sensor CADILLAC CTS 2008 2.G Owners Manual

In addition, your vehicle has a dual-stage driver airbag.
Dual-stage airbags adjust the restraint according to
crash severity. Your vehicle has electronic frontal
sensors, which help the sensing system distinguish
between a moderate frontal impact and a more severe
frontal impact. For moderate frontal impacts, dual-stage
airbags inate at a level less than full deployment.
For more severe frontal impacts, full deployment occurs.
Your vehicle also has a dual-depth passenger airbag
that adjusts the restraint according to crash severity, seat
location, and safety belt status using electronic frontal
sensors and other special sensors which enable the
sensing system to monitor the position of the front
passenger seat. The passenger airbag inates to a
reduced depth when the passenger seat is in a forward
position. For more rearward front seating positions, the
passenger airbag may inate to an increased depth (a full
deployment), based on the crash severity measured early
in the event. (Always wear your safety belt, even with
frontal airbags.)
Your vehicle has seat position sensors which enables
the sensing system to monitor the position of the driver’s
and right front passenger’s seat. Seat position sensors
provide information that is used to determine if the
airbags should deploy at a reduced level or at full
deployment.Your vehicle has seat-mounted side impact and roof-rail
airbags. SeeAirbag System on page 1-56. Seat-mounted
side impact and roof-rail airbags are intended to inate
in moderate to severe side crashes. In addition, these
roof-rail airbags are intended to inate in a severe frontal
impact. Seat-mounted side impact and roof-rail airbags
will inate if the crash severity is above the system’s
designed threshold level. The threshold level can vary
with specic vehicle design.
Seat-mounted side impact airbags are not intended to
inate in frontal impacts, near-frontal impacts, rollovers,
or rear impacts. Roof-rail airbags are not intended to
inate in rollovers or rear impacts. A seat-mounted side
impact airbag is intended to deploy on the side of
the vehicle that is struck. Both roof-rail airbags will
deploy when either side of the vehicle is struck or in
a severe frontal impact.
In any particular crash, no one can say whether an
airbag should have inated simply because of the
damage to a vehicle or because of what the repair costs
were. For frontal airbags, ination is determined by what
the vehicle hits, the angle of the impact, and how quickly
the vehicle slows down. For seat-mounted side impact
and roof-rail airbags, deployment is determined by the
location and severity of the side impact.
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The passenger sensing system will turn off the right
front passenger’s frontal airbag and seat-mounted side
impact airbag under certain conditions. The driver’s
airbags are not part of the passenger sensing system.
The passenger sensing system works with sensors that
are part of the right front passenger’s seat. The sensors
are designed to detect the presence of a properly-seated
occupant and determine if the right front passenger’s
frontal airbag and seat-mounted side impact airbag
should be enabled (may inate) or not.
Accident statistics show that children are safer if they
are restrained in the rear rather than the front seat.
We recommend that children be secured in a rear seat,
including: an infant or a child riding in a rear-facing
child restraint; a child riding in a forward-facing child
seat; an older child riding in a booster seat; and children,
who are large enough, using safety belts.
A label on your sun visor says, “Never put a rear-facing
child seat in the front.” This is because the risk to the
rear-facing child is so great, if the airbag deploys.
{CAUTION:
A child in a rear-facing child restraint can be
seriously injured or killed if the right front
passenger airbag inates. This is because the
back of the rear-facing child restraint would be
very close to the inating airbag. A child in a
forward-facing child restraint can be seriously
injured or killed if the right front passenger
airbag inates and the passenger seat is in a
forward position.
Even if the passenger sensing system has
turned off the right front passenger frontal
airbag and seat-mounted side impact airbag
(if equipped), no system is fail-safe. No one
can guarantee that an airbag will not deploy
under some unusual circumstance, even
though the airbag(s) are off.
Secure rear-facing child restraints in a rear
seat, even if the airbag(s) are off. If you secure
a forward-facing child restraint in the right
front seat, always move the front passenger
seat as far back as it will go. It is better to
secure the child restraint in a rear seat.
1-66

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. Your dealer/retailer 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 7-17.
{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.
Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to or change
about the vehicle that could keep the airbags
from working properly?
A:Yes. If you add things that change the vehicle’s
frame, bumper system, height, front end or side
sheet metal, they may keep the airbag system from
working properly. Changing or moving any parts
of the front seats, safety belts, the airbag sensing
and diagnostic module, steering wheel, instrument
panel, roof-rail airbag modules, ceiling headliner
or pillar garnish trim, front sensors, or airbag wiring
can affect the operation of the airbag system.
1-70

In addition, the vehicle has a passenger sensing
system for the right front passenger 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.
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

Object Detection Systems
Ultrasonic Rear Parking
Assist (URPA)
For vehicles with the Ultrasonic Rear Parking Assist
(URPA) system, it operates at speeds less than 5 mph
(8 km/h), and assists the driver with parking and
avoiding objects while in REVERSE (R). The sensors
on the rear bumper are used to detect the distance to
an object up to 8 feet (2.5 m) behind the vehicle, and
at least 10 inches (25.4 cm) off the ground.
{CAUTION:
The Ultrasonic Rear Parking Assist (URPA)
system does not replace driver vision.
It cannot detect:
objects that are below the bumper,
underneath the vehicle, or if they are too
close or far from the vehicle
children, pedestrians, bicyclists, or pets.
CAUTION: (Continued)
CAUTION: (Continued)
If you do not use proper care before and while
backing; vehicle damage, injury, or death
could occur. Even with URPA, always check
behind your vehicle before backing up. While
backing, be sure to look for objects and check
your vehicle’s mirrors.
The display is located
above the rear window and
can be seen by looking
over your right shoulder.
URPA uses three color-coded lights to provide distance
and system information.
2-52

When the System Does Not Seem to
Work Properly
If the URPA system will not activate due to a temporary
condition, the message PARKING ASSIST OFF will be
displayed on the DIC and a red light will be shown on the
rear URPA display when the shift lever is moved into
REVERSE (R). This occurs under the following
conditions:
The driver disables the system.
The parking brake pedal is depressed.
The ultrasonic sensors are not clean. Keep the
vehicle’s rear bumper free of mud, dirt, snow, ice and
slush. For cleaning instructions, seeWashing Your
Vehicle on page 5-116.
A trailer was attached to the vehicle, or a bicycle or
an object was hanging out of the trunk during the last
drive cycle, the red light may illuminate in the rear
display. Once the attached object is removed, URPA
will return to normal operation.
A tow bar is attached to the vehicle.
The vehicle’s bumper is damaged. Take the vehicle
to your dealer/retailer to repair the system.
Other conditions may affect system performance,
such as vibrations from a jackhammer or the
compression of air brakes on a very large truck.
If the system is still disabled, after driving forward at
least 15 mph (25 km/h), take the vehicle to your
dealer/retailer.
2-54

1 (Low Speed):Move the lever to this position for
slow, steady wiping cycles.
2 (High Speed):Move the lever to this position for
rapid wiping cycles.
If the windshield wipers are in use for about six seconds
while you are driving, the exterior lamps come on
automatically if the exterior lamp control is in AUTO.
SeeWiper Activated Headlamps on page 3-17for
more information.
Be sure to clear ice and snow from the wiper blades
before using them. If they are frozen to the windshield,
gently loosen or thaw them. If the blades do become
damaged, install new blades. For more information, see
Windshield Wiper Blade Replacement on page 5-57.
Heavy snow or ice can overload the wiper motor.
A circuit breaker will stop the motor until it cools down.
Clear away snow or ice to prevent an overload.Rainsense™ Wipers
Vehicles with Rainsense™ windshield wipers, have a
moisture sensor for this feature mounted on the interior
side of the windshield behind the rearview mirror.
This sensor automatically operates the wipers by
monitoring the amount of moisture build-up on the
windshield. Wipes occur as needed to clear the
windshield depending on driving conditions and the
sensitivity setting. In light rain or snow, fewer wipes
will occur. In heavy rain or snow, wipes occur more
frequently. If the system is left on for long periods of
time, occasional wipes may occur without any moisture
on the windshield. This is normal and indicates that
the Rainsense™ system is activated.
The wiper control should be left in the off position,
unless the wiper is needed.
The Rainsense™ system is sensitive to vibration and
can activate if something hits the windshield or if
the vehicle hits a bump.
3-10

Rainsense™ windshield wipers operate in a delay
mode, as well as a continuous low or high speed as
needed. Move the wiper lever up to the delay position
and turn the band to one of ve settings.
The level one or lowest setting is at the bottom of the
band. This setting lets more rain or snow collect on the
windshield between wipes. Turn the delay band forward
to a higher setting to let less rain or snow collect on
the windshield between wipes.
The top position is the highest setting. A single wipe
occurs each time the delay band is turned to a higher
setting to indicate that the Rainsense
®level has
been increased.
Notice:Going through an automatic car wash with
the wipers on can damage them. Turn the wipers
off when going through an automatic car wash.The mist and wash cycles operate as normal and
are not affected by the Rainsense™ function.
The Rainsense™ system can be overridden at any
time by manually changing the wiper control to low or
high speed. The system will default to normal time delay
operation if the Rainsensor detects something that
would affect Rainsense™ operation.
When Rainsense™ is active, the headlamps turn
on automatically. If it is dark, they remain on.
See “Wiper-Activated Headlamps” underWiper
Activated Headlamps on page 3-17for more
information.
Notice:Do not place stickers or other items on
the exterior glass surface directly in front of
the moisture sensor. Doing this could cause the
moisture sensor to malfunction.
3-11

Light Sensor
The light sensor for the
DRL and AUTO headlamp
feature is located on
top of the instrument panel.
If the sensor is covered, it will prevent it from sensing
light, and the exterior lamps or the Headlamps
Suggested message will appear on the DIC whenever
the ignition is on.
Adaptive Forward Lighting System
The Adaptive Forward Lighting System (AFL) swivels
the headlamps horizontally to provide greater road
illumination while turning. AFL will operate when
the vehicle speed is greater than 2 mph (3 km/h).
AFL will not operate when the transmission is in
REVERSE (R). AFL is not immediately operable afterstarting the vehicle; driving a short distance is required
to calibrate the AFL. To enable AFL, set the exterior
lamp switch on the multifunction lever to the AUTO
position. Moving the switch out of the AUTO position will
deactivate the system. SeeHeadlamps on page 3-17.
Fog Lamps
Use the fog lamps for better vision in foggy or misty
conditions.
The fog lamp control is located on the turn
signal/multifunction lever.
-(Fog Lamps):Turn the fog lamp band on the lever
up to
-and release it, to turn the fog lamps on or
off. The band will return to its original position.
The parking lamps must be on for the fog lamps to work.
If the high-beam headlamps are turned on, the fog
lamps will also turn off. They will turn back on again
when you switch back to low-beam headlamps.
Some localities have laws that require the headlamps to
be on along with the fog lamps.
3-19

Exterior Lighting Battery Saver
The exterior lamps turn off about 10 minutes after the
ignition is turned to LOCK/OFF, if the parking lamps
or headlamps have been left on. This protects against
draining the battery. The battery saver does not
work if the headlamps are turned on after the ignition
is turned to LOCK/OFF.
To keep the lamps on for more than 10 minutes, turn
the lamps back on with the exterior lamp control.
Instrument Panel Brightness
The knob with this symbol
is located on the instrument
panel to the left of the
steering column.
Turn the knob clockwise or counterclockwise to brighten
or dim the lights.
Turn the knob completely clockwise to turn on the
interior lamps.
Entry Lighting
The entry lighting system turns on the reading and
dome lamps and the backlighting to the exterior lamp
control, when a door is opened or if the transmitter
unlock button is pressed. If activated by the transmitter,
the lighting stays on for about 25 seconds. The entry
lighting system uses the light sensor on the instrument
panel; so it must be dark outside in order for the
lamps to turn on. The lamps turn off about 25 seconds
after the last door is closed. They dim then turn
off if the ignition key is turned to ON/RUN. They
immediately turn off if the power locks are used.
Parade Dimming
This feature does not let the instrument panel backlight
dim during daylight hours while the key is in the
ignition and the headlamps are on. Parade dimming
automatically works with the light sensor, located on top
of the dashboard. If it is dark enough outside and the
parking lamps are on, the backlight on the instrument
panel can be adjusted by turning the instrument panel
brightness knob clockwise or counterclockwise to
brighten or dim the lighting. SeeInstrument Panel
Brightness on page 3-20.
3-20