page 334 BUICK LUCERNE 2007 Owner's Manual

HEATED WASH (Washer) FLUID
SYSTEM OFF
This message displays when you manually turn off
the heated windshield washer uid system or when
the system automatically turns off. See “Heated
Washer Fluid” underWindshield Washer on
page 166for more information.
HEATING WASH (Washer) FLUID
WASH (Washer) WIPES PENDING
This message displays when you turn on the
heated windshield washer uid system. See
“Heated Washer Fluid” underWindshield Washer
on page 166for more information.
HOOD OPEN
If your vehicle has the remote start feature, this
message displays when the hood is not closed
properly. When this message appears, make sure
that the hood is closed completely. SeeHood
Release on page 333.
ICE POSSIBLE DRIVE WITH CARE
This message displays when the outside air
temperature is cold enough to create icy road
conditions. Adjust your driving accordingly.
LEFT REAR DOOR OPEN
This message displays when the driver’s side rear
door is not closed properly. When this message
appears, make sure that the passenger’s door
is closed completely.
OIL LEVEL LOW ADD OIL
On some vehicles, this message displays when
the vehicle’s engine oil is low. Fill the oil to the
proper level as soon as possible. SeeEngine
Compartment Overview on page 334for the engine
oil ll location. Also, seeEngine Oil on page 337for
information on the kind of oil to use and the proper
oil level.
224

TURN SIGNAL ON
This message displays as a reminder to turn off the
turn signal if you drive your vehicle for more than
about 0.75 mile (1.2 km) with a turn signal on. See
Turn Signal/Multifunction Lever on page 162.
This message displays and a chime sounds only
when the ignition is in RUN. The message will
not disappear until the turn signal is manually
turned off, or a turn is completed.
WASHER FLUID LOW ADD FLUID
This message displays when the windshield
washer uid is low. Fill the windshield washer
reservoir as soon as possible. SeeEngine
Compartment Overview on page 334for the
location of the windshield washer reservoir. Also,
seeWindshield Washer Fluid on page 365for
more information.
DIC Vehicle Customization
Your vehicle has customization capabilities that
allow you to program certain features to one
preferred setting. Customization features can only
be programmed to one setting on the vehicle and
cannot be programmed to a preferred setting for
two different drivers.
All of the customization options may not be
available on your vehicle. Only the options
available will be displayed on your DIC.
The default settings for the customization features
were set when your vehicle left the factory, but
may have been changed from their default
state since then.
The customization preferences are automatically
recalled.
To change customization preferences, use the
following procedure.
231

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

When to Add Engine OilIf the oil is below the cross-hatched area at the tip
of the dipstick, you will need to add at least one
quart/liter of oil. But you must use the right
kind. This section explains what kind of oil to use.
For engine oil crankcase capacity, seeCapacities
and Specications on page 436.
Notice:Do not add too much oil. If the engine
has so much oil that the oil level gets above the
cross-hatched area that shows the proper
operating range, the engine could be damaged.
SeeEngine
Compartment Overview
on page 334for the
location of the engine oil
ll cap.
Be sure to add enough oil to put the level
somewhere in the proper operating range in the
cross-hatched area. Push the dipstick all the
way back in when you are through.
3.8L V6 Engine
4.6L V8 Engine
338

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

Then, without shutting off the engine, follow
these steps:
For the 3.8L V6 engine
the transaxle uid
dipstick top is a round
loop with this symbol.
SeeEngine
Compartment Overview
on page 334for more
information on location.
1. Pull out the dipstick and wipe it with a clean
rag or paper towel.
2. Push it back in all the way, wait three seconds
and then pull it back out again.3. Check both sides of the dipstick, and read the
lower level. The uid level must be in the
cross-hatched area.
4. If the uid level is in the acceptable range,
push the dipstick back in all the way.
3.8L V6 Engine
345

Checking Coolant (3.8L V6 Engine)
This symbol is located
on the cap of the engine
coolant recovery tank.
The engine coolant recovery tank is located in the
engine compartment on the passenger’s side of
the vehicle. SeeEngine Compartment Overview on
page 334for more information on location.
The vehicle must be on a level surface. When
your engine is cold, the coolant level should be at
FULL COLD or a little higher. When your engine
is warm, the level should raise.
Adding Coolant
If you need more coolant, add the proper
DEX-COOL®coolant mixture at the coolant
recovery tank, but be careful not to spill it.
{CAUTION:
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn
you badly. With the coolant recovery tank,
you will almost never have to add coolant
at the radiator. Never turn the radiator
pressure cap — even a little — when
the engine and radiator are hot.
{CAUTION:
You can be burned if you spill coolant on
hot engine parts. Coolant contains ethylene
glycol, and it will burn if the engine parts
are hot enough. Do not spill coolant on a
hot engine.
Occasionally check the coolant level in the radiator.
For information on how to add coolant to the
radiator, see Index. When replacing the pressure
cap, make sure to turn cap until it clicks.
349

Checking Coolant (4.6L V8 Engine)
The engine coolant
surge tank is located
toward the rear of
the engine compartment
on the passenger’s
side of the vehicle.
For more information on location, seeEngine
Compartment Overview on page 334.{CAUTION:
Turning the surge tank pressure cap when
the engine and radiator are hot can allow
steam and scalding liquids to blow out
and burn you badly. Never turn the surge
tank pressure cap — even a little — when
the engine and radiator are hot.
The vehicle must be on a level surface. When
your engine is cold, the coolant level should be at
the FULL COLD mark, located on the side of
the surge tank that faces the engine.
350

Adding Coolant
If you need more coolant, add the proper
DEX-COOL®coolant mixture at the coolant surge
tank, but only when the engine is cool.
{CAUTION:
You can be burned if you spill coolant on
hot engine parts. Coolant contains
ethylene glycol, and it will burn if the
engine parts are hot enough. Do not spill
coolant on a hot engine.
Occasionally check the coolant level in the
radiator. For information on how to add coolant to
the radiator, see Index. When replacing the
pressure cap, make sure to turn cap until it clicks.
Radiator Pressure Cap
Notice:The radiator cap on your vehicle is a
pressure-type cap and must be tightly
installed to prevent coolant loss and possible
engine damage from overheating. Be sure
the arrows on the cap line up with the overow
tube on the radiator ller neck.
SeeEngine Compartment Overview on page 334
for more information on location.
Engine Overheating
You will nd a warning light about a hot engine as
well as an engine coolant temperature gage on
your vehicle’s instrument panel cluster.
351

3. Fill the coolant
surge tank with the
proper mixture
to the FULL COLD
mark on the
side of the coolant
surge tank.
4. With the coolant surge tank cap off, start the
engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for
the engine cooling fans.
By this time, the coolant level inside the
coolant surge tank may be lower. If the level
is lower, add more of the proper mixture
to the coolant surge tank until the level
reaches the FULL COLD mark on the side of
the coolant surge tank.
5. Then replace the cap. Be sure the cap is
hand-tight and fully seated.Power Steering Fluid
SeeEngine
Compartment Overview
on page 334for
information on the
location of the power
steering uid reservoir.
When to Check Power Steering Fluid
It is not necessary to regularly check power
steering uid unless you suspect there is a leak in
the system or you hear an unusual noise. A
uid loss in this system could indicate a problem.
Have the system inspected and repaired.
364