maintenance CADILLAC STS 2007 1.G Owners Manual

Windshield Replacement
....................... 419
Windshield Wiper Blade
Replacement
..................................... 419
Tires
..................................................... 421
Appearance Care
.................................. 476
Vehicle Identication
............................. 485
Electrical System
.................................. 486
Capacities and Specications
................ 498Maintenance Schedule
.............................. 501
Maintenance Schedule
.......................... 502
Customer Assistance Information
............. 525
Customer Assistance and
Information
........................................ 526
Reporting Safety Defects
...................... 542
Index
.......................................................... 545
2

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 543.
{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.
78

Restraint System Check
Checking the Restraint Systems
Now and then, make sure the safety belt reminder
light and all your belts, buckles, latch plates,
retractors and anchorages are working properly.
Look for any other loose or damaged safety
belt system parts. If you see anything that might
keep a safety belt system from doing its job, have
it repaired. Keep safety belts clean and dry.
SeeCare of Safety Belts on page 479for more
information.
Torn or frayed safety belts may not protect you in
a crash. They can rip apart under impact forces.
If a belt is torn or frayed, get a new one right away.Also look for any opened or broken airbag covers,
and have them repaired or replaced. The airbag
system does not need regular maintenance.
Notice:If you damage the covering for the
driver’s or the right front passenger’s airbag, or
the airbag covering on the driver’s and right
front passenger’s seatback, or the side impact
airbag covering on the ceiling near the side
windows, the bag may not work properly. You
may have to replace the airbag module in the
steering wheel, both the airbag module and the
instrument panel for the right front passenger’s
airbag, the airbag module and seatback for the
driver’s and right front passenger’s
seat-mounted side impact airbags, or side
impact airbag module and ceiling covering for
the roof-mounted side impact airbag. Do not
open or break the airbag coverings.
80

Manual Operation
yNz(Mode):Pressing the mode switch and
changing the mode cancels automatic operation
and allows the operator to manually select the air
delivery location. Press AUTO to return to
automatic operation.
The outboard air outlets always receive airow
regardless of the mode selected. SeeOutlet
Adjustment on page 237to change this airow
from the outboard outlets.
To change the current mode, select one of the
following:
Y(Vent):This mode directs air to the instrument
panel outlets.
\(Bi-Level):This mode directs about half of the
air to the instrument panel outlets, and then
directs most of the remaining air to the oor
outlets. In automatic operation, cooler air is
directed to the upper outlets and warmer air to the
oor outlets.
[(Floor):This mode directs most of the air to
the oor outlets with some air directed to the
outboard outlets, and a little air directed to
the windshield and side windows.The mode switch can also be used to select the
defog mode. Information on defogging and
defrosting can be found later in this section.
yAz(Fan):Press this switch to increase or
decrease the fan speed. Pressing this switch
cancels automatic operation and allows the
operator to manually select the amount of airow.
Press AUTO to return to automatic operation.
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 239andScheduled Maintenance on
page 505.
h(Recirculation):Press this button to control
the air source for the climate control system. If
in AUTO mode, press this button once to
select recirculation. This mode keeps outside air
from coming in the vehicle and recirculates the air
in the vehicle. It can be used to prevent outside
air and odors from entering the vehicle or to
help cool the air inside the vehicle more quickly.
232

The air quality sensor does not activate due to
organic odors, like skunk, and may not activate on
many chemical-related odors. If you wish to limit
these types of odors, manually select recirculation.
Your vehicle could also have a charcoal lter that
can limit many odors from being pulled into your
vehicle. This lter, like your engines air cleaner
lter, needs to be changed periodically. See
Scheduled Maintenance on page 505. The air
quality sensor system does not protect against
carbon monoxide (CO), which you cannot see or
smell. SeeEngine Exhaust on page 125.
O(Power Driver’s Temperature):Press the
power button located on the driver’s side of
the climate control panel to turn the entire climate
control system on or off. Turn the knob to
increase or decrease the temperature inside the
vehicle.
O(Power Passenger’s Temperature):Press
the power button located on the passenger’s side
of the climate control panel to turn the passenger’s
climate control system on if they wish to have adifferent setting than the driver. Turn the knob to
increase or decrease the temperature for the
front passenger. Turning the passenger’s
side power button off will not shut off the climate
control system for the passenger. The system
is set to the same setting as the driver.
{(Ventilated Seat):Press this button, to turn on
the driver or passenger’s side ventilated seat, if
the vehicle has this feature. SeeHeated and
Ventilated Seats on page 11.
J(Heated Seat):Press this button, to turn on
the driver or passenger’s side heated seat
and seatback, if the vehicle has this feature. See
Heated and Ventilated Seats on page 11.
^(Air Conditioning):Press this button to
manually turn off the air conditioning compressor.
Press AUTO to return to automatic operation or
press the A/C OFF button again. To limit fogging on
the windshield, the air conditioning compressor
cannot be off while in the defrost mode.
234

Passenger Compartment Air Filter
Your vehicle may be equipped with a passenger
compartment air lter. There are two types of lters
available. There is a standard dust lter that
traps small particles including pollen. There is,
also, a dust/odor lter available that traps dust and
pollen and also uses a charcoal element to help
reduce many offensive odors from entering
your vehicle. Like your vehicle’s engine air
cleaner/lter, it will need to be changed
periodically. For information on how often to
change the passenger compartment air lter, see
Scheduled Maintenance on page 505.
Notice:Driving without a passenger
compartment air lter in place can cause water
and small particles, like paper and leaves, to
be pulled into your climate control system
which may cause damage to it. Make sure you
always replace the old lter with a new one.The access panel for the passenger compartment
air lter is located under the hood near the
windshield, on the passenger’s side of the vehicle.
SeeEngine Compartment Overview on page 373
for more information on location. SeeDoing
Your Own Service Work on page 364for
information on doing your own service work.
239

Malfunction Indicator Lamp
Check Engine Light
Your vehicle has a
computer which
monitors operation of
the fuel, ignition,
and emission control
systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions are at acceptable
levels for the life of the vehicle, helping to produce
a cleaner environment. The check engine light
comes on to indicate that there is a problem and
service is required. Malfunctions often will be
indicated by the system before any problem is
apparent. This may prevent more serious damage
to your vehicle. This system is also designed to
assist your service technician in correctly
diagnosing any malfunction.Notice:If you keep driving your vehicle with
this light on, after awhile, the emission controls
might not work as well, your vehicle’s fuel
economy might not be as good, and the engine
might not run as smoothly. This could lead
to costly repairs that might not be covered by
your warranty.
Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system
of your vehicle or the replacement of the
original tires with other than those of the same
Tire Performance Criteria (TPC) can affect
your vehicle’s emission controls and can cause
this light to come on. Modications to these
systems could lead to costly repairs not
covered by your warranty. This could also
result in a failure to pass a required Emission
Inspection/Maintenance test. SeeAccessories
and Modifications on page 363.
252

Did you just drive through a deep puddle of water?
If so, your vehicle’s electrical system may be wet.
The condition will usually be corrected when
the electrical system dries out. A few driving trips
should turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 365. Poor fuel
quality will cause the engine not to run as
efficiently as designed. You may notice this as
stalling after start-up, stalling when you put
the vehicle into gear, misring, hesitation on
acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is
warmed up.) This will be detected by the system
and cause the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at
least one full tank of the proper fuel to turn the
light off.
If none of the above steps have made the light
turn off, your dealer can check the vehicle.
Your dealer has the proper test equipment and
diagnostic tools to x any mechanical or electrical
problems that may have developed.Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have
or may begin programs to inspect the emission
control equipment on your vehicle. Failure to pass
this inspection could prevent you from getting a
vehicle registration.
Here are some things you need to know to help
your vehicle pass an inspection:
Your vehicle will not pass this inspection if the
check engine light is on or not working properly.
To perform a check engine light bulb check with the
keyless ignition, make sure the transmitter fob is in
the passenger compartment. SeeIgnition Positions
on page 111. Press the bottom of the Acc. button
on the instrument panel and hold the button down
for ve seconds. The instrument panel, including
the check engine light, will light up and the ignition
will be on, but the engine will not start — if you
press the bottom of the Acc. button only briey, less
than ve seconds, the accessory power mode will
be turned on, but not the ignition. After the bulb
check, be sure to press and release the Acc. button
again to turn the ignition off and avoid draining the
vehicle’s battery.
254

Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that
critical emission control systems have not been
completely diagnosed by the system. The vehicle
would be considered not ready for inspection.
This can happen if you have recently replaced the
battery or if the battery has run down. The
diagnostic system is designed to evaluate critical
emission control systems during normal driving.
This may take several days of routine driving. If you
have done this and your vehicle still does not pass
the inspection for lack of OBD system readiness,
your dealer can prepare the vehicle for inspection.
Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is
low. If you do, your engine can become so
hot that it catches re. You or others could
be burned. Check your oil as soon as
possible and have your vehicle serviced.Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
If equipped, this light
tells you if there could be
a problem with your
engine oil pressure.
This light will come on briey when you start your
engine. That is a check to be sure the light
works. If it does not come on, be sure to have it
xed so it will be there to warn you if something
goes wrong.
When the light comes on and stays on, it means
that oil is not owing through your engine properly.
You could be low on oil and you might have
some other system problem.
255

LR TIRE:This display shows the air pressure in
the driver’s side rear tire.
RR TIRE:This display shows the air pressure in
the passenger’s side rear tire.
If the tire pressure display shows dashes instead
of a value, there may be a problem with your
vehicle. If this consistently occurs, see your dealer
for service.
ENGINE OIL LIFE
If your vehicle has this display, it shows the
estimated oil life remaining. If you see
99% ENGINE OIL LIFE on the display, that means
that 99% of the current oil life remains.
When the oil life is depleted, the CHANGE
ENGINE OIL SOON message will appear on the
display. Change the oil as soon as possible.
In addition to the engine oil life system
monitoring the oil life, additional maintenance
is recommended in the Maintenance Schedule in
this manual. SeeScheduled Maintenance on
page 505andEngine Oil on page 380.After an oil change, reset the ENGINE OIL LIFE
display. To reset, seeEngine Oil Life System on
page 383. The display will show 100% ENGINE OIL
LIFE after it has been reset. Also clear the
CHANGE ENGINE OIL SOON message from the
display.
ENGLISH DISPLAY UNITS
(METRIC DISPLAY UNITS)
This display allows you to select between English
and metric units of measurement if your vehicle
has the uplevel DIC. Press the reset button
to switch between English and metric units.
Blank Line
This display shows no information.
ENGINE BOOST (STS-V Only)
This display shows a graphic that indicates the
amount of boost the engine is receiving in
either pounds per square inch (psi) or
kilopascals (kPa).
ENGINE OIL TEMPERATURE (STS-V Only)
This display shows the engine oil temperature
in either degrees Fahrenheit (°F) or degrees
Celsius (°C).
263