2004 BUICK LESABRE Service engine soon

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-7
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Exterior Lamps.............................................3-14
Interior Lamps..............................................3-17
Head-Up Display (HUD).................................3-20
Accessory Power Outlets...............................3-22
Ashtrays and Cigarette Lighter........................3-23
Climate Controls............................................3-24
Climate Control System.................................3-24
Dual Automatic Climate Control System...........3-26
Outlet Adjustment.........................................3-30
Steering Wheel Climate Controls.....................3-31
Climate Controls Personalization.....................3-31
Warning Lights, Gages and Indicators.............3-32
Instrument Panel Cluster................................3-33Speedometer and Odometer...........................3-35
Tachometer.................................................3-35
Safety Belt Reminder Light.............................3-36
Air Bag Readiness Light................................3-36
Battery Warning Light....................................3-37
Brake System Warning Light..........................3-37
Anti-Lock Brake System Warning Light.............3-38
Traction Control System (TCS) Warning Light . . .3-39
Engine Coolant Temperature Gage..................3-40
Malfunction Indicator Lamp.............................3-40
Oil Pressure Light.........................................3-43
Security Light...............................................3-44
Cruise Control Light......................................3-44
Service Vehicle Soon Light............................3-44
Fuel Gage...................................................3-45
Driver Information Center (DIC).......................3-45
DIC Controls and Displays.............................3-46
DIC Warnings and Messages.........................3-49
DIC Vehicle Personalization............................3-50
Section 3 Instrument Panel
3-1

When the ignition is on, the brake system warning light
will also come on when you set your parking brake.
The light will stay on if your parking brake doesn’t
release fully. If you try to drive off with the parking brake
set, a chime will also come on until you release the
parking brake. If the light stays on after your parking
brake is fully released, it means you have a brake
problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push. Or, the pedal may go closer to the
oor. It may take longer to stop. If the light is still on,
have the vehicle towed for service. SeeTowing
Your Vehicle on page 4-31.
{CAUTION:
Your brake system may not be working
properly if the brake system warning light is on.
Driving with the brake system warning light on
can lead to an accident. If the light is still on
after you have pulled off the road and stopped
carefully, have the vehicle towed for service.
Anti-Lock Brake System
Warning Light
With the anti-lock brake
system, the light(s) will
come on when your engine
is started and may stay
on for several seconds.
That’s normal.
If the light stays on, turn the ignition to OFF. Or, if the
light comes on when you’re driving, stop as soon
as possible and turn the ignition off. Then start the
engine again to reset the system. If the light still stays
on, or comes on again while you’re driving, your vehicle
needs service. If the regular brake system warning
light isn’t on, you still have brakes, but you don’t have
anti-lock brakes. If the regular brake system warning
light is also on, you don’t have anti-lock brakes
and there’s a problem with your regular brakes. See
Brake System Warning Light on page 3-37.
The anti-lock brake system warning light will come on
briey when you turn the ignition key to RUN. This
is normal. If the light doesn’t come on then, have it xed
so it will be ready to warn you if there is a problem.
3-38

Engine Coolant Temperature Gage
This gage shows the
engine coolant
temperature. If the pointer
moves into the shaded
area, the engine is too hot.
A temperature indicator light will turn on and a chime
will sound.
If you have been operating your vehicle under normal
driving conditions, and the temperature indicator
light comes on, you should pull off the road, stop your
vehicle and turn off the engine as soon as possible.
Malfunction Indicator Lamp
Service Engine Soon Light
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The SERVICE ENGINE SOON light
comes on to indicate that there is a problem and service
is required. Malfunctions often will be indicated by the
system before any problem is apparent. This may
prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.
Notice:If you keep driving your vehicle with this
light on, after a while, your emission controls
may not work as well, your fuel economy may not
be as good and your engine may not run as
smoothly. This could lead to costly repairs that may
not be covered by your warranty. Standard version
shown, uplevel similar
3-40

Notice:Modications made to the engine,
transaxle, exhaust, intake or fuel system of your
vehicle or the replacement of the original tires with
other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modications to these systems could lead to costly
repairs not covered by your warranty. This may
also result in a failure to pass a required Emission
Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is
not running. If the light does not come on, have it
repaired. This light will also come on during a
malfunction in one of two ways:
Light Flashing— A misre condition has been
detected. A misre increases vehicle emissions
and may damage the emission control system on
your vehicle. Diagnosis and service may be
required.
Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
Reducing vehicle speed.
Avoiding hard accelerations.
Avoiding steep uphill grades.
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.
If the light stops ashing and remains on steady, see “If
the Light Is On Steady” following.
If the light continues to ash, when it is safe to do so,
stop the vehicle.Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart
the engine. If the light remains on steady, see “If
the Light Is On Steady” following. If the light is still
ashing, follow the previous steps and see your dealer
for service as soon as possible.
3-41

If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. SeeFilling Your Tank on page 5-7. The
diagnostic system can determine if the fuel cap has
been left off or improperly installed. A loose or missing
fuel cap will allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly installed
should turn the light off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel. See
Gasoline Octane on page 5-4. Poor fuel quality will
cause your engine not to run as efficiently as designed.
You may notice this as stalling after start-up, stalling
when you put the vehicle into gear, misring, hesitation
on acceleration or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the
light to turn on.If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
your dealer can check the vehicle. Your dealer has
the proper test equipment and diagnostic tools to x any
mechanical or electrical problems that may have
developed.
Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this
inspection could prevent you from getting a vehicle
registration.
Here are some things you need to know in order to help
your vehicle pass an inspection:
Your vehicle will not pass this inspection if the SERVICE
ENGINE SOON light is on or not working properly.
3-42

Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen if
you have recently replaced your battery or if your
battery has run down. The diagnostic system is
designed to evaluate critical emission control systems
during normal driving. This may take several days
of routine driving. If you have done this and your vehicle
still does not pass the inspection for lack of OBD
system readiness, your GM dealer can prepare the
vehicle for inspection.
Oil Pressure Light
If your vehicle has the
standard instrument panel
cluster, this light will
come on if there is a
problem with your vehicle’s
engine oil pressure.
If your vehicle has the optional gage cluster, you can
read your oil pressure directly from the Driver
Information Center (DIC). SeeDIC Controls and
Displays on page 3-46.The oil pressure light will come on briey when you turn
your key to RUN. That’s just a check to be sure the
light works. This is normal and doesn’t show a problem.
If it doesn’t come on and then go off, be sure to have
it xed so it will be there to warn you if there is a
problem.
When this lightcomeson andstayson, and a chime
sounds, it means oil isn’t going through the engine
properly. The oil could be low, or there might be some
other oil problem. See your dealer for service.
{CAUTION:
Do not keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance may
damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.
3-43

FUEL INFO (Information):Press this button to display
fuel information.
Press the FUEL INFO button until the display shows
FUEL ECONOMY AVERAGE. Average fuel economy is
viewed as a long term approximation of your overall
driving conditions. To learn the average fuel economy
from a new starting point, press the RESET button while
the average fuel economy is displayed in the DIC.
Press the FUEL INFO button until the display shows
FUEL ECONOMY INST. Instantaneous fuel economy
varies with your driving conditions, such as acceleration,
braking and the grade of the road being traveled. The
RESET button does not function in this mode.
Press the FUEL INFO button until the display shows
FUEL RANGE. The fuel range will calculate the
remaining distance you can drive without refueling. This
calculation is based on the average fuel economy for
the last 25 miles (40.25 km) driven, and the fuel
remaining in the fuel tank. The RESET button does not
function in this mode.
GAGE INFO (Information):Use this button to display
oil pressure, oil life, coolant temperature, tire pressure
and battery information.Press the GAGE INFO button until OIL PRESSURE
appears in the display. If there are no problems detected
with the oil pressure, the display will show OIL
PRESSURE NORMAL. If a low oil pressure condition is
detected, the display will show OIL PRESSURE
LOW. If you see the OIL PRESSURE LOW message,
your vehicle could be low on oil or the oil is not
going through the engine properly. See your dealer
for service.
Press the GAGE INFO button until COOLANT TEMP
appears in the display. If there are no problems detected
with the temperature, COOLANT TEMP NORMAL will
appear in the display. If the temperature is too high,
COOLANT TEMP HOT will appear in the display. If you
see the COOLANT TEMP HOT message, the engine
is overheated. You should pull off the road, stop
your vehicle and turn off your engine as soon as
possible. This manual explains what to do. SeeEngine
Overheating on page 5-26.
Press the GAGE INFO button until the display shows
BATTERY STATE. If the voltage is normal the display
will show BATTERY STATE NORMAL. If the voltage
drops below 10.5 volts, the display will show BATTERY
STATE LOW. If the voltage is above 16.2 volts, the
display will show BATTERY STATE HIGH. If the display
shows the high or low message, you need to have
your battery and charging system checked.
3-47

Press the GAGE INFO button until OIL LIFE INDEX
appears in the display. The OIL LIFE INDEX NORMAL
display will show an estimate of the oil’s remaining
useful life. When the oil life index is less than 10 percent,
the display will show OIL LIFE INDEX CHANGE OIL.
When you have the oil changed according to the
maintenance schedule, you will have to reset the oil life
monitor. SeePart A: Scheduled Maintenance Services
on page 6-4. To reset the Oil Life System, see
Engine Oil on page 5-13.
Press the GAGE INFO button until TIRE PRESSURE
appears in the display. TIRE PRESSURE NORMAL
is displayed when the check tire pressure system
believes your vehicle’s tire pressures are normal. If a
potential tire pressure problem is detected, the display
will show CHECK TIRE PRESSURE.
If you see the CHECK TIRE PRESSURE message, you
should stop as soon as you can and check all your
tires for damage. If a tire is at, seeIf a Tire Goes Flat
on page 5-73. Also check the tire pressure in all four
tires as soon as you can. SeeInation - Tire Pressure
on page 5-65andCheck Tire Pressure System on
page 5-66. There are times when you will have to reset
(calibrate) the Check Tire Pressure System. See
Check Tire Pressure System on page 5-66.RESET:This button, used along with other buttons, will
reset system functions.
ENG/MET (English/Metric):Use this button to change
the display between English and metric units.
DIC messages can be displayed in one of three
languages: English, French or Spanish. The language
of the display is set by pressing both the FUEL
INFO and RESET buttons for ve seconds. As the
buttons are held, each language will be displayed for
three seconds. Release the FUEL INFO and RESET
buttons when the desired language is displayed. All DIC
messages will now be in the selected language.
Language selection can also be done through the DIC
Personal Choice Programming. See “Language
Selection” later in this section.
3-48