2007 CADILLAC CTS V service

Service and Appearance Care
.................. 329
Service
................................................. 332
Fuel
...................................................... 334
Checking Things Under
the Hood
........................................... 340
Rear Axle
............................................. 382
Headlamp Aiming
................................. 383
Bulb Replacement
................................ 386
Windshield Wiper Blade
Replacement
..................................... 390
Tires
..................................................... 392
Appearance Care
.................................. 435Vehicle Identication
............................. 445
Electrical System
.................................. 446
Capacities and Specications
................ 457
Maintenance Schedule
.............................. 459
Maintenance Schedule
.......................... 460
Customer Assistance Information
............. 481
Customer Assistance and Information
... 482
Reporting Safety Defects
...................... 500
Index
.......................................................... 503
2

Your vehicle has a feature that may automatically
unlock the doors, turn the interior lamps on,
and turn the hazard warning ashers on when the
airbags inate. You can lock the doors, turn the
interior lamps off, and turn the hazard warning
ashers off by using the controls for those
features.
In many crashes severe enough to inate the
airbag, windshields are broken by vehicle
deformation. Additional windshield breakage may
also occur from the right front passenger airbag.
Airbags are designed to inate only once.
After an airbag inates, you will need
some new parts for the airbag system. If you
do not get them, the airbag system will
not be there to help protect you in another
crash. A new system will include airbag
modules and possibly other parts. The service
manual for your vehicle covers the need to
replace other parts.
Your vehicle has a crash sensing and
diagnostic module which records information
after a crash. SeeVehicle Data Collection and
Event Data Recorders on page 494.
Let only qualied technicians work on the
airbag systems. Improper service can
mean that an airbag system will not work
properly. See your dealer for service.
81

{CAUTION:
If the airbag readiness light in the
instrument panel cluster ever comes on
and stays on, it means that something
may be wrong with the airbag system.
If this ever happens, have the vehicle
serviced promptly, because an adult-size
person sitting in the right front passenger’s
seat may not have the protection of the
airbag(s). SeeAirbag Readiness Light on
page 201for more on this, including
important safety information.A thick layer of additional material such as a
blanket, or aftermarket equipment such as seat
covers, seat heaters and seat massagers
can affect how well the passenger sensing system
operates. Remove any additional material from
the seat cushion before reinstalling or securing the
child restraint or small occupant. You may want
to consider not using seat covers or other
aftermarket equipment if your vehicle has the
passenger sensing system. SeeAdding Equipment
to Your Airbag-Equipped Vehicle on page 89for
more information about modications that can
affect how the system operates.
87

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 501.
{CAUTION:
For up to 10 seconds, after the ignition 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.
88

One key works all of
the lock cylinders on
the vehicle.
Your vehicle has an Immobilizer Vehicle
Theft-Deterrent System. The key has a transponder
in the key head that matches a decoder in the
vehicle’s steering column. If a replacement key or
any additional key is needed, you must purchase it
from your dealer. The key will have PK3+ stamped
on it. Keep the bar code tag that came with the
original keys. Give this tag to your dealer if you
need a new key made.
Notice:If you ever lock your keys in your
vehicle, you may have to damage the vehicle
to get in. Be sure you have spare keys.
In an emergency, contact Cadillac Roadside
Service
®. SeeRoadside Service on page 488.
Remote Keyless Entry (RKE) System
Your Remote Keyless Entry (RKE) 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 interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
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.
96

At times you may notice a decrease in operating
range. This is normal for any RKE system.
If the transmitter does not work or if you have to
stand closer to your vehicle for the transmitter
to work, try this:
Check the distance. You may be too far from
your vehicle. You may need to stand closer
during rainy or snowy weather.
Check the location. Other vehicles or objects
may be blocking the signal. Take a few steps
to the left or right, hold the transmitter
higher, and try again.
Check to determine if battery replacement is
necessary. See “Battery Replacement”
underRemote Keyless Entry (RKE) System
Operation on page 97.
If you are still having trouble, see your
dealer/retailer or a qualied technician
for service.
Remote Keyless Entry (RKE)
System Operation
With this feature, you can lock and unlock the
doors or the trunk and turn on your vehicle’s
interior lamps from about 10 feet (3 m) away using
the Remote Keyless Entry (RKE) transmitter
supplied with your vehicle.
Q(Lock):Press this
symbol on the RKE
transmitter to lock
the doors. This also
arms the theft-deterrent
system.
You can program your vehicle so that the exterior
lamps will ash and/or the horn will sound
when you lock the doors with the RKE transmitter.
SeeDIC Vehicle Personalization on page 242
for more information on programming this feature.
97

Testing the Alarm
1. 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.
The alarm can be turned off by unlocking the
driver’s door with the 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 447. 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.
Immobilizer
This device complies with Part 15 of the FCC
Rules. 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.
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.
113

Immobilizer Operation
Your vehicle has a
passive theft-deterrent
system.
The system works when the key is turned to ON.
The key uses a transponder that matches an
immobilizer control unit in your vehicle. Only the
correct key will start the vehicle. If the key is ever
damaged, you may not be able to start your vehicle.When trying to start the vehicle, if the engine does
not start and the security light comes on, the
key may have a damaged transponder. 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. SeeFuses and Circuit Breakers on
page 447. 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 who can service the
theft-deterrent system and have a new key made.
It is possible for the theft-deterrent system decoder
to learn the transponder value of a new or
replacement key. Up to 10 additional keys may be
programmed for the vehicle. The following
procedure is for programming additional keys only.
114