2007 SATURN ION engine

Battery Warning Light
The battery warning light
will come on briey as a
check, when you turn on
the ignition. Then it
should go out when the
engine is started.
If the light does not come on when you start your
vehicle, have your vehicle serviced right away. This
condition may indicate your battery warning light is
not functioning properly. If this light comes on while
you are driving, be sure to turn off accessories such
as the radio and climate control system. Have your
vehicle serviced right away.
Up-Shift Light
Your vehicle may have an up-shift light. When this
light comes on, you should shift to the next
higher gear if weather, road, and traffic conditions
allow you to.This light is located in
your instrument panel
cluster to the left of
the speedometer.
SeeManual Transaxle Operation on page 112for
more information.
Brake System Warning Light
This light should come on briey when you turn
the ignition to RUN. If it does not come on
then, have it xed so it will be ready to warn you if
there is a problem.
United States Only
United StatesCanada
170
ProCarManuals.com

Anti-Lock Brake System
Warning Light
If your vehicle has anti-lock brakes, the anti-lock
brake system (ABS) warning light will come
on briey, as a check, when you start your vehicle.
If it does not, have your vehicle serviced so that
the light works properly when it needs to.
The ABS light is located
in the instrument panel
cluster, to the left of
the engine coolant
temperature gage.
If the light stays on longer than a few seconds
after you start your engine, or comes on and stays
on while you are driving, try resetting the system.To reset the system, do the following:
1. If you are driving, pull over when it is safe to
do so.
2. Be sure the vehicle is in PARK (P).
3. Turn off the ignition.
4. Then restart the engine.
If the light remains on after resetting the system or
comes on again while driving, your vehicle
needs service. If the ABS light is on, but the
regular brake system warning light is not on, the
anti-lock brakes are not working properly, but
the regular brakes are still functioning. Have your
vehicle serviced right away. If both brake lights
are on, you do not have anti-lock brakes, and
there’s a problem with your regular brakes as well.
Have your vehicle towed for service. SeeTowing
Your Vehicle on page 256.
The anti-lock brake system warning light should
come on briey when you turn the ignition
key to RUN. If the light does not come on then,
have it xed so it will be ready to warn you if there
is a problem.
172
ProCarManuals.com

Engine Coolant Temperature Gage
This gage measures the
temperature of the
vehicle’s engine coolant.
If the pointer moves into the shaded area, your
engine is too hot, the CHK GAGE message
will appear and a chime will sound to alert you to
the engine coolant temperature gage. See
Check Gage Message on page 184for more
information. If you have been operating your
vehicle under normal driving conditions, you should
pull off the road and stop your vehicle, be sure
the air conditioning is off, let the engine idle for a
few minutes, then turn off the engine.On vehicles with the 2.2L engine, under severe
conditions – hot ambient temperature, steep
grades and towing – your vehicle may experience
more transaxle shifting to avoid engine coolant
overheating. This is temporary and normal under
these conditions. This does not require engine
or transaxle service.
If your engine control system detects a failure in
the engine coolant temperature circuit, the
malfunction indicator lamp light will come on. The
coolant gage may read all the way hot or cold.
The engine cooling fan will be turned on to protect
the engine and transaxle. SeeMalfunction
Indicator Lamp on page 174for more information.
Notice:Driving with the engine coolant
temperature gage indicator in the shaded area
could cause your vehicle to overheat. Your
vehicle could be damaged, and it might not be
covered by your warranty. Never drive with
the engine coolant temperature gage indicator
in the shaded area.
173
ProCarManuals.com

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, 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 270.
174
ProCarManuals.com

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.
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 you are towing a trailer, reduce the amount
of cargo being hauled as soon as it is
possible
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 key 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 retailer for service as
soon as possible.
175
ProCarManuals.com

If the Light Is On Steady
You 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 275.
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.
Did you just drive through a deep puddle of
water?
If so, your 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 272. Poor fuel
quality will cause your 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 retailer can check the vehicle. Your
retailer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.
176
ProCarManuals.com

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 in order
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.
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 retailer
can prepare the vehicle for inspection.
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.
177
ProCarManuals.com

The oil light may also come on 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.
{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.
Passlock®Warning Light
Your vehicle has a
Passlock®
theft-deterrent system.
With this system, the
security light will ash as
you open the door if your
ignition is off.
For more information, seePasslock
®on page 103.
Reduced Engine Power Light
This light will come on
briey when you start
the engine.
This light, along with the service engine soon light
will be displayed when a noticeable reduction in
the vehicle’s performance may occur. Stop the
vehicle and turn off the ignition. Wait for
10 seconds and restart your vehicle. This may
correct the condition.
178
ProCarManuals.com