1999 CADILLAC SEVILLE ECU

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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.
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 doors except the driver's.

Give the valet key to the valet. Then take the master
key with you.
Theft-Deterrent System
If the ignition is off and any
door is open, the
SECURITY light will flash,
reminding you to arm
the system.

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To arm the system, do the following:
1. Open the door.
2. Lock the door using the power door lock switch with
the door open or the Remote Keyless Entry (RKE)
system. The SECURITY light should come on and
stay on.
3. Close all the doors. The SECURITY light should go
off within approximately 30 seconds.
When the theft system activates, the horn will sound and
the lamps will flash for about 30 seconds when the door
or trunk is opened without the key or RKE system.
Remember, the theft
-deterrent system won't arm if you
lock the doors with a key or use the manual door lock. It
activates only if you use a power door lock with the
door open or the RKE system.
To avoid activating the alarm by accident:

The vehicle should be locked with the door key or
the manual door lock after the doors are closed if
you don't want to arm the theft
-deterrent system.

Always unlock a door with a key or use the RKE
system. (Pressing the unlock button on the RKE
transmitter disables the theft
-deterrent system.)
Unlocking a door any other way will activate the
alarm when a door or the trunk is opened.If you activate the alarm by accident, unlock the driver's
door with your key. You can also turn off the alarm by
using the unlock button on the RKE system, or by
starting the car with a valid key.
Changes or modifications made to this system by other
than an authorized service facility could void
authorization to use the theft system.
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 or the RKE
system and close the door. Wait 30 seconds until the
SECURITY lamp goes off.
3. Reach in and unlock the door using the manual lock
and open the door. The horn will sound and the
hazard lights will flash.
You can turn off the alarm by unlocking the driver's
door with your key, using the unlock button on the RKE
transmitter or by starting the car with a valid key.

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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.
Valet Lock
This switch is located inside the glove box on the
left
-hand side. Pressing this switch to ON will disable
the use of the trunk, fuel door and garage door opener.
Pressing this switch to
OFF will make these
features reusable.
Locking the glove box with your key will also help to
secure your vehicle. Note that the RKE transmitter can't
open the trunk or fuel door if the valet lock switch is in
the ON position.
PASS-Key
III
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.
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, and
(2) this device must accept any interference received,
including interference that may cause
undesired operation.

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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.
PASS
-Key III uses a radio frequency transponder in the
key that matches a decoder in your vehicle.
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 when trying to start the vehicle, the engine does not
start and the STARTING DISABLED REMOVE KEY
message is displayed in the Driver Information Center,
your key should be checked for damage. 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 or a locksmith who can service the
PASS
-Key III to have a new key made.
If you are ever driving and the SERVICE THEFT
SYSTEM message is displayed in the Driver
Information Center or the SECURITY light comes on
and stays on, you will be able to restart your engine if
you turn it off. Your vehicle is not protected by the
PASS
-Key
III system at this time. Your PASS-Key III
system is not working properly and must be serviced by
your dealer.
If you lose or damage a PASS
-Key III key, see your
dealer or a locksmith who can service PASS
-Key III to
have a new key made.

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2-54 Center Console Storage
The center console comes with a storage tray, a storage
compartment for CDs or tapes, a dual cupholder that
unfolds, a coinholder, an optional phone and an armrest.
The cupholder can be opened by pressing on the surface
panel located in front of the armrest and unfolding it.
Close the lid to secure.
Rear Storage Armrest
Your vehicle is equipped with a rear seat armrest which
includes an open storage compartment and a dual
cupholder that unfolds for use. Pull the armrest down by
using the attached handle. Push in the lever located at
the end of the armrest to open the storage compartment
and access the cupholder.
Wastebasket
The wastebasket is located on the passenger's side near
the footwell. To remove, pull the bottom portion
outward to release the velcro and slide the basket toward
you. Reverse the steps to reinstall.
Convenience Net
The convenience net is inside the back wall 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.

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2-76 Security Light
For information regarding
this light, see
ªTheft
-Deterrent Systemº
in the Index.
Cruise Control Light
This light comes on
whenever you set your
vehicle's cruise control.
Fog Lamp Light (STS Only)
This light will come on
when the fog lamp button is
pressed. For more
information about the fog
lamps, see ªFog Lampsº in
the Index.
Lights On Reminder Light
United States Canada
This is a telltale that comes on whenever the parking
lamps are on, so that you know your lights are on.

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STABILITY SYS ENGAGED - 55 : You may see the
STABILITY SYS ENGAGED message on the Driver
Information Center. It means that an advanced,
computer
-controlled system has come on to help your
vehicle continue to go in the direction in which you're
steering. This stability enhancement system activates
when the computer senses that your vehicle is just
starting to spin, as it might if you hit a patch of ice or
other slippery spot on the road. When the system is on,
you may hear a noise or feel a vibration in the brake
pedal. This is normal.
When the STABILITY SYS ENGAGED message is on,
you should continue to steer in the direction you want to
go. The system is designed to help you in bad weather or
other difficult driving situations by making the most of
whatever road conditions will permit. If the STABILITY
SYS ENGAGED message comes on, you'll know that
something has caused your vehicle to start to spin, so
you should consider slowing down.
SERVICE STEERING SYS
- 127: This message is
displayed when a problem has been detected in the
Magnasteer

variable effort steering system. Service is
required. A single chime will also sound when this
message is displayed.SERVICE SUSPENSION SYS
- 84: This message is
displayed to indicate that the suspension system is not
operating properly. To correct this problem, have your
vehicle serviced at your dealership.
SERVICE THEFT SYSTEM
- 34: This message
means there is a problem in the Personalized
Automotive Security System (PASS
-Key
III). A fault
has been detected in the system which means that the
PASS
-Key III system is disabled and is not protecting
the vehicle. The vehicle usually restarts, however, you
may want to take your vehicle to a proper service center
before turning off the engine.
SERVICE TRANSMISSION
- 100: See your dealer
for repair.
SERVICE VEHICLE SOON
- 3: This message is
displayed when a non
-emissions related powertrain
malfunction occurs. Have your vehicle serviced by a
technician as soon as possible.
SPEED LIMITED TO 90
- 113: A failure in the
suspension control system has occurred when this
message appears. The Powertrain Control Module
(PCM) determines the speed to which your vehicle is
limited. Have your vehicle serviced if this
message appears.

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STARTING DISABLED REMOVE KEY - 33: This
message will appear when the Personalized Automotive
Security System (PASS
-Key
III) senses that an
improper ignition key is being used to try to start the
vehicle. Check the ignition key for damage. If it is
damaged, it may need to be replaced. If you see no
damage, remove the key and try to start the vehicle
again. If it still does not start, try another ignition key.
THEFT ATTEMPTED
- 40: This message is
displayed if the theft system has detected a break
-in
attempt while you were away from your vehicle.
TOP SPEED FUEL CUT
-OFF - 111 : This message
will appear when the Powertrain Control Module (PCM)
senses that the maximum speed for your vehicle has
been reached. The speed of your vehicle will surge as
the fuel supply is cut off. This allows your vehicle to
stay in a safe tire operating range. The top speed is set
based on the top speed rating of the tires.
TRACTION ENGAGED
- 91 : When your traction
control system is limiting wheel spin, the TRACTION
ENGAGED message will be displayed. Slippery road
conditions may exist if this message is displayed, so
adjust your driving accordingly. This message will stay
on for a few seconds after the traction control system
stops limiting wheel spin.TRACTION OFF
- 89: This message will be displayed
after the traction control has been turned off by the
button on the center console.
TRACTION READY
- 90: This message informs the
driver that the traction control system is available. This
occurs when the traction control switch on the console
has been returned to ON (pressing the button once turns
the traction control system off: pressing the button again
turns the system back on). This message will
automatically disappear from the display after
five seconds.
TRACTION SUSPENDED
- 56: This message
displays when the traction control system has been
temporarily shut off because your vehicle's brakes have
overheated. This message does not indicate a problem
with your vehicle's traction control system. After a few
minutes, the traction control system will be available
again and the TRACTION READY message
will appear.
TRANS HOT IDLE ENGINE
- 112: This message
indicates that the transaxle fluid in your vehicle is too
hot. Stop and allow your vehicle to idle until it cools
down or until this message is removed.