2008 CADILLAC CTS immobilizer

Keys...............................................................2-4
Remote Keyless Entry (RKE) System................2-6
Remote Keyless Entry (RKE) System
Operation...................................................2-7
Keyless Access System...................................2-9
Keyless Access System Operation..................2-10
Remote Vehicle Start....................................2-16
Doors and Locks............................................2-18
Door Locks..................................................2-18
Central Door Unlocking System......................2-19
Power Door Locks........................................2-19
Delayed Locking...........................................2-19
Programmable Automatic Door Locks..............2-20
Rear Door Security Locks..............................2-20
Lockout Protection........................................2-21
Trunk..........................................................2-21
Windows........................................................2-24
Power Windows............................................2-25
Sun Visors...................................................2-27
Theft-Deterrent Systems..................................2-28
Theft-Deterrent System..................................2-28
Immobilizer..................................................2-29
Immobilizer Operation (Key Access)................2-30
Immobilizer Operation (Keyless Access)...........2-31Starting and Operating Your Vehicle................2-32
New Vehicle Break-In....................................2-32
Ignition Positions (Key Access).......................2-32
Ignition Positions (Keyless Access)..................2-34
Retained Accessory Power (RAP)...................2-35
Starting the Engine.......................................2-35
Engine Coolant Heater..................................2-37
Automatic Transmission Operation...................2-38
Manual Transmission Operation......................2-42
Parking Brake..............................................2-44
Shifting Into Park (Automatic Transmission)
......2-45
Shifting Out of Park......................................2-47
Parking the Vehicle (Manual Transmission).......2-47
Parking Over Things That Burn.......................2-48
Engine Exhaust............................................2-48
Running the Vehicle While Parked..................2-49
Mirrors...........................................................2-50
Automatic Dimming Rearview Mirror
with OnStar
®............................................2-50
Outside Power Mirrors...................................2-50
Park Tilt Mirrors............................................2-51
Outside Convex Mirror...................................2-51
Outside Heated Mirrors..................................2-51
Section 2 Features and Controls
2-1

7. Once the transmitter is programmed, a beep will
sound. The DIC will display Ready To Learn
Electronic Key #X, where X can be 3 or 4, or
Maximum # Electronic Keys Learned.
8. Press the ignition control knob to exit
programming mode.
9. Remove the transmitter from the transmitter pocket
and press the unlock button on the keyless access
transmitter two times.
The Canadian immobilizer standard requires Canadian
owners to see their dealer/retailer for matching new
transmitters when two recognized transmitters are not
available. United States owners are permitted to match
a new transmitter to their vehicle when a recognized
transmitter is not available.The procedure will require three, ten minute cycles to
complete the matching process.
1. The vehicle must be off.
2. Place the new,
unrecognized
transmitter into the
transmitter pocket with
the transmitter buttons
facing the front of the
vehicle. The transmitter
pocket is inside the
center console storage
area located between
the driver and front
passenger seats.
3. Insert the vehicle key into the key lock cylinder
located on the driver’s door.
2-13

Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, lower the driver’s window
and open the driver’s door.
2. Activate the system by locking the doors with the
transmitter.
3. Get out of the vehicle, close the door and wait for
the security light to go out.
4. Then reach in through the window, unlock the door
with the manual door lock and open the door.
This should set off the alarm.
While the alarm is set, the power door unlock switch will
not work.
If the alarm does not sound when it should but the
headlamps ash, check to see if the horn works.
The horn fuse may be blown. To replace the fuse,
seeFuses and Circuit Breakers on page 5-123
Fuses and Circuit Breakers.
If the alarm does not sound or the headlamps do
not ash, the vehicle should be serviced by your
dealer/retailer.
Immobilizer
This device complies with Part 15 of the FCC Rules.
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.
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.
2-29

Immobilizer Operation (Key Access)
Your vehicle has a passive theft-deterrent system.
The system is automatically armed when the key
is removed from the ignition.
The theft-deterrent system is disarmed when the key is
turned to ON/RUN.
You do not have to manually arm or disarm the system.
The security light will come on if there is a problem
with arming or disarming the theft-deterrent system.
The key uses a transponder that matches an immobilizer
control unit in your vehicle and automatically disarms
the system. Only the correct key will start the vehicle.
If the key is ever damaged, you may not be able to start
your vehicle.
When trying to start the vehicle, if the engine does not
start and the security light comes on, there may be
a problem with your theft-deterrent system. Turn
the ignition off and try 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 5-123. 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/retailer who can service the
theft-deterrent system and have a new key made.It is possible for the theft-deterrent system decoder to
learn the transponder value of a new or replacement
key. Up to 10 keys can be programmed for the vehicle.
The following procedure is for programming additional
keys only.
To program a new key do the following:
1. Verify that the new key has
1stamped on it.
2. Insert the current driver’s key in the ignition and
start the engine. If the engine will not start see
your dealer/retailer for service.
3. After the engine has started, turn the key to
LOCK/OFF, and remove the key.
4. Insert the key to be programmed and turn it to
ON/RUN within ve seconds of the ignition being
turned to LOCK/OFF in Step 3.
5. The security light will turn off once the key has
been programmed. It may not be apparent that
the security light went on due to how quickly the
key is programmed.
6. Repeat the Steps 1 through 4 if additional keys are
to be programmed.
In an emergency, contact Cadillac Roadside Service.
SeeRoadside Service on page 7-7.
Do not leave the key or device that disarms or
deactivates the theft deterrent system in the vehicle.
2-30

Immobilizer Operation
(Keyless Access)
Your vehicle has a passive theft-deterrent system.
The system is automatically armed when the ignition
control knob is turned to LOCK/OFF.
The immobilization system is disarmed when the ignition
control knob is pushed in and a valid transmitter is
found in the vehicle.
You do not have to manually arm or disarm the system.
The security light will come on if there is a problem
with arming or disarming the theft-deterrent system.
The system has one or more keyless access
transmitters that are matched to an immobilizer control
unit in your vehicle. Only a correctly matched keyless
access transmitter will start the vehicle. If the keyless
access transmitter is ever damaged, you may not
be able to start your vehicle.
When trying to start the vehicle, if the engine does not
start and the security light comes on, there may be
a problem with your immobilizer system. Turn the
ignition control knob off and try again.If the ignition control knob does not rotate, and the
keyless access transmitter appears to be undamaged,
try another keyless access transmitter. Or, you may try
placing the transmitter in the transmitter pocket located in
the center console. See “Electronic Key Not Detected”
underDIC Warnings and Messages on page 3-56. At this
time, you may also want to check the fuse. SeeFuses
and Circuit Breakers on page 5-123. If the ignition control
knob still does not rotate with the other transmitter, your
vehicle needs service. If the ignition control knob does
rotate, the rst transmitter may be faulty. See your
dealer/retailer who can service the theft-deterrent system
and have a new keyless access transmitter programmed
to the vehicle.
It is possible for the immobilizer system to learn new or
replacement keyless access transmitters. Up to 4 keyless
access transmitters can be programmed for the vehicle.
To program additional transmitters, see “Matching
transmitter(s) to Your Vehicle” underKeyless Access
System Operation on page 2-10.
Do not leave the key or device that disarms or
deactivates the theft deterrent system in the vehicle.
2-31

Service StabiliTrak
This message displays if there has been a
problem detected with the StabiliTrak®system.
The TCS/StabiliTrak warning light on the instrument
panel cluster also comes on.
If this message comes on while you are driving, pull off
the road as soon as possible and stop carefully. Try
resetting the system by turning the ignition off then back
on. If this message still stays on or comes back on
again while you are driving, your vehicle needs service.
Have the StabiliTrak system inspected by your
dealer/retailer as soon as possible. SeeStabiliTrak
®
System on page 4-8for more information.
Service Theft Deterrent System
This message displays when there is a problem with the
theft-deterrent system programmed in the key. A fault
has been detected in the system which means that
the system is disabled and it is not protecting the
vehicle. The vehicle usually restarts; however, you may
want to take the vehicle to your dealer/retailer before
turning off the engine. SeeImmobilizer Operation
(Key Access) on page 2-30orImmobilizer Operation
(Keyless Access) on page 2-31for more information.
Service Tire Monitor System
This message displays if a part on the Tire Pressure
Monitor System (TPMS) is not working properly. The tire
pressure light also ashes and then remains on during
the same ignition cycle. SeeTire Pressure Light on
page 3-41. Several conditions may cause this message
to appear. SeeTire Pressure Monitor Operation on
page 5-70for more information. If the warning comes on
and stays on, there may be a problem with the TPMS.
See your dealer/retailer.
Service Traction Control
This message displays when there is a problem with
the Traction Control System (TCS). The TCS/StabiliTrak
warning light on the instrument panel cluster also comes
on. When this message displays, the system will not limit
wheel spin. Adjust your driving accordingly. See your
dealer/retailer for service. SeeTraction Control System
(TCS) on page 4-6for more information.
Service Transmission
This message displays when there is a problem with the
vehicle’s transmission. Have your vehicle serviced by
your dealer/retailer.
3-66

I
Ignition Positions....................................2-32, 2-34
Immobilizer....................................................2-29
Immobilizer Operation..............................2-30, 2-31
Infants and Young Children, Restraints...............1-35
Ination - Tire Pressure...................................5-66
Inator Kit, Tire.......................................5-84, 5-93
Instrument Panel
Brightness..................................................3-20
Cluster.......................................................3-31
Overview..................................................... 3-4
Storage Area..............................................2-63
J
Jump Starting.................................................5-45
K
Keyless Access System..................................... 2-9
Keyless Access System, Operation....................2-10
Keyless Entry System....................................... 2-6
Keys............................................................... 2-4
L
Labeling, Tire Sidewall.....................................5-60
Lamps
Exterior Lighting Battery Saver......................3-20
Reading.....................................................3-21
Lap-Shoulder Belt...........................................1-26
LATCH System
Child Restraints...........................................1-43
License Plate Lamps.......................................5-56
Light
Airbag Readiness........................................3-34
Anti-lock Brake System (ABS) Warning...........3-39
Brake System Warning.................................3-38
Charging System.........................................3-37
Cruise Control.............................................3-46
Engine Coolant Temperature Warning.............3-40
Fog Lamp ..................................................3-46
Highbeam On.............................................3-47
Lights On Reminder.....................................3-46
Malfunction Indicator....................................3-41
Oil Pressure...............................................3-44
Passenger Airbag Status Indicator..................3-35
Safety Belt Reminders..................................3-33
Security.....................................................3-46
Tire Pressure..............................................3-41
Traction Control System (TCS)/StabiliTrak
®......3-39
Up-Shift.....................................................3-37
7

Storage Areas
Center Console Storage Area........................2-63
Convenience Net.........................................2-63
Cupholders.................................................2-62
Glove Box..................................................2-62
Instrument Panel Storage Area......................2-63
Stuck in Sand, Mud, Ice, or Snow.....................4-21
Sun Visors.....................................................2-27
Sunroof.........................................................2-63
T
Tachometer....................................................3-32
Telescopic Steering Column, Power Tilt Wheel...... 3-7
Telescopic Wheel.............................................. 3-6
Theft-Deterrent, Radio....................................3-124
Theft-Deterrent System....................................2-28
Theft-Deterrent Systems...................................2-28
Immobilizer.................................................2-29
Immobilizer Operation..........................2-30, 2-31
Tilt Wheel........................................................ 3-6
Tire
Pressure Light.............................................3-41
Tires.............................................................5-58
Aluminum or Chrome-Plated Wheels,
Cleaning...............................................5-118
Buying New Tires........................................5-76Tires (cont.)
Chains.......................................................5-82
Changing a Flat Tire..................................5-102
Cleaning...................................................5-118
Compact Spare Tire...................................5-111
Different Size..............................................5-78
High-Speed Operation..................................5-68
If a Tire Goes Flat.......................................5-82
Ination - Tire Pressure................................5-66
Inspection and Rotation................................5-74
Installing the Spare Tire..............................5-105
Pressure Monitor Operation...........................5-70
Pressure Monitor System..............................5-69
Removing the Flat Tire...............................5-105
Removing the Spare Tire and Tools..............5-104
Storing a Flat or Spare Tire and Tools..........5-110
Tire Sealant and Compressor Kit...........5-84, 5-93
Tire Sidewall Labeling..................................5-60
Tire Terminology and Denitions....................5-63
Uniform Tire Quality Grading.........................5-78
Wheel Alignment and Tire Balance.................5-80
Wheel Replacement.....................................
5-80
When It Is Time for New Tires......................5-75
Winter Tires................................................5-60
Towing
Recreational Vehicle.....................................4-28
Towing a Trailer..........................................4-30
Your Vehicle...............................................4-28
12