2010 BUICK LUCERNE light

Courtesy Lamps
When any door is opened, several lamps turn on
making it easier for you to enter and exit the vehicle.
Turn the instrument panel brightness control completely
clockwise to manually turn on these lamps.
Entry Lighting
If it is dark enough outside when you press the unlock
button on the remote keyless entry transmitter, the
interior courtesy lamps will turn on and stay on for about
40 seconds. The lamps can be turned off immediately
by pressing the lock button on the remote keyless entry
transmitter, turning the ignition key to ON/RUN or
activating the power door locks.
Delayed Entry Lighting
The interior lamps will turn on if you open the door
when it is dark enough outside. When you close the
door with the ignition off, the interior lamps will stay on
for up to 25 seconds or until the ignition is turned to an
on position. When the lamps turn off as a result of the
25 second timer or the ignition switch being turned on,
the lighting will deactivate by way of the theater
dimming effect. Locking the doors will override the
delayed entry lighting feature and the lamps will turn off
right away.
Theater Dimming
This feature allows for a three to five second fade out of
the courtesy lamps instead of immediate turn off.
Delayed Exit Lighting
If it is dark enough outside when you remove the key
from the ignition, the interior lamps will turn on and stay
on for about 25 seconds. This will give you time to find
the door pull handle or lock switches. Once the key
is inserted into the ignition, the exit lighting will be
cancelled and the lighting will fade out.
Perimeter Lighting
If it is dark enough outside when the unlock button on
the remote keyless entry transmitter is pressed, the
DRL, parking lamps and back-up lamps will come on.
This feature can be programmed on for various
amounts of time in seconds for each transmitter.
SeeDIC Vehicle Customization
on page 4‑65for
information on programming.
Front Reading Lamps
The front reading lamps are located on the headliner.
Press the button near each lamp to turn them on or off.
4-15

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 bring the charge back up.
When the state of charge is high, the voltage is lowered
slightly to prevent overcharging. If the vehicle has a
voltmeter gauge or a 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.
A high electrical load occurs when several of the
following are on, such as: headlamps, high beams, fog
lamps, rear window defogger, climate control fan at high
speed, heated seats, engine cooling fans, trailer loads,
and loads plugged into accessory power outlets.EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator's output
and the vehicle's electrical needs. It can increase
engine idle speed to generate more power, whenever
needed. It can temporarily reduce the power demands
of some accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels of
corrective action, this action may be noticeable to the
driver. If so, a Driver Information Center (DIC) message
might be displayed, such as BATTERY SAVER
ACTIVE, BATTERY VOLTAGE LOW, or LOW
BATTERY. If this message is displayed, it is
recommended that the driver reduce the electrical loads
as much as possible. See
DIC Warnings and Messages
on page 4‑55.
Inadvertent Power Battery Saver
This feature is designed to protect your vehicle's battery
against drainage from the interior lamps, or garage
door opener. When the ignition is turned off, the power
to these features will automatically turn off after
10 minutes. Power will be restored for an additional
10 minutes if any door is opened, the trunk is opened or
the courtesy lamp switch is turned on.
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To change the current mode, select one of the following:
H(Vent):Air is directed to the instrument panel
outlets.
)(Bi-Level): Air is divided between the instrument
panel outlets and the floor outlets. Slightly cooler air is
directed to the instrument panel outlets and warmer air
is directed to the floor outlets.
6(Floor): Air is directed to the floor outlets, with some
air directed to the windshield and side window outlets.
If recirculation is selected while in this mode, it stays on
for three minutes to reduce windshield fogging.
-(Floor/Defog): This clears the windows of fog or
moisture. Air is directed to the windshield and side
window outlets and to the floor outlets. The system
runs the air conditioning compressor unless the outside
temperature is near or below freezing.
0(Defrost): This mode clears the windshield of
fog or frost more quickly. Air is directed to the
windshield and side window outlets. The system runs
the air conditioning compressor unless the outside
temperature is near or below freezing.
#(Air Conditioning): Press to turn the air
conditioning system on or off. An indicator light below
the button comes on to show that this mode is on. Air
conditioning can be selected in any mode as long as
the fan knob is not in the off position.
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
H.
2. Select
h.
3. Select
#.
4. Select the coolest temperature.
5. Select the highest fan speed.
The air-conditioning system removes moisture from the
air, so a small amount of water might drip under the
vehicle while idling or after turning off the engine. This
is normal.
4-20

h(Recirculation):Press to turn the recirculation
mode on. An indicator light below the button comes on
to show that this mode is on. This mode recirculates
and helps to quickly cool the air inside the vehicle.
It can be used to prevent outside air and odors from
entering the vehicle. This mode cannot be selected
while in the defog or defrost modes. If you try to
select the recirculation mode, the indicator light
flashes three times and turns off.
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.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear Window Defogger): Press to turn the rear
window defogger on or off. An indicator light below the
button comes on to show that the rear window defogger
is on. Be sure to clear as much snow from the rear
window as possible. The rear window defogger only works when the ignition
is in ON/RUN. The rear window defogger stays on for
about 20 minutes after the button is pressed if traveling
at slow speeds. At higher vehicle speeds, the rear
defogger may stay on continuously. If turned on again,
the defogger only runs for about 10 minutes before
turning off. The defogger can be turned off by pressing
the button again, by turning the ignition to ACC/
ACCESSORY or ON/RUN, or by turning off the engine.
If the vehicle has heated outside rearview mirrors, the
mirrors heat to help clear fog or frost from the surface of
the mirror when the rear window defogger is on. See
Outside Heated Mirrors
on page 3‑36for more
information.
Notice: Do not use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs would not be
covered by the vehicle warranty. Do not attach a
temporary vehicle license, tape, a decal or anything
similar to the defogger grid.
4-21

Automatic Operation
AUTO (Automatic Fan):When AUTO is selected on
the fan control, the system automatically adjusts the fan
speed. If the OnStar
®system is activated when this
position is selected, the fan speed will lower.
AUTO (Automatic Mode)
1. Turn the fan control to AUTO.
2. Turn the mode control to AUTO.
3. Adjust the temperature to a comfortable setting between 68°F (21°C) and 78°F (26°C).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool
any faster. In cold weather, the system starts at
reduced fan speeds to avoid blowing cold air into
the vehicle until warmer air is available. The
system will start out blowing air to the floor, but
may change modes automatically as the vehicle
warms up to maintain the chosen temperature
setting. The length of time needed to warm the
interior depends on the outside temperature.
4. Wait a few minutes for the system to automatically regulate. Then adjust the temperature as
necessary to find your comfort setting. Do not cover the solar sensor located in the center of
the instrument panel, near the windshield. For more
information on the solar sensor, see
“Sensors”later in
this section.
After the vehicle is started, the display shows the
interior temperature settings.
When the ENG/MET (English/metric) button on the
Driver Information Center (DIC) is pressed, the display
shows readings in Fahrenheit or Celsius. Use the
ENG/MET button to toggle between the readings.
AUTO (Automatic Air Conditioning): If AUTO is
selected on the fan or mode control, the system
automatically controls the air conditioning compressor.
The A/C compressor runs automatically even at cool
outside temperatures in order to dehumidify the air. The
A/C indicator light is lit when the system is operating
automatically. Press the A/C button on the fan control to
turn off the A/C. To clear windows better in defog or
defrost modes, the A/C compressor runs automatically
in damp cool conditions.
4-23

h(Auto Recirculation) :If AUTO is selected on
either the fan or mode control, the system automatically
controls the supply of fresh outside air or recirculates
the interior air to cool the car faster. The indicator light
on the recirculation button will light whenever the
system switches to recirculation. You may force outside
air by pressing the outside air button. The next time
AUTO fan or mode is selected, it will reset back to
AUTO operation.
Manual Operation
9(Off): Turns the climate control system off. Outside
air still enters the vehicle and is directed to the floor.
The airflow direction and temperature can be adjusted.
If the temperature is adjusted while the system is off,
the display will light to show the current settings.
w x(Driver Temperature Controls): Press these
buttons next to the fan control to increase or decrease
the temperature inside the vehicle.
w x(Passenger Temperature Controls): Press
these buttons next to the mode control to increase or
decrease the temperature for the front passenger. If the
passenger climate control system is off, pressing one of
these buttons turns it on.
9(Fan Control): Turn clockwise or counterclockwise
to increase or decrease the fan speed. Turning this
control completely counterclockwise turns on the
automatic fan operation.
If the airflow seems low when the fan speed is at the
highest setting, the passenger compartment air filter
may need to be replaced. For more information, see
Passenger Compartment Air Filter
on page 4‑28and
Scheduled Maintenance on page 7‑3.
Air Delivery Mode Control: Turn clockwise or
counterclockwise to change the direction of the airflow
in the vehicle.
To change the current mode, select one of the following:
F(Vent): Air is directed to the instrument panel outlets.
*(Bi-Level): Air is divided between the instrument
panel outlets and the floor outlets. In automatic
operation, cooler air is directed to the upper outlets and
warmer air to the floor outlets.
7(Floor): Air is directed to the floor outlets, with some
air directed to the windshield and side window outlets.
If recirculation is selected while in this mode, it stays on
for three minutes to reduce windshield fogging.
4-24

W(Floor/Defog):This mode clears the windows of fog
or moisture. Air is directed to the floor outlets, with
some air directed to the windshield and side window
outlets. The system turns off recirculation and runs
the air-conditioning compressor unless the outside
temperature is at or below freezing. The recirculation
mode cannot be selected while in the floor/defog mode.
0(Defrost): This mode removes fog or frost from the
windshield more quickly. Air is directed to the
windshield and the side window outlets. The system
automatically turns off recirculation and runs the
air-conditioning compressor, unless the outside
temperature is at or below freezing. Recirculation
cannot be selected while in the defrost mode.
#(Air Conditioning): Press to turn the air
conditioning system on or off and override the
automatic system. An indicator light below the
button comes on to show that this mode is on.
The air conditioning system removes moisture from the
air, so a small amount of water might drip under the
vehicle while idling or after turning off the engine. This
is normal.
:(Outside Air): Press to let outside air enter the
vehicle. An indicator light comes on to show this mode
is on. Pressing
?cancels this mode.
?(Recirculation): Press to turn the recirculation
mode on. An indicator light below the button comes on
to show that this mode is on. This mode recirculates
and helps to quickly cool the air inside the vehicle.
It can be used to prevent outside air and odors from
entering the vehicle. This mode cannot be selected
while in the defog or defrost modes. If you try to select
the recirculation mode, the indicator light flashes three
times and turns off.
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.
PASS (Passenger Climate Control): Press to turn the
passenger climate control systems on or off.
When the passenger climate control system is on, the
passenger temperature setting is displayed.
If the PASS button is pressed to turn the passenger
temperature setting off, the driver temperature setting
controls the temperature for the entire vehicle.
4-25

Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
<(Rear Defogger):Press to turn the rear window
defogger on or off. An indicator light below the button
comes on to show that the rear window defogger is on.
Be sure to clear as much snow from the rear window as
possible.
The rear window defogger only works when the ignition
is in ON/RUN. The rear window defogger stays on for
about 20 minutes after the button is pressed if the
vehicle is traveling at slower vehicle speeds. At higher
vehicle speeds the rear window defogger may stay on
continuously. If turned on again, the defogger only runs
for about 10 minutes before turning off. The defogger
can be turned off by pressing the button again, by
turning the ignition to ACC/ACCESSORY or ON/RUN,
or by turning off the engine.
The heated outside rearview mirrors will heat to help
clear fog or frost from the surface of the mirror when the
rear window defogger is on. See Outside Heated
Mirrors
on page 3‑36for more information. Notice:
Do not use a razor blade or sharp object to
clear the inside rear window. Do not adhere
anything to the defogger grid lines in the rear glass.
These actions may damage the rear defogger.
Repairs would not be covered by your warranty.
Outlet Adjustment
Use the levers, located in the middle of the front
outlets, to change the direction of the airflow. Use the
thumbwheel located between the outlets to turn them on
and off.
If the vehicle has rear seat outlets, adjust the direction
of the airflow using the lever in the center of each outlet.
Operation Tips
.Clear away any ice, snow, or leaves from the air
inlets at the base of the windshield that could block
the flow of air into the vehicle.
.Use of non-GM approved hood deflectors can
adversely affect the performance of the system.
.Keep the path under the front seats clear of
objects to help circulate the air inside the vehicle
better.
4-27