2006 CADILLAC DTS ECU

The passenger sensing system is designed to turn off
the right front passenger’s frontal airbag and
seat-mounted side impact airbag if:
the right front passenger seat is unoccupied
the system determines that an infant is present in a
rear-facing infant seat
the system determines that a small child is present
in a forward-facing child restraint
the system determines that a small child is present
in a booster seat
a right front passenger takes his/her weight off of
the seat for a period of time
the right front passenger seat is occupied by a
smaller person, such as a child who has outgrown
child restraints
or if there is a critical problem with the airbag
system or the passenger sensing system.When the passenger sensing system has turned off the
right front passenger’s frontal airbag and seat-mounted
side impact airbag, the off indicator will light and
stay lit to remind you that the airbags are off.
If a child restraint has been installed and the on
indicator is lit, turn the vehicle off. Remove the child
restraint from the vehicle and reinstall the child restraint
following the child restraint manufacturer’s directions
and refer toSecuring a Child Restraint in the Right Front
Seat Position on page 1-51.
If after reinstalling the child restraint and restarting the
vehicle, the on indicator is still lit, check to make
sure that the vehicle’s seatback is not pressing the child
restraint into the seat cushion. If this happens, slightly
recline the vehicle’s seatback and adjust the seat
cushion if possible. Also make sure the child restraint is
not trapped under the vehicle head restraint. If this
happens, adjust the head restraint.
If the on indicator is still lit, secure the child in the child
restraint in a rear seat position in the vehicle and
check with your dealer.
1-67

Servicing Your Airbag-Equipped
Vehicle
Airbags affect how your vehicle should be serviced.
There are parts of the airbag system in several places
around your vehicle. You do not want the system to
inate while someone is working on your vehicle. Your
dealer and the service manual have information
about servicing your vehicle and the airbag system. To
purchase a service manual, seeService Publications
Ordering Information on page 7-14.
{CAUTION:
For up to 10 seconds after the ignition key is
turned off and the battery is disconnected, an
airbag can still inate during improper service.
You can be injured if you are close to an
airbag when it inates. Avoid yellow
connectors. They are probably part of the
airbag system. Be sure to follow proper
service procedures, and make sure the person
performing work for you is qualied to do so.
The airbag system does not need regular maintenance.
Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to the front or
sides of the vehicle that could keep the
airbags from working properly?
A:Yes. If you add things that change your vehicle’s
frame, bumper system, height, front end or side
sheet metal, they may keep the airbag system
from working properly. Also, the airbag system may
not work properly if you relocate any of the airbag
sensors. If you have any questions about this,
you should contact Customer Assistance before you
modify your vehicle. The phone numbers and
addresses for Customer Assistance are in Step Two
of the Customer Satisfaction Procedure in this
manual. SeeCustomer Satisfaction Procedure on
page 7-2.
1-70

Q:Because I have a disability, I have to get my
vehicle modied. How can I nd out whether
this will affect my airbag system?
A:Changing or moving any parts of the front seats,
safety belts, the airbag sensing and diagnostic
module, steering wheel, instrument panel, overhead
console, ceiling headliner, ceiling and pillar
garnish trim, roof-mounted airbag modules, or
airbag wiring can affect the operation of the airbag
system. If you have questions, call Customer
Assistance. The phone numbers and addresses for
Customer Assistance are in Step Two of the
Customer Satisfaction Procedure in this manual.
SeeCustomer Satisfaction Procedure on page 7-2.
Restraint System Check
Checking the Restraint Systems
Now and then, make sure the safety belt reminder light
and all your belts, buckles, latch plates, retractors
and anchorages are working properly. Look for any other
loose or damaged safety belt system parts. If you see
anything that might keep a safety belt system from doing
its job, have it repaired. SeeCare of Safety Belts on
page 5-86for more information.Torn or frayed safety belts may not protect you in a
crash. They can rip apart under impact forces. If a belt
is torn or frayed, get a new one right away.
Also look for any opened or broken airbag covers, and
have them repaired or replaced. The airbag system
does not need regular maintenance.
Notice:If you damage the covering for the driver’s
or the right front passenger’s airbag, or the airbag
covering on the driver’s and right front passenger’s
seatback, or the side impact airbag covering (if
equipped) on the ceiling near the side windows, the
bag may not work properly. You may have to
replace the airbag module in the steering wheel,
both the airbag module and the instrument panel for
the right front passenger’s airbag, the airbag
module and seatback for the driver’s and right front
passenger’s seat-mounted side impact airbags,
or side impact airbag module and ceiling covering
for the roof-mounted side impact airbag (if
equipped). Do not open or break the airbag
coverings.
1-71

Keys...............................................................2-3
Remote Keyless Entry System.........................2-4
Remote Keyless Entry System Operation...........2-5
Doors and Locks............................................2-10
Door Locks..................................................2-10
Central Door Unlocking System......................2-11
Power Door Locks........................................2-11
Programmable Automatic Door Locks..............2-11
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Trunk..........................................................2-13
Windows........................................................2-15
Power Windows............................................2-16
Sun Visors...................................................2-18
Theft-Deterrent Systems..................................2-19
Valet Lockout Switch.....................................2-19
Content Theft-Deterrent.................................2-19
PASS-Key
®III+............................................2-21
PASS-Key®III+ Operation..............................2-21
Starting and Operating Your Vehicle................2-23
New Vehicle Break-In....................................2-23
Ignition Positions..........................................2-23Retained Accessory Power (RAP)...................2-24
Starting the Engine.......................................2-24
Engine Coolant Heater..................................2-25
Automatic Transaxle Operation.......................2-26
Performance Shifting.....................................2-29
Parking Brake..............................................2-30
Shifting Into Park (P).....................................2-30
Shifting Out of Park (P).................................2-32
Parking Over Things That Burn.......................2-33
Engine Exhaust............................................2-33
Running the Engine While Parked...................2-34
Mirrors...........................................................2-35
Automatic Dimming Rearview Mirror with
Intellibeam™, OnStar
®, and Compass..........2-35
Automatic Dimming Rearview Mirror with
OnStar
®and Compass...............................2-37
Automatic Dimming Rearview Mirror with
Compass.................................................2-39
Outside Power Foldaway Mirrors.....................2-41
Outside Automatic Dimming Mirror..................2-42
Outside Curb View Assist Mirror.....................2-42
Outside Convex Mirror...................................2-42
Outside Heated Mirrors..................................2-42
Section 2 Features and Controls
2-1

Rear Door Security Locks
Your vehicle has security locks that prevent passengers
from opening the rear doors from the inside.
The rear door security
locks are located on the
inside edge of each rear
door. You must open the
rear doors to access them.
To use these locks, do the following:
1. Turn the knob below the security lock label to the
vertical position to engage the lock.
2. Close the door.
3. Do the same for the other rear door.
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 when 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 knob.
2. 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 below the security lock label to the
horizontal position to disengage the lock.
3. Do the same for the other rear door.
Lockout Protection
If the key is in the ignition and the power door lock
switch is used to lock the doors, all doors will lock
and then the driver’s door will unlock. It is always
recommended that you remove the ignition key when
locking your vehicle.
The lockout protection feature can be overridden by
holding the power door lock switch for three seconds
or longer.
2-12

Emergency Trunk Release Handle
Notice:Do not use the emergency trunk release
handle as a tie-down or anchor point when securing
items in the trunk as it could damage the handle.
The emergency trunk release handle is only
intended to aid a person trapped in a latched trunk,
enabling them to open the trunk from the inside.
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 to open the trunk from the inside.
Rear Seat Pass-Through
Your vehicle has a small door in the rear seat. This
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. To close
the door, raise it and push it until it latches.
2-14

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.
Valet Lockout Switch
The valet lockout switch
is located inside the
glove box.
9(Off):Press this side of the button to turn the
lockout feature off. When the lockout feature is off, you
can open the trunk using either the keyless entry
transmitter or the trunk release button located near the
headlamp switch on the instrument panel.
R(On):Press this side of the button to turn the
lockout feature on. When the lockout feature is turned
on, the trunk cannot be unlocked with the keyless
entry transmitter or the trunk release button located near
the headlamp switch on the instrument panel.
If the valet lockout feature is on it will also disable the
Universal Home Remote transmitter, if equipped.
Locking the glove box with your key will also help to
secure your vehicle.
SeeRemote Keyless Entry System Operation on
page 2-5andTrunk on page 2-13for additional
information.
Content Theft-Deterrent
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.
2-19

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.
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.
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.
2-20