2005 BUICK CENTURY service

Mirrors
Manual Rearview Mirror
Adjust all the mirrors so you can see clearly when
sitting in a comfortable driving position.
To reduce glare from other vehicles’ headlamps, pull the
lever at the bottom of the mirror, to the night position.
To return the mirror to the day position, push the lever.
Manual Rearview Mirror
with OnStar
®
The vehicle may have a mirror with Onstar®. It has a
lever located at the bottom between the two lamps.
Pull the lever to the night position to reduce glare from
other vehicles’ headlamps. Push the lever for the
day position.
There are two lamps located on the bottom of the
mirror. Press the button located next to each lamp to
turn it on or off.There are also three OnStar
®buttons located at the
bottom of the mirror. See your dealer for more
information on the system and how to subscribe to
OnStar
®. SeeOnStar®System on page 2-31for more
information about the services OnStar®provides.
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OnStar®System
OnStar®uses global positioning system (GPS) satellite
technology, wireless communications, and call centers
to provide you with a wide range of safety, security,
information, and convenience services.A complete OnStar
®user’s guide and the terms and
conditions of the OnStar®Subscription Service
Agreement are included in the vehicle’s glove box
literature. For more information, visit www.onstar.com or
www.onstarcanada.com. Contact OnStar
®at
1-888-4-ONSTAR (1-888-466-7827), or press the
OnStar
®button to speak to an OnStar®advisor 24 hours
a day, 7 days a week.
A completed Subscription Service Agreement is required
prior to delivery of OnStar
®services and prepaid
calling minutes are also required for OnStar®Personal
Calling and OnStar®Virtual Advisor use. Terms and
conditions of the Subscription Service Agreement can be
found at www.onstar.com or www.onstarcanada.com.
OnStar®Services
One of the following plans is normally included for a
specic duration with each vehicle equipped with
OnStar
®. You can upgrade or extend your OnStar®
service plan to meet your needs.
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Safe and Sound Plan

Automatic Notication of Air Bag Deployment
Emergency Services
Roadside Assistance
Stolen Vehicle Tracking
AccidentAssist
Remote Door Unlock/Vehicle Alert
Remote Diagnostics
Online Concierge
Directions and Connections Plan

All Safe and Sound Plan services
Driving Directions
RideAssist
Information and Convenience Services
Luxury and Leisure Plan

All Directions and Connections Plan services
Personal Concierge
OnStar®Personal Calling
As an OnStar®subscriber, the Personal Calling
capability is available if your hand-held cell phone is
lost, forgotten, or has a low battery. It is a hands-free
wireless phone that is integrated into the vehicle.
Calls can be placed nationwide using simple voice
commands with no additional contracts and no additional
roaming charges. To nd out more about OnStar
®
Personal Calling, refer to the OnStar®user’s guide in
the vehicle’s glove box or visit www.onstar.com or
www.onstarcanada.com; or speak with an OnStar
advisor by pressing the OnStar
®button or by calling
1-888-4-ONSTAR (1-888-466-7827).
OnStar®Virtual Advisor
Virtual Advisor is a feature of OnStar®Personal Calling
that uses minutes to access up-to-date weather and
traffic reports for your area, news and sports updates,
stock quotes, entertainment and more. You are also able
to listen and reply to your e-mail through your vehicle’s
speakers. Customize your information prole at
www.myonstar.com. See the OnStar
®user’s guide for
more information.
2-32

Malfunction Indicator Lamp.............................3-36
Oil Pressure Light.........................................3-40
Change Engine Oil Light................................3-40
Security Light...............................................3-41
Cruise Control Light......................................3-41
Low Washer Fluid Warning Light.....................3-41
Door/Trunk Ajar Warning Light........................3-42
Service Vehicle Soon Light............................3-42
Fuel Gage...................................................3-42
Low Fuel Warning Light.................................3-43Audio System(s).............................................3-44
Setting the Time...........................................3-44
Radio with CD..............................................3-45
Radio with Cassette and CD..........................3-53
Theft-Deterrent Feature..................................3-63
Audio Steering Wheel Controls.......................3-63
Radio Reception...........................................3-64
Care of Your Cassette Tape Player.................3-65
Care of Your CDs.........................................3-66
Care of Your CD Player................................3-66
Fixed Mast Antenna......................................3-66
Chime Level Adjustment................................3-66
Section 3 Instrument Panel
3-2

Airbag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows the air bag symbol. The system
checks the air bag’s electrical system for malfunctions.
The system check includes the air bag modules, the
wiring and the crash sensing and diagnostic module.
For more information on the air bag system, seeAirbag
System on page 1-49.
This light will come on
when the vehicle is
started, and it will ash for
a few seconds. Then
the light should go out.
This means the system is
functioning properly.
If the air bag readiness light stays on after the vehicle is
started, or comes on as the vehicle is being driven,
there may be an electrical problem and the air
bag system may not work properly. Have the vehicle
serviced right away.{CAUTION:
If the airbag readiness light stays on after you
start your vehicle, it means the airbag system
may not be working properly. The airbags in
your vehicle may not inate in a crash, or they
could even inate without a crash. To help
avoid injury to yourself or others, have your
vehicle serviced right away if the airbag
readiness light stays on after you start
your vehicle.
The air bag readiness light should ash for a few
seconds when you turn the ignition key to RUN. If the
light does not come on then, have it xed so it will
be ready to warn you if there is a problem.
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When the ignition is on, the brake system warning light
will also come on when the parking brake is set.
The light will stay on if the parking brake does not
release fully. If it stays on after the parking brake is
fully released, it means there is a brake problem.
If the light comes on while the vehicle is being driven,
pull off the road and stop carefully. The pedal may
be harder to push, or it 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 4-36.
{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
If the vehicle has anti-lock brakes, this warning light will
come on for a few seconds when the ignition key is
turned to RUN. If the anti-lock brake system warning light
stays on longer than normal after the engine has been
started, turn the ignition off. Or, if the light comes on and
stays on while the vehicle is being driven, 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 driving, the anti-lock brake system
needs service. If the light is on and the regular brake
system warning light is not on, the vehicle still has brakes,
but it does not have anti-lock brakes.
The anti-lock brake system warning light will come on
briey when the ignition key is turned to RUN. This is
normal. If the light does not come on then, have it xed
so it will be ready to warn you if there is a problem.United States
Canada
3-33

Enhanced Traction System
Warning Light
If the vehicle has the
Enhanced Traction
System, (ETS) the warning
light may come on for
the following reasons:
When the vehicle is shifted to SECOND (2) or
FIRST (1). To turn the system back on, shift
to THIRD (3) or AUTOMATIC OVERDRIVE (
X).
SeeEnhanced Traction System (ETS) on page 4-9.
If the vehicle needs service. Adjust your
driving accordingly.
When the parking brake is set with the engine
running, and the parking brake does not release fully.
After the parking brake is fully released and the
transaxle shift lever is in any position other than
FIRST (1) or SECOND (2). This means there is a
problem with the system.
If an engine-related problem affects the ETS and
turns the system off.
When the ETS warning light is on, the system will not
limit wheel spin. Adjust your driving accordingly.
Low Traction Light
If the vehicle has the
Enhanced Traction System
(ETS), this light will
come on when the system
is limiting wheel spin.
You may feel or hear the system working, but this is
normal. Slippery road conditions may exist if the
low traction light comes on, so adjust your driving
accordingly. The light will stay on for a few seconds after
the ETS stops limiting wheel spin. SeeEnhanced
Traction System (ETS) on page 4-9.
The low traction light also comes on briey when the
ignition key is turned to RUN. If the light does not come
on then, have it xed so it will function properly to
indicate when the Enhanced Traction System is active.
3-34

Tire Pressure Light
The vehicle may have a
tire pressure monitor that
indicates a large change
in the pressure in one tire.
The system stores the tire pressures of the vehicle’s
properly inated tires. The LOW TIRE light will come on
if the pressure in one tire becomes 12 psi (83 kPa)
lower than the other three tires. The LOW TIRE light will
not come on if the pressure in more than one tire is
low, if the system is not yet calibrated, or if the vehicle
is moving faster than 70 mph (110 km/h).
When the LOW TIRE light comes on, stop as soon as
possible and check all the tires for damage. If a tire
is at, seeIf a Tire Goes Flat on page 5-69. Also check
the tire pressure in all four tires as soon as possible.
SeeInation - Tire Pressure on page 5-60.
The light will stay on, while the ignition is on, until the
system is reset. SeeTire Pressure Monitor System
on page 5-61.
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 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.
3-36