warning light BUICK LACROSSE 2010 User Guide

4-16 Instruments and Controls
bag, laptop or other electronic
device. To turn off the warning light
and or chime, remove the object
from the seat or buckle the
safety belt
Airbag Readiness Light
This light shows if there is an
electrical problem. The system
check includes the airbag sensor,
the pretensioners, the airbag
modules, the wiring and the crash
sensing and diagnostic module.
For more information on the airbag
system, seeAirbag System
on
page 2‑24.
The airbag readiness light comes on
solid and stays on for several
seconds when the vehicle is started.
Then the light goes out. If it stays on solid after the vehicle
has been started or comes on while
driving, the airbag system may not
work properly. Have the vehicle
serviced right away.
{WARNING
If the airbag readiness light stays
on after the vehicle is started or
comes on while driving, it means
the airbag system might not be
working properly. The airbags in
the vehicle might not inflate in a
crash, or they could even inflate
without a crash. To help avoid
injury, have the vehicle serviced
right away.
Passenger Airbag Status
Indicator
The vehicle has a passenger
sensing system. See
Passenger
Sensing System
on page 2‑32for
important safety information. The
instrument panel has a passenger
airbag status indicator.
When the vehicle is started, the
passenger airbag status indicator
will light the words ON and OFF for
several seconds as a system check.
If you are using remote start,
if equipped, to start the vehicle from
a distance you may not see the
system check. Then, after several
more seconds, the status indicator
will light either the word ON or OFF
to let you know the status of the
right front passenger frontal airbag.
If the word ON is lit on the
passenger airbag status indicator,
it means that the right front
passenger frontal airbag is enabled
(may inflate).

Instruments and Controls 4-17
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
frontal airbag.
If, after several seconds, both 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/retailer for service.
{WARNING
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. SeeAirbag Readiness
Light
on page 4‑16for more
information, including important
safety information.
Charging System Light
The charging system light comes on
briefly when the ignition is turned
on, but the engine is not running, as
a check to show the light is working.
It should go out when the engine is
started.
If the light stays on, or comes on
while driving, there could be a
problem with the electrical charging
system. Have it checked by your
dealer/retailer. Driving while this
light is on could drain the battery.
If a short distance must be driven
with the light on, be sure to turn off
all accessories, such as the radio
and air conditioner.
Malfunction
Indicator Lamp
A computer system called OBD II
(On-Board Diagnostics-Second
Generation) monitors operation of
the fuel, ignition, and emission
control systems. It ensures that
emissions are at acceptable levels
for the life of the vehicle, helping to
produce a cleaner environment.
This light comes on when the
ignition is on, but the engine is not
running, as a check to show it is
working. If it does not, have the
vehicle serviced by your dealer/
retailer.

4-20 Instruments and Controls
the battery has recently been
replaced or if the battery has run
down. The diagnostic system is
designed to evaluate critical
emission control systems during
normal driving. This can take
several days of routine driving.
If this has been done and the
vehicle still does not pass the
inspection for lack of OBD II
system readiness, your dealer/
retailer can prepare the vehicle
for inspection.
Brake System Warning
Light
The vehicle's hydraulic brake
system is divided into two parts.
If one part is not working, the other
part can still work and stop the
vehicle. For good braking both parts
need to working.
If the warning light comes on, there
is a brake problem. Have your brake
system inspected right away.
If the vehicle has antilock brakes,
this light should come on when the
vehicle is placed in START. If it does
not, have the vehicle serviced by
your dealer/retailer.
If the light comes on while driving,
pull off the road and stop carefully.
The pedal may be harder to push or
it can go closer to the floor. It may
take longer to stop. Try turning off
and restarting the vehicle one or two
times, if the light is still on, have the
vehicle towed for service. See
Antilock Brake System (ABS)
Warning Light
on page 4‑21and
Driving Characteristics and Towing
Tips on page 8‑54.
{WARNING
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.
Electric Parking Brake
Light
For vehicles with the Electric Park
Brake (EPB), the park brake status
light comes on when the brake is
applied. If the light continues
flashing after the park brake is

Instruments and Controls 4-21
released, or while driving, there is a
problem with the Electric Parking
Brake system. A Service Parking
Brake message may also display in
the Driver Information Center (DIC).
SeeBrake System Messages
on
page 4‑33for more information.
If the light does not come on,
or remains flashing, see you dealer/
retailer.
For vehicles with the Electric Park
Brake (EPB), the park brake
warning light should come on briefly
when ignition is placed in ON/RUN.
If it does not come on, then have it
fixed so it will be ready to warn if
there is a problem.
If this light comes on, there is a
problem with a system on the
vehicle that is causing the park
brake system to work at a reduced level. The vehicle can still be driven,
but should be taken to a dealer/
retailer as soon as possible. See
Parking Brake
on page 8‑32for
more information.
For vehicles with the uplevel cluster,
this telltale displays in the Driver
Information Center (DIC) screen.
Antilock Brake System
(ABS) Warning Light
This light comes on briefly when the
engine is started.
If the light does not come on, have it
fixed so it will be ready to warn if
there is a problem.
If the ABS light stays on, turn the
ignition off. If the light comes on while driving,
stop as soon as it is safely possible
and turn off the vehicle. Then start
the engine again to reset the
system. If the ABS light stays on,
or comes on again while driving, the
vehicle needs service. A chime may
also sound when the light comes on
steady.
If the ABS light is the only light on,
the vehicle has regular brakes, but
the antilock brakes are not
functioning.
If both lights are on, the vehicle's
antilock brakes are not functioning
and there is a problem with the
regular brakes. See your dealer/
retailer for service.
See
Brake System Warning Light
on page 4‑20.
See Brake System Messages
on
page 4‑33for all brake related
DIC messages.

4-22 Instruments and Controls
Traction Off Light
This light comes on when the
Traction Control System (TCS) has
been turned off by pressing and
releasing the traction control button.
This light also comes on and the
system turns off if there is a problem
with the traction control system.
If the light comes on and stays on
for an extended period of time while
the system is turned on, the vehicle
needs service.
SeeTraction Control System (TCS)
on page 8‑34andElectronic
Stability Control (ESC)on
page 8‑35for more information.
Electronic Stability
Control (ESC) Indicator
Light
This light comes on briefly while
starting the engine.
If it does not, have the vehicle
serviced by your dealer/retailer.
If the system is working normally the
indicator light then goes off.
If the light comes on and stays on
while driving, there could be a
problem with the ESC and the
vehicle might need service. When
this warning light is on, the ESC is
off and does not limit wheel spin.
The light flashes if the system is
active and is working to assist the
driver with directional control of the
vehicle in difficult driving conditions. For vehicles with the uplevel cluster,
this telltale is shown in the Driver
Information Center (DIC) screen.
See
Electronic Stability Control
(ESC)
on page 8‑35for more
information.
Electronic Stability
Control (ESC)/Traction
Control System (TCS)
Indicator/Warning Light
This light comes on when the
Electronic Stability Control (ESC)
system is turned off. If the Traction
Control System (TCS) is off, wheel
spin is not limited. If the ESC is off,
the system does not assist in
controlling the vehicle. Turn on the
TCS and the ESC and the warning
light turns off.

Instruments and Controls 4-23
SeeTraction Control System (TCS)on page 8‑34andElectronic
Stability Control (ESC)on
page 8‑35for more information
Tire Pressure Light
For vehicles with a tire pressure
monitoring system, this light comes
on briefly when the engine is
started. It provides information
about tire pressures and the Tire
Pressure Monitoring System.
When the Light is On Steady
This indicates that one or more of
the tires are significantly
underinflated.
A tire pressure message in the
Driver Information Center (DIC), can
accompany the light. See Tire
Messages
on page 4‑37for more information. Stop and check the
tires as soon as it is safe to do so.
If underinflated, inflate to the proper
pressure. See
Tire Pressure
on
page 9‑53for more information.
When the Light Flashes First and
Then is On Steady
This indicates that there may be a
problem with the Tire Pressure
Monitor System. The light flashes
for about a minute and stays on
steady for the remainder of the
ignition cycle. This sequence
repeats with every ignition cycle.
See Tire Pressure Monitor
Operation
on page 9‑55for more
information.
Engine Oil Pressure Light
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
(Continued)
WARNING (Continued)
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule in this manual for
changing engine oil.
The oil pressure light should come
on briefly as the engine is started.
If it does not come on have the
vehicle serviced by your dealer/
retailer.

4-24 Instruments and Controls
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and might have
some other system problem. See
your dealer/retailer.
For vehicles with the uplevel cluster
this telltale displays in the Driver
Information Center (DIC) screen.
Low Fuel Warning Light
This light, below the fuel gage,
comes on briefly when the engine is
started.
If it does not come on have the
vehicle serviced by your dealer/
retailer. If the system is working
normally the indicator light then
goes off.This light also comes on when the
fuel tank is low on fuel. When fuel is
added the light should go off. If it
does not, have your vehicle
serviced.
For vehicles with the uplevel cluster,
this telltale displays in the Driver
Information Center (DIC) screen.
Security Light
This light flashes when the security
system is activated.
For more information, see
Vehicle
Security on page 1‑13.
For vehicles with the uplevel cluster
this telltale displays in the Driver
Information Center (DIC) screen.
High-Beam on Light
This light comes on when the
high-beam headlamps are on.
See Headlamp High/Low-Beam
Changer
on page 5‑2for more
information.
Fog Lamp Light
For vehicles with fog lamps, this
light comes on when the fog lamps
are on.

Instruments and Controls 4-25
The light goes out when the fog
lamps are turned off. SeeFog
Lamps
on page 5‑5for more
information.
Taillamp Indicator Light
This light comes on when the
taillamps are on.
Cruise Control Light
This light is white whenever the
cruise control is set and turns green
when the cruise control is active.
The light goes out when the cruise
control is turned off. See Cruise
Control
on page 8‑37for more
information.
For vehicles with the uplevel cluster
this telltale will be shown in the
Driver Information Center (DIC)
screen.
Information Displays
Driver Information
Center (DIC)
The Driver Information Center (DIC)
displays information about the
vehicle. It also displays warning
messages if a system problem is
detected. See Vehicle Messages
on
page 4‑32for more information. All
messages appear in the DIC display
located in the center of the
instrument panel cluster.
On some models, the DIC may have
some warning lights or indicators
shown in the top portion of the
display. See Warning Lights, Gages,
and Indicators
on page 4‑12for
more information.
The vehicle may also have features
that can be customized through the
controls on the radio. See Vehicle
Personalization
on page 4‑38for
more information.

Instruments and Controls 4-29
station, including XM information or
CD track. It will also display
turn-by-turn navigation information if
the vehicle has a navigation radio.
The images are projected through
the HUD lens located on the driver's
side of the instrument panel.
Notice:If you try to use the HUD
image as a parking aid, you may
misjudge the distance and
damage your vehicle. Do not use
the HUD image as a parking aid.
The tap shift gear will also appear
on the HUD if the vehicle has tap
shift and it is active.
The HUD information can be
displayed in one of three languages,
English, French, or Spanish. The
speedometer reading and other
numerical values can be displayed
in either English or metric units.
The language selection is changed
through the radio and the units of
measurement is changed through
the trip computer in the Driver
Information Center (DIC). See
AM-FM Radioon page 6‑12andDriver Information Center (DIC)on page 4‑25.
HUD Display on the Vehicle
Windshield
The HUD information appears as an
image focused out toward the front
of the vehicle.
When the ignition key is turned to
ON/RUN, the HUD will display an
introductory message for a short
time, until the HUD is ready. The following indicator lights come
on the instrument panel when
activated and also appear on
the HUD:
.Turn Signal Indicators
.High-Beam Indicator Symbol
The HUD temporarily displays some
vehicle warnings, such as CHECK
TIRE PRESSURE and FUEL
LEVEL LOW when these messages
are on the DIC trip computer.
The HUD also displays the following
messages on vehicles with these
systems, when they are active:
.TRACTION CONTROL ACTIVE
.STABILITRAK ACTIVE
When the HUD is on, the
speedometer reading is continually
displayed. The current radio station
or CD track number will display for a
short period of time after the radio
or CD track status changes. This
happens whenever radio information
is changed. The speedometer size

Lighting 5-1
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . 5-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 5-2
Headlamp High/Low-Beam Changer . . . . . . . . . . . . . . . . . . . . . 5-2
Flash-to-Pass . . . . . . . . . . . . . . . . . 5-2
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . 5-2
Automatic Headlamp System . . . . . . . . . . . . . . . . . . . . . . 5-3
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . 5-3 Hazard Warning Flashers . . . . . 5-4
Turn and Lane-Change
Signals . . . . . . . . . . . . . . . . . . . . . . 5-4
Fog Lamps . . . . . . . . . . . . . . . . . . . . 5-5Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . 5-5
Dome Lamps . . . . . . . . . . . . . . . . . 5-5
Reading Lamps . . . . . . . . . . . . . . . 5-5
Sun Visor Lamps . . . . . . . . . . . . . . 5-5
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . 5-6
Exit Lighting . . . . . . . . . . . . . . . . . . . 5-6
Battery Load Management . . . . 5-6
Battery Power Protection . . . . . . 5-7
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is located
on the instrument panel on the
outboard side of the steering wheel.
Turn the control to the following
positions:
O(Off): Turns off the exterior
lamps. The knob returns to the
AUTO position after it is released.
Turn to off again to reactivate
the AUTO mode.