2004 CADILLAC XLR ECU

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. However, there are ways you
can help.
Theft-Deterrent System
Your vehicle is equipped with a theft-deterrent alarm
system.
With this system, the
security light will ¯ash
when the door is open and
locked with the power
door lock switch.
If this light is on continuously while the engine is
running, your vehicle needs service.
Arming the System
Use one of the two following items listed here to arm
the system:
·Press the lock button on the keyless access
transmitter.
·Open the door. Lock the door with the power door
lock switch. The SECURITY light should ¯ash.
Close the door. The SECURITY light will stop
¯ashing and stay on. After 30 seconds, the light
should turn off.
·The vehicle can be programmed to automatically
lock the doors when you exit the vehicle. See
DIC Vehicle Personalization on page 3-66.
Now, if a door or the trunk lid is opened without the
keyless access transmitter, the alarm will go off. Your
horn will sound for two minutes, then it will go off to save
battery power. And, your vehicle will not start without
a keyless transmitter present.
The theft-deterrent system will not arm if you lock the
driver's door with the power door lock switch after
the doors are closed.
If your passenger stays in the vehicle when you leave
with the keyless access transmitter, have the passenger
lock the vehicle after the doors are closed. This way the
alarm will not arm, and your passenger will not set it off.
2-17

Testing the Alarm
Do the following to test the system:
1. Make sure the trunk lid is latched.
2. Lower the window on the driver's door.
3. Manually arm the system.
4. Close the doors and wait 30 seconds.
5. Reach through the open window and manually pull
the release lever on the ¯oor.
6. Turn off the alarm by pressing the unlock button on
the transmitter.
If the alarm is inoperative, check to see if the horn
works. If not, check the horn fuse. See
Fuses and Circuit
Breakers on page 5-85. If the horn works, but the
alarm does not go off, see your dealer.
Disarming the System
Always use your keyless access transmitter to unlock a
door either by pressing the unlock button on the
transmitter or by squeezing the door handle sensor
while you have the transmitter with you. Unlocking a
door any other way will set off the alarm. If your alarm
sounds, press the unlock button on the keyless
access transmitter to disarm it.
Valet Lockout Switch
The valet lockout switch
is located inside the
glove box.
Press the switch to ON to disable the use of the trunk
and convertible top. The trunk cannot be opened except
by using the key if the valet lockout is on.
Press the switch to OFF to enable the use of the trunk
and convertible top.
Locking the glove box with your key will also help to
secure your vehicle.
2-18

OnStaržSystem
OnStaržuses 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
žuser's guide and the terms and
conditions of the OnStaržSubscription Service
Agreement are included in your vehicle's glove box
literature. For more information, visit www.onstar.com,
contact OnStar
žat 1-888-4-ONSTAR (1-888-466-7827),
or press the blue OnStaržbutton to speak to an
OnStaržadvisor 24 hours a day, 7 days a week.
A completed Subscription Service Agreement is required
prior to delivery of OnStar
žservices and prepaid
calling minutes are also required for OnStaržPersonal
Calling and OnStaržVirtual Advisor use. Terms and
conditions of the Subscription Service Agreement can be
found at www.onstar.com.
OnStaržServices
One of the following plans is normally included for a
speci®c duration with each vehicle equipped with
OnStar
ž. You can upgrade or extend your OnStarž
service plan to meet your needs.
Safe and Sound Plan
·
Automatic Noti®cation of Air Bag Deployment
·Emergency Services
·Roadside Assistance
·Stolen Vehicle Assistance
·AccidentAssist
·Remote Door Unlock
·Remote Diagnostics
·Online Concierge
Directions and Connections Plan
·
All Safe and Sound Plan services
·Route Support
·RideAssist
·Information and Convenience Services
2-35

HomeLinkžTransmitter
HomeLinkž, a combined universal transmitter and
receiver, provides a way to replace up to three
hand-held transmitters used to activate devices such as
gate operators, garage door openers, entry door
locks, security systems and home lighting. Additional
Homelink
žinformation can be found on the internet at
www.homelink.com or by calling 1-800-355-3515.
If your vehicle is equipped with the HomeLink
ž
Transmitter, it complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(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, and (2) this
device must accept any interference, including
interference that may cause undesired operation of the
device.
Changes and modi®cations to this system by other than
an authorized service facility could void authorization
to use this equipment.
Programming the HomeLinkž
Transmitter
Do not use the HomeLinkžTransmitter with any garage
door opener that does not have the ªstop and reverseº
feature. This includes any garage door opener model
manufactured before April 1, 1982. If you have a newer
garage door opener with rolling codes, please be
sure to follow steps 6 through 8 to complete the
programming of your HomeLink
žTransmitter.
Read the instructions completely before attempting to
program the HomeLink
žTransmitter. Because of
the steps involved, it may be helpful to have another
person available to assist you in programming the
transmitter.
2-37

Keep the original transmitter for use in other vehicles as
well as for future HomeLinkžprogramming. It is also
recommended that upon the sale of the vehicle,
the programmed HomeLink
žbuttons should be erased
for security purposes. Refer to ªErasing HomeLinkž
Buttonsº or, for assistance, contact HomeLinkžon the
internet at: www.homelink.com or by calling
1-800-355-3515.
Be sure that people and objects are clear of the garage
door or gate operator you are programming. When
programming a garage door, it is advised to park outside
of the garage.
It is recommended that a new battery be installed in
your hand-held transmitter for quicker and more
accurate transmission of the radio frequency.
Your vehicle's engine should be turned off while
programming the transmitter. Follow these steps to
program up to three channels:
1. Press and hold down the two outside buttons,
releasing only when the indicator light begins to
¯ash, after 20 seconds. Do not hold down the
buttons for longer than 30 seconds and do not
repeat this step to program a second and/or third
transmitter to the remaining two HomeLink
žbuttons.
2. Position the end of your hand-held transmitter about
1 to 3 inches (3 to 8 cm) away from the HomeLink
ž
buttons while keeping the indicator light in view.3. Simultaneously press and hold both the desired
button on HomeLink
žand the hand-held transmitter
button. Do not release the buttons until Step 4
has been completed.
Some entry gates and garage door openers may
require you to substitute Step 3 with the procedure
noted in ªGate Operator and Canadian
Programmingº later in this section.
4. The indicator light will ¯ash slowly at ®rst and then
rapidly after HomeLink
žsuccessfully receives the
frequency signal from the hand-held transmitter.
Release both buttons.
5. Press and hold the newly-trained HomeLink
žbutton
and observe the indicator light.
If the indicator light stays on constantly,
programming is complete and your device should
activate when the HomeLink
žbutton is pressed and
released.
To program the remaining two HomeLink
žbuttons,
begin with Step 2 under ªProgramming HomeLinkž.º
Do not repeat Step 1 as this will erase all of the
programmed channels.
If the indicator light blinks rapidly for two seconds
and then turns to a constant light, continue with
Steps 6 through 8 following to complete the
programming of a rolling-code equipped device
(most commonly, a garage door opener).
2-38

Rear Storage Area
There is a cargo cover located in the trunk to keep
cargo from getting in the way of the retractable hardtop.
The cargo cover must be in place for the top to move.
To install the cargo cover, snap the bottom of the cover
onto the snaps (B) located on the ¯oor of the trunk.Then, swing the cover up and place the pins on each
side of the cover into the notches (A) on either side
of the trunk.
There is also a storage compartment located in the
trunk on the passenger's side.
To access the storage compartment, unsnap the lid. To
reinstall the lid, line up the opening in the lid over the
snap and push down into place.
Convenience Net
Your vehicle is equipped with a convenience net. The
net attaches to the ¯oor of the trunk. Put small
loads, like grocery bags, behind the net. It can help
keep them from falling over during sharp turns or quick
starts and stops.
The net is not for larger, heavier loads. Store them in
the trunk as far forward as you can. When not using
the net, hook the net to the tabs securing it to the
sill plate.
2-43

Instrument Panel Overview...............................3-2
Hazard Warning Flashers................................3-4
Other Warning Devices...................................3-4
Horn.............................................................3-5
Power Tilt Wheel and Telescopic Steering
Column......................................................3-5
Turn Signal/Multifunction Lever.........................3-5
Exterior Lamps.............................................3-22
Interior Lamps..............................................3-25
Head-Up Display (HUD).................................3-27
Ultrasonic Rear Parking Assist (URPA)............3-30
Accessory Power Outlets...............................3-32
Ashtrays and Cigarette Lighter........................3-33
Climate Controls............................................3-33
Dual Climate Control System..........................3-33
Outlet Adjustment.........................................3-38
Passenger Compartment Air Filter...................3-38
Warning Lights, Gages, and Indicators............3-39
Instrument Panel Cluster................................3-40
Speedometer and Odometer...........................3-41
Trip Odometer..............................................3-41
Tachometer.................................................3-41
Safety Belt Reminder Light.............................3-41
Air Bag Readiness Light................................3-42
Air Bag Off Light..........................................3-43
Voltmeter Gage............................................3-44
Brake System Warning Light..........................3-45
Anti-Lock Brake System Warning Light.............3-46Traction Control System (TCS) Warning Light . . .3-46
Engine Coolant Temperature Gage..................3-47
Tire Pressure Light.......................................3-48
Malfunction Indicator Lamp.............................3-48
Engine Oil Pressure Gage.............................3-52
Security Light...............................................3-52
Fog Lamp Light............................................3-53
Lights On Reminder......................................3-53
Fuel Gage...................................................3-54
Driver Information Center (DIC).......................3-55
DIC Controls and Displays.............................3-55
DIC Warnings and Messages.........................3-57
Other Messages...........................................3-65
DIC Vehicle Personalization............................3-66
Trip Computer................................................3-70
Oil Life Indicator...........................................3-70
Audio System(s).............................................3-70
Navigation/Radio System...............................3-71
Theft-Deterrent Feature..................................3-71
Audio Steering Wheel Controls.......................3-71
Radio Reception...........................................3-72
Care of Your CDs.........................................3-72
Care of Your CD Player................................3-72
Diversity Antenna System..............................3-73
XMŸ Satellite Radio Antenna System.............3-73
Section 3 Instrument Panel
3-1

{CAUTION:
If the air bag readiness light ever comes on
when you have turned off the air bags, it
means that something may be wrong with the
air bag system. The passenger's air bags
could in¯ate even though the switch is off. If
this ever happens, do not let anyone whom the
national government has identi®ed as a
member of a passenger air bag risk group sit
in the passenger's position (for example, do
not secure a rear-facing child restraint in your
vehicle) until you have your vehicle serviced.
See
Air Bag Off Switch on page 1-44.
Voltmeter Gage
When the vehicle is in
accessory mode, the
voltmeter shows the
voltage output of your
battery. When the engine
is running, it shows
the voltage output of the
charging system.
The reading will change as the rate of charge changes
(with engine speed, for example), but if the voltmeter
reads at 9 volts or below, your instrument panel cluster
and other systems may shut down. The Driver
Information Center (DIC) will read LOW VOLTAGE
when your vehicle is at 10 volts or below. Have
it checked right away. Driving with the voltmeter reading
at 10 volts or below could drain your battery and
disable your vehicle.
3-44