2008 CADILLAC SRX ECU

The passenger sensing system is designed to turn off
the right front passenger’s frontal 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 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, the off indicator
will light and stay lit to remind you that the airbag is off.
SeePassenger Airbag Status Indicator on page 3-35.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 1-52.
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. SeeHead Restraints on page 1-9.
Remove any additional material from the seat such as
blankets, cushions, seat covers, seat heaters, or seat
massagers before reinstalling or securing the child
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/retailer.
1-67

In addition, your vehicle has a passenger sensing
system for the right front passenger’s position, which
includes sensors that are part of the passenger’s
seat. The passenger sensing system may not
operate properly if the original seat trim is replaced
with non-GM covers, upholstery or trim, or with GM
covers, upholstery or trim designed for a different
vehicle. Any object, such as an aftermarket seat
heater or a comfort enhancing pad or device,
installed under or on top of the seat fabric, could also
interfere with the operation of the passenger sensing
system. This could either prevent proper deployment
of the passenger airbag(s) or prevent the passenger
sensing system from properly turning off the
passenger airbag(s). SeePassenger Sensing
System on page 1-65.
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.
If your vehicle has rollover roof-rail airbags, see
Different Size Tires and Wheels on page 5-70
for additional important information.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: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. See
Customer Satisfaction Procedure on page 7-2.
In addition, your dealer/retailer and the service
manual have information about the location of the
airbag sensors, sensing and diagnostic module and
airbag wiring.
1-71

Keys...............................................................2-3
Remote Keyless Entry (RKE) System................2-4
Remote Keyless Entry (RKE) System
Operation...................................................2-5
Remote Vehicle Start......................................2-7
Doors and Locks............................................2-10
Door Locks..................................................2-10
Central Door Unlocking System......................2-10
Power Door Locks........................................2-10
Delayed Locking...........................................2-11
Programmable Automatic
Door Locks...............................................2-11
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Power Liftgate..............................................2-13
Windows........................................................2-16
Power Windows............................................2-17
Sun Visors...................................................2-20
Theft-Deterrent Systems..................................2-20
Theft-Deterrent System..................................2-20
PASS-Key
®III+............................................2-22
PASS-Key®III+ Operation..............................2-22Starting and Operating Your Vehicle................2-24
New Vehicle Break-In....................................2-24
Ignition Positions..........................................2-25
Retained Accessory Power (RAP)...................2-26
Starting the Engine.......................................2-26
Adjustable Throttle and Brake Pedal................2-28
Engine Coolant Heater..................................2-28
Automatic Transmission Operation...................2-30
Tow/Haul Mode............................................2-33
Parking Brake..............................................2-34
Shifting Into PARK (P)...................................2-36
Shifting Out of PARK (P)...............................2-38
Parking Over Things That Burn.......................2-38
Engine Exhaust............................................2-39
Running the Engine While Parked...................2-40
Mirrors...........................................................2-41
Automatic Dimming Rearview
Mirror with OnStar
®...................................2-41
Automatic Dimming Rearview Mirror with
OnStar
®and Compass...............................2-41
Outside Power Heated Mirrors........................2-43
Outside Automatic Dimming Mirror..................2-44
Park Tilt Mirrors............................................2-44
Outside Convex Mirror...................................2-44
Section 2 Features and Controls
2-1

Rear Door Security Locks
Your vehicle has rear door security locks. These 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. The rear
doors must be open
to access them. The
label showing lock
and unlock positions
is located near the lock.
To set the locks, do the following:
1. Insert the key into the security lock slot and
turn it so the slot is in the horizontal position.
2. Close the door.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, if the vehicle has one, the power door
lock switch, or by lifting the rear door manual lock.
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. Insert the key into the security lock slot and turn
it so the slot is in the vertical position.
Lockout Protection
If the power door lock switch is pressed when the key
is in the ignition and a door is open, all the doors
will lock and only the driver’s door will unlock. If you
close the doors, they can be locked by using the
Remote Keyless Entry (RKE) transmitter. Be sure to
remove the key from the ignition when locking your
vehicle.
This feature can be overridden by pressing the
lock button on the RKE transmitter or by pressing
the power lock switch a second time. Lock Label shown
2-12

Sun Visors
Swing down the primary visor to block out glare. It can
also be detached from the center mount and moved
to the side to block glare from that direction.
The driver’s sunshade may also have buttons for a
built-in garage door opener. SeeUniversal Home
Remote System on page 2-50for more information.
Lighted Visor Vanity Mirror
Pull the visor down and lift the cover. The light will
automatically come on. The light will go out when you
close the cover.
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.
Theft-Deterrent System
The security light
is located on
the instrument
panel cluster.
If the ignition is off and a door is open, the security
light will ash, reminding you to arm the theft-deterrent
system.
To arm the system:
1. Lock the door using the Remote Keyless Entry
(RKE) transmitter or the power door lock switch.
2. Close all the doors. The security light will illuminate.
It should go off within approximately 30 seconds.
2-20

If a door or a liftgate is opened without a key or a
RKE transmitter, the horn will sound and the lamps
will ash for up to 30 seconds.
The theft-deterrent system will not arm if you lock
the doors with a key, use the manual door lock or if
the liftgate is ajar. It activates only if you use the RKE
transmitter or the power door lock.
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
transmitter. Pressing the unlock button on the
RKE transmitter disarms the theft-deterrent system.
Unlocking a door any other way while the system
is armed will activate the alarm when a door or
the liftgate 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 transmitter,
or by starting the vehicle with a valid key.
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 RKE 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 ash.
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.
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 5-101. 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.
2-21

PASS-Key®III+
The 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.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications 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.
PASS-Key®III+ Operation
Your vehicle has PASS-Key®III+ (Personalized
Automotive Security System) theft-deterrent system.
PASS-Key
®III+ is a passive theft-deterrent system.
The system is automatically armed when the key
is removed from the ignition.
The system is automatically disarmed when the key is
turned to ON/RUN, ACC/ACCESSORY or START
from the LOCK/OFF position.
You do not have to manually arm or disarm the system.
The security light will come on if there is a problem
with arming or disarming the theft-deterrent system.
When the PASS-Key
®III+ system senses that someone
is using the wrong key, it prevents the vehicle from
starting. Anyone using a trial-and-error method to
start the vehicle will be discouraged because of the
high number of electrical key codes.
2-22

If the engine does not start and the security light on
the instrument panel cluster comes on when trying to
start the vehicle, there may be a problem with your
theft-deterrent system. 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
Fuses and Circuit Breakers on page 5-101. If the engine
still does not start with the other key, your vehicle
needs service. If your vehicle does start, the rst key
may be faulty. See your dealer/retailer who can service
the PASS-Key
®III+ to have a new key made. In an
emergency, contact Roadside Assistance.
It is possible for the PASS-Key
®III+ decoder to learn
the transponder value of a new or replacement key.
Up to eight additional keys may be programmed for
the vehicle. The following procedure is for programming
additional keys only. If all the currently programmed
keys are lost or do not operate, you must see your
dealer/retailer or a locksmith who can service
PASS-Key
®III+ to have keys made and programmed
to the system.See your dealer/retailer or a locksmith who can service
PASS-Key
®III+ to get a new key blank that is cut
exactly as the ignition key that operates the system.
To program the new additional key:
1. Verify that the new key has a
1stamped on it.
2. Insert the original, already programmed, key in
the ignition and start the engine. If the engine
will not start, see your dealer/retailer for service.
3. After the engine has started, turn the key to
LOCK/OFF, and remove the key.
4. Insert the new key to be programmed and turn it
to ON/RUN within ve seconds of the original key
being turned to LOCK/OFF.
The security light will turn off once the key has
been programmed.
5. Repeat Steps 1 through 4 if additional keys are
to be programmed.
If you lose or damage your PASS-Key
®III+ key, see
your dealer/retailer or a locksmith who can service
PASS-Key
®III+ to have a new key made.
Do not leave the key or device that disarms or
deactivates the theft deterrent system in the vehicle.
2-23