service indicator BUICK LACROSSE 2010 Owner's Manual

Introduction v
A circle with a slash through it is a
safety symbol which means“Do
Not,” “Do not do this” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message, gage,
or indicator.
M: This symbol is shown when
you need to see your owner manual
for additional instructions or
information.
*: This symbol is shown when
you need to see a service manual
for additional instructions or
information. Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the index.
9:
Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls
or OnStar®
$: Brake System Warning Light
":Charging System
I:Cruise Control
B: Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.: Fuel Gage
+:Fuses
i: Headlamp High/Low-Beam
Changer
j: LATCH System Child
Restraints
*: Malfunction Indicator Lamp
::Oil Pressure
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
d:Traction Control
M:Windshield Washer Fluid

1-16 Keys, Doors and Windows
Turn Signal Indicator
The vehicle might have a turn signal
indicator lamp that is built into the
mirror housing. The turn signal lamp
flashes with the use of the vehicle's
turn signal and hazard flashers.
Heated Mirrors
For vehicles with heated mirrors:
<(Rear Window Defogger):
Press to heat the mirrors.
See “Rear Window Defogger” under
Automatic Climate Control System
on page 7‑1for more information.
Park Tilt Mirrors
If the vehicle has the memory
package, the outside mirrors have a
park tilt feature. This feature tilts the
outside mirrors to a preselected
position when the vehicle is in
R (Reverse). This allows the driver
to view the curb for parallel parking.
The passenger and driver mirror
returns to its original position when
the vehicle is shifted out of
R (Reverse), or the ignition is turned
off or to OFF/LOCK.
This feature can be turned on or off
through the Driver Information
Center (DIC). See Vehicle
Personalization
on page 4‑38for
more information.
Interior Mirrors
Manual Rearview Mirror
Adjust this mirror for a clear view of
the area behind the vehicle. Hold
the mirror in the center to move it
up, down, or side-to-side. To reduce
headlamp glare during night-time
use, move the lever at the bottom of
the mirror to the right.
Vehicles with OnStar
®have three
additional control buttons located at
the bottom of the mirror. See your
dealer/retailer for more information
on the system and how to subscribe
to OnStar. See OnStar
®Systemon
page 4‑43for more information
about the services OnStar provides.

2-32 Seats and Restraints
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the right front
passenger airbag.
.Airbags are designed to inflate
only once. After an airbag
inflates, you will need some new
parts for the airbag system.
If you do not get them, the
airbag system will not be there
to help protect you in another
crash. A new system will include
airbag modules and possibly
other parts. The service manual
for your vehicle covers the need
to replace other parts.
.The vehicle has a crash sensing
and diagnostic module which
records information after a
crash. SeeVehicle Data
Recording and Privacy
on
page 12‑15and Event Data
Recorders on page 12‑15.
.Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer/retailer
for service.
Passenger Sensing
System
The vehicle has a passenger
sensing system for the right front
passenger position. The passenger
airbag status indicator will be visible
on the instrument panel when the
vehicle is started.
The words ON and OFF will be
visible during the system check.
If you are using remote start,
if equipped, to start the vehicle from
a distance you may not see the system check. When the system
check is complete, either the word
ON or the word OFF will be visible.
See
Passenger Airbag Status
Indicator on page 4‑16.
The passenger sensing system
turns off the right front passenger
frontal airbag airbag under certain
conditions. The driver airbags,
seat-mounted side impact
airbag,and roof-rail airbags are not
affected by the passenger sensing
system.
The passenger sensing system
works with sensors that are part of
the right front passenger seat. The
sensors are designed to detect the
presence of a properly-seated
occupant and determine if the right
front passenger frontal airbag and
seat-mounted side impact airbag
should be enabled (may inflate)
or not.

Seats and Restraints 2-35
{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.
If the On Indicator is Lit for a
Child Restraint
If a child restraint has been installed
and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint following the directions provided
by the child restraint
manufacturer and refer to
Securing Child Restraints (Rear
Seat)
on page 2‑55orSecuring
Child Restraints (Front Seat )on
page 2‑57. 5. If, after reinstalling the child
restraint and restarting the
vehicle, the on indicator is still lit,
turn the vehicle off. Then slightly
recline the vehicle seatback and
adjust the seat cushion,
if adjustable, to make sure that
the vehicle seatback is not
pushing the child restraint into
the seat cushion.
Also make sure the child
restraint is not trapped under the
vehicle head restraint. If this
happens, adjust the head
restraint. See Head Restraints
on page 2‑2.
6. Restart the vehicle.
If the on indicator is still lit,
secure the child in the child
restraint in a rear seat position in
the vehicle, and check with your
dealer/retailer.

4-14 Instruments and Controls
Speedometer
The speedometer shows the
vehicle's speed in both kilometers
per hour (km/h) and miles per
hour (mph).
Odometer
The odometer shows how far the
vehicle has been driven, in either
kilometers or miles.
This vehicle has a tamper-resistant
odometer. If the vehicle needs a
new odometer installed, the new
one is set to the mileage of the old
odometer. If this is not possible, it is
set at zero and a label is put on the
driver's door to show the old
mileage reading.
Tachometer
The tachometer displays the engine
speed in revolutions per
minute (rpm).
Fuel Gage
When the ignition is on, the fuel
gage indicates about how much fuel
is left in the tank.
An arrow on the fuel gage indicates
the side of the vehicle the fuel door
is on.
When the indicator nears empty, the
low fuel light comes on. There is still
a little fuel left, but the fuel tank
should be filled soon.Here are four things that some
owners ask about. None of these
show a problem with the fuel gage:
.At the service station, the fuel
pump shuts off before the gage
reads full.
.It takes a little more or less fuel
to fill up than the gage indicated.
For example, the gage indicated
the tank was half full, but it
actually took a little more or less
than half the tank's capacity to
fill the tank.
.The gage moves a little while
turning a corner or speeding up.
.The gage takes a few seconds
to stabilize after the ignition is
turned on, and goes back to
empty when the ignition is
turned off.

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.

4-22 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.

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 4-45
Your Responsibility
Increase the volume of the radio if
the OnStar advisor cannot be heard.
If the light next to the OnStar
buttons is red, the system may not
be functioning properly. Press
Q
and request a vehicle diagnostic.
If the light appears clear (no light is
appearing), your OnStar
subscription has expired and all
services have been deactivated.
Press
Qto confirm that the OnStar
equipment is active.
Universal Remote
System
See Radio Frequency Statement
(US, Can)on page 12‑16for
information regarding Part 15 of
the Federal Communications
Commission (FCC) Rules and
RSS-210/211 of Industry and
Science Canada.
Universal Remote System
Programming
If the vehicle has this feature, you
will see these buttons with one
square Light Emitting Diode (LED)
indicator light next to them in the
headliner.
This system provides a way to
replace up to three remote control
transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.