2005 CADILLAC DEVILLE ECU

5. Pull the rest of the lap belt all the way out of the
retractor to set the lock.6. To tighten the belt, feed the lap belt back into the
retractor while you push down on the child restraint.
You may nd it helpful to use your knee to push
down on the child restraint as you tighten the belt.
7. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, just unbuckle the vehicle’s
safety belt and let it go back all the way. The safety
belt will move freely again and be ready to work for an
adult or larger child passenger.
1-47

{CAUTION:
Anyone who is up against, or very close to,
any airbag when it inates can be seriously
injured or killed. Airbags plus lap-shoulder
belts offer the best protection for adults, but
not for young children and infants. Neither the
vehicle’s safety belt system nor its airbag
system is designed for them. Young children
and infants need the protection that a child
restraint system can provide. Always secure
children properly in your vehicle. To read how,
seeOlder Children on page 1-28orInfants and
Young Children on page 1-31.There is an airbag readiness light on the instrument
panel, which shows the words AIR BAG or an
airbag symbol.
The system checks the airbag electrical system for
malfunctions. The light tells you if there is an electrical
problem. SeeAirbag Readiness Light on page 3-45
for more information.United States
Canada
1-50

Keys...............................................................2-3
Remote Keyless Entry System.........................2-5
Remote Keyless Entry System Operation...........2-6
Doors and Locks.............................................2-9
Door Locks....................................................2-9
Central Door Unlocking System......................2-10
Power Door Locks........................................2-10
Programmable Automatic Door Locks..............2-10
Rear Door Security Locks..............................2-11
Lockout Protection........................................2-11
Trunk..........................................................2-12
Windows........................................................2-15
Power Windows............................................2-16
Sun Visors...................................................2-18
Theft-Deterrent Systems..................................2-19
Valet Lockout Switch.....................................2-21
PASS-Key
®III ..............................................2-21
PASS-Key®III Operation...............................2-22
Starting and Operating Your Vehicle................2-24
New Vehicle Break-In....................................2-24
Ignition Positions..........................................2-24
Retained Accessory Power (RAP)...................2-25
Starting the Engine.......................................2-26
Engine Coolant Heater..................................2-27
Automatic Transaxle Operation.......................2-28Performance Shifting (DTS Only)....................2-31
Parking Brake..............................................2-31
Shifting Into Park (P).....................................2-32
Shifting Out of Park (P).................................2-34
Parking Over Things That Burn.......................2-35
Engine Exhaust............................................2-35
Running the Engine While Parked...................2-36
Mirrors...........................................................2-37
Automatic Dimming Rearview Mirror with
OnStar
®...................................................2-37
Automatic Dimming Rearview Mirror with
OnStar
®and Compass...............................2-38
Outside Power Mirrors...................................2-40
Outside Automatic Dimming Mirror..................2-41
Outside Curb View Assist Mirror.....................2-41
Outside Convex Mirror...................................2-41
Outside Heated Mirrors..................................2-41
OnStar
®System.............................................2-42
HomeLink®Wireless Control System...............2-44
HomeLink®Wireless Control System
Operation.................................................2-45
Storage Areas................................................2-49
Glove Box...................................................2-49
Instrument Panel Storage Area.......................2-49
Front Storage Area.......................................2-49
Section 2 Features and Controls
2-1

Rear Door Security Locks
Your vehicle is equipped with rear door security locks
that prevent passengers from opening the rear doors on
your vehicle from the inside.
The rear door security
locks are located on the
edge of each rear
door. You must open the
doors to access them.
To use these locks, do the following:
1. Turn the knob located on the passenger’s side rear
door clockwise to engage the lock.
2. Close the door.
3. Turn the knob located on the driver’s side rear door
counterclockwise to engage the lock.
The rear doors on your vehicle cannot be opened from
the inside when this feature is in use.When you want to open a rear door while the security
lock is on, do the following:
1. Unlock the door using the remote keyless entry
transmitter, the front door power lock switch or
by lifting the rear door manual lock.
2. Then open the door from the outside.
To cancel the rear door security lock, do the following:
1. Unlock the door and open it from the outside.
2. Turn the knob on the passenger’s side of the rear
door counterclockwise all the way back to the
original position.
3. Turn the knob on the driver’s side of the rear door
clockwise all the way back to the original position.
The rear door locks will now work normally.
Lockout Protection
Leaving your key in any ignition position with any door
open will disable the power door lock switches as
well as the lock button on the remote keyless entry
transmitter. If you close the doors, you can lock them
using the remote keyless entry transmitter. It is
always recommended that you remove the ignition key
when locking your vehicle.
The anti-lockout feature can be overridden by holding
the power door lock switch for three seconds or longer.
2-11

Trunk Lid Tie Down
{CAUTION:
Driving with the trunk lid open can allow
dangerous CO (carbon monoxide) gas to come
into your vehicle. You can not see or smell CO.
It can cause unconsciousness and even death.
If you ever need to drive with your trunk lid
open, then:
Make sure all windows, the rear seat
pass-through and sunroof are closed.
Turn the fan on your heating and cooling
system to its highest speed, with the
setting on AUTO and temperature between
65°F (18°C) and 85°F (29°C). This forces
fresh outside air into your vehicle.
Open all air ducts on the instrument panel.
Do not use the trunk lid tie down if you are
towing a trailer because of the danger of CO.Your vehicle may be equipped with a trunk-lid tie down.
This feature is used to secure the trunk lid if it will
not close completely, such as when carrying large
packages in the trunk. Use the following steps to secure
the trunk lid:
1. Attach the clip end of the tie down to the D ring on
the trunk lid (A).
2. Attach the hook end of the tie down to the striker
located at the center of the trunk sill (B).
3. Tighten the tie down by pulling the free end of the
cord until secure.
4. To remove the tie down, press the clip end release
and loosen the cord.
2-13

Emergency Trunk Release Handle
Notice:Using the emergency trunk release handle
as a tie-down or anchor point when securing
items in the trunk may damage it. Use the
emergency trunk release handle only to help you
open the trunk lid.
There is a glow-in-the-dark emergency trunk release
handle located inside the trunk near the latch.
This handle will glow following exposure to light.
Pull the release handle upward to open the trunk
from the inside.
Rear Seat Pass Through
Your vehicle may be equipped with a small door in the
rear seat. The door allows you to access the trunk
from inside the vehicle.
The rear-seat armrest must be down for the pass-through
door to open. To release the pass-through door, move
the release up with your ngers. Then close the door so it
latches from inside the vehicle.
2-14

The rear power sunshade switch only works while the
ignition is on or while the Retained Accessory
Power (RAP) is active. SeeRetained Accessory Power
(RAP) on page 2-25.
To raise the power sunshade, press and release the
REAR SHADE switch located on the front overhead
console. To close the power sunshade, press and
release the REAR SHADE switch again.
Never store objects on the rear shelf because they may
get caught in the sunshade or be tossed about in
your vehicle.
Manual Rear Side Door Sunshade
Your vehicle may have manual rear side door
sunshades. To use the sunshades, lower the side
windows and hook the top edge of the retractable
sunshades over the edge of the windows and raise the
windows. To remove the shades, lower the windows
and the hooks will disengage automatically.
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.
The SECURITY light is
located on the instrument
panel cluster.
If the ignition is off and any door is open, the SECURITY
light will ash, reminding you to arm the system.
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 transmitter.
The SECURITY light should come on and stay on.
3. Close all the doors. The SECURITY light should go
off within approximately 30 seconds.
2-19

If a door or the trunk is opened without a key or a
remote keyless entry transmitter, the horn will sound
and the lamps will ash for about 30 seconds.
Remember, the theft-deterrent system will not 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 remote keyless entry transmitter.
To avoid activating the alarm by accident do the
following:
The vehicle should be locked with the door key or
the manual door lock after the doors are closed if
you do not want to arm the theft-deterrent system.
Always unlock a door with a key or use the remote
keyless entry transmitter system. 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 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 remote keyless entry
transmitter system, or by starting the car with a valid key.
Changes or modications 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
remote keyless entry 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 ash.
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, seeFuses and Circuit Breakers on
page 5-98. 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.
2-20