1999 CADILLAC DEVILLE ECU

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2-12
To install the storage system:
1. Pull the carpeting from the floor of the trunk. Turn
the retainer (center dial) on the compact spare tire
cover counterclockwise to remove it.
2. Place the trunk storage system on the center of the
trunk floor (the cut out portion of the storage system
should be facing the rear of the vehicle).
3. Open the storage system by pulling up on the handle
located in the carpeted area. This allows the unit to
unfold into place. Unfold the divider walls and move
them into the retention slots.
4. Remove the rectangular access panel from the floor
of the storage system. The access panel should
unsnap by hand.
5. Center the storage system access hole over the area
where the spare tire is secured by the retainer.
Position the storage system as needed and then
secure it with the retainer.
6. Replace the access panel.
7. Attach the removable net to the slots located on the
front of the divider walls and attach the hooks to the
holes on each side of the storage system.Once in place, the storage system can be moved
forward or rearward for convenience and easy access of
stored items.
The following steps explain how to remove the trunk
storage system for cleaning or in case you need to access
the spare tire. Follow all of these steps if the storage
system is in the closed position. Begin with Step 2 if the
system is already open.
1. Open the storage system by pulling up on the handle
located in the carpeted area. This allows the unit to
unfold into place. Unfold the divider walls and move
them into the retention slots.
2. Remove the rectangular access panel from the floor
of the storage system. The access panel should
unsnap by hand.
3. Center the storage system access hole over the area
where the spare tire is secured by the retainer.
Position the storage system as needed and then
remove the retainer (turn the retainer
counterclockwise to remove it).
4. Replace the access panel and remove the
storage system.

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2-15
Theft-Deterrent System (If Equipped)
If the ignition is off and
any door is open, the
SECURITY light will flash,
reminding you to activate
the system.
The light will also flash if the battery has been
disconnected and reconnected. To arm the system, do
the following:
1. Open the door.
2. Lock the door using the power door lock or the
remote keyless entry transmitter. The SECURITY
light should come on and stay on.
3. Close all the doors. The SECURITY light should go
off within about 30 seconds.
The horn will sound and the lamps will flash for about
30 seconds when the door or trunk is opened without the
key or the remote keyless entry transmitter. The horn
also sounds if the locks are damaged.Remember, the theft
-deterrent system won't activate if
you lock the doors with a key or use the manual door
lock. It activates only if you use a power door lock
button or the remote keyless entry transmitter.
To avoid activating the alarm by accident:

Always unlock a door with a key or use the remote
keyless entry transmitter. (Pressing the unlock button
on the remote keyless entry transmitter disables the
theft
-deterrent system.) Unlocking a door any other
way will activate the alarm. Cycling the ignition
without disarming the theft
-deterrent system will
also activate the alarm.

The vehicle should be locked with the door key after
the doors are closed if you don't want to activate the
theft
-deterrent system.
If you activate the alarm by accident, unlock any door
with your key. You can also turn off the alarm by using
the unlock button of the remote keyless entry
transmitter. The alarm won't stop if you try to unlock a
door any other way.

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2-16 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 remote
keyless entry transmitter and close the door. Wait
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
headlamps will flash.
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 activate the
theft
-deterrent system when leaving your vehicle.
Valet Lockout Button
Pressing the VALET
lockout button located
inside the glove box to ON
will disable the use of the
power trunk, fuel door and
garage door openers.
Pressing this button again
will make these features
reusable. Locking the
glove box with the door
key will also help to secure
your vehicle.
Note: The remote keyless entry transmitter can't be used
to open the trunk or fuel door if the VALET lockout
button is in the ON position.

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2-53
Storage Compartments
Glove Box
The glove box is located in front of the passenger's seat.
To lock the glove box door, insert the oval key into the
lock cylinder and turn it clockwise. Turn the key
counterclockwise to unlock the door.
Front Storage Area (DeVille and
DeVille d'Elegance Only)
The front storage area comes with a coinholder, a
storage compartment for CDs or tapes, an optional
phone and a dual cupholder that unfolds for use.
Map Pocket
The map/storage pockets are located on each front
door as well as on the passenger's and driver's
front seatbacks.
Center Console Storage
(DeVille Concours Only)
The full console includes a storage compartment for
CDs or tapes, an optional phone, an armrest and a
cupholder. The cupholder can be opened by pressing on
the surface panel located in front of the armrest. Close
the lid to secure.

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2-54 Rear Storage Armrest (If Equipped)
Your vehicle may be equipped with a rear seat armrest
which includes an open storage compartment and a dual
cupholder that unfolds for use. To open, lift the front
edge. (This feature is available on vehicles with leather
interiors only.)
Convenience Net
The convenience net is located 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.
Ashtrays and Cigarette Lighter
NOTICE:
Don't put papers or other flammable items
into your ashtrays. Hot cigarettes or other
smoking materials could ignite them, causing a
damaging fire.
Front Ashtray
With the full center console (available on DeVille
Concours only), the ashtray is located below the climate
control system. To open, press on the lower edge of the
cover. To clean the ashtray, lift it out by gripping the
sides. For vehicles without the center console, pull the
tray out to reveal the ashtray. The tray is located beneath
the radio. To clean this ashtray, lift it out by pulling on
the snuffer.

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2-86
ICE POSSIBLE - 13: This message appears when
the outside air temperature is cold enough to create icy
road conditions.
LOW
-REFRIG A/C OFF - 12: This message means
that the air conditioning system detects a refrigerant
level that is low enough to cause damage to the air
conditioning compressor. To avoid damage, the air
conditioning compressor automatically turns off and the
electronic climate control system will automatically
switch from AUTO to ECON and remain there.
Have the air conditioning system serviced if this
message appears.
MONITORED SYSTEMS OK
- 1: This message only
appears in the ªrecallº mode by pressing the RESET NO
(NO INFO RESET) button. It lets you know that no
other messages are stored or currently active.
OIL PRESSURE LOW STOP ENGINE
- 35: If this
message appears while the engine is running, stop the
engine and do not operate it until the cause of low oil
pressure is corrected. Severe damage to the engine can
result. A multiple chime will also sound when this
message is displayed.
OPTIONS NOT SET
- 99: This message will display if
a fault has occurred in your vehicle's memory. See your
dealership for service.PROGRAM PASS KEY
- 31: This warning message
displays when the PASS
-Key
II pellet information has
not been programmed into your vehicle. See your
dealership for service.
PHONE NOT PRESENT
- 126: This message will
appear when the steering wheel controls for the optional
phone system are activated but the phone is not plugged
into the vehicle. Make sure your phone is plugged in. If
your phone appears to be connected, see your dealership
for service.
REMOVE KEY
- 70: This message will appear when
the Personalized Automotive Security System
(PASS
-Key
II) is unable to read the pellet on the
ignition key or an improper key pellet has been inserted.
This message typically appears following the display of
STARTING DISABLED, REMOVE KEY. The
instrument panel cluster will then run a timer and
change the messages to WAIT 3 MINUTES, WAIT 2
MINUTES, WAIT 1 MINUTE and then START CAR.
When the REMOVE KEY message is displayed, remove
the ignition key. Check the ignition key for damage. If it
is damaged, it may need to be replaced. If you see no
damage, clean the pellet contacts with a soft cloth or
napkin before inserting the key back into the ignition.
Have your vehicle serviced if the message still appears.

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2-88
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.
STARTING DISABLED REMOVE KEY
- 33: This
message will appear when the Personalized Automotive
Security System (PASS
-Key
II) senses that an
improper ignition key is being used to try to start the
vehicle. Check the ignition key for damage. If it isdamaged, it may need to be replaced. If you see no
damage, clean the pellet contacts with a soft cloth or
napkin. Remove the ignition key and wait for the DIC to
display WAIT 3 MINUTES. The instrument panel
cluster will then run a timer and change the messages to
WAIT 2 MINUTES, WAIT 1 MINUTE and then
START CAR. When the START CAR message is
displayed, try again to start the engine.
THEFT SYSTEM PROBLEM/CAR MAY NOT
RESTART
- 34: This message means there is a
problem in the Personalized Automotive Security
System (PASS
-Key
II). A fault has been detected
in the system which means that the PASS
-Key II
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.
TOP SPEED
- FUEL OFF - 111 : This message will
appear when the PCM senses that the maximum speed
for your vehicle has been reached. The speed of your
vehicle will decrease several mph as the fuel supply is
cutoff. This allows your vehicle to stay in a stable
operating range.

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4-25
Winter Driving
Here are some tips for winter driving:

Have your vehicle in good shape for winter.

You may want to put winter emergency supplies in
your trunk.
Include an ice scraper, a small brush or broom, a supply
of windshield washer fluid, a rag, some winter outer
clothing, a small shovel, a flashlight, a red cloth and a
couple of reflective warning triangles. And, if you will
be driving under severe conditions, include a small bag
of sand, a piece of old carpet or a couple of burlap bags
to help provide traction. Be sure you properly secure
these items in your vehicle.