1999 BUICK CENTURY keyless entry

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2-13
To replace the battery:
1. Insert a flat object like a dime into the slot on the
back of the transmitter. Gently pry apart the front
and back.
2. Remove the old battery and replace it with the new
one. (Use type CR2032 or an equivalent.) Make sure
the positive (+) side of the battery is facing down.
Do not use a metal object to remove the old battery.
3. Snap the top and bottom together, making sure the
halves are together tightly so water won't get in.
4. Test the operation of the transmitter with your
vehicle. If the transmitter does not work, try
resynchronizing the transmitter. (See
ªResynchronizationº following.)
5. Resynchronize and then test the transmitter.Resynchronization
Resynchronization may be necessary due to the security
method used by this remote keyless entry system. The
transmitter does not send the same signal twice to the
receiver. The receiver will not respond to a signal it has
previously been sent. This prevents someone from
recording and playing back the signal from the transmitter.
To resynchronize the transmitter with the receiver, do
the following:
1. Stand close to your vehicle.
2. Simultaneously press and hold the LOCK and
UNLOCK buttons on the transmitter for about seven
seconds. The door locks should cycle (lock and
unlock) to confirm resynchronization.
If the locks do not cycle, see your dealer for service.

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2-14
Trunk
CAUTION:
It can be dangerous to drive with the trunk open
because carbon monoxide (CO) gas can come into
your vehicle. You can't see or smell CO. It can
cause unconsciousness and even death.
If you must drive with the trunk open or if
electrical wiring or other cable connections
must pass through the seal between the body
and the trunk:

Make sure all other windows are shut.

Turn the fan on your heating or cooling
system to its highest speed with the setting
on VENT. That will force outside air into
your vehicle. See ªComfort Controlsº in
the Index.

If you have air outlets on or under the
instrument panel, open them all the way.
See ªEngine Exhaustº in the Index.
Trunk Lock
To unlock the trunk from the outside, insert the door key
and turn it. You can also press the car symbol on your
remote keyless entry transmitter.
Theft
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft
-deterrent
features, we know that nothing we put on it can make it
impossible to steal. However, there are ways you can help.
Key in the Ignition
If you leave your vehicle with the keys inside, it's an
easy target for joy riders or professional thieves
-- so
don't do it.
When you park your vehicle and open the driver's door,
you'll hear a chime reminding you to remove your key
from the ignition and take it with you. Always do this.
Your steering wheel will be locked, and so will your
ignition and transaxle. And remember to lock the doors.

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2-15 Parking at Night
Park in a lighted spot, close all windows and lock your
vehicle. Remember to keep your valuables out of sight.
Put them in a storage area, or take them with you.
Parking Lots
If you park in a lot where someone will be watching
your vehicle, it's best to lock it up and take your keys.
But what if you have to leave your ignition key?

If possible, park in a busy, well lit area.

Put your valuables in a storage area, like your
trunk or glove box. Be sure to close and lock the
storage area.

Close all windows.

Lock the glove box.

Lock all the doors except the driver's.

Then take the door key and remote keyless entry
transmitter with you.
PASS-Key II
Your vehicle is equipped
with the PASS
-Key II
(Personalized Automotive
Security System)
theft
-deterrent system.
PASS
-Key II is a passive
theft
-deterrent system. It
works when you insert
or remove the key from
the ignition.
PASS
-Key II uses a resistor pellet in the ignition key
that matches a decoder in your vehicle.
When the PASS
-Key II system senses that someone is
using the wrong key, it shuts down the vehicle's starter and
fuel systems. For about three minutes, the starter won't
work and fuel won't go to the engine. If someone tries to
start your vehicle again or uses another key during this
time, the vehicle will not start. This discourages someone
from randomly trying different keys with different resistor
pellets in an attempt to make a match.
The ignition key must be clean and dry before it's inserted
in the ignition or the engine may not start. If the engine
does not start and the SECURITY light is flashing, the key
may be dirty or wet. Turn the ignition off.

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2-40
You can customize the vehicle to activate Delayed
Headlamp Illumination when your vehicle's ignition is
turned off under the conditions described above, or you
may choose not to activate this feature under any
conditions. You can turn the feature on and off when
you perform the following sequence with the doors
closed and the ignition key in RUN:
1. Press and hold the power door lock switch. While
holding the door lock switch, cycle the headlamp
switch on and then off two times.
2. Release the power door lock switch. These steps
must be carried out in a time period of less than
10 seconds, followed by a delay period of no more
than 10 seconds.
3. Then, press and hold the power door unlock switch.
While holding the door unlock switch, turn the headlamp
switch on and then off two times. Release the courtesy
door unlock switch. These operations must be carried out
in a time period of less than 10 seconds.
After releasing the door unlock switch, a single chime
will be heard if the Delayed Headlamp Illumination
function has been disabled; two chimes will be heard if
the feature has been enabled. Disconnecting the
vehicle's battery for up to a year will not change the
programmed operation of this feature.Interior Lamps
Instrument Panel Brightness Control
You can brighten or dim the instrument panel lights by
moving the LIGHTS dial. If you turn the dial past
MAX, your courtesy or interior lamps will come on.
Courtesy Lamps
When any door is opened, several lamps come on. These
lamps are courtesy lamps. They make it easy for you to
enter and leave your vehicle. You can also turn these
lamps on by twisting or turning the interior lights knob
all the way to the right.
Illuminated Entry
Your courtesy lamps will come on and stay on for a set
time whenever you press UNLOCK on the remote
keyless entry transmitter.
If you open a door, the lamps will stay on while it's open
and then turn off automatically about 25 seconds after
you close it. If you press UNLOCK and don't open a
door, the lamps will turn off after about 40 seconds.

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6-61
Fuse Description
24 Stoplamps
26 Parking Lamps
27 Auxiliary Power Connection
(Power Drop)
-- Hot in ACC and Run
28 Crank Signal
-- Body Control Module,
Cluster, Powertrain Control Modules
29 Ignition Signal
-- HVAC Control Head
30 Brake Transmission Shift Interlock (BTSI)
31 Air Bag
32 Body Control Module
33 Hazard Flashers
34 Not UsedFuse Description
36 Ignition Signal
-- Hot in ACC and
Run
-- Body Control Module
38 Low Blower
39 Anti
-Lock Brakes
40 Turn Signals
41 Radio, HVAC Head, Remote Keyless
Entry, Cluster
42 High Blower
43 Not Used
44 Audio Steering Wheel Controls
45 Wipers

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6-62
Underhood Electrical Center -- Passenger's Side
Some fuses and relays are located in the underhood
electrical center on the passenger's side of the
engine compartment.Fuse Description
1 ABS
2 Starter Solenoid
3 Power Seats, Rear Defog
4 High Blower, Hazard Flasher,
Stoplamps, Power Mirror, Door Locks
5 Ignition Switch, BTSI, Stoplamps,
ABS, Turn Signals, Cluster, Air Bag,
DRL Module
6 Cooling Fan
7 Interior Lamps, Retained Accessory
Power, Keyless Entry, Data Link, HVAC
Head, Cluster, Radio, AUX Power
(Power Drop), Cigarette Lighter
8 Ignition Switch, Wipers, Radio, Steering
Wheel Controls, Body Control Module,
AUX Power (Power Drop), Power
Windows, Sunroof, HVAC Controls,
DRL, Rear Defog Relay

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9-2
Automatic Dimming/Heated Outside
Rearview Mirror 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auxiliary Power Connection 2-46 . . . . . . . . . . . . . . . . . . . . . .
Back-up Lamp Bulb Replacement 6-38 . . . . . . . . . . . . . . . . .
Battery 6-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement, Remote Keyless Entry 2-12 . . . . . . . . . . . . . .
Rundown Protection 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 5-3, 5-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BBB Auto Line 8-3, 8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Better Business Bureau Mediation 8-3, 8-4 . . . . . . . . . . . . . . .
Blizzard 4-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake
Adjustment 6
-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI 2-21, 2-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 6-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pedal Travel 6-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing System Parts 6-30 . . . . . . . . . . . . . . . . . . . . . . . .
System Warning Light 2-52 . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaxle Shift Interlock 2-21, 2-28 . . . . . . . . . . . . . . . . . .
Transaxle Shift Interlock (BTSI) Check 7-16 . . . . . . . . . . .
Wear 6-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes, Anti-Lock 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking in Emergencies 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . BTSI 2
-21, 2-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI Check 7-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian Roadside Assistance 8-6 . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications 6-64 . . . . . . . . . . . . . . . . . . . . . .
Carbon Monoxide 2-14, 2-30, 4-27, 4-34 . . . . . . . . . . . . . . .
Cassette
Deck Service 7
-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player 3-15, 3-19, 3-23 . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player Care 3-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tape Player Errors 3-16, 3-20, 3-24 . . . . . . . . . . . . . . . . . .
Center High-Mounted Stoplamp Bulb Replacement 6-35 . . . .
Center Passenger Position 1-26 . . . . . . . . . . . . . . . . . . . . . . . .
Certification Label 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Safety 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Tire 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change Oil Soon Light 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat Tire 5-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System Light 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Your Restraint Systems 1-53 . . . . . . . . . . . . . . . . . .
Chemical Paint Spotting 6-56 . . . . . . . . . . . . . . . . . . . . . . . . . .
Child Restraints 1-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing in a Rear Outside Seat Position 1-43 . . . . . . . . . . .
Securing in the Center Rear Seat Position 1-45 . . . . . . . . . .
Securing in the Right Front Seat Position 1-47 . . . . . . . . . .
Top Strap 1-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Put 1-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-8
Owner Checks and Services 7-14 . . . . . . . . . . . . . . . . . . . . . . .
Owner Publications, Ordering 8-11, 8-12 . . . . . . . . . . . . . . . .
Paint Spotting, Chemical 6-56 . . . . . . . . . . . . . . . . . . . . . . . .
Park
Automatic Transaxle 2
-21 . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting Into 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting Out of 2-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking
At Night 2
-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Mechanism Check 7-17 . . . . . . . . . . . . . . . . . . . . . . .
Lots 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Things That Burn 2-29 . . . . . . . . . . . . . . . . . . . . . . . .
With a Trailer 4-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passenger Compartment Air Filter 6-17 . . . . . . . . . . . . . . . . . .
Passing 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PASS-Key
II 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-18 . . . . . . . . . . . . . . . . . .
Power
Auxiliary Connection 2
-46 . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Locks 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Option Fuses 6-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside Mirrors 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Retained Accessory 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat (Six-Way) 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Fluid 6-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pregnancy, Use of Safety Belts 1-18 . . . . . . . . . . . . . . . . . . . . Problems on the Road 5
-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Publications, Service and Owner 8-11, 8-12 . . . . . . . . . . . . . .
Publications, Service and Owner,
Ordering in Canada 8
-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator, Adding Coolant 5-17 . . . . . . . . . . . . . . . . . . . . . . .
Radiator Pressure Cap 6-21 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio Reception 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radios 3-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rain, Driving In 4-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rainy Weather Tips 4-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Lamps, Rearview Mirror 2-42 . . . . . . . . . . . . . . . . . .
Rear
Door Child Security Locks 2
-6 . . . . . . . . . . . . . . . . . . . . . .
Outside Seat Position 1-28 . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt Comfort Guides 1-31 . . . . . . . . . . . . . . . . . . . . .
Seat Passengers 1-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window Defogger 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Storage Armrest 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rearview Mirror 2-42, 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrochromic Day/Night 2-43 . . . . . . . . . . . . . . . . . . . . . .
Reading Lamps 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reclining Front Seatbacks 1-3 . . . . . . . . . . . . . . . . . . . . . . . . .
Recovery Tank, Coolant 5-14 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recreational Vehicle Towing 4-29 . . . . . . . . . . . . . . . . . . . . . .
Refrigerants, Air Conditioning 6-65 . . . . . . . . . . . . . . . . . . . .
Remote
Activation Illumination 2
-11 . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry Operation 2-9 . . . . . . . . . . . . . . . . . . . . . . . .
Keyless Entry Resynchronization 2-13 . . . . . . . . . . . . . . . .