light BUICK LACROSSE 2007 Service Manual

<(Parking Lamps):Turn the control to this
position to turn on the parking lamps together with
the following:
Taillamps
License Plate Lamps
Sidemarker Lamps
Instrument Panel Lights
2(Headlamps):Turn the control to this position
to turn your headlamps on, together with the
previously listed lamps and lights.
A warning chime will sound if the driver’s door is
opened when the ignition switch is turned to
OFF or ACCESSORY and the headlamps or
parking lamps are on.
-(Foglamps):If your vehicle has fog lamps,
press this button to turn them on and off. SeeFog
Lamps on page 160for additional information.
Daytime Running Lamps (DRL)/
Automatic Headlamp System
Daytime Running Lamps (DRL) can make it easier
for others to see the front of your vehicle during
the day. DRL can be helpful in many different
driving conditions, but they can be especially
helpful in the short periods after dawn and before
sunset. DRL lamps are required to function at
all times on all vehicles rst sold in Canada.
A light sensor on top of the instrument panel
makes the DRL work, so be sure it is not covered.
The DRL system will make the low-beam
headlamps come on at reduced brightness when
the following conditions are met:
The ignition is on.
The exterior lamps control is off.
The parking brake is released.
While the DRL are on, only the vehicle’s low-beam
headlamps will be on at reduced brightness.
The turn signal, taillamps, sidemarker, and other
lamps will not be on. The instrument panel will not
be lit up either.
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When it is dark enough outside, the DRL will turn
off and the vehicle’s headlamps and parking
lamps will turn on. The other lamps that come on
with the headlamps will also come on.
When it is bright enough outside, the headlamps
will go off and the DRL will come on.
To idle the vehicle with the DRL off, turn the
exterior lamp control off and then do one of the
following:
Turn the exterior lamp control to the parking
lamp position.
Turn the exterior lamp control to the
headlamp position.
Turn the exterior lamp control from AUTO to
off and back to AUTO.
This feature is not available for vehicles rst sold
in Canada.
To turn off the automatic headlamp feature when it
is dark outside, move the exterior lamp control
to the parking lamp position. The parking lamps
remain on and the headlamps turn off. The
fog lamps also go on if they were on previously.
As with any vehicle, the regular headlamp system
should be turned on when needed.
Fog Lamps
If your vehicle has fog
lamps, the button is
located in the center of
the exterior lamps
control on the left side
of the steering column.
Press the fog lamps button to turn the lamps
on or off.
While the high-beam headlamps are on, the fog
lamps are off.
Some localities have laws that require the
headlamps to be on along with the fog lamps.
Exterior Lighting Battery Saver
If the parking lamps or headlamps have been left
on after the ignition has been turned to off, the
exterior lamps will turn off after about 10 minutes.
This protects the battery from being drained.
Use the exterior lamp control to turn the lamps
back on, if they are still needed.
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Interior Lamps
Your interior lamps
control is located next to
the exterior lamps
control and to the left of
the steering wheel on
the instrument panel.
9(Off):Turn the control to this position to
disable courtesy lamps, entry lighting, delayed
entry lighting, and delayed exit lighting.
1(Door):Turn the control to this position to turn
the interior lamps on when any door is open and
when the ignition key is removed from the ignition.
+(On):Turn the control to this position to turn
on the interior lamps.
The interior lamps can be controlled, or
automatically turned on or off under certain
conditions. They are explained in the following text.
Instrument Panel Brightness
The instrument panel lights can be brightened or
dimmed by pressing the center knob of the
interior lamp controls until it pops out. Turn the
knob clockwise to brighten the lights or
counterclockwise to dim them.
Courtesy Lamps
Courtesy lamps come on to make it easier to
enter and exit the vehicle. These lamps will come
on when the interior lamp control is in the door
position and any door is opened.
Entry Lighting
The courtesy lamps will come on and stay on for a
set time whenever the interior lamp control is in
the door position and the UNLOCK button on
the Remote Keyless Entry (RKE) transmitter is
pressed.
The lamps will stay on while a door is opened and
then turn off automatically about 25 seconds
after it is closed. If the UNLOCK button is pressed
and a door is not opened, the lamps will turn off
after about 25 seconds.
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Entry lighting includes a feature called theater
dimming. With theater dimming, the lamps do not
turn off at the end of the delay time. Instead, they
slowly dim after the delay time and then turn off.
The courtesy lamps turn off when the ignition key
is turned to RUN or START. They will come
on again when a door is opened.
Delayed Entry Lighting
Delayed entry lighting lights the vehicle’s interior
for a period of time after all the doors have
been closed.
After all the doors have been closed, the delayed
entry lighting feature will continue to work until
one of the following occurs:
The ignition is in RUN.
The doors are locked.
25 seconds has passed.
If during the illumination period a door is opened,
the timed illumination period will be canceled
and the interior lamps will remain on.
Theater Dimming
This feature allows for a three to ve-second fade
out of the courtesy lamps instead of immediate
turn off.
Delayed Exit Lighting
This feature can be programmed either on or off
using the Driver Information Center. SeeDIC
Vehicle Personalization on page 229under INT
(Interior) LIGHTS KEYS REMOVED. When
activated, this feature illuminates the interior for a
period of time after the ignition key is removed
from the ignition.
The ignition must be off and the interior lamp
control must be in the door position for delayed
exit lighting to work. When the ignition key is
removed, interior illumination will activate
and remain on until one of the following occurs:
The ignition is in RUN.
The power door locks are activated.
25 seconds has passed.
If during the illumination period a door is opened,
the timed illumination period will be canceled
and the interior lamps will remain on.
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Perimeter Lighting
Perimeter lighting provides a period of exterior
vehicle lighting. Perimeter lighting activates when
the key is removed from the ignition or the vehicle is
unlocked using the Remote Keyless Entry (RKE)
transmitter. The amount of time the exterior lamps
will remain on can be programmed using the Driver
Information Center (DIC). See “EXIT LIGHT
DELAY” underDIC Vehicle Personalization on
page 229for additional information.
Overhead Console Reading Lamps
Your vehicle may have reading lamps located
on the overhead console. Press the lens to turn
them on and off.
Rear Assist Handle Reading Lamps
Your vehicle may have reading lamps located
near the rear assist handles. Press the lens to turn
them on and off.
Electric Power Management
The vehicle has Electric Power Management (EPM)
that estimates the battery’s temperature and state
of charge. It then adjusts the voltage for best
performance and extended life of the battery.
When the battery’s state of charge is low, the
voltage is raised slightly to quickly put the charge
back in. When the state of charge is high, the
voltage is lowered slightly to prevent overcharging.
If the vehicle has a voltmeter gage or voltage
display on the Driver Information Center (DIC), you
may see the voltage move up or down. This is
normal. If there is a problem, an alert will be
displayed.
The battery can be discharged at idle if the
electrical loads are very high. This is true for all
vehicles. This is because the generator (alternator)
may not be spinning fast enough at idle to
produce all the power that is needed for very high
electrical loads.
163

The URPA display is located inside the vehicle,
above the rear window. It has three color-coded
lights that can be seen through the rearview mirror
or by turning around.
{CAUTION:
The Ultrasonic Rear Park Assist (URPA)
system does not replace driver vision.
URPA does not:
Operate above speeds of
3 mph (5 km/h).
Detect objects more than 5 feet
(1.5 meters) behind the vehicle. This
distance may be less during warmer
or humid weather.
Detect objects that are below the
bumper, underneath the vehicle, or
that are very close to the vehicle.
Detect children, pedestrians,
bicyclists, or pets.
CAUTION: (Continued)
CAUTION: (Continued)
So if you do not use proper care before
backing up, you could hit a vehicle, child,
pedestrian, bicyclist, or pet, resulting in
vehicle damage, injury, or death. Even
though the vehicle has the URPA system,
always check carefully before backing up
by checking behind your vehicle.
How the System Works
URPA comes on automatically when the shift lever
is moved into REVERSE (R). When the system
comes on, the three lights on the display will briey
illuminate to let you know that the system is
working. If your vehicle is moving in REVERSE (R)
at a speed greater than 3 mph (5 km/h), the red
light will ash to remind you the system does
not work at this speed.
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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

Ashtray(s) and Cigarette Lighter
Your vehicle may have a removable ashtray and
cigarette lighter. The cigarette lighter may be
located under the climate control system.
The removable ashtray can be placed into the
front console cupholder.
Notice:If you put papers, pins, or other
ammable items in the ashtray, hot cigarettes
or other smoking materials could ignite
them and possibly damage your vehicle.
Never put ammable items in the ashtray.
To use the cigarette lighter, push it in all the way,
and let go. When the heating element is ready,
it will pop back out by itself.
Notice:Holding a cigarette lighter in while it is
heating will not allow the lighter to back away
from the heating element when it is hot. Damage
from overheating may occur to the lighter or
heating element, or a fuse could be blown. Do
not hold a cigarette lighter in while it is heating.
Do not use equipment exceeding maximum
amperage rating of 20 amperes.
Climate Controls
Climate Control System
With this system you can control the heating,
cooling and ventilation for your vehicle.
If your vehicle has the remote start feature and
it is activated, the climate control system will
automatically cool the vehicle if the temperature is
greater than 90°F (32°C) and heat the vehicle if the
temperature is below 37°F (3°C). If the temperature
is between 37°F (3°C) and 90°F (32°C), the last
control setting selected when the engine was
running will be used. Normal operation and the last
setting of the climate control system will return after
the key is turned to the RUN position.
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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.
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