BUICK CENTURY 2004 Owner's Manual

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 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, your GM dealer can prepare the
vehicle for inspection.
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Oil Pressure Light
If the vehicle has a an oil
problem, this light may
stay on after the engine is
started, or come on
while you are driving.
This light indicates that oil is not going through the
engine quickly enough to keep it lubricated. The engine
could be low on oil or could have some other oil
problem. Have it xed right away.
The oil light could also come on in the following
situations:
The light will come on briey when the ignition is
turned on to show that it is working properly. If it
does not come on with the ignition on, there may be
a problem with the fuse or bulb. Have it xed
right away.
Sometimes when the engine is idling at a stop, the
light may blink on and off. This is normal.
{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.
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Change Engine Oil Light
The CHANGE OIL SOON
light should come on
briey as a bulb check
when the engine is started.
If the light does not
come on, have it serviced.
If the CHANGE OIL SOON light comes on and stays on
after the engine is started, have the oil changed.
For additional information, see “When to Change Engine
Oil (GM Oil Life System)” underEngine Oil on
page 5-13. To reset the CHANGE OIL SOON light, see
“How to Reset the System” underEngine Oil on
page 5-13.
Security Light
The SECURITY light will
come on when the key is
turned to START, and
will stay on until the
vehicle starts.
It will also ash if the ignition key is too dirty or wet for
the PASS-Key
®II system to read the resistor pellet.
SeePASS-Key®II on page 2-17.
If the resistor pellet is damaged or missing, the light will
come on.
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Cruise Control Light
The CRUISE light comes
on whenever the cruise
control is set. See “Cruise
Control” underTurn
Signal/Multifunction Lever
on page 3-5.
Low Washer Fluid Warning Light
If the LOW WASH light
comes on when the
windshield washer paddle
is used, this indicates
that the uid is low in the
windshield washer
reservoir.
The light will also come on briey when the ignition is
turned on to show that it is working properly.
Door/Trunk Ajar Warning Light
The DOOR/TRUNK light
will come on if the trunk or
any door is not completely
closed.
Service Vehicle Soon Light
The SERVICE VEHICLE
SOON light will come on if
there are certain
non-emission related
vehicle problems.
These problems may not be obvious and may affect
vehicle performance or durability. Consult your
dealership for necessary repairs to maintain top vehicle
performance. The light will come on briey when
ignition is turned on to show that it is working properly.
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Fuel Gage
The fuel gage indicates about how much fuel is left in
the fuel tank when the ignition is on. When the indicator
nears empty, there is still a little fuel left, but you
should get more fuel 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 ll 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 ll it.
The gage pointer may move while cornering,
braking or accelerating.
The gage may not indicate empty when the ignition
is turned off. United StatesCanada
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Low Fuel Warning Light
If the vehicle’s fuel is low, a circular light on the
instrument panel cluster will come on and a chime will
sound periodically until fuel is added to the fuel tank.
It will also come on for a few seconds when the ignition
is turned on as a check to indicate it is working. If it
does not come on then, have it xed.
Audio System(s)
Notice:Before you add any sound equipment to
your vehicle – like a tape player, CB radio, mobile
telephone or two-way radio – be sure you can
add what you want. If you can, it’s very important to
do it properly. Added sound equipment may
interfere with the operation of your vehicle’s engine,
radio or other systems, and even damage them.
Your vehicle’s systems may interfere with the
operation of sound equipment that has been added
improperly.
So, before adding sound equipment, check with
your dealer and be sure to check federal rules
covering mobile radio and telephone units.
Your audio system has been designed to operate easily
and to give years of listening pleasure. You will get
the most enjoyment out of it if you acquaint yourself with
it rst. Figure out which radio you have in your vehicle,
nd out what your audio system can do and how to
operate all of its controls to be sure you’re getting the
most out of the advanced engineering that went into it.
Your vehicle has a feature called Retained Accessory
Power (RAP). With RAP, you can play your audio
system even after the ignition is turned off. See
“Retained Accessory Power (RAP)” underIgnition
Positions on page 2-19. United States
Canada
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Setting the Time
Press and hold H until the correct hour appears on the
display. AM will appear for morning hours. Press
and hold M until the correct minute appears on the
display. The time may be set with the ignition on or off.
To synchronize the time with an FM station broadcasting
Radio Data System (RDS) information, press and
hold H and M at the same time until TIME UPDATED
appears on the display. If the time is not available from
the station, NO UPDATE will appear on the display.
RDS time is broadcast once a minute. Once you have
tuned to an RDS broadcast station, it may take a
few minutes for your time to update.
Radio with CD
Playing the Radio
PWR (Power):Push this knob to turn the system on
and off.
VOL (Volume):Turn this knob to increase or to
decrease the volume.
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SCV (Speed-Compensated Volume):With SCV, your
audio system adjusts automatically to make up for
road and wind noise as you drive. To get to SCV, push
the TUNE/AUDIO button repeatedly until SPEED
VOL is displayed. Turn the TUNE/AUDIO button to
select OFF, MIN, MED, or MAX. Each higher setting
allows for more volume compensation at faster vehicle
speeds. Then, as you drive, SCV automatically
increases the volume, as necessary, to overcome noise
at any speed. The volume level should always sound
the same to you as you drive. If you don’t want to
use SCV, select OFF.
DISP (Display):Press this button to switch the display
between the radio station frequency and the time.
The time can be displayed with the ignition on or off.
Finding a Station
BAND:Press this button to switch between FM1, FM2,
and AM. The display will show your selection.TUNE:Turn this knob to select radio stations.
©SEEK¨:Press the right or the left arrow to go to
the next or to the previous station and stay there.
To scan stations, press and hold either SEEK arrow for
two seconds until SCAN appears on the display. The
radio will go to a station, play for a few seconds, then go
on to the next station. Press either SEEK arrow again
to stop scanning.
To scan preset stations, press and hold either SEEK
arrow for more than four seconds until PSCAN and the
preset number appear on the display. You will hear
a double beep. The radio will go to the rst preset
station stored on your pushbuttons, play for a few
seconds, then go on to the next preset station. Press
either SEEK arrow again to stop scanning presets.
The radio will seek and scan only to stations that are in
the selected band and only to those with a strong
signal.
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Setting Preset Stations
The six numbered pushbuttons let you return to
your favorite stations. You can set up to 18 stations
(six FM1, six FM2, and six AM) by performing the
following steps:
1. Turn the radio on.
2. Press BAND to select FM1, FM2, or AM.
3. Tune in the desired station.
4. Press EQ to select the equalization.
5. Press and hold one of the six numbered
pushbuttons until you hear a beep. Whenever you
press that numbered pushbutton, the station
you set will return and the equalization that you
selected will be automatically stored for that
pushbutton.
6. Repeat the steps for each pushbutton.
Setting the Tone (Bass/Treble)
AUDIO:Push and release AUDIO until BASS, MID, or
TREBLE appears on the display. Then turn the
AUDIO knob to increase or to decrease. If a station is
weak or noisy, you may want to decrease the treble.
To adjust bass, midrange, or treble to the middle
position, select BASS, MID, or TREBLE. Then push and
hold AUDIO for more than two seconds until you hear
a beep. BASS and a zero, MID and a zero, or TREBLE
and a zero will appear on the display.
To adjust both tone controls and both speaker controls
to the middle position, end out of audio mode by
waiting ve seconds without making any changes. Then
push and hold AUDIO for more than two seconds
until you hear a beep. ALL CENTERED will appear on
the display.
EQ (Equalizer):Press this button to select customized
equalization settings designed for country/western,
jazz, talk, pop, rock, and classical.
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Adjusting the Speakers (Balance/Fade)
AUDIO:To adjust the balance between the right
and the left speakers, push and release AUDIO until
BAL appears on the display. Then turn the AUDIO knob
to move the sound toward the right or the left speakers.
A bar graph with indicators will show how the sound
is balanced.
To adjust the fade between the front and the rear
speakers, push and release AUDIO until FADE appears
on the display. Then turn the AUDIO knob to move
the sound toward the front or the rear speakers. A bar
graph with indicators will show how the sound is
balanced.
To adjust balance or fade to the middle position, select
BAL or FADE. Then push and hold AUDIO for more
than two seconds until you hear a beep. The indicator
will be centered on the display.
To adjust both tone controls and both speaker controls
to the middle position, end out of audio mode by
waiting ve seconds without making any changes. Then
push and hold AUDIO for more than two seconds
until you hear a beep. ALL CENTERED will appear on
the display.
Radio Data System (RDS)
Your audio system is equipped with a Radio Data
System (RDS). RDS features are available for use only
on FM stations that broadcast RDS information.
With RDS, your radio can do the following:
Seek to stations broadcasting the selected type of
programming
Receive announcements concerning local and
national emergencies
Display messages from radio stations
Seek to stations with traffic announcements
This system relies upon receiving specic information
from these stations and will only work when the
information is available. In rare cases, a radio station
may broadcast incorrect information that will cause
the radio features to work improperly. If this happens,
contact the radio station.
While you are tuned to an RDS station, the station
name or the call letters will appear on the display,
instead of the frequency. RDS stations may also provide
the time of day, a program type (PTY) for current
programming, and the name of the program being
broadcast.
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