2009 CADILLAC STS sensor

Sensors
The solar sensor located on the instrument panel, near
the windshield, monitors the solar heat.
The interior temperature sensor located on the
instrument panel to the right of the steering wheel,
measures the temperature of the air inside the vehicle.
The climate control system uses the information
from these sensors to adjust the temperature, the fan
speed and the air delivery, in order to maintain the
selected temperature. The system may also supply
cooler air to the side of the vehicle facing the sun.
Do not cover the sensors or the automatic climate
control system will not work properly.
Outlet Adjustment
Use the lever located in the center of each outlet to
change the direction of the airow, either side-to-side or
up and down. Use the thumbwheels to open or close
the outlets to adjust the airow.
Turn the thumbwheel towards the vehicle door to open
the outlets and allow the maximum amount of air to
enter your vehicle. Turn the thumbwheel towards
the center console to close the outlets and minimize
the amount of air entering the vehicle.
Operation Tips

Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the ow of air into your vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
If the airow seems low when the fan speed is at
the highest setting, the passenger compartment air
lter may need to be replaced. For more information,
seePassenger Compartment Air Filter on page 3-54.
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Passenger Safety Belt Reminder Light
Several seconds after the engine is started,
a chime sounds for several seconds to remind
the front passenger to buckle their safety belt.
This only occurs if the passenger airbag is enabled.
SeePassenger Sensing System on page 1-59for more
information. The passenger safety belt light, located
on the instrument panel, comes on and stays on for
several seconds and then ashes for several more.
This chime and light are
repeated if the passenger
remains unbuckled and
the vehicle is in motion.
If the passenger safety belt is buckled, neither the
chime nor the light comes on.
Airbag Readiness Light
The system checks the airbag’s electrical system for
possible malfunctions. If the light stays on it indicates
there is an electrical problem. The system check includes
the airbag sensor, the pretensioners, the airbag modules,
the wiring and the crash sensing and diagnostic module.
For more information on the airbag system, seeAirbag
System on page 1-51.
The airbag readiness light
ashes for a few seconds
when the engine is
started. If the light does
not come on then, have
it xed immediately.
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RADAR CRUISE NOT READY
This message displays when the Adaptive Cruise
Control system is not activating due to a temporary
condition. Your vehicle does not require service.
This message also displays when either of the
following conditions occur:
The driver turns off the head-up display (HUD)
while the Adaptive Cruise Control is engaged.
The driver attempts to engage the Adaptive Cruise
Control while the HUD is off.
If this message appears when attempting to activate the
system, continue driving for several minutes and then
try activating the system again.
RIGHT REAR DOOR AJAR
This symbol appears with
this message.
This message displays when the passenger side rear
door is not closed completely. Make sure that the door is
closed completely.
SERVICE AC (Air Conditioning)
SYSTEM
This message displays when the electronic sensors that
control the air conditioning and heating systems are
no longer working. Have the climate control system
serviced by your dealer/retailer if a drop in heating
and air conditioning efficiency is noticeable.
SERVICE AIR BAG
This message displays if there is a problem with the
airbag system. Have your vehicle serviced by your
dealer/retailer immediately. SeeAirbag Readiness
Light on page 3-58for more information.
SERVICE BRAKE ASSIST
This message displays when a problem with the panic
brake assist system has been detected. Have your
vehicle serviced by your dealer/retailer.
SERVICE LANE DEPARTURE SYSTEM
If your vehicle has the Lane Departure Warning (LDW)
system, this message may display to indicate that the
LDW system is not working properly. If this message
remains on after continued driving, the system needs
service. See your dealer/retailer. See the Index in the
Navigation manual for more information.
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SERVICE THEFT SYSTEM
This message displays when there is a problem with the
hood open and closed switches. The switches may need
to be replaced. When this message is displayed, the
theft-deterrent system will still be protecting the interior of
the vehicle, however, the hood area will not be protected
at this time. Also, the remote start function will not work
when this message appears. See your dealer/retailer for
service.
SERVICE TRANSMISSION
This message displays when there is a problem with
the transmission. Have your vehicle serviced by
your dealer/retailer.
SERVICE VEHICLE SOON
This message displays when a non-emissions related
malfunction occurs. Have your vehicle serviced by your
dealer/retailer as soon as possible.
SIDE BLIND ZONE ALERT
SYSTEM OFF
If your vehicle has the Side Blind Zone Alert (SBZA)
system, this message displays when the SBZA system
has been turned off. SeeSide Blind Zone Alert (SBZA) on
page 2-44andDIC Operation and Displays on page 3-72
for more information.
SIDE BLIND ZONE SYSTEM
UNAVAILABLE
If your vehicle has the Side Blind Zone Alert (SBZA)
system, this message displays when the SBZA system
is disabled because the sensor is blocked and cannot
detect vehicles in your blind zone. The sensor may be
blocked by mud, dirt, snow, ice, or slush. This message
may also display during heavy rain or due to road spray.
Your vehicle does not need service. For cleaning
instructions, seeWashing Your Vehicle on page 5-118.
SeeSide Blind Zone Alert (SBZA) on page 2-44for more
information.
SPEED LIMIT: XXX MPH (KM/H)
This message displays when the Speed Alert has been
turned on through the DIC Information Menu and the
vehicle is at or above the speed limit. SeeDIC Operation
and Displays on page 3-72for more information.
SPEED LIMITED TO XXX
This message displays when the vehicle speed is
limited to XXX, mph in English mode and km/h in
Metric mode, because the vehicle detects a problem
in the steering, stability control, or suspension system.
Have your vehicle serviced by your dealer/retailer.
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STABILITY COMPETITIVE MODE
If your All-Wheel Drive (AWD) vehicle has the Active
Steering with Enhanced StabiliTrak option, this message
displays when the Competitive Mode for stability control
has been turned on using the TC (traction control) button.
SeeEnhanced StabiliTrak
®on page 4-6for more
information. When the Enhanced StabiliTrak Competitive
Mode has been activated, traction control operates in
competitive mode and cannot be turned off. Also, the
Active Steering and the Magnetic Ride Control systems
operate in the Performance Mode. For more information,
see “Active Steering and Magnetic Ride Control” in the
Index in the Navigation manual.
STABILITY SECURE MODE
If your All-Wheel Drive (AWD) vehicle has the Active
Steering with Enhanced StabiliTrak option, this message
displays when the stability control system is in the
secure mode. Stability Secure Mode is set automatically
when certain system faults or vehicle conditions are
detected. When the Stability Secure Mode is activated,
the stability control system will not respond to driver
requests to change the stability mode until the next
ignition cycle or until the vehicle condition or fault
is returned to normal. SeeEnhanced StabiliTrak
®
on page 4-6for more information.
STABILITY SYS (System) ACTIVE
This message displays any time the StabiliTrak system
or Enhanced StabiliTrak system is actively assisting
with directional control of the vehicle. Slippery road
conditions may exist when this message is displayed,
so adjust your driving accordingly. This message
may stay on for a few seconds after StabiliTrak
stops assisting with directional control of the vehicle.
SeeStabiliTrak
®System on page 4-6orEnhanced
StabiliTrak®on page 4-6for more information.
STABILITY SYS (System) NOT READY
This message displays if the StabiliTrak system is
not ready. Two conditions may cause this message
to display:
The vehicle needs to be driven in a straight line
until the sensors are centered. Once the sensors
are centered, the StabiliTrak system is ready
and the STABILITY SYS READY message displays.
The system needs to warm up. This may occur
when rst starting your vehicle and driving away
during cold winter weather. This is normal.
To acknowledge this message, press the
reset button.
The StabiliTrak performance is affected until the
STABILITY SYS READY message is displayed in the
DIC. SeeStabiliTrak
®System on page 4-6for more
information.
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If a tire goes at, you will not need to stop on the side of
the road to change the tire. You can just keep on driving.
The vehicle’s run-at tires can operate effectively with no
air pressure for up to 50 miles (80 km) at speeds up to
55 mph (90 km/h). The shorter the distance you drive and
the slower the speed, the greater the chance that the tire
will not have to be replaced. When a tire is lled with air,
it provides a cushion between the road and the wheel.
Because you will not have this cushion when driving on
a deated run-at tire, try to avoid potholes that could
damage your wheel and require replacement of it.
Some road hazards can damage a tire beyond repair.
This damage could occur even before you have driven
on the tire in a deated condition. When a tire has been
damaged, or if you have driven any distance on a
deated run-at tire, check with an authorized run-at
tire service center, as soon as possible, to determine
whether the tire can be repaired or should be replaced.
To maintain your vehicle’s run-at feature, all
replacement tires must be self-supporting tires.
To locate the nearest GM or authorized run-at
servicing facility, call Roadside Service. See
Roadside Service on page 7-7for details.
{CAUTION:
Run-at tires are constructed differently than other
tires and could explode during improper service.
You or others could be injured or killed if you
attempt to repair, replace, dismount, or mount a
run-at tire. Let only an authorized run-at service
center repair, replace, dismount, and mount
run-at tires.
The valve stems on your vehicle’s run-at tires have
sensors that are part of the Tire Pressure Monitor
System (TPMS). These sensors contain batteries which
are designed to last for 10 years under normal driving
conditions. See your GM dealer, if the TPMS sensors or
a wheel ever need replacement.
Notice:Using liquid sealants can damage the tire
valves and tire pressure monitor sensors in the
vehicle’s run-at tires. This damage would not be
covered by warranty. Do not use liquid sealants
in the vehicle’s run-at tires.
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When you end this high-speed driving, return the tires
to the cold ination pressure shown on the Tire and
Loading Information label. SeeLoading the Vehicle
on page 4-24.
Example:
You will nd the maximum load and ination pressure
molded on the tire’s sidewall, in small letters, near the rim
ange. It will read something like this: Maximum load
690 kg (1521 lbs) 300 kPa (44 psi) Max. Press.
For this example, you would set the ination pressure
for high-speed driving at 38 psi (265 kPa).
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio
and sensor technology to check tire pressure levels.
The TPMS sensors monitor the air pressure in your
vehicle’s tires and transmit tire pressure readings to a
receiver located in the vehicle.Each tire, including the spare (if provided), should be
checked monthly when cold and inated to the ination
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire ination pressure label.
(If your vehicle has tires of a different size than the
size indicated on the vehicle placard or tire ination
pressure label, you should determine the proper
tire ination pressure for those tires.)
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system (TPMS)
that illuminates a low tire pressure telltale when one
or more of your tires is signicantly under-inated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires as
soon as possible, and inate them to the proper pressure.
Driving on a signicantly under-inated tire causes the
tire to overheat and can lead to tire failure. Under-ination
also reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
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Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor System
(TPMS). The TPMS is designed to warn the driver when
a low tire pressure condition exists. TPMS sensors are
mounted onto each tire and wheel assembly, excluding
the spare tire and wheel assembly, if the vehicle has one.
The TPMS sensors monitor the air pressure in the
vehicle’s tires and transmits the tire pressure readings to
a receiver located in the vehicle.
When a low tire pressure
condition is detected, the
TPMS illuminates the low
tire pressure warning light
located on the instrument
panel cluster.
At the same time a message to check the pressure in
a specic tire appears on the Driver Information Center
(DIC) display. The low tire pressure warning light and the
DIC warning message come on at each ignition cycle
until the tires are inated to the correct ination pressure.
Using the DIC, tire pressure levels can be viewed by
the driver. For additional information and details about
the DIC operation and displays seeDIC Operation and
Displays on page 3-72andDIC Warnings and Messages
on page 3-79.The low tire pressure warning light may come on in
cool weather when the vehicle is rst started, and then
turn off as you start to drive. This could be an early
indicator that the air pressure in the tire(s) are getting
low and need to be inated to the proper pressure.
A Tire and Loading Information label, attached to
your vehicle, shows the size of your vehicle’s original
equipment tires and the correct ination pressure for
your vehicle’s tires when they are cold. SeeLoading
the Vehicle on page 4-24for an example of the Tire and
Loading Information label and its location on your vehicle.
Also seeInflation - Tire Pressure on page 5-64.
Your vehicle’s TPMS can warn you about a low tire
pressure condition but it does not replace normal
tire maintenance. SeeTire Inspection and Rotation
on page 5-71andTires on page 5-54.
Notice:Using non-approved tire sealants could
damage the Tire Pressure Monitor System (TPMS)
sensors. TPMS sensor damage caused by using
an incorrect tire sealant is not covered by the
vehicle warranty. Always use the GM approved
tire sealant available through your dealer/retailer.
Your vehicle, when new, included a factory-installed
Tire Inator Kit. This kit uses a GM approved liquid tire
sealant. Using non-approved tire sealants could damage
the TPMS sensors. SeeTire Sealant and Compressor Kit
on page 5-87for information regarding the inator kit
materials and instructions.
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