Instruments BUICK LACROSSE 2010 Owner's Guide

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.

4-26 Instruments and Controls
DIC Operation and Displays
The DIC has different displays
which can be accessed by using the
DIC buttons located on the turn
signal lever located on the left side
of the steering wheel. The DIC
displays trip, fuel, vehicle system
information, and warning messages
if a system problem is detected.
The bottom of the DIC display
shows what position the shift lever
is in, the odometer, and the direction
the vehicle is driving.
In cold weather the DIC display may
change slowly. This is normal and
will move more quickly as the
vehicle's interior temperature rises.DIC Buttons
MENU:
Press to get to the
Trip/Fuel Menu and the Vehicle
Information Menu.
w x(Thumbwheel): Use to scroll
through the items in each menu.
A small marker will move across the
bottom of the page as you scroll
through the items. This shows
where each page is in the menu.
SET (Set/Clear): Press to set or
clear the menu item when it is
displayed.
Trip/Fuel Menu Items
Press MENU on the turn signal
lever until Trip/Fuel Information
Menu is displayed. Use
w xto
scroll through the following menu
items:
.Digital Speedometer
.Trip 1
.Trip 2
.Fuel Range
.Average Fuel Economy
.Average Vehicle Speed
.Timer
.Turn-by-Turn
Digital Speedometer
The speedometer shows how fast
the vehicle is moving in either
kilometers per hour (km/h) or
miles per hour (mph). The
speedometer cannot be reset.

Instruments and Controls 4-27
Trip 1 and Trip 2
This display shows the current
distance traveled, in either
kilometers (km) or miles (mi), since
the last reset for the trip odometer.
The trip odometer can be reset to
zero by pressing SET while the trip
odometer display is showing.
Fuel Range
This display shows the approximate
distance the vehicle can be driven
without refueling. The fuel range
estimate is based on an average of
the vehicle's fuel economy over
recent driving history and the
amount of fuel remaining in the fuel
tank. Fuel range cannot be reset.
Average Fuel Economy
This display shows the approximate
average liters per 100 kilometers
(L/100 km) or miles per
gallon (mpg). This number is
calculated based on the number of
L/100 km (mpg) recorded since the
last time this menu item was reset.The fuel economy can be reset by
pressing SET while the Average
Fuel Economy display is showing.
Average Vehicle Speed
This display shows the average
speed of the vehicle in miles per
hour (mph) or kilometers per
hour (km/h). This average is
calculated based on the various
vehicle speeds recorded since the
last reset of this value. The average
speed can be reset by pressing SET
while the Average Vehicle Speed
display is showing.
Timer
This display can be used as a timer.
To start the timer, press SET while
Timer is displayed. The display will
show the amount of time that has
passed since the timer was last
reset, not including time the ignition
is off. Time will continue to be
counted as long as the ignition is
on, even if another display is being
shown on the DIC. The timer will
record up to 99 hours, 59 minutes
and 59 seconds (99:59:59) afterwhich the display will return to zero.
To stop the timer, press SET briefly
while Timer is displayed. To reset
the timer to zero, press and
hold SET.
Turn-by-Turn
This display is used for the OnStar
or Navigation System Turn-by-Turn
guidance. See
OnStar
®Systemon
page 4‑43or the Navigation
manual, if the vehicle has
navigation, for more information.
Vehicle Information Menu
Items
Press MENU on the turn signal
lever until Vehicle Information Menu
is displayed. Use
w xto scroll
through the following menu items:
.Unit
.Tire Pressure
.Remaining Oil Life

4-28 Instruments and Controls
Unit
Move
w xto switch between
Metric or US when the Unit display
is active. Press SET to confirm the
setting. This will change the
displays on the cluster and DIC to
either metric or English (US)
measurements.
Tire Pressure
The display will show a vehicle with
the approximate pressures of all
four tires. Tire pressure is displayed
in either kilopascal (kPa) or pounds
per square inch (psi). See Tire
Pressure Monitor System
on
page 9‑54and Tire Pressure
Monitor Operationon page 9‑55for
more information.
Remaining Oil Life
This display shows an estimate of
the oil's remaining useful life.
If Remaining Oil Life 99% is
displayed, that means 99% of the
current oil life remains. When the remaining oil life is low,
the CHANGE ENGINE OIL SOON
message will appear on the display.
See
Engine Oil Messages
on
page 4‑35. The oil should changed
as soon as possible. See Engine Oil
on page 9‑11. In addition to the
engine oil life system monitoring the
oil life, additional maintenance is
recommended in the Maintenance
Schedule in this manual. See
Scheduled Maintenance
on
page 10‑2for more information.
Remember, the Oil Life display must
be reset after each oil change. It will
not reset itself. Also, be careful not
to reset the Oil Life display
accidentally at any time other than
when the oil has just been changed.
It cannot be reset accurately until
the next oil change. To reset the
engine oil life system press SET
while the Oil Life display is active.
See Engine Oil Life System
on
page 9‑13.
Compass
The vehicle may have a compass
display in the Driver Information
Center (DIC). See Compass
on
page 4‑8for more information.
Head-Up Display (HUD)
{WARNING
If the HUD image is too bright or
too high in your field of view, it
may take you more time to see
things you need to see when it is
dark outside. Be sure to keep the
HUD image dim and placed low in
your field of view.
For vehicles with the Head-Up
Display (HUD), some information
concerning the operation of the
vehicle is projected onto the
windshield. This includes the
speedometer reading, RPM reading,
transmission position, outside air
temperature, compass heading and
a brief display of the current radio

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