2007 BUICK LUCERNE engine

Running the Engine While Parked
It is better not to park with the engine running. But if
you ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust
into your vehicle. See the earlier caution
underEngine Exhaust on page 127.
Also, idling in a closed-in place can let
deadly carbon monoxide (CO) into your
vehicle even if the climate control fan is
at the highest setting. One place this can
happen is a garage. Exhaust — with
CO — can come in easily. NEVER park
in a garage with the engine running.
Another closed-in place can be a blizzard.
SeeWinter Driving on page 302.
{CAUTION:
It can be dangerous to get out of your
vehicle if the shift lever is not fully in
PARK (P) with the parking brake rmly
set. Your vehicle can roll. Do not leave
your vehicle when the engine is running
unless you have to. If you have left the
engine running, the vehicle can move
suddenly. You or others could be injured.
To be sure your vehicle will not move,
even when you are on fairly level ground,
always set your parking brake and move
the shift lever to PARK (P).
Follow the proper steps to be sure your vehicle
will not move. SeeShifting Into Park (P) on
page 123.
If you are parking on a hill and if you are pulling a
trailer, also seeTowing a Trailer on page 315.
128

Passenger Safety Belt Reminder Light....... 197
Airbag Readiness Light............................. 197
Passenger Airbag Status Indicator............. 198
Charging System Light.............................. 200
Brake System Warning Light..................... 201
Anti-Lock Brake System Warning Light...... 202
Traction Control System (TCS)
Warning Light........................................ 202
StabiliTrak
®Indicator Light......................... 203
Engine Coolant Temperature
Warning Light........................................ 204
Engine Coolant Temperature Gage............ 204
Tire Pressure Light.................................... 205
Malfunction Indicator Lamp........................ 206
Oil Pressure Light..................................... 209
Security Light............................................ 210
Fog Lamp Light......................................... 210
Cruise Control Light.................................. 210
Highbeam On Light................................... 210
Fuel Gage................................................. 211Driver Information Center (DIC).................. 212
DIC Controls and Displays........................ 212
DIC Compass............................................ 218
DIC Warnings and Messages.................... 221
DIC Vehicle Customization........................ 231
Audio System(s)......................................... 241
Setting the Time (Without Date Display).... 242
Setting the Time (With Date Display)......... 243
Radio with CD (Base)............................... 245
Radio with CD (MP3)................................ 251
Using an MP3........................................... 262
XM Radio Messages................................. 269
Navigation/Radio System........................... 271
Theft-Deterrent Feature............................. 271
Audio Steering Wheel Controls.................. 271
Radio Reception........................................ 272
Care of Your CDs..................................... 273
Care of the CD Player.............................. 274
Backglass Antenna.................................... 274
XM™ Satellite Radio Antenna System....... 274
Section 3 Instrument Panel
156

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.A high electrical load occurs when several of the
following loads are on: 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 or Service
Battery Charging System. If this message is
displayed, it is recommended that the driver
reduce the electrical loads as much as possible.
SeeDIC Warnings and Messages on page 221.
176

#(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 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 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.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 oor/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. The recirculation mode cannot be selected
while in these modes.
-(Floor/Defog):This mode directs half of the air
to the windshield and the side window outlets and
half to the oor outlets. The system runs the air
conditioning compressor unless the outside
temperature is near or below freezing.
0(Defrost):This mode directs most of the air to
the windshield and the side window outlets. The
system runs the air conditioning compressor unless
the outside temperature is near or below freezing.
184

Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear Window Defogger):Press this button
to turn the rear window defogger on or off. An
indicator light below the button will come on to
let you know that the rear window defogger is
activated. Be sure to clear as much snow from
the rear window as possible.
The rear window defogger will only work when the
ignition is in run. The rear window defogger will stay
on for about 20 minutes after the button is pressed
if you are traveling at slower vehicle speeds. At
higher vehicle speeds, the rear defogger may stay
on continuously. If turned on again, the defogger
will only run for about 10 minutes before turning off.
The defogger can be turned off by pressing
the button again, by turning the ignition to
ACCESSORY or RUN, or by turning off the engine.If your vehicle has heated outside rearview mirrors,
the mirrors will heat to help clear fog or frost from
the surface of the mirror when the rear window
defogger is on. SeeOutside Automatic Dimming
Heated Mirror on page 135for 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 your warranty. Do not
attach a temporary vehicle license, tape, a decal
or anything similar to the defogger grid.
185

9(Off):Turn the left control to this position to
turn the entire climate control system off.
To change the current mode, select one of the
following positions using the right control:
F(Vent):Turn the control to this mode to direct
air to the instrument panel outlets.
*(Bi-Level):Turn the control to this mode to
direct about half of the air to the instrument panel
outlets and most of the remaining air to the
oor outlets. In automatic operation, cooler air is
directed to the upper outlets and warmer air to the
oor outlets.
7(Floor):Turn the control to this mode to direct
most of the air to the oor outlets with some air
directed to the side window outlets and the
windshield.
The mode control can also be used to select the
oor/defog mode. Information on defogging
and defrosting can be found later in this section.
#(Air Conditioning):Press this button to
override the automatic system and turn the air
conditioning system on or off. When in AUTO,
the air conditioning compressor will come
on automatically, as necessary.
The air conditioning system removes moisture
from the air, so you may notice a small amount
of water dripping underneath your vehicle while
idling or after turning off the engine. This is normal.
:(Outside Air):This mode allows outside air
to enter the vehicle. It can be used to prevent
the inside from becoming too dry. Press this button
to turn outside air on. Pressing the recirculation
button will cancel this mode. When the button
is pressed, an indicator light will turn on.
?(Recirculation):Press this button to keep
outside air from coming in the vehicle. It can be
used to prevent outside air and odors from entering
your vehicle or to help cool the air inside your
vehicle more quickly. Press this button to turn the
recirculation mode on or off. When the button is
pressed, an indicator light will come on.
188

0(Defrost):Use this mode to remove fog or
frost from the windshield more quickly. Turning the
control to this mode directs most of the air to the
windshield and the side window outlets. In this
mode, the system will automatically turn off
recirculation and run the air-conditioning
compressor, unless the outside temperature is at or
below freezing. Recirculation cannot be selected
while in the defrost mode. Do not drive the vehicle
until all the windows are clear.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
<(Rear Defogger):Press this button to turn
the rear window defogger on or off. An indicator
light below the button will come on to let you know
that the rear window defogger is activated. Be
sure to clear as much snow from the rear window
as possible.The rear window defogger will only work when the
ignition is in RUN. The rear window defogger will
stay on for about 20 minutes after the button is
pressed if you are traveling at slower vehicle
speeds. At higher vehicle speeds the rear window
defogger may stay on continuously. If turned
on again, the defogger will only run for about
10 minutes before turning off. The defogger can be
turned off by pressing the button again, by turning
the ignition to ACCESSORY or 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. SeeOutside
Automatic Dimming Heated Mirror on page 135for
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.
191

Outlet Adjustment
Use the levers, located in the middle of the front
outlets, to change the direction of the airow.
Use the thumbwheel located between the outlets
to turn them on and off.
If your vehicle has rear seat outlets, adjust the
direction of the airow 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 ow of air into your vehicle.
Use of non-GM approved hood deectors 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.
Passenger Compartment Air Filter
The passenger compartment air lter traps most of
the pollen from the air entering your vehicle. Like
your vehicle’s engine air cleaner/lter, it may need
to be changed periodically. For how often to change
the passenger compartment air lter, see
Scheduled Maintenance on page 442.
The access panel for the passenger compartment
air lter is located under the hood near the
windshield, on the passenger’s side of the vehicle.
192