2009 BUICK LACROSSE warning light

SERVICE PARK LAMPS
This message displays 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 5-99andInstrument Panel Fuse Block
on page 5-100for more information. If changing the fuse
does not correct the problem, see your dealer/retailer.
This message only displays while the ignition is in
ON/RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine
is turned off. It also re-displays 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 re-appears
when the engine is turned on.
SERVICE STABILITY SYSTEM
If your vehicle has StabiliTrak, this message displays if
there has been a problem detected with StabiliTrak.
A warning light also appears on the instrument panel
cluster. SeeTraction Control System (TCS) Warning
Light on page 3-37. SeeStabiliTrak
®System on
page 4-6for 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 dealer/
retailer as soon as possible.
This message displays only while the ignition is in
ON/RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine
is turned off. It also re-displays 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 re-appears
when the engine is turned on.
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SERVICE THEFT SYSTEM
This message displays when there is a problem with
the theft-deterrent system programmed in the key. A fault
has been detected in the system which means that the
system is disabled and it is not protecting the vehicle.
The vehicle usually restarts; however, you may want to
take the vehicle to your dealer/retailer before turning off
the engine. SeePASS-Key
®III Electronic Immobilizer
Operation on page 2-19for more information.
This message displays and a chime sounds only while
the ignition is in ON/RUN. Press any of the DIC buttons
to acknowledge this message and to clear it from the
screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine
is turned off. It also re-displays 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 re-appears
when the engine is turned on.
SERVICE TIRE MONITOR SYSTEM
On vehicles with the Tire Pressure Monitor
System (TPMS), this message displays if a part
on the TPMS is not working properly. The tire pressure
light also ashes and then remains on during the same
ignition cycle. SeeTire Pressure Light on page 3-39.
Several conditions may cause this message to appear.
SeeTire Pressure Monitor Operation on page 5-64for
more information. If the warning comes on and stays
on, there may be a problem with the TPMS. See your
dealer/retailer.
This message displays while the ignition is in ON/RUN.
Press any of the DIC buttons to acknowledge this
message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine
is turned off. It also re-displays 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 re-appears
when the engine is turned on.
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SERVICE TRACTION SYSTEM
This message displays when the traction system is not
functioning properly. A warning light also appears on the
instrument panel cluster. SeeTraction Control System
(TCS) Warning Light on page 3-37. SeeTraction Control
System (TCS) on page 4-7orEnhanced Traction System
(ETS) on page 4-8for more information. Have the system
serviced by your dealer/retailer as soon as possible.
This message displays only while the ignition is in
ON/RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine
is turned off. It also re-displays 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 re-appears
when the engine is turned on.
SERVICE VARIABLE EFFORT
STEERING
If your vehicle has variable effort steering, this message
displays when if this system is not functioning properly.
SeeSteering on page 4-10for more information.
Have the system serviced by your dealer/retailer
as soon as possible.This message displays only while the ignition is in
ON/RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine
is turned off. It also re-displays 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 re-appears
when the engine is turned on.
SERVICE VEHICLE SOON
This message displays when a non-emissions related
malfunction occurs. Have the vehicle serviced by
your dealer/retailer as soon as possible.
This message displays only while the ignition is in
ON/RUN. Press any of the DIC buttons to acknowledge
this message and to clear it from the screen.
This message continues to display for two seconds
if it has not been acknowledged when the engine
is turned off. It also re-displays 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 re-appears
when the engine is turned on.
3-71

Braking
SeeBrake System Warning Light on page 3-35.
Braking action involves perception time and reaction
time. Deciding to push the brake pedal is perception
time. Actually doing it is reaction time.
Average reaction time is about three-fourths of a
second. But that is only an average. It might be less
with one driver and as long as two or three seconds or
more with another. Age, physical condition, alertness,
coordination, and eyesight all play a part. So do alcohol,
drugs, and frustration. But even in three-fourths of a
second, a vehicle moving at 60 mph (100 km/h) travels
66 feet (20 m). That could be a lot of distance in an
emergency, so keeping enough space between
the vehicle and others is important.
And, of course, actual stopping distances vary greatly
with the surface of the road, whether it is pavement
or gravel; the condition of the road, whether it is
wet, dry, or icy; tire tread; the condition of the brakes;
the weight of the vehicle; and the amount of brake force
applied.Avoid needless heavy braking. Some people drive
in spurts — heavy acceleration followed by heavy
braking — rather than keeping pace with traffic. This is a
mistake. The brakes might not have time to cool between
hard stops. The brakes will wear out much faster with a
lot of heavy braking. Keeping pace with the traffic and
allowing realistic following distances eliminates a lot of
unnecessary braking. That means better braking and
longer brake life.
If the engine ever stops while the vehicle is being driven,
brake normally but do not pump the brakes. If the brakes
are pumped, the pedal could get harder to push down. If
the engine stops, there will still be some power brake
assist but it will be used when the brake is applied. Once
the power assist is used up, it can take longer to stop and
the brake pedal will be harder to push.
Adding non-dealer/non-retailer accessories can affect
vehicle performance. SeeAccessories and Modifications
on page 5-3.
4-4

Antilock Brake System (ABS)
This vehicle has the Antilock Brake System (ABS), an
advanced electronic braking system that will help
prevent a braking skid.
When the engine is started and the vehicle begins to
drive away, ABS checks itself. A momentary motor
or clicking noise might be heard while this test is going
on, and it might even be noticed that the brake pedal
moves a little. This is normal.
If there is a problem with
ABS, this warning light
stays on. SeeAntilock
Brake System (ABS)
Warning Light on
page 3-36.
Let us say the road is wet and you are driving safely.
Suddenly, an animal jumps out in front of you. You slam
on the brakes and continue braking. Here is what
happens with ABS:
A computer senses that the wheels are slowing down. If
one of the wheels is about to stop rolling, the computer
will separately work the brakes at each wheel.ABS can change the brake pressure to each wheel, as
required, faster than any driver could. This can help
the driver steer around the obstacle while braking hard.
As the brakes are applied, the computer keeps receiving
updates on wheel speed and controls braking pressure
accordingly.
Remember: ABS does not change the time needed to get
a foot up to the brake pedal or always decrease stopping
distance. If you get too close to the vehicle in front of you,
there will not be enough time to apply the brakes if that
vehicle suddenly slows or stops. Always leave enough
room up ahead to stop, even with ABS.
Using ABS
Do not pump the brakes. Just hold the brake pedal
down rmly and let antilock work. The antilock pump or
motor might be heard operating and the brake pedal
might be felt to pulsate, but this is normal.
Braking in Emergencies
ABS allows the driver to steer and brake at the same
time. In many emergencies, steering can help more than
even the very best braking.
4-5

StabiliTrak®System
The vehicle may be equipped with a vehicle stability
enhancement system called StabiliTrak. It is an
advanced computer controlled system that assists with
directional control of the vehicle in difficult driving
conditions.
StabiliTrak activates when the computer senses a
discrepancy between the intended path and the direction
the vehicle is actually traveling. StabiliTrak selectively
applies braking pressure at any one of the vehicle’s
brakes to assist the driver with keeping the vehicle on
the intended path.
When the system activates, STABILITY CONTROL
ACTIVE comes on the Driver Information Center (DIC).
SeeDIC Warnings and Messages on page 3-56.
The system may be heard or felt while it is working.
This is normal. Continue to steer the vehicle in the
intended direction.The Traction Control
warning light comes on the
instrument panel cluster
when a problem is
detected with StabiliTrak.
If there is a problem detected with StabiliTrak, a
SERVICE STABILITY SYSTEM or STABILITY
CONTROL OFF message will be displayed on the DIC.
When this message is displayed, the system is not
operational. Driving should be adjusted accordingly.
If cruise control is being used when StabiliTrak activates,
the cruise control automatically disengages. The
cruise control can be reengaged when road conditions
allow. SeeCruise Control on page 3-10for more
information.
4-6

This light, along with the
TRACTION CONTROL
OFF message, will display
briey on the DIC when
TCS is not on.
If there is a problem with the system, the SERVICE
TRACTION SYSTEM message will also come on in the
DIC. When this warning light is on, the system will
not limit wheel spin. Adjust driving accordingly.
To limit wheel spin, especially in slippery road
conditions, TCS should always be left on. But the
system can be turned off if needed. TCS should be
turned off if the vehicle ever gets stuck in sand, mud or
snow and rocking the vehicle is required. SeeRocking
Your Vehicle to Get It Out on page 4-20andIf Your
Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 4-19.
To turn TCS on or off, press the TCS button located
above the radio.When TCS is turned off, the TCS warning light will
come on along with the TRACTION CONTROL OFF
message on the DIC. It will turn off when TCS is turned
back on. If TCS is limiting wheel spin when the TCS
button is pressed, the TCS warning light will come
on and TCS will turn off right away.
Adding non-dealer/non-retailer accessories can affect
the vehicle’s performance. SeeAccessories and
Modifications on page 5-3for more information.
Enhanced Traction System (ETS)
The vehicle may have an Enhanced Traction System
(ETS) that limits wheel spin. This is especially useful in
slippery road conditions. The system operates only if
it senses that one or both of the front wheels are
spinning or beginning to lose traction. When this
happens, the system reduces engine power and may
also upshift the transmission to limit wheel spin.
The system may be heard or felt while it is working, but
this is normal.
The TRACTION CONTROL ACTIVE message on the
Driver Information Center (DIC) will be displayed
when the system is limiting wheel spin.
4-8

If cruise control is being used when ETS begins to limit
wheel spin, the cruise control automatically disengages.
The cruise control can be reengaged when road
conditions allow. SeeCruise Control on page 3-10for
more information.
ETS operates in all transmission shift lever positions. But
the system can upshift the transmission only as high as
the chosen shift lever position, so use the lower gears
only when necessary. SeeAutomatic Transmission
Operation on page 2-26for more information.
This warning light, along
with the TRACTION
CONTROL OFF message,
will display briey on the
DIC when ETS is not on.
If there is a problem with the system, the SERVICE
TRACTION SYSTEM message will also come on in the
DIC. When this warning light is on, the system will
not limit wheel spin. Adjust your driving accordingly.To limit wheel spin, especially in slippery road
conditions, ETS should always be left on. But the
system can be turned off if needed. ETS should be
turned off if the vehicle ever gets stuck in sand, mud or
snow and rocking the vehicle is required. SeeIf Your
Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 4-19.
To turn ETS on or off,
press the Traction Control
button located above
the radio.
When ETS is turned off, the ETS warning light will come
on along with the TRACTION CONTROL OFF message
on the DIC. It will turn off when ETS is turned back on. If
ETS is limiting wheel spin when the traction control button
is pressed, the ETS warning light comes on and ETS will
turn off right away.
4-9