BUICK LACROSSE 2007 Owner's Manual

Speedometer and Odometer
Your speedometer lets you see your speed
in both miles per hour (mph) and kilometers
per hour (km/h).
Your vehicle’s odometer works together with the
driver information center. You can set a Trip A and
Trip B odometer. See “Trip Information” under
DIC Operation and Displays on page 200.
The odometer mileage can be checked without the
vehicle running. Simply press the odometer/trip
switch on the instrument panel cluster.
If your vehicle ever needs a new odometer
installed, the new one will be set to the correct
mileage total of the old odometer.
Tachometer
The tachometer displays the engine speed in
thousands of revolutions per minute (rpm).
Safety Belt Reminder Light
When the key is turned to RUN or START, a
chime will come on for several seconds to remind
people to fasten their safety belts, unless the
driver’s safety belt is already buckled.
The safety belt light will
also come on and stay
on for several
seconds, then it will
ash for several more.
This chime and light will be repeated if the driver
remains unbuckled and the vehicle is in motion.
If the driver’s belt is already buckled, neither
the chime nor the light will come on.
181

Passenger Safety Belt
Reminder Light
Several seconds after the key is turned to RUN or
START, a chime will sound for several seconds to
remind the front passenger to buckle their safety
belt. This would only occur if the passenger airbag
is enabled. SeePassenger Sensing System on
page 75for more information. The passenger
safety belt light will also come on and stay on for
several seconds, then it will ash for several more.
This chime and light will
be repeated if the
passenger remains
unbuckled and
the vehicle is in motion.
If the passenger’s safety belt is buckled, neither
the chime nor the light will come on.
Airbag Readiness Light
There is an airbag readiness light on the
instrument panel, which shows the airbag symbol.
The system checks the airbag’s electrical
system for malfunctions. The system check
includes the airbag modules, the wiring and the
crash sensing and diagnostic module. For
more information on the airbag system, seeAirbag
System on page 66.
This light will come on
when the vehicle is
started, and it will ash
for a few seconds. Then
the light should go out.
This means the system is functioning properly.
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If the airbag readiness light stays on after the
vehicle is started, or comes on as the vehicle is
being driven, there may be an electrical problem
and the airbag system may not work properly.
Have the vehicle serviced right away.
{CAUTION:
If the airbag readiness light stays on after
you start your vehicle, it means the airbag
system may not be working properly. The
airbags in your vehicle may not inate in
a crash, or they could even inate without
a crash. To help avoid injury to yourself
or others, have your vehicle serviced right
away if the airbag readiness light stays on
after you start your vehicle.
The airbag readiness light should ash for a few
seconds 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.
Passenger Airbag Status Indicator
Your vehicle has a passenger sensing system. The
passenger airbag status indicator on the instrument
panel will be visible when you turn your ignition key
to RUN or START. SeePassenger Sensing System
on page 75for more information.
The passenger airbag
status indicator will
light ON and OFF for
several seconds
as a system check.
If you use remote start to start your vehicle from a
distance, if your vehicle has this feature, you may
not see the system check. Then, after several more
seconds, the status indicator will light either ON or
OFF to let you know the status of the right front
passenger’s frontal airbag.
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If the word ON is lit on the passenger airbag
status indicator, it means that the right front
passenger’s frontal airbag is enabled (may inate).
{CAUTION:
If the on indicator comes on when you have
a rear-facing child restraint installed in the
right front passenger’s seat, it means that
the passenger sensing system has not
turned off the passenger’s frontal airbag. A
child in a rear-facing child restraint can be
seriously injured or killed if the right front
passenger’s airbag inates. This is
because the back of the rear-facing child
restraint would be very close to the
inating airbag. Do not use a rear-facing
child restraint in the right front passenger’s
seat if the airbag is turned on.Your vehicle has a rear seat that will accommodate
a rear-facing child restraint. A label on your sun
visor says, “Never put a rear-facing child seat
in the front.” This is because the risk to the
rear-facing child is so great, if the airbag deploys.{CAUTION:
Even though the passenger sensing
system is designed to turn off the
passenger’s frontal airbag if the system
detects a rear-facing child restraint, no
system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend
that rear-facing child restraints be secured
in the rear seat, even if the airbag is off.
If the word OFF is lit on the airbag status indicator,
it means that the passenger sensing system has
turned off the right front passenger’s frontal airbag.
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SeePassenger Sensing System on page 75for
more on this, including important safety
information.
If, after several seconds, all status indicator lights
remain on, or if there are no lights at all, there
may be a problem with the lights or the passenger
sensing system. See your dealer for service.
{CAUTION:
If the off indicator and the airbag
readiness light ever come on together, it
means that something may be wrong with
the airbag system. If this ever happens,
have the vehicle serviced promptly,
because an adult-size person sitting in the
right front passenger seat may not have
the protection of the frontal airbag. See
Airbag Readiness Light on page 182.
Charging System Light
This light comes on
briey when the ignition
is turned on, as a
check to show that it is
working. Then it
should go out.
If it stays on, or comes on while the vehicle is being
driven, a chime will sound and there may be a
problem with the charging system. It could indicate
that the vehicle has a loose accessory belt or
another electrical problem. Have it checked right
away. Driving while this light is on could drain the
battery and result in the engine suddenly stopping.
If the vehicle must be driven a short distance with
the light on, be certain to turn off all unnecessary
electrical loads, such as the radio, heater fan,
air conditioning fan, and heated seats.
185

Brake System Warning Light
Your vehicle’s hydraulic brake system is divided
into two parts. If one part is not 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 and the parking
brake is not applied, there is a brake problem.
Have your brake system inspected right away.
This light should come
on briey when you turn
the ignition key 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.
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, a
chime will sound and you should 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 325.
{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.
186

Anti-Lock Brake System
Warning Light
Your vehicle may have
the Anti-Lock Brake
System (ABS).
This 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 anti-lock
portion of the brake system. If the brake system
warning light is not on, you still have brakes,
but you do not have anti-lock brakes. SeeBrake
System Warning Light on page 186.
If the light stays on, turn the ignition to 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 whileyou 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 186.
The ABS 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.
Traction Control System (TCS)
Warning Light
Your vehicle may
have a Traction
Control System (TCS)
warning light.
If this warning light comes on and stays on, there
may be a problem with the TCS and, if your
vehicle has this feature, the StabiliTrak
®system.
187

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.
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 your
vehicle has this feature, the StabiliTrak
®system
inspected as soon as possible. SeeTraction
Control System (TCS) on page 294and
StabiliTrak
®System on page 296for 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 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 367.
188

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 367.
Low Coolant Warning Light
If your vehicle has this
light, it comes on briey
when you turn your
ignition on as a
bulb check only.
189

Tire Pressure Light
This light should come
on briey as you start
the engine.
This light will also come on when one or more of
your tires is signicantly under-inated. Stop
and check your tires as soon as it is safe to do so.
If underinated, inate them to the proper
pressure. SeeTires on page 402This light will
ash for 60 seconds and then turn on solid
if a problem is detected with the Tire Pressure
Monitor System. SeeTire Pressure Monitor
System on page 411.
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.
190