immobilizer CADILLAC CTS 2003 1.G Owners Manual

2-
2-1
Section 2 Features and Controls
Here you can learn about the many standard and optional features on your vehicle, and information on starting,
shifting and braking. Also explained are the instrument panel and the warning systems that tell you if everything is
working properly
-- and what to do if you have a problem.
2
-2 Windows
2
-5 Keys
2
-7 Door Locks
2
-10 Remote Keyless Entry System
2
-16 Trunk Lid
2
-19 Theft
2
-21 Immobilizer
2
-24 New Vehicle ªBreak-Inº
2
-24 Ignition Positions
2
-27 Starting Your Engine
2
-28 Engine Coolant Heater (If Equipped)
2
-30 Automatic Transmission Operation
2
-37 Manual Transmission Operation
2
-38 Parking Brake
2
-40 Shifting Into PARK (P)
(Automatic Transmission Only)
2
-42 Shifting Out of PARK (P)
(Automatic Transmission Only)
2
-42 Parking Your Vehicle
(Manual Transmission Only)2
-43 Parking Over Things That Burn
2
-44 Engine Exhaust
2
-44 Running Your Engine While You're Parked
(Automatic Transmission)
2
-46 Turn Signal/Multifunction Lever
2
-56 Exterior Lamps
2
-59 Interior Lamps
2
-60 Mirrors
2
-70 OnStar
System (If Equipped)
2
-74 Sunroof (Option)
2
-75 HomeLink
Transmitter (If Equipped)
2
-80 The Instrument Panel -- Your
Information System
2
-85 Warning Lights, Gages and Indicators
2
-99 Driver Information Center (DIC)
2
-130 Vehicle Programming and
Personalization Features
2
-153 Navigation (Option)

2-6
One key works all
of the lock cylinders
on the vehicle.
Your vehicle has an Immobilizer vehicle theft system.
The key has a transponder in the key head that matches
a decoder in the vehicle's steering column. If a
replacement key or any additional key is needed, you
must purchase it from your dealer. The key will have
PK3+ stamped on it. Keep the bar code tag that came
with the original keys. Give this tag to your dealer if you
need a new key made.
NOTICE:
Your vehicle has a number of new features that
can help prevent theft. You can have a lot of
trouble getting into your vehicle if you ever
lock your keys inside. You may even have to
damage your vehicle to get in. So be sure you
have extra keys.
In an emergency, contact Cadillac Roadside Assistance.
See ªRoadside Assistanceº in the Index.
If your vehicle is equipped with the OnStar system with
an active subscription and you lock your keys inside the
vehicle, OnStar may be able to send a command to
unlock your vehicle. See ªOnStarº in the Index for more
information.

2-21
Testing the Alarm
1. From inside the vehicle, roll down the window, then
get out of the vehicle, keeping the door open.
2. From outside of the vehicle, with the door open, lock
the vehicle using the power door lock switch or the
remote keyless entry transmitter and close the door.
Wait approximately 30 seconds until the security
light goes off.
3. Reach in and unlock the door using the manual lock
and open the door. The horn will sound and the
exterior lamps will flash.
You can turn off the alarm by unlocking the driver's
door with your key, using the unlock button on the
remote keyless entry transmitter or by starting the car
with a valid key.
If the alarm does not sound when it should, check to see
if the horn works. The horn fuse may be blown. To
replace the fuse, see ªFuses and Circuit Breakersº in the
Index. If the fuse does not need to be replaced, you may
need to have your vehicle serviced.
To reduce the possibility of theft, always arm the
theft
-deterrent system when leaving your vehicle.
Immobilizer
Your vehicle is equipped
with a passive
theft
-deterrent system.
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, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.

2-22
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 received, including
interference that may cause undesired operation of
the device.
Changes or modifications to this system by other than an
authorized service facility could void authorization to
use this equipment.
The system works when you turn the key to ON (II).
The key uses a transponder that matches an immobilizer
control unit in your vehicle. The correct key will start
the vehicle.
Your vehicle has a special key that works with the
theft
-deterrent system. There is a transponder in the key
head. 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, the key may
have a damaged transponder. 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. See ªFuses and
Circuit Breakersº in the Index. If the engine still does
not start with the other key, your vehicle needs service.
If your vehicle does start, the first key may be faulty.
See your dealer who can service the theft
-deterrent
system to 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 additional keys may be programmed for
the vehicle. This procedure is for learning additional
keys only.

2-121
Service Suspension System
This symbol appears with
the Service Suspension
System message.
This message is displayed to indicate that the suspension
system is not operating properly. Have your vehicle
serviced at your dealership.Service Theft SystemThis symbol appears
with the Service Theft
System message.
This message means there is a problem with the
Immobilizer. A fault has been detected in the system
which means that the system is disabled and is not
protecting the vehicle. The vehicle usually restarts,
however, you may want to take your vehicle to your
dealer before turning off the engine.