2007 BUICK LACROSSE air condition

In many crashes severe enough to inate an airbag,
windshields are broken by vehicle deformation.
Additional windshield breakage may also occur
from the right front passenger airbag.
Airbags are designed to inate only once. After
airbags inate, 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 other parts that need to be replaced.
Your vehicle has a crash sensing and
diagnostic module which records information
after a crash. SeeVehicle Data Collection and
Event Data Recorders on page 489.
Let only qualied technicians work on the
airbag system. Improper service can mean that
your airbag system will not work properly. See
your dealer for service.
Passenger Sensing System
Your vehicle has a passenger sensing system. The
passenger airbag status indicator on the instrument
panel will be visible when you turn your ignition key
to RUN or START.
The passenger airbag
status indicator will
light ON and OFF for
several seconds as a
system check.
If you use remote start to start your vehicle from a
distance, if your vehicle has this feature, you may
not see the system check. When the system check
is complete, either the word ON or the word OFF
will be visible. SeePassenger Airbag Status
Indicator on page 183.
The passenger sensing system will turn off the
right front passenger’s frontal airbag under certain
conditions. The driver’s airbags are not part of
the passenger sensing system.
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Remote Vehicle Start
Your vehicle may have a remote starting feature.
This feature allows you to start the engine
from outside of the vehicle. It may also start up
the vehicle’s heating or air conditioning systems
and rear window defogger. When the remote start
system is active, the climate control system will
heat or cool the inside of the vehicle based on the
outside temperature. The rear window defogger
will be turned on by the climate control system
when it is heating the inside of the vehicle. Normal
operation of the system will return after the key
is turned to the RUN position.
Laws in some communities may restrict the use of
remote starters. For example, some laws may
require a person using remote start to have
the vehicle in view when doing so. Check local
regulations for any requirements on remote starting
of vehicles.
Do not use the remote start feature if your vehicle
is low on fuel. Your vehicle may run out of fuel.The remote start feature provides two separate
starts per ignition cycle, each with 10 minutes
of engine running time.
The remote vehicle start feature needs to be reset
after your vehicle’s engine is started two times
using the transmitter’s remote start button.
The remote start system is reset by inserting the
vehicle’s key into the ignition switch and turning it
to RUN. SeeIgnition Positions on page 109for
information regarding the ignition positions on your
vehicle.
The RKE transmitter with the remote start button
provides an increased range of operation. You can
start your vehicle from an average range of about
492 feet (150 m) away. However the range may be
less while the vehicle is running, and as a result,
you may need to be closer to your vehicle to turn it
off than you were to turn it on.
There are other conditions which can affect the
performance of the transmitter, seeRemote
Keyless Entry (RKE) System on page 89for
additional information.
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OnStar®service is provided to you subject to the
OnStar®Terms and Conditions. You may cancel
your OnStar®service at any time by contacting
OnStar®as provided below. A complete OnStar®
Owners Guide and the OnStar®Terms and
Conditions are included in the vehicle’s OnStar®
Subscriber glove box literature. For more
information, visit onstar.com or onstar.ca, contact
OnStar
®at 1-888-4-ONSTAR (1-888-466-7827)
or TTY 1-877-248-2080, or press the OnStar®
button to speak with an OnStar®advisor 24 hours
a day, 7 days a week.
Not all OnStar
®features are available on all
vehicles. To check if your vehicle is equipped to
provide the services described below, or for a
full description of OnStar
®services and system
limitations, see the OnStar®Owner’s Guide in your
glove box or visit onstar.com.
OnStar®Services
For new vehicles with OnStar®, the Safe & Sound
Plan, or the Directions & Connections®Plan is
included for one year from the date of purchase.
You can extend this plan beyond the rst year,
or upgrade to the Directions & Connections
®Plan.For more information, press the OnStar
®button to
speak with an advisor. Some OnStar®services
(such as Remote Door Unlock or Stolen Vehicle
Location Assistance) may not be available
until you register with OnStar
®.
Available Services with Safe &
Sound®Plan

Automatic Notication of Airbag Deployment
Advanced Automatic Crash Notication
(AACN) (If equipped)
Link to Emergency Services
Roadside Assistance
Stolen Vehicle Location Assistance
AccidentAssist
Remote Door Unlock/Vehicle Alert
OnStar®Vehicle Diagnostics
GM®Goodwrench®On Demand Diagnostics
OnStar®Hands-Free Calling with
30 complimentary minutes
OnStar®Virtual Advisor ( U.S. Only)
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The rst time an object is detected while in
REVERSE (R), a chime will sound and the
following will occur in sequence, depending on the
distance from the object:
At 5 feet (1.5 m) a chime will sound and
one amber light will be lit.
At 40 inches (1.0 m) both amber lights will
be lit.
At 20 inches (0.5 m) a continuous chime will
sound and all three lights (amber/amber/red)
will be lit.
At 1 foot (0.3 m) a continuous chime will
sound and all three lights (amber/amber/red)
will ash.
URPA can detect objects 3 inches (7.6 cm) and
wider, and at least 10 inches (25.4 cm) tall,
but it cannot detect objects that are above trunk
level. In order for the rear sensors to recognize an
object, it must be within operating range.
If the URPA system is not functioning properly, the
display will ash red, indicating that there is a
problem. The light will also ash red while driving if
a trailer is attached to your vehicle, or a bicycle or
object is on the back of, or hanging out of yourtrunk. The light will continue to ash until the trailer
or the object is removed and your vehicle is driven
forward at least 15 mph (25 km/h).
It may also ash red if the ultrasonic sensors are
not kept clean. So be sure to keep your rear
bumper free of mud, dirt, snow, ice and slush or
materials such as paint or the system may
not work properly. If after cleaning the rear bumper
and driving forward at least 15 mph (25 km/h),
the display continues to ash red, see your
GM dealer. For cleaning instructions, seeWashing
Your Vehicle on page 442.
It may also ash red if your vehicle is moving in
REVERSE (R) at a speed greater than 3 mph
(5 km/h). Other conditions that may affect system
performance include things like the vibrations
from a jackhammer or the compression of
airbrakes on a very large truck.
As always, drivers should use care when backing
up a vehicle. Always look behind you, being
sure to check for other vehicles, obstructions and
blind spots.
166

Operation
OFF:Turn the left knob to this position to turn the
climate control system off.
9(Fan):Turn the knob by this symbol, located
on the left side of the climate control panel,
clockwise or counterclockwise to increase or
decrease the fan speed. The fan speed will be
temporarily reduced between the transition
to a new mode. The fan will resume the original
speed when the transition to the new mode
is complete.
Temperature Control:Turn the center knob
clockwise or counterclockwise to increase
or decrease the temperature inside your vehicle.Use the right knob to select from the
following modes:
H(Vent):This mode directs outside air to the
instrument panel outlets. If driving in city
traffic, and the vehicle is stopped and idling, or the
weather is hot, turning on the recirculation
mode helps to prevent the air inside the vehicle
from becoming stale. After ve minutes recirculate
will allow some outside air into the vehicle.
)(Bi-Level):This mode directs half of the air to
the instrument panel outlets, and the remaining
air to the oor outlets. Some air may be directed
toward the windshield. Slightly cooler air is directed
to the instrument panel outlets and warmer air is
directed to the oor outlets.
6(Floor):This mode directs most of the air to
the oor outlets with some air directed toward
the side window outlets and a little air directed to
the windshield.
In this mode, the system will automatically use
outside air. The air conditioning compressor will be
engaged unless the outside temperature is 40°F
(4°C) or below.
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You can also select modes by using the
following buttons:
h(Recirculate):Press this button to recirculate
cabin air through the vehicle. It can be used to
help reduce the outside air and odors that
enter your vehicle or to help heat or cool the air
inside your vehicle quicker. An indicator light below
the button will come on in this mode. Operation
in this mode during periods of high humidity
and cool outside temperatures may result in
increased window fogging. If window fogging is
experienced, select the defrost mode. To prevent
the air inside the vehicle from becoming stale,
after ve minutes recirculate will allow some
outside air into the vehicle.
#(Air Conditioning):Press this button to turn
the air conditioning system on or off. When
this button is pressed, an indicator light below the
button will come on to let you know the air
conditioning is activated. Air conditioning can be
selected in any mode as long as the fan switch is
on. The indicator light will change with each
button press even when conditions prevent
operation.On hot days during the vehicle’s initial start-up,
open the windows to let hot inside air escape; then
close them. This helps to reduce the time it
takes for the vehicle to cool down. It also helps
the system to operate more efficiently.
For quicker cool down on hot days, do the
following:
1. Select the vent air mode.
2. Select the recirculation mode.
3. Select the air conditioner.
4. Select the coolest temperature.
5. Select the highest fan speed.
The air conditioning system removes moisture
from the air, so you may sometimes notice a
small amount of water dripping underneath your
vehicle while idling or after turning off the
engine. This is normal.
Using these settings together for long periods
of time may cause the air inside the vehicle to
become too dry. To prevent this, after ve minutes
recirculate will allow some outside air into
the vehicle.
170

Defogging and Defrosting
Fog on the inside of the vehicle is a result of high
humidity causing moisture to condense on the
cool window glass. This can be minimized if the
climate control system is used properly. There are
two modes to clear frost or fog from the windshield.
Use the defog mode to clear the windows of
condensation and to warm the vehicle’s occupants.
Use the defrost mode to remove frost or
condensation from the windshield quickly.
See “Rear Window Defogger” later in this section
for information on clearing the rear window of
fog or ice.
Turn the right knob to select the defog or
defrost mode.
Do not drive the vehicle until all windows
are clear.
-(Defog):This mode directs half of the air to the
windshield and the side window outlets and half to
the oor outlets. When you select this mode, the
system turns recirculation off and runs the air
conditioning compressor unless the outside
temperature is near or below freezing. Pressing the
recirculation button will have no effect other than
turning on the indicator light while in defog mode.
0(Defrost):This mode directs most of the air to
the windshield and the side window outlets, with
some air directed to the oor outlets. When
you select this mode, the system turns
recirculation off and runs the air conditioning
compressor unless the outside temperature is near
or below freezing. Pressing the recirculation
button will have no effect other than turning on the
indicator light while in defrost mode.
171

9y(Fan):Press this button to increase the fan
speed. Pressing the arrows cancels the automatic
operation and places the system in manual or
semi-automatic mode. Press the AUTO button to
return to automatic operation. If the airow
seems low when the fan is at the highest setting,
the passenger compartment air lter may need
to be replaced. For more information see
Passenger Compartment Air Filter on page 178
andScheduled Maintenance on page 462.
6(Floor):This mode directs most of the air to
the oor, with some air directed to the side window
outlets and a small amount to the windshield.
)(Bi-Level):This setting directs airow to the
instrument panel and oor outlets. A small amount
of air is also directed to the windshield and the
side window outlets.
Y(Vent):This mode directs air through the
instrument panel outlets.
h(Recirculation):Press this button to turn
recirculation mode on or off. This mode keeps
outside air from coming into the vehicle. It can be
used to help reduce the outside air and odors
that enter your vehicle or help cool the air inside
the vehicle quicker.
Recirculation is not available while in the oor,
defrost, or oor/defog modes. Using recirculation
for long periods of time may cause the air
inside your vehicle to become too dry.
Recirculation mode has a ve minute timer after
which the system allows for some fresh outside air
into the vehicle to maintain interior air quality.
#(Air Conditioning):Press this button to turn
the air conditioning compressor on and off.
The indicator light on the button will come on
when the air conditioning is on. The indicator light
will change with each button press even when
conditions prevent operation.
((Heated Seats):Press this button to turn the
driver or passenger heated seats on and off. See
Heated Seats on page 10for additional information.
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