2006 BUICK LACROSSE ignition

Traction Control System (TCS)
Warning Light
Your vehicle may be
equipped with the Traction
Control System (TCS), if
this warning light comes
on and stays on, there
may be a problem with the
TCS and, if equipped, the
StabiliTrak
®system.
The TCS warning light will 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.
The light will also come on if you turn the TCS off using
the TCS on/off button located near the shift lever.
If the TCS warning light stays on or 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 light still stays on
or comes back on again while you are driving, your
vehicle needs service. Have the traction control system
and, if equipped, the StabiliTrak
®system inspected
as soon as possible. SeeTraction Control System (TCS)
on page 4-10andStabiliTrak
®System on page 4-11
for more information.
Engine Coolant Temperature
Warning Light
This light tells you that
your engine is very hot.
This light will come on when you rst start the vehicle as
a check to let you know that the light is working. It will go
out after a few seconds. If the light does not come on, the
bulb may be burned out. See your GM dealer to have it
corrected.
If the light does not go out or if the light comes on and
stays on while you are driving, your vehicle may have a
problem with the cooling system. You should stop the
vehicle and turn off the engine as soon as possible to
avoid damage to the engine. A warning chime will sound
when this light is on, also.
SeeEngine Overheating on page 5-27.
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Engine Coolant Temperature Gage
The vehicle has a gage
that shows the engine
coolant temperature.
If the gage pointer moves towards the H, the engine is
too hot.
This reading indicates the same thing as the warning
light. It means that the engine coolant has overheated.
If the vehicle has been operating under normal driving
conditions, pull off the road, stop the vehicle, and turn off
the engine as soon as possible. SeeEngine Overheating
on page 5-27.
Low Coolant Warning Light
If equipped, this light
comes on briey when
you turn your ignition on
as a bulb check only.
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.
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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,
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 5-3.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
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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.
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
Your vehicle may have this
feature. If the vehicle has
an oil problem, this light
may stay on after the
engine is started, or come
on while you are driving.
This light indicates that oil is not going through the engine
quickly enough to keep it lubricated. The engine could be
low on oil or could have some other oil problem. Have it
xed right away.
The oil light could also come on in the following
situations:
The light will come on briey when the ignition is
turned on to show that it is working properly. If it
does not come on with the ignition on, there may
be a problem with the fuse or bulb. Have it xed
right away.
Sometimes when the engine is idling at a stop, a
chime will sound and the light may blink on and off.
This is normal.
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Highbeam On Light
This light will come on
when the high-beam
headlamps are in use.
SeeHeadlamp High/Low-Beam Changer on page 3-8.
Headlamps Suggested Light
This light will come
on when the use of
headlamps is suggested.
Low Washer Fluid Warning Light
This light will come on
briey when the ignition is
on. If the light stays on, a
chime will sound indicating
your windshield washer
uid is low.
SeeWindshield Washer Fluid on page 5-38for more
information.
Door Ajar Light
When the ignition is on, this
light will stay on until all
doors are closed and
completely latched.
You will hear a chime if a door is unlatched after the
engine is started and the vehicle is not in PARK (P).
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Trunk Ajar Light
This light will come on
and a chime will sound
if the trunk is ajar and the
vehicle is not in Park (P).
Try closing the trunk again. Never drive with the
trunk open.
Service Vehicle Soon Light
If equipped, this light will
come on and a chime will
sound if it detects a
problem on the vehicle.
Fuel Gage
The fuel gage indicates
about how much fuel
is left in the fuel tank
when the ignition is on.
When the indicator nears empty, there is still a little fuel
left, but you should get more fuel soon.
Here are four things that some owners ask about. All
these things are normal and do not indicate that anything
is wrong with the fuel gage:
At the gas station, the pump shuts off before the
gage reads full.
It takes more, or less, fuel to ll up than the gage
reads. For example, the gage reads half full, but it
took more, or less, than half of the tank’s capacity
to ll it.
The gage pointer may move while cornering, braking
or accelerating.
The gage may not indicate empty when the ignition
is turned off.
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Low Fuel Warning Light
If the vehicle’s fuel is low, a light on the fuel gage,
if equipped, will come on and a chime will sound
periodically until fuel is added to the fuel tank.
It will also come on for a few seconds when the ignition
is turned on as a check to indicate it is working. If it
does not come on then, have it xed.
For vehicles with a DIC, a LOW FUEL message
will appear. SeeDIC Warnings and Messages
on page 3-59for more information.
Check Gas Cap Light
If equipped, this light will
come on and a chime will
sound if your gas cap is
not securely fastened.
SeeMalfunction Indicator Lamp on page 3-41and
Filling the Tank on page 5-8for more information.
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Driver Information Center (DIC)
Your vehicle may have a Driver Information Center (DIC).
All messages will appear in the DIC display located in the
instrument panel cluster, below the speedometer. The
DIC buttons are located on the center of the instrument
panel, below the center outlets.
The DIC comes on when the ignition is on. After a
short delay, the DIC on the uplevel vehicle will display the
WELCOME DRIVER (1 or 2) if a personalized key 1 or 2
is used, and then the information that was last displayed
before the engine was turned off.
The DIC on the base level vehicle displays the odometer
and trip odometers only.
The DIC on the uplevel vehicle displays the odometer,
trip odometers, fuel economy, trip computer, vehicle
system, and compass display information. It also displays
warning messages if a system problem is detected. In
addition, the DIC on the uplevel vehicle displays phone
numbers that are called using the OnStar
®system, if
equipped. SeeOnStar®System on page 2-38.The outside air temperature automatically appears in
the bottom right corner of the uplevel DIC display when
viewing the trip/odometer screens, fuel screens and
some of the gages screens. If the outside air temperature
is at or below 37°F (3°C), the temperature reading will
toggle between displaying the outside temperature and
the word ICE for two minutes. If there is a problem with
the system that controls the temperature display, the
letters OC (open circuit) or SC (short circuit) will appear
on the display. If this occurs, have the vehicle serviced
by your GM dealer.
The DIC on the uplevel vehicle also allows some
features to be customized or personalized. See
DIC Vehicle Personalization on page 3-75for
more information.
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