light BUICK LACROSSE 2006 Repair Manual

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).
3-47

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.
3-48

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.
3-49

DRIVER’S REAR DOOR AJAR
This message will display when the driver’s side
rear door is not closed properly. When this message
appears, you should make sure that the driver’s
side rear door is closed completely.
This message will display while the ignition is in RUN.
A chime will sound when the ignition is shifted out of
PARK (P). Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
ENGINE COOLANT HOT
Notice:If you drive your vehicle while the engine is
overheating, severe engine damage may occur. If an
overheat warning appears on the instrument panel
cluster and/or DIC, stop the vehicle as soon as
possible. Do not increase the engine speed above
normal idling speed. SeeEngine Overheating on
page 5-27for more information.
This message will display when the engine coolant
temperature is too hot. The engine coolant temperature
warning light will also appear on the instrument panel
cluster. SeeEngine Coolant Temperature Warning Light
on page 3-40andEngine Coolant Temperature Gage
on page 3-41for more information.
To avoid added strain on the engine, turn off the air
conditioner if it is on. When the coolant temperature
returns to normal, the air conditioner can be turned
back on.
This message will display only when the ignition is in
RUN. A chime will sound continuously when this
message is displayed. Press any of the DIC buttons to
acknowledge this message and to clear it from the
screen.
3-62

This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
HEADLAMPS SUGGESTED
This message will display when the amount of available
light outside of the vehicle is low, or the windshield wipers
have been on for approximately 30 seconds, and the
exterior lamps control is off or in the park lamps position.
This message informs the driver that turning on the
exterior lamps is recommended. SeeExterior Lamps
on page 3-13for more information.
This message will display while the ignition is in RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
HOOD AJAR
This message will display when the hood is not closed
properly. When this message appears, you should make
sure that the hood is closed completely. SeeHood
Release on page 5-11.
This message will display while the ignition is in RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
HOT TRANS FLUID
This message will display when the transaxle uid in
your vehicle is too hot. Stop the vehicle and allow it to idle
until it cools down. If the warning message continues to
display, have the vehicle serviced by your GM dealer as
soon as possible.
This message will display and a chime will sound only
while the ignition is in RUN. Press any of the DIC
buttons to acknowledge this message and to clear it
from the screen.
3-63

LEFT REAR TURN LAMP OUT
This message will display when the left rear turn signal
bulb needs to be replaced. SeeTaillamps, Turn Signal,
Sidemarker, Stoplamps and Back-up Lamps on
page 5-54.
This message will display while the ignition is in RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
LOW BRAKE FLUID
This message will display when the brake uid level
is low. Fill the brake master cylinder to the proper level.
SeeEngine Compartment Overview on page 5-12for
the location of the brake master cylinder reservoir. Also,
seeBrakes on page 5-39for proper uid level.
The brake system warning light will also appear on the
instrument panel cluster when this message appears
on the DIC. SeeBrake System Warning Light on
page 3-38.This message will display and a chime will sound only
while the ignition is in RUN. Press any of the DIC
buttons to acknowledge this message and to clear it
from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
LOW FUEL
This message will display when your vehicle is low
on fuel. You should rell the tank as soon as possible.
SeeFuel Gage on page 3-48andFilling the Tank
on page 5-8for more information.
The message will display and a chime will sound while
the ignition is in RUN. Press any of the DIC buttons
to acknowledge this message and to clear it from
the screen.
If the condition still exists, the message will re-appear
when the engine is turned on.
3-65

LOW OIL LEVEL
This message will display when the vehicle’s engine oil
is low. Fill the oil to the proper level as soon as
possible. SeeEngine Compartment Overview on
page 5-12for the engine oil ll location. Also, see
Engine Oil on page 5-15for information on the kind of
oil to use and the proper oil level.
The message will display and a chime will sound while
the ignition is in RUN. Press any of the DIC buttons
to acknowledge this message and to clear it from
the screen.
This message will continue to display for two seconds if
it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
LOW OIL PRESSURE
Notice:If the LOW OIL PRESSURE warning
message appears on the DIC display, stop the
vehicle immediately. Do not drive the vehicle until
the cause of the low oil pressure is corrected.
Severe engine damage can result from driving a
vehicle with low oil pressure. SeeEngine Oil
on page 5-15for more information.
This message will display when the vehicle’s engine oil
pressure is low. The oil pressure light will also appear
on the instrument panel cluster. SeeOil Pressure Light
on page 3-44.
Stop the vehicle immediately, as engine damage can
result from driving a vehicle with low oil pressure. Have
the vehicle serviced by your GM dealer as soon as
possible when this message is displayed.
This message will display only when the ignition is in
RUN. A chime will sound continuously when this
message is displayed.
This message cannot be acknowledged and cleared
from the screen. This message will re-display for a
few seconds if the condition still exists when the
engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
3-66

LOW WASHER FLUID
This message will display when the windshield washer
uid is low. Fill the windshield washer reservoir as soon
as possible. SeeEngine Compartment Overview on
page 5-12for the location of the windshield washer
reservoir. Also, seeWindshield Washer Fluid on
page 5-38for more information.
This message will display and a chime will sound only
when the ignition is in RUN. Press any of the DIC
buttons to acknowledge this message and to clear it
from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
PARKING BRAKE ON
This message will display to alert the driver when the
vehicle’s parking brake is on, the ignition is in RUN,
and the vehicle speed is greater than 5 mph (8 km/h).
Release the parking brake before driving. SeeParking
Brake on page 2-30for more information.The brake light will also appear on the instrument panel
cluster when this message appears on the DIC. See
Brake System Warning Light on page 3-38.
A chime will sound continuously while this message
is displayed if driving above 5 mph (8 km/h). Press any
of the DIC buttons to acknowledge this message
and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
PARK LAMPS ON
This message will display to alert the driver when the
headlamps or parking lamps are on while the ignition
is off and the driver’s door is opened. SeeExterior
Lamps on page 3-13for more information.
A chime will sound continuously while this message is
displayed. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
3-67

RIGHT FRONT TURN LAMP OUT
This message will display when the right front turn
signal bulb needs to be replaced. SeeFront Turn Signal
and Parking Lamps on page 5-53.
This message will display while the ignition is in RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
RIGHT REAR TURN LAMP OUT
This message will display when the right rear turn signal
bulb needs to be replaced. SeeTaillamps, Turn Signal,
Sidemarker, Stoplamps and Back-up Lamps on
page 5-54.
This message will display while the ignition is in RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
SERVICE ABS SYSTEM
If the vehicle has the Anti-Lock Brake System (ABS), this
message will display when the system is not functioning
properly. Have the brake system serviced by your
GM dealer as soon as possible.
The anti-lock brake system warning light will also
appear on the instrument panel cluster when this
message appears on the DIC. SeeAnti-Lock Brake
System Warning Light on page 3-39.
This message will only display while the ignition is in
RUN. Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
3-70

SERVICE BRAKE SYSTEM
This message will display when a problem with the
brake system has been detected. Have your vehicle
serviced by your GM dealer as soon as possible.
The brake system warning light will also appear on the
instrument panel cluster when this message appears
on the DIC. SeeBrake System Warning Light on
page 3-38.
This message will only display while the ignition is in
RUN. Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
SERVICE PARK LAMPS
This message will display when there is a problem with
the park lamps. Check to see if the park lamp fuse is
blown and replace the fuse if necessary. SeeFuses
and Circuit Breakers on page 5-93andInstrument
Panel Fuse Block on page 5-94for more information. If
changing the fuse does not correct the problem, see your
GM dealer.This message will only display while the ignition is in
RUN. Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message will continue to display for two seconds
if it has not been acknowledged when the engine is
turned off. It will also re-display for two seconds if the
message has been acknowledged, but the condition still
exists when the engine is turned off.
If the condition still exists, the message will re-appear
when the engine is turned on.
SERVICE STABILITY SYSTEM
If your vehicle has StabiliTrak®, this message will
display if there has been a problem detected with
StabiliTrak
®. A warning light will also appear on
the instrument panel cluster. SeeTraction Control
System (TCS) Warning Light on page 3-40. See
StabiliTrak
®System on page 4-11for more information.
If this message turns 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 and then back on. If
this message still stays on or turns back on again while
you are driving, your vehicle needs service. Have the
StabiliTrak
®System inspected by your GM dealer as
soon as possible.
3-71