2006 CADILLAC STS engine oil

Engine Coolant Heater
Your vehicle may be equipped with an engine coolant
heater.
In very cold weather, 0°F (−18°C) or colder, the engine
coolant heater can help. You will get easier starting
and better fuel economy during engine warm-up.
Usually, the coolant heater should be plugged in a
minimum of four hours prior to starting your vehicle.
At temperatures above 32°F (0°C), use of the coolant
heater is not required. Your vehicle may also have an
internal thermostat in the plug end of the cord. This will
prevent operation of the engine coolant heater when
the temperature is at or above 0°F (−18°C) as noted
on the cord.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
For the 3.6L V6 engine, the cord is located in
the engine compartment on the passenger’s side of
the vehicle in front of the fuse block.
For the 4.6L V8 engine, the cord is located in the
engine compartment on the driver’s side of the
vehicle near the inner fender and above the strut.
For the 4.4L V8 engine, the cord is located in
the front of the engine compartment, on the
passenger’s side of the vehicle. The plug will be
inside the upper grille cutout.3. You must remove the plastic cap to access
the plug.
4. Plug it into a normal, grounded 110-volt AC outlet.
{CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the
wrong kind of extension cord could overheat
and cause a re. You could be seriously
injured. Plug the cord into a properly grounded
three-prong 110-volt AC outlet. If the cord will
not reach, use a heavy-duty three-prong
extension cord rated for at least 15 amps.
5. Before starting the engine, be sure to unplug and
store the cord as it was before to keep it away from
moving engine parts. If you do not, it could be
damaged.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature,
the kind of oil you have, and some other things. Instead
of trying to list everything here, we ask that you contact
your dealer in the area where you will be parking your
vehicle. The dealer can give you the best advice for that
particular area.
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Low Tire Pressure Warning Light....................3-65
Traction Control System (TCS) Warning Light . . .3-66
Engine Coolant Temperature Warning Light......3-66
Engine Coolant Temperature Gage..................3-67
Malfunction Indicator Lamp.............................3-67
Oil Pressure Light.........................................3-70
Security Light...............................................3-71
Fog Lamp Light............................................3-71
Lights On Reminder......................................3-71
Cruise Control Light......................................3-72
Highbeam On Light.......................................3-72
Fuel Gage...................................................3-72
Driver Information Center (DIC).......................3-73
DIC Controls and Displays.............................3-74
DIC Warnings and Messages.........................3-79
Other Messages...........................................3-93Audio System(s).............................................3-94
Setting the Time...........................................3-95
Radio with CD..............................................3-96
Navigation/Radio System..............................3-115
Radio Personalization..................................3-115
Theft-Deterrent Feature................................3-119
Audio Steering Wheel Controls......................3-119
Radio Reception.........................................3-120
Care of Your CDs.......................................3-121
Care of the CD Player.................................3-122
Diversity Antenna System.............................3-122
XM™ Satellite Radio Antenna System............3-122
Section 3 Instrument Panel
3-2

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 2-24. 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.
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 your
battery or if your 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 GM 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.
3-70

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.
Security Light
For information regarding
this light, see
Theft-Deterrent System on
page 2-21.
Fog Lamp Light
The fog lamps light will
come on when the fog
lamps are in use.
The light will go out when the fog lamps are turned off.
SeeFog Lamps on page 3-37for more information.
Lights On Reminder
This light comes on
whenever the parking
lamps are on.
SeeHeadlamps on Reminder on page 3-35for more
information.
3-71

DIC Controls and Displays
The Driver Information Center (DIC) has different modes
which can be accessed by pressing the four DIC
buttons located on the instrument panel, to the left of
the steering wheel.
DIC Buttons (Base Level)
If your vehicle does not
have a Head-Up Display
(HUD), these are the
buttons for your DIC.
«4ª(Information):Press the top or bottom of this
button to scroll through the available vehicle information
displays which include digital speed display, if your
vehicle has this feature, fuel range, fuel economy, fuel
used, average speed, timer, battery voltage, tire
pressure, if your vehicle has a tire pressure monitor
(TPM) system, and engine oil life, if your vehicle has
this feature.
If you have an STS-V, the DIC also has additional
vehicle information displays which include engine boost,
engine oil temperature, oil pressure, and transmission
uid temperature.
See “MPH (km)” later in this section for more information
on the digital speed display.
AB
300 (Trip Information):Press the top of this
button to scroll through the odometer, trip odometer A
and trip odometer B. Press and hold the bottom of
this button to reset each trip odometer back to zero.
4// (Reset):Press this button to reset certain DIC
features and to acknowledge DIC warning messages
and clear them from the DIC display.
EM (English/Metric):Press this button to change the
display from English to metric.
3-74

DIC Buttons (Uplevel)
If your vehicle has a HUD,
these are the buttons for
your DIC.
«4ª(Information):Press the top or bottom of this
button to scroll through the available vehicle information
displays which include digital speed display, if your
vehicle has this feature, fuel range, fuel economy, fuel
used, average speed, timer, battery voltage, tire
pressure, if your vehicle has a tire pressure monitor
(TPM) system, engine oil life, if your vehicle has this
feature, and display units. See “MPH (km)” later in this
section for more information on the digital speed display.
«~ª(Head-Up Display):Press this button to
change the position of the HUD on the windshield. Press
the top part of the button to move the HUD image up.
Press the bottom part of the button to move the
HUD image down.
To adjust the brightness of the HUD image, see
Head-Up Display (HUD) on page 3-40.
For information on adjusting the instrument panel
brightness, seeInstrument Panel Brightness on
page 3-39.
4// (Reset):Press this button to reset certain DIC
features and to acknowledge DIC warning messages
and clear them from the DIC display.
3(Trip Information):Press this button to scroll
through the odometer, trip odometer A and trip
odometer B. To reset each trip odometer, either press
the reset button or press and hold the trip information
button until the trip odometer displayed returns to zero.
3-75

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. You
should change your 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 6-4andEngine Oil on page 5-18.
After an oil change, reset the ENGINE OIL LIFE
display. To reset, seeEngine Oil Life System on
page 5-22. 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).
OIL PRESSURE (STS-V Only)
This display shows the oil pressure in either pounds per
square inch (psi) or kilopascals (kPa).
TRANS (Transmission) FLUID TEMP
(Temperature) (STS-V Only)
This display shows the transmission uid temperature in
either degrees Fahrenheit (°F) or degrees Celsius (°C).
Trip Information Display Menu Items
The following display menu items can be displayed by
pressing the trip Information button.
Odometer
Press the trip information button until the odometer
appears on the DIC display. The odometer shows the
total distance the vehicle has been driven in either
miles (mi) or kilometers (km).
3-78

If this message appears immediately after starting the
engine, it is possible that the generator can still recharge
the battery. The battery should recharge while driving
but may take a few hours to do so. Consider using
an auxiliary charger to boost the battery after returning
home or to a nal destination. Make sure you follow
the manufacturer’s instructions.
If this message appears while driving or after starting
your vehicle and stays on, have it checked immediately
to determine the cause of this problem.
To help the generator recharge the battery quickly, you
can reduce the load on the electrical system by
turning off the accessories.
The normal battery voltage range is 11.5 to 15.5 volts.
You can monitor battery voltage on the DIC by pressing
the information button until you nd BATTERY VOLTS.
CHANGE ENGINE OIL SOON
When this message displays, it means that service is
required for your vehicle. See your GM dealer. See
Engine Oil on page 5-18andScheduled Maintenance
on page 6-4for more information.
When you reset the CHANGE ENGINE OIL SOON
message by clearing it from the display, you still must
reset the engine oil life system separately. For more
information on resetting the engine oil life system, see
Engine Oil Life System on page 5-22.
CHECK BRAKE FLUID
This message will display if the ignition is on to inform
the driver that the brake uid level is low. Have the
brake system serviced by your GM dealer as soon as
possible. SeeBrake System Warning Light on page 3-64
for more information.
CHECK COOLANT LEVEL
This message will display when there is a low level of
engine coolant. Have the cooling system serviced
by your GM dealer as soon as possible. SeeEngine
Coolant on page 5-26for more information.
CHECK GAS CAP
When this message displays, the gas cap has not been
fully tightened. You should recheck the gas cap to
ensure that it is on and tightened properly.
CHECK OIL LEVEL
This message will display when the oil level is low. See
Engine Oil on page 5-18for more information on
checking your engine oil.
3-81