2009 CADILLAC XLR sensor

There is also a sensor located behind the front bumper.
This sensor reads the outside air temperature and
helps maintain the temperature inside the vehicle.
The outside temperature will be displayed in the
navigation system only when the engine is running.
Any cover on the front of the vehicle could give a false
reading of the temperature.
If the outside temperature goes up, the display
temperature will not change until:
The vehicle’s speed is above 15 mph (24 km/h)
for ve minutes.
The vehicle’s speed is above 32 mph (51 km/h)
for two and one-half minutes.
These delays prevent false readings. If the temperature
goes down, the outside temperature will be shown
when the vehicle is started. If it has been turned off for
less than three hours, the temperature will be recalled
from the previous vehicle operation.
There is also an inside temperature sensor located to
the left of the ignition button. The automatic climate
control system uses this sensor to receive information,
so if it is blocked or covered, the system will not
function properly.
Outlet Adjustment
Use the thumbwheel to open or close the outlets.
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 the vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the area around the base of the instrument
panel console and air path under the seats clear
of objects to help circulate the air inside of the
vehicle more effectively.
3-40

Safety Belt Reminders
Safety Belt Reminder Light
When the engine is started, a chime comes on for
several seconds to remind people to fasten their safety
belts, unless the driver’s safety belt is already buckled.
The safety belt light also
comes on and stay on for
several seconds, then
it ashes for several more.
This chime and light is repeated if the driver remains
unbuckled and the vehicle is in motion. If the driver’s
safety belt is already 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 1-38.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.
{CAUTION:
If the airbag readiness light stays on after the
vehicle is started or comes on while driving, it
means the airbag system might not be working
properly. The airbags in the vehicle might not
inate in a crash, or they could even inate
without a crash. To help avoid injury, have the
vehicle serviced right away.
If there is a problem with the airbag system, an airbag
Driver Information Center (DIC) message can also come
on. SeeDIC Warnings and Messages on page 3-60
for more information.
3-44

NO FOB, OFF OR RUN?
This message displays when a keyless access
transmitter is not detected inside the vehicle while
you are trying to turn the ignition off. The vehicle may
be near a strong radio antenna signal causing the
keyless access system to be jammed. The vehicle will
remain in ACCESSORY until the vehicle is turned off or
is restarted, or ve minutes has expired. If you turn
the ignition off and you cannot nd the keyless access
transmitter, you will not be able to restart the vehicle.
The keyless access transmitter needs to be inside of the
vehicle in order for the vehicle to start. SeeStarting
the Engine on page 2-26for more information.
OVER SPEED WARNING
This message displays when the vehicle speed exceeds
a certain limit as required by some export countries.
A chime sounds when this message is displayed.
PRESS BRAKE TO START
This message displays to inform you that the brake
pedal must be applied to start the vehicle. Make sure
you are pressing the brake pedal all the way down.
REDUCED ENGINE POWER
This message displays when the vehicle is reducing
engine power because the transmission is being placed
in gear under conditions that may cause damage to the
vehicle’s engine, transmission, or ability to accelerate.
Reduced engine power can affect the vehicle’s ability to
accelerate. If this message is on, but there is no reduction
in performance, proceed to your destination. The
performance may be reduced the next time the vehicle is
driven. The vehicle may be driven at a reduced speed
while this message is on, but acceleration and speed may
be reduced. Anytime this message stays on, the vehicle
should be taken to your dealer/retailer for service as soon
as possible.
RIGHT DOOR AJAR
This message displays anytime the engine is running,
the transmission is not in P (Park), and the passenger
door is open or ajar. A chime sounds if the vehicle’s
speed is greater than 3 mph (5 km/h).
SERVICE A/C
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 you notice a drop in
heating and air conditioning efficiency.
3-66

INTRUSION SENSOR OFF
SeeTheft-Deterrent System on page 2-20.
INTRUSION SENSOR ON
SeeTheft-Deterrent System on page 2-20.
KNOWN FOB
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
LEFT FRONT TIRE FLAT MAX SPD 55,
REDUCED HNDLG
SeeInflation - Tire Pressure on page 6-54.
LEFT REAR TIRE FLAT MAX SPD 55,
REDUCED HNDLG
SeeInflation - Tire Pressure on page 6-54.
LOW TIRE PRESS LF
SeeInflation - Tire Pressure on page 6-54.
LOW TIRE PRESS RF
SeeInflation - Tire Pressure on page 6-54.
LOW TIRE PRESS LR
SeeInflation - Tire Pressure on page 6-54.
LOW TIRE PRESS RR
SeeInflation - Tire Pressure on page 6-54.
MAX # FOBS LEARNED
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
OFF-ACC TO LEARN
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
READY FOR FOB #X
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
RIGHT FRT TIRE FLAT MAX SPD 55,
REDUCED HNDLG
SeeInflation - Tire Pressure on page 6-54.
RIGHT REAR TIRE FLAT MAX SPD 55,
REDUCED HNDLG
SeeInflation - Tire Pressure on page 6-54.
WAIT XX MINUTES
See “Matching Transmitter(s) to Your Vehicle”
underKeyless Access System Operation on
page 2-5.
3-71

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 shorter the distance you drive and the
slower the speed, the greater the chance that the tire
will not have to be replaced. If you drive on a deated
run-at tire for 25 miles (40 km) or less and at speeds of
55 mph (90 km/h) or less, there is a good chance that
the tire can be repaired. The tire can operate effectively
with no air pressure for up to 100 miles (160 km) at
speeds up to 55 mph (90 km/h), but the tire would then
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 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 run-at
tire, check with an authorized run-at tire service center
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. As
soon as possible, contact the nearest authorized GM or
run-at servicing facility for inspection and repair orreplacement. To locate the nearest GM or run-at
servicing facility, call Roadside Assistance. For phone
numbers and Roadside Service details seeRoadside
Service on page 8-7.
{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 run-at tires have sensors that
are part of the Tire Pressure Monitor System (TPMS).
SeeTire Pressure Monitor System on page 6-55. These
sensors contain batteries which are designed to last
for 10 years under normal driving conditions. See your
dealer/retailer if you ever need to have a wheel
replaced, or if the sensors ever need replacement.
6-53

When to Check
Check your tires once a month or more.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You cannot tell if your tires are properly
inated simply by looking at them. Radial tires
may look properly inated even when they are
under-inated. Check the tire’s ination pressure
when the tires are cold. Cold means your vehicle
has been sitting for at least three hours or driven
no more than 1 mile (1.6 km).
Remove the valve cap from the tire valve stem.
Press the tire gage rmly onto the valve to
get a pressure measurement. If the cold tire
ination pressure matches the recommended
pressure on the Tire and Loading Information
label, no further adjustment is necessary. If the
ination pressure is low, add air until you reach
the recommended amount.If you overll the tire, release air by pushing on
the metal stem in the center of the tire valve.
Re-check the tire pressure with the tire gage.
Be sure to put the valve caps back on the valve
stems. They help prevent leaks by keeping out dirt
and moisture.
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.)
6-55

Federal Communications Commission
(FCC) and Industry and Science Canada
The Tire Pressure Monitor System (TPMS) operates
on a radio frequency and 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.
The TPMS operates on a radio frequency and complies
with RSS-210 of Industry and Science 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.
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 on your vehicle. 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 in the instrument
panel cluster.
6-57

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 appear 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 see
DIC Operation and Displays on page 3-57andDIC
Warnings and Messages on page 3-60.
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 5-21, for an example of the Tire and
Loading Information label and its location on your
vehicle. Also seeInflation - Tire Pressure on page 6-54
for additional information.
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 6-60,When It Is Time for New Tires on page 6-61,
andTires on page 6-46.
Notice:Liquid tire sealants could damage the Tire
Pressure Monitor System (TPMS) sensors. Sensor
damage caused by using a tire sealant is not covered
by your warranty. Do not use liquid tire sealants.
6-58