2007 BUICK LUCERNE air filter

Instrument Panel Overview........................ 158
Hazard Warning Flashers.......................... 160
Other Warning Devices............................. 160
Horn.......................................................... 160
Tilt Wheel.................................................. 161
Heated Steering Wheel............................. 161
Turn Signal/Multifunction Lever.................. 162
Turn and Lane-Change Signals................. 162
Headlamp High/Low-Beam Changer.......... 163
Flash-to-Pass............................................ 164
Windshield Wipers..................................... 164
Rainsense™ II Wipers............................... 165
Windshield Washer.................................... 166
Cruise Control........................................... 167
Exterior Lamps.......................................... 170
Wiper Activated Headlamps....................... 171
Headlamps on Reminder........................... 171
Daytime Running Lamps (DRL)................. 172
Fog Lamps................................................ 173
Cornering Lamps....................................... 173
Exterior Lighting Battery Saver.................. 173
Instrument Panel Brightness...................... 174
Courtesy Lamps........................................ 174
Entry Lighting............................................ 174Delayed Entry Lighting.............................. 174
Theater Dimming....................................... 175
Delayed Exit Lighting ................................. 175
Perimeter Lighting..................................... 175
Front Reading Lamps................................ 175
Electric Power Management...................... 176
Inadvertent Power Battery Saver............... 177
Battery Run-Down Protection..................... 177
Ultrasonic Rear Parking Assist (URPA)...... 178
Accessory Power Outlet(s)........................ 181
Ashtray(s) and Cigarette Lighter................ 182
Climate Controls......................................... 182
Climate Control System............................. 182
Dual Automatic Climate Control System.... 186
Outlet Adjustment...................................... 192
Passenger Compartment Air Filter............. 192
Warning Lights, Gages, and Indicators..... 194
Instrument Panel Cluster........................... 194
Speedometer and Odometer...................... 196
Trip Odometer........................................... 196
Tachometer............................................... 196
Safety Belt Reminder Light........................ 196
Section 3 Instrument Panel
155

Operation
(
(Off):Turn the left knob to this position to turn
the climate control system off.
9(Fan):Turn the left knob 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 when the new mode is complete.
If the airow seems low when the fan speed is at
the highest setting, the passenger compartment
air lter may need to be replaced. For more
information, seePassenger Compartment Air
Filter on page 192andScheduled Maintenance
on page 442.
Temperature Control:Turn the center knob
clockwise or counterclockwise to warm or cool
the air coming through the outlets.
Use the right knob to select from the following
modes:
H(Vent):This mode directs outside air to the
instrument panel outlets.
)(Bi-Level):This mode directs half of the air to
the instrument panel outlets, and the remaining
air to the oor outlets. 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.
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
prevent outside air and odors from entering your
vehicle or to help heat or cool the air inside your
vehicle more quickly. 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.
183

4. Wait a few minutes for the system to
automatically regulate. Then adjust the
temperature as necessary to nd 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 your vehicle is started, the display will show
the interior temperature settings.
When the ENG/MET (English/metric) button on the
Driver Information Center (DIC) is pressed, the
display will show readings in Fahrenheit or Celsius.
Use the ENG/MET button to toggle between them.
AUTO (Automatic Air Conditioning):If AUTO
is selected on the fan or mode control, the
system will automatically control the air
conditioning compressor. The A/C compressor
will run automatically even at cool outside
temperatures in order to dehumidify the air.
The A/C indicator light will be lit when the system
is operating automatically, even at near
freezing outside temperatures. Press the A/C
button on the fan control to turn off the A/C.For improved window clearing performance in
defog or defrost modes, the A/C compressor will
run automatically in damp cool conditions.
h(Auto Recirculation):If AUTO is selected
on either the fan or mode control, the system
will automatically control the air inlet to supply
fresh outside air or recirculate 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, the
air inlet will reset back to AUTO operation.
Manual Operation
9(Fan):Turn the left knob either to the left or
right to adjust the fan speed. Turning this control
completely counterclockwise will turn on the
automatic fan operation.
If the airow seems low when the fan speed is at
the highest setting, the passenger compartment air
lter may need to be replaced. For more
information, seePassenger Compartment Air Filter
on page 192andScheduled Maintenance on
page 442.
187

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

Service........................................................ 325
Accessories and Modications................... 325
California Proposition 65 Warning.............. 326
Doing Your Own Service Work.................. 326
Adding Equipment to the Outside of
Your Vehicle.......................................... 327
Fuel............................................................. 327
Gasoline Octane........................................ 327
Gasoline Specications.............................. 328
California Fuel........................................... 328
Additives................................................... 328
Fuels in Foreign Countries........................ 329
Filling the Tank......................................... 330
Filling a Portable Fuel Container............... 332
Checking Things Under the Hood.............. 332
Hood Release........................................... 333
Engine Compartment Overview.................. 334
Engine Oil................................................. 337
Engine Oil Life System.............................. 340
Engine Air Cleaner/Filter............................ 342
Automatic Transaxle Fluid......................... 343
Engine Coolant.......................................... 347
Radiator Pressure Cap.............................. 351
Engine Overheating................................... 351Overheated Engine Protection
Operating Mode..................................... 353
Cooling System (3.8L V6 Engine).............. 354
Cooling System (4.6L V8 Engine).............. 360
Power Steering Fluid ................................. 364
Windshield Washer Fluid........................... 365
Brakes...................................................... 367
Battery...................................................... 370
Jump Starting............................................ 372
Headlamp Aiming........................................ 377
Bulb Replacement....................................... 380
Halogen Bulbs........................................... 380
Taillamps, Turn Signal, Stoplamps and
Sidemarker Lamps ................................. 380
Taillamps and Back-Up Lamps.................. 382
License Plate Lamp................................... 383
Replacement Bulbs................................... 383
Windshield Wiper Blade Replacement....... 383
Tires............................................................ 385
Tire Sidewall Labeling............................... 386
Tire Terminology and Denitions............... 389
Ination - Tire Pressure............................. 392
Tire Pressure Monitor System................... 393
Section 5 Service and Appearance Care
323

A. Radiator Pressure Cap. SeeRadiator Pressure
Cap on page 351.
B. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 365.
C. Remote Positive (+) Battery Terminal. See
Jump Starting on page 372.
D. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 428.
E. Engine Coolant Recovery Tank. See Index.
F. Power Steering Fluid Reservoir (Out of View).
SeePower Steering Fluid on page 364.
G. Electric Engine Cooling Fans. See Index.H. Engine Oil Dipstick (Out of View). See
“Checking Engine Oil” underEngine Oil on
page 337.
I. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 337.
J. Automatic Transaxle Fluid Dipstick. See
“Checking the Fluid Level” underAutomatic
Transaxle Fluid on page 343.
K. Brake Fluid Reservoir. See “Brake Fluid” under
Brakes on page 367.
L. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 342.
335

A. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 428.
B. Remote Positive (+) Battery Terminal. See
Jump Starting on page 372.
C. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 365.
D. Engine Coolant Surge Tank. See Index.
E. Power Steering Fluid. SeePower Steering
Fluid on page 364.
F. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 337.
G. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 337.
H. Brake Master Cylinder. See “Brake Fluid” under
Brakes on page 367.
I. Automatic Transaxle Fluid Cap and Dipstick
(Out of View). SeeAutomatic Transaxle
Fluid on page 343.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 342.Engine Oil
If the OIL LEVEL LOW ADD OIL message
appears in the Driver Information Center (DIC), it
means you need to check the engine oil level
right away. For more information, seeDIC
Warnings and Messages on page 221. You should
check the engine oil level regularly; this is an
added reminder.
Checking Engine Oil
It is a good idea to check the engine oil every time
you get fuel. In order to get an accurate reading,
the oil must be warm and the vehicle must be
on level ground.
The engine oil dipstick handle is a yellow loop.
SeeEngine Compartment Overview on page 334
for the location of the engine oil dipstick.
1. Turn off the engine and give the oil several
minutes to drain back into the oil pan. If you
do not do this, the oil dipstick might not
show the actual level.
2. Pull out the dipstick and clean it with a paper
towel or cloth, then push it back in all the
way. Remove it again, keeping the tip down,
and check the level.
337

Engine Air Cleaner/Filter
SeeEngine Compartment Overview on page 334
for the location of the engine air cleaner/lter.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/lter at the MaintenanceII
intervals and replace it at the rst oil change
after each 50,000 mile (83 000 km) interval. See
Scheduled Maintenance on page 442for more
information. If you are driving in dusty/dirty
conditions, inspect the lter at each engine oil
change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the air cleaner/lter, remove the lter
from the vehicle and lightly shake the lter to
release loose dust and dirt. If the lter remains
caked with dirt, a new lter is required.To inspect or replace the lter, do the following:
1. Loosen and remove the two screws on the
top of the engine air cleaner/lter cover.
2. Lift up the outboard side of the cover at an
angle while pulling toward you. This is
necessary due to the two hinges located on
the inboard side of the cover.
3. Remove the engine air cleaner/lter element
and any loose debris that may be found in the
air cleaner base.
4. Inspect or replace the air lter element.
342