light BUICK REGAL 2002 Service Manual

2-77
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly. See
ªFilling Your Tankº in the Index. It will take a few
driving trips to turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel. See
ªFuelº in the Index. 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, misfiring, 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,
have your dealer or qualified service center check the
vehicle. Your dealer has the proper test equipment and
diagnostic tools to fix 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.
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, see your dealer or qualified service center to
prepare the vehicle for inspection.

2-78 Oil Pressure Light
If you have a problem
with your oil, this light
may stay on after you start
your engine, or come on
when you are driving.
This indicates that oil is not going through your engine
quickly enough to keep it lubricated. The engine could
be low on oil or could have some other oil problem.
Have it fixed right away.
The oil light could also come on in the
following situations:

The light will come on briefly when you turn on
the ignition to show you that it is working properly.
(If it doesn't come on with the ignition on, you may
have a problem with the fuse or bulb. Have it fixed
right away.)

Sometimes when the engine is idling at a stop, the
light may blink on and off. This is normal.CAUTION:
Don't keep driving if the oil pressure is low.
If you do, your engine can become so hot that
it catches fire. You or others could be burned.
Check your oil as soon as possible and have your
vehicle serviced.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.

2-79 Low Oil Level Light
Your engine is equipped
with an oil level monitoring
system. When the ignition
key is turned on, the
LOW OIL light will
come on briefly.
If the light does not come on briefly, have it fixed so it
will be ready to warn you if there's a problem.
If the light stays on, stop the vehicle on a level surface
and turn the engine off. Check the oil level using the
engine oil dipstick. (See ªEngine Oilº in the Index.)
If the light does not come on briefly, have the low oil
level sensor system repaired so it will be ready to warn
you if there's a problem.
The oil level monitoring system only checks oil level
during the brief period between key on and engine
crank. It does not monitor engine oil level when the
engine is running. Additionally, an oil level check is
only performed if the engine has been turned off for a
considerable period of time, allowing the oil normally in
circulation to drain back into the oil pan.
Change Oil Soon Light
The CHANGE OIL SOON
light should come on briefly
as a bulb check when you
start the engine. If the
light doesn't come on,
have it serviced.
If the CHANGE OIL SOON light comes on and stays
on after you start the engine, have the oil changed.
For additional information, see ªEngine Oil, When to
Changeº in the Index. To reset the CHANGE OIL
SOON light, seeªOil Life Systemº in the Index.

2-80 Security Light
The SECURITY light will
come on when you turn the
key to START and stay on
until the vehicle starts.
It will also flash if your ignition key is too dirty or wet
for the PASS
-Key
II system to read the resistor pellet.
See ªPASS
-Key IIº in the Index.
If the resistor pellet is damaged or missing, the light will
come on.
Cruise Light
The CRUISE light comes
on whenever you set your
cruise control. See ªCruise
Controlº in the Index.
Service Vehicle Soon Light
The SERVICE VEHICLE
SOON light will come
on if you have certain
non
-emission related
vehicle problems.
These problems may not be obvious and may affect
vehicle performance or durability. Consult a qualified
dealership for necessary repairs to maintain top vehicle
performance. The light will come on briefly when your
ignition is turned on to show that it is working properly.
Low Washer Fluid Warning Light
The LOW WASH light
will come on when your
windshield washers are
working and the fluid
container is low.
The light will also come on briefly when your ignition is
turned on to show that it is working properly.

2-81 Door/Trunk Ajar Warning Light
The DOOR/TRUNK light
will come on if your trunk
or any door is not
completely closed.
Fuel Gage
United States CanadaYour fuel gage tells you about how much fuel you have
left when the ignition is on. When the indicator nears
empty, you still have a little fuel left, but you should
get more soon.
Here are four things that some owners ask about. All
these things are normal and do not indicate that anything
is wrong with the fuel gage:

At the gas station, the pump shuts off before the gage
reads full.

It takes more (or less) fuel to fill up than the gage
reads. For example, the gage reads half full, but it
took more (or less) than half of the tank's capacity
to fill it.

The gage pointer may move while cornering, braking
or speeding up.

The gage may not indicate empty when the ignition
is turned off.

2-82 Low Fuel Light
United States Canada
If your fuel is low, a circular light on your instrument
panel cluster will come on and stay on and a chime will
sound periodically until you add fuel.
It will also come on for a few seconds when you first
turn on the ignition as a check to show you it's working.
If it doesn't come on then, have it fixed.
Driver Information Center (Option)
The Driver Information Center (DIC), located below the
tachometer on the instrument panel cluster, gives you
important safety and maintenance facts. When you turn
the ignition on, the entire center lights up for just a
few seconds.
3800 V6 Engine

2-84 Modes
AVG ECON (Average Economy): Shows your average
fuel economy since you last reset this mode. Average
fuel economy is viewed as a long term approximation of
your overall driving and 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.
INSTANTANEOUS FUEL ECONOMY: Shows your
current fuel economy. Instantaneous fuel economy
varies with your driving conditions, such as
acceleration, braking and the grade of the road being
traveled. The instantaneous fuel economy display cannot
be reset, therefore the reset button has no effect while in
this mode.OIL LIFE MONITOR: Shows an estimate of the oil's
remaining useful life. When the oil life index is less than
10%, the CHANGE OIL SOON light will come on.
When you have the oil changed according to the
maintenance schedule (see ªMaintenance Scheduleº in
the Index), you will have to reset the CHANGE OIL
SOON light.
To reset the CHANGE OIL SOON light, see ªOil Life
Systemº in the Index.
Also, see ªEngine Oil, When to Changeº and
ªMaintenance Scheduleº in the Index.
RANGE: Shows the approximate distance you can
drive without refueling. This is based on the amount of
fuel in the tank and on the fuel economy of the most
recent 25 miles (40 km). Pressing RESET while in this
mode will have no effect.
BOOST GAGE: If you have the supercharged engine,
this gage will show the amount of boost your engine is
receiving. Pressing RESET while in this mode will have
no effect.

3-3
Mode Knob
The right knob has several settings to control the
direction of airflow. To access the various modes
available, turn the mode knob to the desired mode.
MAX (Maximum Air Conditioning): This setting
recirculates much of the air inside your vehicle and
sends it through the instrument panel outlets. The air
conditioning compressor will run automatically in this
setting unless the outside temperature is below 40
F
(4
C). (Even when the compressor is running, you can
control the temperature.)
VENT (Ventilation): This setting brings in outside air
and directs it through the instrument panel outlets.
BI
-LEV (Bi-Level): This setting brings in outside air
and directs it two ways. Half of the air is directed
through the instrument panel outlets. Most of the
remaining air is directed through the floor ducts and a
little to the defrost and side window vents.
HTR (Heater): This setting sends most of the air
through the ducts near the floor. The rest comes out of
the defroster and side window vents.BLEND: This setting allows half of the air to go to the
floor ducts and half to the defroster and side window
vents. The air conditioning compressor will run
automatically in this setting unless the outside
temperature is below 40
F (4
C). (Even when the
compressor is running, you can control the temperature.)
DEF (Defrost): This setting directs most of the air
through the defroster and side window vents. Some of
the air goes to the floor ducts and the side window vents.
The air conditioning compressor will run automatically
in this setting unless the outside temperature is below
40
F (4
C). (Even when the compressor is running,
you can control the temperature.)
Mode Button
A/C (Air Conditioning): Press this button to turn
the air conditioning on and off. The system will cool and
dehumidify the air inside the vehicle when the A/C light
is on.

3-5
FAN: Press the up arrow to increase fan speed and
the down arrow to decrease fan speed. The fan must be
turned on for the air conditioning compressor to operate.
TEMP (Temperature): The TEMP switch sets the
temperature for the entire cabin when the light on the
DUAL light button isn't lit. When the DUAL button
light is lit, the TEMP switch sets the temperature for
the driver's side only. Press the up arrow to raise the
temperature and press the down arrow to lower the
temperature. The display will show your selection
for a few seconds, then the outside temperature will
be displayed.
VENT: This setting turns the air conditioning
compressor on and off. The indicator is lit when
the compressor is turned off. Recirculation is not
permitted when the compressor is off. The system
will try to control the temperature automatically, but
without the compressor.
VENT is not permitted in FRONT defrost mode. If the
VENT button is pushed while in FRONT defrost mode,
the indicator will light briefly and then turn off.RECIRC (Recirculation): This setting recirculates
much of the air inside your vehicle. This setting is not
permitted in FRONT defrost mode and is only permitted
in WINDSHIELD/FLOOR mode if the air conditioning
compressor is turned on. The indicator light will be lit
when recirculation is engaged, but will light briefly and
then turn off if selected when not permitted.
Operating the climate control system in the RECIRC
mode may cause fogging of the vehicle's windows when
the weather is cold and damp. To clear the fog, switch
the system to either WINDSHIELD/FLOOR or
WINDSHIELD mode and increase the fan speed. To
avoid refogging of the windows, operate the system with
RECIRC off.
FRONT: This setting brings in outside air and
directs most of the air through the defrost vent. Some
of the air also goes to the floor ducts and the side
window defogger outlets. The indicator on the button
will light and WINDSHIELD will be seen on the
display. The air conditioning compressor will run
automatically in this setting unless the outside
temperature is below 40
F (4
C).

3-6
PASSENGER CONTROL: The PASSENGER
CONTROL with the arrows adjust the temperature on
the passenger's side so it is warmer or cooler than the
temperature for the driver's side. Push the DUAL button
so that the indicator light is lit. Press the right arrow
button to raise the temperature. Press the left arrow
button to lower the temperature. The display will not
show the passenger's temperature, only that of the
driver. Indicators in the passenger control section will
show passenger's side temperature relative to the
driver's set temperature.

The amber light indicates the same temperature as
set for the driver.

The red lights indicate a warmer temperature than
that of the driver.

The blue lights indicate a cooler temperature than
that of the driver.
AUTO (Automatic Control): For the most efficient
operation, you should set the system temperature and
press AUTO. The system will then select the best fan
speed and airflow settings to keep you comfortable. The
air conditioning compressor will run if the outside
temperature is above 40F (4C). You may notice a
delay of two to three minutes before the fan comes on at
start up in cool weather.If you push the AUTO button, the system will control
the fan speed and airflow and will maintain the selected
temperature. For the automatic system to function, the
temperature must be set between 61F (16C)
and 89F (31C).
The driver's temperature and passenger's temperature
settings will be automatically maintained even if manual
overrides have been selected except for settings at 60F
(15C) and 90F (32C).
Setting the temperature to 90F (32C) will lock
control in full hot, direct air to the floor, and increase the
fan speed to high. The system will not return to
automatic temperature control until the temperature
setting is lowered.
Setting the temperature to 60F (15C) will lock control
in full cold, recirculate interior air, direct air to outlets
on panel and increase blower speed to high. The system
will not return to automatic temperature control until the
temperature setting is raised.
OFF: Press this button to turn the air compressor off.
Heating
On cold days, use HTR with the driver's and
passenger's temperature levers all the way in the red
area. This system will bring in outside air, heat it, and
send it to the floor ducts.