1997 BUICK CENTURY service indicator

LOCK (B): Before you put the key into the ignition
switch, the switch is in
LOCK. It’s also the only position
from which you
can remove your key. This position
locks your ignition, steering wheel and transaxle. It’s
a
theft-deterrent feature.
OFF (C): This position lets you turn off the engine but
still turn
the steering wheel, It doesn’t lock the steering
wheel like
LOCK. Use OFF if you must have your
vehicle pushed or towed.
RUN (D): This position is where the key returns after you
start your vehicle. With the engine off, you can use RUN
to display some of your warning and indicator lights.
START (E): This position starts your engine.
A warning chime will sound if you open the driver’s
door when the ignition is
in OFF, LOCK or ACC and
the key is in the ignition.
NOTICE:
If your key seems stuck in LOCK and you can’t
turn it, be sure you are using the correct. key; if
so, is it all the way in? If it is, then turn the
steering wheel left and right while you turn the
key hard. But turn the key only with your hand.
Using a tool to force it
could break the key or the
ignition switch.
If none of this works, then your
vehicle needs service.
In case you cannot remove
your key from the ignition,
find the access
slot which is located underneath the
steering column below the lock cylinder.
To use this slot, remove the trim cap. Insert
a key or
screwdriver into the access slot and rotate the lock
cylinder.
You will now be able to remove your key from
the ignition. Be sure to replace the trim cap after use.
2-18
ProCarManuals.com

Malfunction Indicator Lamp
(Service Engine Soon Light)
Your Buick is equipped
with a computer which
monitors operation
of the
fuel, ignition and emission
SERVICE ENGINE control systems.
SOON
This system is called OBD I1 (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. (In Canada,
OBD I1 is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE
SOON
light comes on and a chime will sound 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.
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 doesn’t come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:
Light Flashing -- A misfire condition has been
detected.
A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service is required.
Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
2-62
ProCarManuals.com

Door/Trunk Ajar Warning Light
DOORDRUNK
Fuel Gage
This light will come on if
your trunk
or any door is
not completely closed.
Your fuel gage tells you
about how much fuel you
have left when the ignition
is on. When the indicator
nears
EMPTY (E), you still
have a little fuel left, but
you should get more soon. Here
are some things owners
ask about. All these
situations are normal and
do not show a problem with
your
fuel gage:
0
0
0
At the service station, the pump shuts off before the
gage reads
FULL (F).
It takes a little more or less fuel to fill up than the
gage indicated. For example, the gage may have
indicated
the tank was half full, but it actually took a
little more or less than half the tank’s capacity to
fill it.
The gage moves
a little when you turn a corner or
speed
up.
Low Fuel Light
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.
2-68
ProCarManuals.com

Cleaning may be done with a scrubbing action,
non-abrasive cleaning cassette with pads which scrub
the tape head as the hubs of the cleaner cassette turn.
A
scrubbing action cleaning cassette is available through
your dealership.
You may also choose a non-scrubbing action, wet-type
cleaner which uses a cassette with a fabric belt to clean
the tape head. This type
of cleaning cassette may not
clean as thoroughly as the scrubbing type cleaner.
After you clean the player, press and hold EJECT for
five seconds to reset the
CLN indicator. The radio will
display
--- to show the indicator was reset.
Cassettes are subject to wear and the sound quality
may degrade over time. Always make sure the cassette
tape is in good condition before you have your tape
player serviced.
Care of Your Compact Discs
Handle discs carefully. Store them in their original cases
or other protective cases and away from direct sunlight
and dust. If the surface
of a disc is soiled, dampen a
clean, soft cloth in a mild, neutral detergent solution and
clean it, wiping from the center to the edge.
Be sure never to touch the signal surface when handling
discs. Pick up discs by grasping the outer edges or the
edge of the hole and the outer edge.
Fixed Mast Antenna
The fixed mast antenna can withstand most car washes
without being damaged. If the mast should ever become
slightly bent, you can straighten
it out by hand. If the
mast is badly bent, as it might be by vandals, you should
replace it.
Check every once in a while to be sure the mast
is still
tightened to the fender.
3-36
ProCarManuals.com

Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect the airflow around it. This may cause wind noise
and affect windshield washer performance. Check with
your Buick dealer before adding equipment
to the
outside
of your vehicle.
Fuel
Use regular unleaded gasoline rated at 87 octane or
higher. At a minimum, it should meet specifications
ASTM D4814 in the United States and CGSB 3.5-M93
in Canada. Improved gasoline specifications have been
developed by the American Automobile Manufacturers
Association (AAMA) for better vehicle performance
and engine protection. Gasolines meeting the AAMA
specification could provide improved driveability and
emission control system protection compared
to
other gasolines.
Be sure the posted octane is at least
87. If the octane is
less than
87, you may get a heavy knocking noise when
you drive. If it’s bad enough, it can damage your engine. If
you’re using fuel rated
at 87 octane or higher and you
hear heavy knocking, your engine needs service. But
don’t worry if
you hear a little pinging noise when
you’re accelerating or driving up a hill. That’s normal,
and you don’t have to buy a higher octane fuel
to get rid
of pinging. It’s the heavy, constant knock that means
you have a problem.
If your vehicle
is certified to meet California Emission
Standards (indicated on the underhood emission control
label), it is designed to operate on
fuels that meet
California specifications. If such fuels are not available
in states adopting California emissions standards, your
vehicle will operate satisfactorily on fuels meeting
federal specifications, but emission control system
performance may be affected. The malfunction indicator
lamp on your instrument panel may turn
on and/or
your vehicle may fail a smog-check
test. If this occurs,
return
to your authorized Buick dealer for diagnosis
to determine the cause of failure. In the event it is
determined that the cause of the condition is the type of
fuels used, repairs may
not be covered by your warranty.
6-3
ProCarManuals.com

Some gasolines that are not reformulated for low
emissions contain
an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT);
ask your service station operator whether or not his fuel
contains MMT. General Motors does not recommend the
use of such gasolines. If fuels containing MMT are used,
spark plug
life may be reduced and your emission
control system performance may be affected. The
malfunction indicator lamp on your instrument panel
may turn
on. If this occurs, return to your authorized
Buick dealer for service.
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent deposits from forming
in your engine and fuel
system, allowing your emission control system
to
function properly. Therefore, you should not have to add
anything
to the fuel. In addition, gasolines containing
oxygenates, such as ethers and ethanol, and
reformulated gasolines may be available in your area
to
help clean the air. General Motors recommends that you
use these gasolines if
they comply with the
specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that
contains methanol. Don’t use it.
It can corrode
metal parts in your fuel system and also damage plastic and rubber parts. That damage wouldn’t
be covered under your warranty.
6-4
ProCarManuals.com

Brake Wear
NOTICE:
0
0
Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops
of mineral-based oil, such as engine
oil, in your brake system can damage brake
system parts
so badly that they’ll have to be
replaced. Don’t let someone put in the
wrong kind of fluid.
If you spill brake fluid on your vehicle’s
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle.
If you do, wash it off
immediately. See “Appearance Care” in
the Index. Your
Buick has front disc brakes and rear drum brakes.
Disc brake pads have built-in wear indicators that make
a
high-pitched warning sound when the brake pads are worn
and new pads are needed. The sound may come and go or
be heard all the time
your vehicle is moving (except when
you are
pushing on the brake pedal firmly).
I
I
The brake wear warning sound means that soon
your brakes won’t work well. That could lead
to
an accident. When you hear the brake wear
warning sound, have your vehicle serviced.
I NOTICE:
Continuing to drive with worn-out brake pads
could result in costly brake repair.
6-28
ProCarManuals.com

; Time for New Tires
I One wav to tell when it’s .,
time for new tires is to
check the treadwear
indicators, which will
appear when your tires have
only 1/16 inch (1.6 mm) or
less of tread remaining.
You need a new tire if any
of the following statements
are true:
You can see the indicators at three or more places
around the tire.
You can see cord or fabric showing through the
tire’s rubber.
0 The tread or sidewall is cracked, cut or snagged deep
enough
to show cord or fabric.
0 The tire has a bump, bulge or split.
The tire has a puncture, cut or other damage that
can’t be repaired well because of the size or location
of the damage.
Buying New Tires
To find out what kind and size of tires you need, look at
the Tire-Loading Information label.
The tires installed on your vehicle when
it was new had
a Tire Performance Criteria Specification (TPC Spec)
number on each tire’s sidewall. When you get new tires,
get ones with that same TPC Spec number. That way
your vehicle will continue
to have tires that are designed
to give proper endurance, handling, speed rating,
traction, ride and other things during normal service on
your vehicle. If your tires have an all-season tread
design, the TPC number will be followed by an
“MS”
(for mud and snow).
6-40
ProCarManuals.com