel.
q(Information):Press this button to scroll
through the vehicle information mode displays.
r(Reset):Press this button to reset some
vehicle information mode displays, select a
personalization menu mode setting, or
acknowledge a warning message.
Press and hold the information and reset buttons
at the same time for one second, then release
the buttons to enter the personalization menu.
SeeDIC Vehicle Personalization on page 186for
more information.
DIC Operation and Displays
The DIC comes on when the ignition is on. The
DIC has different modes which can be accessed
by pressing the DIC buttons. The button functions
are detailed in the following.
181

DIC Warnings and Messages
These messages appear if there is a problem
detected in one of your vehicle’s systems.
A message will clear when the vehicle’s condition
is no longer present. To acknowledge a message
and clear it from the display, press and hold
any of the DIC buttons. If the condition is still
present, the warning message will come back on
the next time the vehicle is turned off and back
on. With most messages, a warning chime sounds
when the message displays. Your vehicle may
have other warning messages.
AUTO (Automatic) LIGHTS OFF
This message displays if the automatic headlamp
system is disabled with the headlamp switch.
AUTO (Automatic) LIGHTS ON
This message displays if the automatic headlamp
system is enabled with the headlamp switch.
BRAKE FLUID
This message displays to inform the driver that the
brake uid level is low while the ignition is on.
The brake system warning light on the instrument
panel cluster also comes on. SeeBrake System
Warning Light on page 171for more information.
Have the brake system serviced by your dealer
as soon as possible.
CHANGE OIL SOON
This message displays when the life of the engine
oil has expired and it should be changed.
When you acknowledge the CHANGE OIL SOON
message by clearing it from the display, you
still must reset the engine oil life system
separately. SeeEngine Oil Life System on
page 298andScheduled Maintenance on
page 396for more information.
CHECK GAS CAP
This message displays if the fuel cap has not
been fully tightened. Recheck the fuel cap to
make sure that it is on properly. A few driving
trips with the cap properly installed should turn
the message off.
184

To change feature settings, use the following
procedure:
Entering Personalization Menu
1. Turn the ignition on while the vehicle is
stopped.
To avoid excessive drain on the battery,
it is recommended that the headlamps are
turned off.
2. Press and hold the information and reset
buttons at the same time for one second, then
release to enter the personalization menu.
If the vehicle speed is greater than
2 mph (3 km/h), only the UNITS menu
will be accessible.
3. Press the information button to scroll through
the available personalization menu modes.
Press the reset button to scroll through
the available settings for each mode.
If you do not make a selection within
ten seconds, the display will go back to
the previous information displayed.
Personalization Menu Modes
OIL LIFE RESET
When this feature is displayed, you can reset
the engine oil life system. To reset the system,
seeEngine Oil Life System on page 298.
See “OIL LIFE” underDIC Operation and
Displays on page 181for more information.
UNITS
This feature allows you to select the units of
measurement in which the DIC will display the
vehicle information. When UNITS appears on the
display, press and hold the reset button for at
least one second to scroll through the available
settings:
ENGLISH (default in United States):All
information will be displayed in English units.
METRIC (default in Canada):All information will
be displayed in metric units.
Choose one of the available settings and press
the information button to select it and move on to
the next feature.
187

DELAY LOCK
This feature, which delays the actual locking of
the vehicle, can be enabled or disabled. When
DELAY LOCK appears on the display, press and
hold the reset button for at least one second
to scroll through the available settings:
ON (default):The doors will not lock until
ve seconds after the last door is closed.
You can temporarily override delayed locking
by pressing the power lock switch or the lock
button on the Remote Keyless Entry (RKE)
transmitter a second time.
OFF:The doors will lock immediately when
pressing the power lock switch or the lock button
on the RKE transmitter.
SeePower Door Locks on page 99,Delayed
Locking on page 99, andRemote Keyless Entry
(RKE) System Operation on page 92for more
information.
Choose one of the available settings and press
the information button to select it and move on to
the next feature.
AUTO UNLK (Unlock)
This feature, which allows the vehicle to
automatically unlock certain doors, can be enabled
or disabled. When AUTO UNLK appears on the
display, press and hold the reset button for at least
one second to scroll through the available settings:
ALL (default):All of the doors will automatically
unlock.
DRIVER:The driver’s door will automatically
unlock.
NONE:None of the doors will automatically unlock.
You will need to manually unlock the doors.
If you have a manual transaxle vehicle, the door(s)
will automatically unlock when the ignition is
turned off.
If you have an automatic transaxle vehicle, you can
select when the automatic unlocking will occur.
See “UNLK (Unlock) (Automatic Transaxle Only)”
following.
SeeProgrammable Automatic Door Unlock on
page 100for more information.
Choose one of the available settings and press
the information button to select it and move on to
the next feature.
190

LANGUAGE
This feature allows you to select the language in
which the DIC will display. When LANGUAGE
appears on the display, press and hold the reset
button for at least one second to scroll through the
available settings:
ENGLISH (default):The DIC will display all
information in English.
FRENCH:The DIC will display all information
in French.
SPANISH:The DIC will display all information
in Spanish.
GERMAN:The DIC will display all information
in German.
Choose one of the available settings and press
the information button to select it and exit out
of the personalization menu mode.
Exiting Personalization Menu
The personalization menu will be exited when any
of the following conditions occur:
A ten second time period has elapsed.
The ignition is turned off.
The end of the personalization menu list
is reached.
Audio System(s)
Determine which radio your vehicle has and then
read the pages following to familiarize yourself
with its features.
Driving without distraction is a necessity for a safer
driving experience. SeeDefensive Driving on
page 226. By taking a few moments to read this
manual and get familiar with your vehicle’s audio
system, you can use it with less effort, as well as
take advantage of its features. While your vehicle
is parked, set up your audio system by presetting
your favorite radio stations, setting the tone and
adjusting the speakers. Then, when driving
conditions permit, you can tune to your favorite
stations using the presets and steering wheel
controls if the vehicle has them.
192