2009 CADILLAC DTS battery

How OnStar Service Works
The OnStar system can record and transmit vehicle
information. This information is automatically sent to
an OnStar Call Center when the OnStar button is
pressed, the emergency button is pressed, or if the
airbags or AACN system deploy. This information usually
includes the vehicle’s GPS location and, in the event of
a crash, additional information regarding the crash that
the vehicle was involved in (e.g. the direction from which
the vehicle was hit). When the Virtual Advisor feature of
OnStar Hands-Free Calling is used, the vehicle also
sends OnStar the vehicle’s GPS location so they can
provide services where it is located.
OnStar service cannot work unless the vehicle is in a
place where OnStar has an agreement with a wireless
service provider for service in that area. OnStar service
also cannot work unless the vehicle is in a place where
the wireless service provider OnStar has hired for that
area has coverage, network capacity and reception when
the service is needed, and technology that is compatible
with the OnStar service. Not all services are available
everywhere, particularly in remote or enclosed areas,
or at all times.Location information about the vehicle is only available
if the GPS satellite signals are unobstructed and
available.
The vehicle must have a working electrical system,
including adequate battery power, for the OnStar
equipment to operate. There are other problems OnStar
cannot control that may prevent OnStar from providing
OnStar service at any particular time or place. Some
examples are damage to important parts of the vehicle
in a crash, hills, tall buildings, tunnels, weather or
wireless phone network congestion.
Your Responsibility
Increase the volume of the radio if the OnStar advisor
cannot be heard. If the light next to the OnStar buttons
is red, the system may not be functioning properly.
Press the OnStar button and request a vehicle
diagnostic. If the light appears clear (no light is
appearing), your OnStar subscription has expired and
all services have been deactivated. Press the OnStar
button to conrm that the OnStar equipment is active.
2-54

Programming Universal Home
Remote — Fixed Code
For questions or help programming the Universal
Home Remote System, call 1-866-572-2728 or go to
learcar2u.com.
Most garage door openers sold before 1996 are
Fixed Code units.
Programming a garage door opener involves
time-sensitive actions, so read the entire procedure
before starting. Otherwise, the device will time out
and the procedure will have to be repeated.To program up to three devices:
1. To verify that the garage door opener is a Fixed
Code unit, remove the battery cover on the hand
held transmitter supplied by the manufacturer of
the garage door opener motor. If there are a row
of dip switches similar to the graphic above, the
garage door opener is a Fixed Code unit. If you
do not see a row of dip switches, return to the
previous section for Programming Universal Home
Remote – Rolling Code.
Your hand held transmitter can have between
eight to 12 dip switches depending on the brand of
transmitter.
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Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Horn .............................................................3-6
Tilt Wheel.....................................................3-6
Power Tilt Wheel and Telescopic
Steering Column.........................................3-7
Heated Steering Wheel...................................3-7
Turn Signal/Multifunction Lever.........................3-8
Turn and Lane-Change Signals........................3-8
Headlamp High/Low-Beam Changer..................3-9
Forward Collision Alert (FCA) System................3-9
Flash-to-Pass...............................................3-13
Windshield Wipers........................................3-13
Rainsense™ II Wipers...................................3-14
Windshield Washer.......................................3-15
Cruise Control..............................................3-16
Adaptive Cruise Control.................................3-19
Exterior Lamps.............................................3-29
Wiper Activated Headlamps............................3-32
Headlamps on Reminder................................3-33
Daytime Running Lamps (DRL).......................3-33
Fog Lamps ..................................................3-34
Cornering Lamps..........................................3-34
Exterior Lighting Battery Saver........................3-34
Instrument Panel Brightness...........................3-34Courtesy Lamps...........................................3-35
Entry Lighting...............................................3-35
Parade Dimming...........................................3-35
Reading Lamps............................................3-35
Footwell Lamps............................................3-36
Battery Load Management.............................3-36
Electric Power Management...........................3-36
Inadvertent Power Battery Saver.....................3-37
Battery Run-Down Protection..........................3-37
Accessory Power Outlet(s).............................3-38
Ashtray(s)....................................................3-39
Analog Clock...............................................3-39
Climate Controls............................................3-40
Dual Climate Control System..........................3-40
Outlet Adjustment.........................................3-46
Rear Climate Control System.........................3-46
Passenger Compartment Air Filter...................3-48
Warning Lights, Gages, and Indicators............3-50
Instrument Panel Cluster................................3-51
Speedometer and Odometer...........................3-52
Tachometer.................................................3-52
Safety Belt Reminders...................................3-53
Airbag Readiness Light..................................3-54
Passenger Airbag Status Indicator...................3-55
Charging System Light..................................3-56
Section 3 Instrument Panel
3-1

Fog Lamps
Use the fog lamps for better vision in foggy or misty
conditions.
The fog lamps button is located on the exterior lamps
control to the left of the steering column.
#(Fog Lamps):Press the exterior lamps button to
turn the fog lamps on or off. A light comes on in the
instrument panel cluster when the fog lamps are in use.
The ignition must be on for the fog lamps to work.
When the headlamps are changed to high-beam,
the fog lamps will turn off. The fog lamps come back on
again when the high-beam headlamps are turned off.
Some localities have laws that require the headlamps to
be on along with the fog lamps.
Cornering Lamps
The cornering lamps come on when the headlamps
or parking lamps are on and you signal a turn with the
multifunction lever. They provide more light for cornering.
Exterior Lighting Battery Saver
If the exterior lamp button has been left on, the exterior
lamps will turn off about 10 minutes after the ignition is
turned to LOCK/OFF and a door has been opened. This
protects against draining the battery if the headlamps
or parking lamps are accidentally left on. If you need to
leave the lamps on for more than 10 minutes, use the
exterior lamp control to turn the lamps back on after the
ignition is turned to LOCK/OFF and any door is opened.
Instrument Panel Brightness
D(Instrument Panel Brightness):This feature
controls the brightness of the instrument panel and
footwell lights, if equipped.
The button for this control is located below the exterior
lamps control.
Push the button in and release to extend the button.
Turn the button clockwise or counterclockwise to
brighten or dim the lights.
3-34

Footwell Lamps
For vehicles with footwell lamps, they are located
under the instrument panel and at the rear of the
front seats. These lamps provide soft light to the front
and rear oor areas. They dim with the instrument
panel cluster lights.
Footwell lighting brightness can be adjusted with the
instrument panel brightness control located below the
exterior lamps control. SeeInstrument Panel Brightness
on page 3-34. The footwell lights will turn off before
the instrument panel lights are at their lowest level of
brightness.
Battery Load Management
This feature monitors the vehicle’s electrical load and
determines when the battery is in a heavy discharge
condition. During times of high electrical loading, the
engine may idle at a higher revolutions per minute (rpm)
setting than normal to make sure the battery charges.
High electrical loads may occur when several of the
following are on: headlamps, high beams, fog lamps,
rear window defogger, the climate control fan at high
speeds, heated seats and engine cooling fans.If the battery continues to discharge, even with the
engine idling at a higher rpm setting, some electrical
loads will automatically be reduced. When this occurs,
the rear window defogger may take slightly longer
to clear the glass, the heated seats may not get as
warm as they usually do and the climate control fan
may cut back to a lower speed. For more battery
saving information, see “Battery Saver Active Message”
underDIC Warnings and Messages on page 3-73.
Electric Power Management
The vehicle has Electric Power Management (EPM) that
estimates the battery’s temperature and state of charge.
It then adjusts the voltage for best performance and
extended life of the battery.
When the battery’s state of charge is low, the voltage
is raised slightly to quickly bring the charge back up.
When the state of charge is high, the voltage is lowered
slightly to prevent overcharging. If the vehicle has a
voltmeter gage or a voltage display on the Driver
Information Center (DIC), you may see the voltage
move up or down. This is normal. If there is a problem,
an alert will be displayed.
3-36

The battery can be discharged at idle if the electrical
loads are very high. This is true for all vehicles.
This is because the generator (alternator) may not
be spinning fast enough at idle to produce all the
power that is needed for very high electrical loads.
A high electrical load occurs when several of the
following are on, such as: headlamps, high beams,
fog lamps, rear window defogger, climate control fan at
high speed, heated seats, engine cooling fans, trailer
loads, and loads plugged into accessory power outlets.
EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator’s output
and the vehicle’s electrical needs. It can increase engine
idle speed to generate more power, whenever needed.
It can temporarily reduce the power demands of some
accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels of
corrective action, this action may be noticeable to the
driver. If so, a Driver Information Center (DIC) message
might be displayed, such as BATTERY SAVER ACTIVE,
BATTERY VOLTAGE LOW, or LOW BATTERY. If this
message is displayed, it is recommended that the driver
reduce the electrical loads as much as possible. SeeDIC
Warnings and Messages on page 3-73.Inadvertent Power Battery Saver
This feature is designed to protect your vehicle’s battery
against drainage from the interior lamps, trunk lamp,
glove box lamp, or the garage door opener. When the
ignition is turned off, the power to these features will
automatically turn off after 10 minutes. Power will be
restored for an additional 10 minutes if any door or trunk
is opened, or the courtesy lamp switch is turned on.
Battery Run-Down Protection
This feature helps prevent the battery from being
drained, if the interior courtesy lamps, reading/map
lamps, visor vanity lamps or trunk lamp are accidentally
left on. If any of these lamps are left on, they
automatically turn off after 10 minutes, if the ignition
is off. The lamps will not come back on again until
one of the following occurs:
The ignition is turned on.
The exterior lamps control is turned off, then on
again.
The headlamps will time-out after 10 minutes, if they are
manually turned on with the ignition on or off.
3-37

Accessory Power Outlet(s)
The accessory power outlets can be used to plug in
electrical equipment, such as a cellular telephone.
If the vehicle has a center console, the power outlet is
located inside the lower storage area. There are outlets
also on the right front lower part of the driver’s seat and
under the climate control system next to the ashtray.
SeeCenter Console Storage on page 2-62.
There are two accessory power outlets in the rear seat
area located on the door armrests next to the ashtrays.
There may be a small cap that must be removed to
access the accessory power outlet. When not using
the outlet be sure to cover it with the protective cap.
The accessory power outlet can be used at any time.
Notice:Leaving electrical equipment plugged in
for an extended period of time while the vehicle is
off will drain the battery. Power is always supplied
to the outlets. Always unplug electrical equipment
when not in use and do not plug in equipment
that exceeds the maximum 20 ampere rating.Certain accessory power plugs may not be compatible
to the accessory power outlet and could result in blown
vehicle or adapter fuses. If you experience a problem
see your dealer/retailer for additional information on the
accessory power outlets.
Notice:Adding any electrical equipment to the
vehicle can damage it or keep other components
from working as they should. The repairs would
not be covered by the vehicle warranty. Do not use
equipment exceeding maximum amperage rating
of 20 amperes. Check with your dealer/retailer before
adding electrical equipment.
Follow the proper installation instructions that are
included with any electrical equipment you install.
Notice:Improper use of the power outlet can cause
damage not covered by the warranty. Do not hang
any type of accessory or accessory bracket from
the plug because the power outlets are designed
for accessory power plugs only.
3-38

Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
might begin programs to inspect the emission control
equipment on the vehicle. Failure to pass this inspection
could prevent getting a vehicle registration.
Here are some things to know to help the vehicle pass
an inspection:
The vehicle will not pass this inspection if the check
engine light is on with the engine running, or if the
key is in ON/RUN and the light is not on.
The vehicle will not pass this inspection if the
OBD II (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 the battery has recently
been replaced or if the battery has run down.
The diagnostic system is designed to evaluate
critical emission control systems during normal
driving. This can take several days of routine driving.
If this has been done and the vehicle still does
not pass the inspection for lack of OBD II system
readiness, your dealer/retailer can prepare the
vehicle for inspection.
Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is low.
The engine can become so hot that it catches re.
Someone could be burned. Check the oil as soon
as possible and have the vehicle serviced.
Notice:Lack of proper engine oil maintenance
can damage the engine. The repairs would not be
covered by the vehicle warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
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