
Black plate (41,1)Buick LaCrosse Owner Manual - 2011
Seats and Restraints 3-41
Additional Factors Affecting
System Operation
Safety belts help keep the
passenger in position on the
seat during vehicle maneuvers
and braking, which helps the
passenger sensing system
maintain the passenger airbag
status. See“Safety Belts” and
“Child Restraints” in the Index for
additional information about the
importance of proper restraint use.
A thick layer of additional material,
such as a blanket or cushion,
or aftermarket equipment such
as seat covers, seat heaters, and
seat massagers can affect how
well the passenger sensing system
operates. We recommend that
you not use seat covers or other
aftermarket equipment except when
approved by GM for your specific
vehicle. See Adding Equipment to
the Airbag-Equipped Vehicle on
page 3‑42 for more information
about modifications that can
affect how the system operates.
{WARNING
Stowing of articles under the
passenger seat or between the
passenger seat cushion and
seatback may interfere with the
proper operation of the passenger
sensing system.
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicle
should be serviced. There are
parts of the airbag system in
several places around the vehicle.
Your dealer and the service manual
have information about servicing
the vehicle and the airbag system.
To purchase a service manual,
see Service Publications Ordering
Information on page 13‑15.
{WARNING
For up to 10 seconds after the
ignition is turned off and the
battery is disconnected, an airbag
can still inflate during improper
service. You can be injured if you
are close to an airbag when it
inflates. Avoid yellow connectors.
They are probably part of the
airbag system. Be sure to follow
proper service procedures, and
make sure the person performing
work for you is qualified to do so.

Black plate (56,1)Buick LaCrosse Owner Manual - 2011
3-56 Seats and Restraints
{WARNING
Children can be seriously injured
or strangled if a shoulder belt
is wrapped around their neck
and the safety belt continues to
tighten. Buckle any unused safety
belts behind the child restraint
so children cannot reach them.
Pull the shoulder belt all the way
out of the retractor to set the lock,
if the vehicle has one, after the
child restraint has been installed.
Notice: Do not let the LATCH
attachments rub against the
vehicle’ s safety belts. This may
damage these parts. If necessary,
move buckled safety belts to
avoid rubbing the LATCH
attachments. Do not fold the empty rear
seat with a safety belt buckled.
This could damage the safety
belt or the seat. Unbuckle and
return the safety belt to its
stowed position, before folding
the seat.
If you need to secure more than
one child restraint in the rear seat,
see
Where to Put the Restraint on
page 3‑51.
You cannot secure three child
restraints using the LATCH anchors
in the rear seat at the same time,
but you can install two of them.
If you want to do this, install
one LATCH child restraint in
the passenger-side position, and
install the other one either in the
driver-side position or in the center
position. If you need to install child
restraints in both the center and
driver‐side position, the one in the
center seating position will need to
be secured using the vehicle safety
belts instead of the LATCH anchors. Refer to the following illustration to
learn which anchors to use.
A. Passenger Side Rear
Seating Position and Lower
Anchors 1 and 2
B. Center Rear Seating Position and Lower Anchors 3 and 4
C. Driver Side Rear Seating Position and Lower
Anchors 4 and 5

Black plate (63,1)Buick LaCrosse Owner Manual - 2011
Seats and Restraints 3-63
6. If the child restraint has a toptether, follow the child restraint
manufacturer's instructions
regarding the use of the top
tether. See Lower Anchors and
Tethers for Children (LATCH
System) on page 3‑52 for
more information.
7. Before placing a child in the child restraint, make sure
it is securely held in place.
To check, grasp the child
restraint at the safety belt
path and attempt to move it
side‐to‐side and back‐and‐forth.
When the child restraint is
properly installed, there should
be no more than 2.5 cm (1 in)
of movement. To remove the child restraint,
unbuckle the vehicle safety belt
and let it return to the stowed
position. If the top tether is
attached to a top tether anchor,
disconnect it. If the head restraint
was removed, reinstall it before
the seating position is used.
See
“Head Restraint Removal and
Reinstallation” underLower Anchors
and Tethers for Children (LATCH
System) on page 3‑52 for additional
information on installing the head
restraint properly.Securing Child Restraints
(Front Passenger Seat)
This vehicle has airbags. A rear
seat is a safer place to secure
a forward-facing child restraint.
See Where to Put the Restraint on
page 3‑51.
In addition, the vehicle has a
passenger sensing system which
is designed to turn off the right
front passenger frontal airbag
and seat‐mounted side impact
airbag under certain conditions.
See Passenger Sensing System on
page 3‑37 andPassenger Airbag
Status Indicator on page 5‑15
for more information, including
important safety information.

Black plate (66,1)Buick LaCrosse Owner Manual - 2011
3-66 Seats and Restraints
6. To tighten the belt, push downon the child restraint, pull the
shoulder portion of the belt to
tighten the lap portion of the belt,
and feed the shoulder belt back
into the retractor. When installing
a forward-facing child restraint,
it may be helpful to use your
knee to push down on the child
restraint as you tighten the belt. Try to pull the belt out of the
retractor to make sure the
retractor is locked. If the
retractor is not locked,
repeat Steps 5 and 6.
7. Before placing a child in the child restraint, make sure
it is securely held in place.
To check, grasp the child
restraint at the safety belt
path and attempt to move it
side‐to‐side and back‐and‐forth.
When the child restraint is
properly installed, there should
be no more than 2.5 cm (1 in)
of movement. If the airbags are off, the off
indicator in the passenger airbag
status indicator will come on and
stay on when the vehicle is started.
If a child restraint has been
installed and the on indicator is lit,
see
“If the On Indicator is Lit for a
Child Restraint ”under Passenger
Sensing System on page 3‑37 for
more information.
To remove the child restraint,
unbuckle the vehicle safety belt and
let it return to the stowed position.

Black plate (4,1)Buick LaCrosse Owner Manual - 2011
5-4 Instruments and Controls
&(Adjustable Interval Wipes):
Turn the band up for more frequent
wipes or down for less frequent
wipes.
9(Off): Use to turn the windshield
wipers off.
3(Mist): For a single wipe,
briefly move the wiper lever down.
For several wipes, hold the wiper
lever down.
Clear ice and snow from the
wiper blades before using them.
If they are frozen to the windshield,
carefully loosen or thaw them. Damaged wiper blades should
be replaced. See
Wiper Blade
Replacement on page 10‑29.
Heavy snow or ice can overload the
wipers. A circuit breaker stops them
until the motor cools.
Wipe Parking
If the ignition is turned to
LOCK/OFF while the wipers
are on 1, 2, or
&, they will
immediately stop.
If the windshield wiper lever is
then moved to OFF before the
driver door is opened, or within
10 minutes, the wipers will restart
and move to the base of the
windshield.
If the ignition is turned to
LOCK/OFF during a windshield
wash, the wipers will stop when
they reach the base of the
windshield.
Windshield Washer
Pull the windshield wiper lever
toward you to spray windshield
washer fluid and activate the wipers.
The wipers will continue until the
lever is released or the maximum
wash time is reached.
When the windshield wiper lever
is released, additional wipes may
occur depending on how long
the windshield washer had been
activated. See Washer Fluid on
page 10‑24 for information on
filling the windshield washer
fluid reservoir.
{WARNING
In freezing weather, do not use
the washer until the windshield
is warmed. Otherwise the
washer fluid can form ice on the
windshield, blocking your vision.

Black plate (13,1)Buick LaCrosse Owner Manual - 2011
Instruments and Controls 5-13
Engine Coolant
Temperature Gauge
English
Metric
This gauge shows the engine
coolant temperature. If the gauge pointer moves toward
the shaded area, the engine is
too hot.
This reading indicates the
same thing as the warning light.
It means that the engine coolant
has overheated. If the vehicle has
been operating under normal driving
conditions, pull off the road, stop
the vehicle, and turn off the engine
as soon as possible. See
Engine
Overheating on page 10‑21 for
more information.

Black plate (18,1)Buick LaCrosse Owner Manual - 2011
5-18 Instruments and Controls
To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled
as soon as it is possible.
If the light continues to flash,
when it is safe to do so, stop the
vehicle. Find a safe place to park
the vehicle. Turn the vehicle off,
wait at least 10 seconds, and
restart the engine. If the light is
still flashing, follow the previous
steps and see your dealer for
service as soon as possible.
Light On Steady: An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might
be required. The following may correct an
emissions system malfunction:
.Make sure the fuel cap is
fully installed. See
Filling
the Tank on page 9‑53.
The diagnostic system can
determine if the fuel cap has
been left off or improperly
installed. A loose or missing
fuel cap allows fuel to evaporate
into the atmosphere. A few
driving trips with the cap
properly installed should
turn the light off.
.Make sure the electrical
system is not wet. The system
could be wet if the vehicle was
driven through a deep puddle of
water. The condition is usually
corrected when the electrical
system dries out. A few driving
trips should turn the light off.
.Make sure to fuel the vehicle
with quality fuel. Poor fuel quality
causes the engine not to run as
efficiently as designed and can
cause: stalling after start-up,
stalling when the vehicle is
changed into gear, misfiring,
hesitation on acceleration,
or stumbling on acceleration.
These conditions might go away
once the engine is warmed up.
If one or more of these
conditions occurs, change the
fuel brand used. It will require at
least one full tank of the proper
fuel to turn the light off.
See Recommended Fuel on
page 9‑50.
If none of the above have made
the light turn off, your dealer can
check the vehicle. The dealer
has the proper test equipment
and diagnostic tools to fix any
mechanical or electrical problems
that might have developed.

Black plate (20,1)Buick LaCrosse Owner Manual - 2011
5-20 Instruments and Controls
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.
SeeAntilock Brake System (ABS)
Warning Light on page 5‑21 and
Towing the Vehicle on page 10‑89.
{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
EnglishMetric
For vehicles with the Electric
Parking Brake (EPB), the parking
brake status light comes on
when the brake is applied. If the
light continues flashing after the
parking brake is 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).
See Brake System Messages on
page 5‑33 for more information.
If the light does not come on,
or remains flashing, see your dealer.
For vehicles with the Electric
Parking Brake (EPB), the parking
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 parking
brake system to work at a reduced
level. The vehicle can still be driven,
but should be taken to a dealer
as soon as possible. See Parking
Brake on page 9‑33 for more
information.
For vehicles with the uplevel cluster,
this telltale displays in the Driver
Information Center (DIC) screen.