2005 BUICK RANDEZVOUS ECU

Keys...............................................................2-3
Remote Keyless Entry System.........................2-5
Remote Keyless Entry System Operation...........2-6
Doors and Locks.............................................2-8
Door Locks....................................................2-8
Power Door Locks..........................................2-9
Delayed Locking.............................................2-9
Programmable Automatic Door Locks..............2-10
Rear Door Security Locks..............................2-10
Lockout Protection........................................2-11
Liftgate........................................................2-11
Windows........................................................2-13
Power Windows............................................2-14
Sun Visors...................................................2-15
Theft-Deterrent Systems..................................2-15
Content Theft-Deterrent.................................2-15
PASS-Key
®III ..............................................2-17
PASS-Key®III Operation...............................2-18
Starting and Operating Your Vehicle................2-19
New Vehicle Break-In....................................2-19
Ignition Positions..........................................2-20
Retained Accessory Power (RAP)...................2-21
Starting Your Engine.....................................2-21
Engine Coolant Heater..................................2-22Automatic Transaxle Operation.......................2-23
All-Wheel Drive............................................2-26
Parking Brake..............................................2-26
Shifting Into Park (P).....................................2-27
Shifting Out of Park (P).................................2-28
Parking Over Things That Burn.......................2-29
Engine Exhaust............................................2-29
Running Your Engine While You Are Parked.......2-30
Mirrors...........................................................2-31
Manual Rearview Mirror.................................2-31
Outside Power Mirror....................................2-31
Outside Curb View Assist Mirror.....................2-32
Outside Convex Mirror...................................2-32
Outside Heated Mirrors..................................2-32
OnStar
®System.............................................2-33
HomeLink®Transmitter...................................2-34
Programming the HomeLink®Transmitter.........2-35
Storage Areas................................................2-38
Glove Box...................................................2-38
Cupholder(s)................................................2-39
Cell Phone Storage Area...............................2-39
Overhead Console........................................2-39
Floor Console Storage Area...........................2-39
Section 2 Features and Controls
2-1

Programmable Automatic Door
Locks
All of the doors will automatically lock when all doors
are closed, the engine is running and the shift lever
is shifted out of PARK (P). All of the doors will
automatically unlock when the shift lever is shifted into
PARK (P).
With the automatic door lock feature, you can still lock
or unlock the doors at any time, either manually, with the
power door lock switches or by pressing LOCK on the
remote keyless entry transmitter. SeeRemote Keyless
Entry System Operation on page 2-6for more
information.
If your vehicle is equipped with the Driver Information
Center (DIC), seeDIC Vehicle Personalization on
page 3-66to program the automatic door lock feature.
Rear Door Security Locks
Your vehicle is equipped with rear door security locks
that help prevent passengers from opening the rear
doors on your vehicle from the inside. To use one
of these locks do the following:
1. Open one of the rear doors.2. On the inside of the rear
door will be a lock.
Push the lever up to
engage the safety lock.
3. Close the door.
4. Repeat Steps 1 through 3 for the other rear
door lock.
The rear doors on your vehicle cannot be opened from
inside the vehicle when this feature is in use. If you
want to open the rear door when the security lock is on,
unlock the door from the inside and then open the
door from the outside.
2-10

Canceling the Rear Door Security
Locks
1. Unlock and open the rear door from the outside.
2. Push the lever down to disengage the safety lock.
3. Close the door.
4. Repeat Steps 1 through 3 for the other rear
door lock.
The rear door locks will now work normally.
Lockout Protection
The lockout protection feature may prevent you from
locking your key in your vehicle. Pressing the power
door lock switch will lock all doors, then unlock
the driver’s door, if the key is in the ignition when a door
is opened.
If you leave the key in your vehicle but not in the
ignition or if you use the manual door lock, you could
still lock the key in the vehicle. Always remember to take
the key with you.
Liftgate
{CAUTION:
It can be dangerous to drive with the liftgate
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 liftgate open
or if electrical wiring or other cable
connections must pass through the seal
between the body and the liftgate:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. SeeClimate Control
System on page 3-28.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-29.
2-11

Window Lock Out
The driver’s window controls also include a lock-out
switch. Press the right side of the WDO LOCK switch to
stop rear passengers from lowering their window.
The driver can still control all of the windows with the
lock on. Press the other side of the WDO LOCK switch
for normal window operation.
Sun Visors
To block out glare you can swing down the visors. You
can also remove them from the center mount and
swing them to the side. There may be an extension on
the inboard side of the sun visors. Pull the extension
out to block out glare.
Visor Vanity Mirror
Pull down the sun visor. Flip up the cover to expose the
vanity mirror.
Lighted Visor Vanity Mirrors
Pull down the sun visor. Flip up the cover to expose the
vanity mirror. The lamps will come on when you open
the cover.
Theft-Deterrent Systems
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.
Content Theft-Deterrent
Your vehicle may have a theft-deterrent alarm system.
A security light, located on
top of the instrument panel
will ash slowly to let
you know that the system
has been armed.
While armed, the doors will not unlock with the power
door lock switch.
2-15

Once armed, the alarm will go off if someone tries to
enter the vehicle without using the optional remote
keyless entry transmitter or the key, or tries to turn the
ignition on without using the correct key. The horn
will sound and the headlamps and parking lamps will
ash any time the alarm sounds.
When the content theft-deterrent system is armed, the
liftgate may be opened by pressing the REAR button on
the remote keyless entry transmitter. The alarm will
go into standby mode. Once the liftgate is closed, the
alarm will be armed. See “Liftgate Release” under
Liftgate on page 2-11for more information on how to
open the liftgate.
Arming with the Power Lock Switch
The content theft-deterrent alarm system will arm when
you use either power door lock switch to lock the doors
while any door or the liftgate is open and the key is
removed from the ignition. The security light, located on
top of the instrument panel, will start ashing when the
system is armed.
Within ve seconds, after the security light begins to
ash, any door can be manually unlocked and opened,
without sounding the alarm. A door unlocked manually
will remain unlocked until locked again.
Arming with the Remote Keyless Entry
Transmitter
Your alarm system will arm when you press LOCK once
on your remote keyless entry transmitter to lock the
doors. The alarm system light will come on for
30 seconds and then start ashing to let you know the
system is armed.
Within the 30 second delay after the security light
comes on, and an additional ve seconds after the light
begins to ash, any door can be manually unlocked
and opened, without sounding the alarm.
If LOCK is pressed on your remote keyless entry
transmitter twice within ve seconds, any door can be
manually unlocked and opened within ve seconds after
the security light begins to ash, without sounding the
alarm. A door unlocked manually will remain unlocked
until locked again.
2-16

Disarming with Your Key
Your alarm system will disarm when you use your key
to unlock the driver’s door. The security light will
stop ashing to let you know the system is no longer
armed.
Disarming with the Remote Keyless
Entry Transmitter
Your alarm system will disarm when you press UNLOCK
on your remote keyless entry transmitter to unlock the
doors. The security light, on top of the instrument panel,
will stop ashing to let you know the system is no
longer armed.
PASS-Key®III
Your PASS-Key®III system operates on a radio
frequency subject to Federal Communications
Commission (FCC) Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
PASS-Key
®III uses a radio frequency transponder in
the key that matches a decoder in your vehicle.
2-17

PASS-Key®III Operation
Your vehicle is equipped
with the PASS-Key®III
(Personalized Automotive
Security System)
theft-deterrent system.
PASS-Key
®III is a passive
theft deterrent system.
This means you don’t have
to do anything different
to arm or disarm the
system. It works when you
insert or remove the key
from the ignition.
When the PASS-Key
®III system senses that someone
is using the wrong key, it shuts down the vehicle’s
starter and fuel systems. The starter will not work and
fuel will stop being delivered to the engine. Anyone
using a trial-and-error method to start the vehicle will be
discouraged because of the high number of electrical
key codes.
If the SECURITY message is shown on the Message
Center when trying to start the vehicle, the key may
have a damaged transponder. SeePASS-Key
®
III Security Message on page 3-57. Turn the ignition off
and try to start the vehicle again.If the engine still does not start, and the key appears to be
undamaged, try another ignition key. At this time, you
may also want to check the fuse. SeeFuses and Circuit
Breakers on page 5-105. If the engine still does not start
with the other key, your vehicle needs service. If your
vehicle does start, the rst key may be faulty. See your
dealer who can service the PASS-Key
®III to have a new
key made.
It is possible for the PASS-Key
®III decoder to program
the transponder value of a new or replacement key. Up to
10 additional keys may be programmed for the vehicle.
This procedure is for programming additional keys only. If
all the currently programmed keys are lost or do not
operate, you must see your dealer or a locksmith who can
service PASS-Key
®III to have keys made and
programmed to the system.
See your dealer who can service PASS-Key
®III to get a
new key blank that is a cut exactly as the ignition key
that operates the system.
Canadian Owners:If you lose or damage your keys,
only a GM dealer can service PASS-Key
®III to
have new keys made. To program additional keys you
will need two current driver’s keys (black in color).
You must add a step to the following procedure. After
Step 3 repeat Steps 1 through 3 with the second current
driver’s key. Then continue with Step 4.
2-18

To program the new PK3®key do the following:
1. Verify the new key has PK3
®stamped on it.
2. Insert the original key in the ignition and start the
engine. If the engine will not start, see your dealer
for service.
3. After the engine has started, turn the key to OFF,
and remove the key.
4. Insert the key to be programmed and turn it to ON
within 10 seconds of removing the previous key.
5. The SECURITY message will turn off once the key
has been programmed. It may not be apparent that
the SECURITY message went on due to how
quickly the key is programmed.
6. Repeat Steps 1 through 4 if additional keys are to
be programmed.
If you are ever driving and the SECURITY message
comes on and stays on, you will be able to restart your
engine if you turn it off. Your PASS-Key
®III system,
however, is not working properly and must be serviced
by your dealer. Your vehicle is not protected by the
PASS-Key
®III system at this time.
If you lose or damage a PASS-Key
®III key, see your
dealer who can service PASS-Key®III to have a
new key made.
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
If you have all-wheel drive, keep your speed
at 55 mph (88 km/h) or less for the rst
500 miles (805 km).
Do not drive at any one speed — fast or
slow — for the rst 500 miles (805 km). Do not
make full-throttle starts.
Avoid making hard stops for the rst
200 miles (322 km) or so. During this time your
new brake linings are not yet broken in. Hard
stops with new linings can mean premature wear
and earlier replacement. Follow this breaking-in
guideline every time you get new brake linings.
Do not tow a trailer during break-in. SeeTowing a
Trailer on page 4-38for more information.
2-19