ecu BUICK LACROSSE 2007 Owner's Guide

SeeLower Anchors and Tethers for Children
(LATCH) on page 51if your child restraint has
a top tether.
You will be using the lap-shoulder belt to secure
the child restraint in this position. Be sure to follow
the instructions that came with the child restraint.
Secure the child in the child restraint when and as
the instructions say.
1. Your vehicle has a right front passenger’s
frontal airbag. SeePassenger Sensing System
on page 75. We recommend that rear-facing
child restraints be secured in a rear seat, even
if the airbag is off. If your child restraint is
forward-facing, move the seat as far back as it
will go before securing the child restraint in this
seat. SeePower Seats on page 9.
When the passenger sensing system has
turned off the right front passenger’s frontal
airbag, the off indicator in the passenger airbag
status indicator should light and stay lit when
you turn the ignition to RUN or START. See
Passenger Airbag Status Indicator on page 183.2. Put the child restraint on the seat.
3. Pick up the latch plate, and run the lap and
shoulder portions of the vehicle’s safety belt
through or around the restraint. The child
restraint instructions will show you how.
4. Buckle the belt. Make sure the release button
is positioned so you would be able to unbuckle
the safety belt quickly if you ever had to.
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7. Push and pull the child restraint in different
directions to be sure it is secure.
8. If the airbag is off, the off indicator on the
instrument panel will be lit and stay lit
when the key is turned to RUN or START.
If a child restraint has been installed and the on
indicator is lit, turn the vehicle off. Remove the child
restraint from the vehicle and reinstall the child
restraint.
If, after reinstalling the child restraint and restarting
the vehicle, the on indicator is still lit, check to make
sure that the vehicle’s seatback is not pressing the
child restraint into the seat cushion. If this happens,
slightly recline the vehicle’s seatback and adjust the
seat cushion if possible. Also make sure the child
restraint is not trapped under the vehicle head
restraint. If this happens, adjust the head restraint.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.
To remove the child restraint, just unbuckle the
vehicle’s safety belt and let it go back all the way.
The safety belt will move freely again and be
ready to work for an adult or larger child
passenger.
65

{CAUTION:
Anyone who is up against, or very close to,
any airbag when it inates can be seriously
injured or killed. Airbags plus lap-shoulder
belts offer the best protection for adults,
but not for young children and infants.
Neither the vehicle’s safety belt system nor
its airbag system is designed for them.
Young children and infants need the
protection that a child restraint system can
provide. Always secure children properly
in your vehicle. To read how, seeOlder
Children on page 39orInfants and Young
Children on page 42.
There is an airbag
readiness light on the
instrument panel cluster,
which shows the
airbag symbol.The system checks the airbag electrical system
for malfunctions. The light tells you if there is
an electrical problem. SeeAirbag Readiness Light
on page 182for more information.
Where Are the Airbags?
The driver’s frontal airbag is in the middle of the
steering wheel.
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If your vehicle has a roof-mounted side impact
airbag for the right front passenger and the person
directly behind that passenger, it is located in
the ceiling above the side windows.
{CAUTION:
If something is between an occupant
and an airbag, the bag might not inate
properly or it might force the object into
that person causing severe injury or even
death. The path of an inating airbag must
be kept clear. Do not put anything between
an occupant and an airbag, and do not
attach or put anything on the steering
wheel hub or on or near any other airbag
covering. And, if your vehicle has
roof-mounted side impact airbags, never
secure anything to the roof of your vehicle
by routing the rope or tie down through any
door or window opening. If you do, the path
of an inating side impact airbag will be
blocked. The path of an inating airbag
must be kept clear.
70

The passenger sensing system works with sensors
that are part of the right front passenger’s seat. The
sensors are designed to detect the presence of a
properly-seated occupant and determine if the
passenger’s frontal airbag should be enabled
(may inate) or not.
Accident statistics show that children are safer if
they are restrained in the rear rather than the front
seat. We recommend that child restraints be
secured in a rear seat, including an infant riding
in a rear-facing infant seat, a child riding in a
forward-facing child seat, and an older child riding
in a booster seat.
Your vehicle has a rear seat that will accommodate
a rear-facing child restraint. A label on your sun
visor says, “Never put a rear-facing child seat
in the front.” This is because the risk to the
rear-facing child is so great, if the airbag deploys.
{CAUTION:
A child in a rear-facing child restraint can
be seriously injured or killed if the right
front passenger’s airbag inates. This is
because the back of the rear-facing child
restraint would be very close to the
inating airbag.
Even though the passenger sensing
system is designed to turn off the
passenger’s frontal airbag if the system
detects a rear-facing child restraint,
no system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend
that rear-facing child restraints be secured
in the rear seat, even if the airbag is off.
CAUTION: (Continued)
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CAUTION: (Continued)
If you need to secure a forward-facing
child restraint in the right front seat,
always move the front passenger seat as
far back as it will go. It is better to secure
the child restraint in a rear seat.
The passenger sensing system is designed to turn
off the right front passenger’s frontal airbag if:
The right front passenger seat is unoccupied.
The system determines that an infant is
present in a rear-facing infant seat.
The system determines that a small child is
present in a forward-facing child restraint.
The system determines that a small child is
present in a booster seat.
A right front passenger takes his/her weight off
of the seat for a period of time.
The right front passenger seat is occupied by
a smaller person, such as a child who has
outgrown child restraints.
Or, if there is a critical problem with the airbag
system or the passenger sensing system.
When the passenger sensing system has turned
off the right front passenger’s frontal airbag, the off
indicator on the instrument panel will light and
stay lit to remind you that the airbag is off.
If a child restraint has been installed and the on
indicator is lit, turn the vehicle off. Remove the child
restraint from the vehicle and reinstall the child
restraint following the child restraint manufacturer’s
directions and refer toSecuring a Child Restraint in
the Right Front Seat Position on page 61.
If, after reinstalling the child restraint and restarting
the vehicle, the on indicator is still lit, check to make
sure that the vehicle’s seatback is not pressing the
child restraint into the seat cushion. If this happens,
slightly recline the vehicle’s seatback and adjust the
seat cushion if possible. Also make sure the child
restraint is not trapped under the vehicle head
restraint. If this happens, adjust the head restraint.
77

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.
The passenger sensing system is designed to
enable (may inate) the right front passenger’s
frontal airbag anytime the system senses that a
person of adult size is sitting properly in the right
front passenger’s seat. When the passenger
sensing system has allowed the airbag to be
enabled, the on indicator will light and stay lit to
remind you that the airbag is active.
For some children who have outgrown child
restraints and for very small adults, the passenger
sensing system may or may not turn off the right
front passenger’s frontal airbag, depending upon
the person’s seating posture and body build.
Everyone in your vehicle who has outgrown
child restraints should wear a safety belt
properly — whether or not there is an airbag
for that person.
If a person of adult-size is sitting in the
right front passenger’s seat, but the off
indicator is lit, it could be because that
person is not sitting properly in the seat.If this happens, turn the vehicle off and ask the
person to place the seatback in the fully upright
position, then sit upright in the seat, centered on the
seat cushion, with the person’s legs comfortably
extended. Restart the vehicle and have the person
remain in this position for about two minutes. This
will allow the system to detect that person and then
enable the passenger’s airbag.
78

{CAUTION:
If the airbag readiness light in the
instrument panel cluster ever comes on
and stays on, it means that something may
be wrong with the airbag system. If this
ever happens, have the vehicle serviced
promptly, because an adult-size person
sitting in the right front passenger’s seat
may not have the protection of the frontal
airbag. SeeAirbag Readiness Light on
page 182for more on this, including
important safety information.
A thick layer of additional material such as a
blanket, or aftermarket equipment such as seat
covers, seat heaters, and seat massagers, can
affect how well the passenger sensing system
operates. Remove any additional material from
the seat cushion before reinstalling or securing
the child restraint and before a small occupant,
including a small adult, sits in the right front
passenger’s seat. You may want to consider notusing seat covers or other aftermarket equipment if
your vehicle has the passenger sensing system.
SeeAdding Equipment to Your Airbag-Equipped
Vehicle on page 81for more information about
modications that can affect how the system
operates.
The passenger sensing system may suppress the
airbag deployment when liquid is soaked into the
seat. If this happens, the off indicator in the
passenger airbag status indicator and the airbag
readiness light on the instrument panel will be lit.
The system should resume normal operation after
the seat is allowed to dry. If the system operates
incorrectly after the seat has dried, have your
dealer check the system.
{CAUTION:
Stowing of articles under the passenger’s
seat or between the passenger’s seat
cushion and seatback may interfere with
the proper operation of the passenger
sensing system.
79

Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to the front
or sides of the vehicle that could keep the
airbags from working properly?
A:Yes. If you add things that change your
vehicle’s frame, bumper system, height, front
end or side sheet metal, they may keep the
airbag system from working properly. Also, the
airbag system may not work properly if you
relocate any of the airbag sensors. If you have
any questions about this, you should contact
Customer Assistance before you modify your
vehicle. The phone numbers and addresses for
Customer Assistance are in Step Two of the
Customer Satisfaction Procedure in this
manual. SeeCustomer Satisfaction
Procedure on page 478.
Q:Because I have a disability, I have to get
my vehicle modied. How can I nd out
whether this will affect my airbag system?
A:Changing or moving any parts of the front
seats, safety belts, the airbag sensing and
diagnostic module, steering wheel, instrument
panel, ceiling headliner, ceiling and pillar
garnish trim, roof-mounted airbag modules,
or airbag wiring can affect the operation of the
airbag system. If you have questions, call
Customer Assistance. The phone numbers
and addresses for Customer Assistance are in
Step Two of the Customer Satisfaction
Procedure in this manual. SeeCustomer
Satisfaction Procedure on page 478.
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Keys.............................................................. 87
Remote Keyless Entry (RKE) System.......... 89
Remote Keyless Entry (RKE) System
Operation................................................. 90
Doors and Locks.......................................... 96
Door Locks................................................. 96
Power Door Locks....................................... 97
Delayed Locking.......................................... 97
Automatic Door Lock................................... 98
Programmable Automatic Door Unlock........ 98
Rear Door Security Locks........................... 98
Lockout Protection....................................... 99
Trunk........................................................ 100
Windows...................................................... 102
Power Windows........................................ 103
Sun Visors................................................ 104
Theft-Deterrent Systems............................. 104
Content Theft-Deterrent............................. 104
PASS-Key
®III ........................................... 106
PASS-Key®III Operation........................... 107Starting and Operating Your Vehicle......... 109
New Vehicle Break-In................................ 109
Ignition Positions....................................... 109
Retained Accessory Power (RAP)............. 110
Starting the Engine.................................... 111
Engine Coolant Heater.............................. 112
Automatic Transaxle Operation.................. 114
Parking Brake........................................... 117
Shifting Into Park (P) ................................. 118
Shifting Out of Park (P)............................. 120
Parking Over Things That Burn................. 121
Engine Exhaust......................................... 122
Running the Engine While Parked............. 123
Mirrors......................................................... 124
Manual Rearview Mirror............................. 124
Manual Rearview Mirror with OnStar
®....... 124
Automatic Dimming Rearview Mirror.......... 124
Automatic Dimming Rearview Mirror
with OnStar
®.......................................... 125
Outside Power Mirrors............................... 125
Outside Power Heated Mirrors................... 126
Outside Convex Mirror............................... 126
Section 2 Features and Controls
85