2006 CADILLAC STS fuses

If the alarm does not sound when it should, check to
see if the horn works. The horn fuse may be blown.
To replace the fuse, seeFuses and Circuit Breakers
on page 5-105. If the fuse does not need to be replaced,
you may need to have your vehicle serviced.
To reduce the possibility of theft, always arm the
Theft-Deterrent system when leaving your vehicle.
Valet Lockout Switch
The valet lockout switch
is located inside the
glove box.
9(Off):Press the left side of the valet lockout switch
to turn the lockout feature off. When the lockout feature
is off, you can open the trunk using either the keyless
access transmitter or the trunk release button located on
the driver’s door.
R(On):Press the right side of the valet lockout
switch to turn the lockout feature on. When the lockout
feature is turned on, the trunk cannot be unlocked with
the keyless access transmitter or the trunk release button
located on the driver’s door. If the valet lockout feature is
on it will also disable the remote start feature and the
Universal Home Remote transmitter, if equipped.
Locking the glove box with your key will also help to
secure your vehicle.
SeeKeyless Access System Operation on page 2-5and
Trunk on page 2-14for additional information.
2-23

Turn and Lane-Change Signals
To signal a turn, move the lever all the way up or down.
The lever returns automatically when the turn is
complete.
An arrow on the instrument
panel cluster will ash in
the direction of the
turn or lane change.
Raise or lower the lever until the arrow starts to ash to
signal a lane change. Hold it there until the lane
change is complete. The lever returns to its original
position when it’s released.
Arrows that ash rapidly when signaling for a turn or
lane change may be caused by a burned-out signal bulb.
Other driver’s won’t see the signal.
Replace burned-out bulbs to help avoid possible
accidents. Check the fuse and for burned-out bulbs if
the arrow fails to work when signaling a turn. SeeFuses
and Circuit Breakers on page 5-105for more
information.
Turn Signal On Chime
If the turn signal is left on for about 1 mile (1.6 km),
a warning chime will sound and the Turn Signal
On message will appear on the Driver Information
Center (DIC) display. See “Turn Signal On” underDIC
Warnings and Messages on page 3-79for more
information.
Headlamp High/Low-Beam Changer
Push forward on the turn signal/multifunction lever
to change the headlamps from low to high beam. Pull
the lever back and then release it to change from high to
low beam.
If you turn the vehicle off with the high beams on, the
next time you start your vehicle the low beams will
be on.
To re-activate high beams, pull lever toward you and
then push it forward again.
This light on the instrument
panel cluster will be on,
indicating high-beam
usage.
3-8

As light shines out from the HUD, it is possible for light
to shine back in. In rare occurrences, when the sun
is at a specic angle and position, the sun’s rays can
shine back into the HUD. When this occurs, the display
device within the HUD will be temporarily illuminated.
The event will end when the vehicle’s angle to the
sun changes.
Clean the inside of the windshield as needed to remove
any dirt or lm that reduces the sharpness or clarity
of the HUD image.
To clean the HUD, spray household glass cleaner on a
soft, clean cloth. Wipe the HUD lens gently, then dry it.
Notice:When cleaning, be careful not to scratch
the HUD or camera lenses. Do not spray glass
cleaner directly on the HUD lens because the
cleaner could leak inside the unit and cause
damage.
If the ignition is on and you cannot see the HUD image,
check to see if:
Something is covering the HUD unit.
The brightness is adjusted properly.
The HUD image is adjusted to the proper height.
Ambient light in the direction your vehicle is facing
is low.
A fuse is blown. SeeFuses and Circuit Breakers on
page 5-105.
Keep in mind that your windshield is part of the HUD
system. SeeWindshield Replacement on page 5-55.
The following Adaptive Cruise Control message
may appear in the HUD:
PEDAL APPLIED ACC OVERRIDE:This message
indicates that you are pressing your foot on the
accelerator pedal and overriding Adaptive Cruise
Control. While you are doing this, the system will not
automatically apply the brakes. Once you remove your
foot from the accelerator pedal, Adaptive Cruise Control
will return to normal operation and be able to apply the
brakes, if needed.
You may also see an Adaptive Cruise Control active
symbol, alert symbol or vehicle ahead symbol. See
Adaptive Cruise Control on page 3-19for more
information.
3-43

Accessory Power Outlet(s)
Your vehicle is equipped with accessory power outlets.
The outlets can be used to plug in electrical equipment
such as a cellular telephone, CB radio, etc.
Your vehicle has one outlet in front of the center
console, one in the center console lid and there may be
an additional outlet in the rear of the center console.
Your vehicle may have a small cap that must be
removed to access the accessory power outlet. If it
does, when not using the outlet be sure to cover it
with the protective cap.
Notice:Leaving electrical equipment on for
extended periods will drain the battery. Always turn
off electrical equipment when not in use and do
not plug in equipment that exceeds the maximum
amperage 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 for additional information on
the accessory power outlets.Notice:Adding any electrical equipment to your
vehicle may damage it or keep other components
from working as they should. The repairs would not
be covered by your warranty. Do not use equipment
exceeding maximum amperage rating of 20 amperes.
Check with your 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 your 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.
3-46

Buying New Tires.........................................5-72
Different Size Tires and Wheels......................5-74
Uniform Tire Quality Grading..........................5-75
Wheel Alignment and Tire Balance..................5-76
Wheel Replacement......................................5-76
Tire Chains..................................................5-78
Lifting Your Vehicle (STS-V )..........................5-79
If a Tire Goes Flat........................................5-81
Changing a Flat Tire (STS Only).....................5-83
Removing the Spare Tire and Tools
(STS Only)...............................................5-85
Removing the Flat Tire and Installing
the Spare Tire (STS Only)..........................5-86
Storing a Flat or Spare Tire and Tools
(STS Only)...............................................5-92
Compact Spare Tire (STS Only).....................5-94
Appearance Care............................................5-94
Cleaning the Inside of Your Vehicle.................5-94
Fabric/Carpet...............................................5-96
Leather.......................................................5-96
Instrument Panel, Vinyl, and Other
Plastic Surfaces........................................5-97
Wood Panels...............................................5-97
Speaker Covers............................................5-97
Care of Safety Belts......................................5-97Weatherstrips...............................................5-97
Washing Your Vehicle...................................5-98
Cleaning Exterior Lamps/Lenses.....................5-98
Finish Care..................................................5-98
Windshield and Wiper Blades.........................5-99
Aluminum or Chrome-Plated Wheels................5-99
Tires.........................................................5-100
Sheet Metal Damage...................................5-100
Finish Damage...........................................5-101
Underbody Maintenance...............................5-101
Chemical Paint Spotting...............................5-101
Vehicle Care/Appearance Materials................5-102
Vehicle Identication.....................................5-103
Vehicle Identication Number (VIN)................5-103
Service Parts Identication Label...................5-103
Electrical System..........................................5-104
Add-On Electrical Equipment.........................5-104
Headlamp Wiring........................................5-104
Windshield Wiper Fuses...............................5-104
Power Windows and Other Power Options......5-105
Fuses and Circuit Breakers..........................5-105
Underhood Fuse Block................................5-106
Rear Underseat Fuse Block..........................5-110
Capacities and Specications........................5-116
Section 5 Service and Appearance Care
5-2

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your vehicle
unless you check with your dealer rst. Some
electrical equipment can damage your vehicle and
the damage wouldn’t be covered by your warranty.
Some add-on electrical equipment can keep other
components from working as they should.
Your vehicle has an airbag system. Before attempting to
add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-63.
Headlamp Wiring
The headlamp wiring has an individual fuse. An
electrical overload will cause the lamps to go on and off,
or in some cases to remain off. If this happens, have
the headlamp wiring checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
circuit breaker. If the wiper motor overheats due to
heavy snow, the wipers will stop until the motor cools
and will then restart.
5-104

Power Windows and Other
Power Options
Circuit breakers protect the power windows and power
seats. When the current load is too heavy, the circuit
breaker opens and closes, protecting the circuit until the
problem is xed or goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and fusible thermal links. This greatly reduces the
chance of res caused by electrical problems.Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating. If a fuse should blow, see your dealer
for service immediately.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage. Just pick some feature of your vehicle
that you can get along without — like the radio or
cigarette lighter — and use its fuse, if it is the correct
amperage. Replace it as soon as you can.
The fuses are located in three fuse blocks. One is
located in the engine compartment, on the passenger’s
side of the vehicle, and the other two are located
under the rear seat on both the driver’s and passenger’s
side of the vehicle.
5-105

The underhood fuse block is located in the front of the
engine compartment on the passenger’s side of the
vehicle. SeeEngine Compartment Overview on
page 5-12for more information on location, and removal
procedure for the front compartment underhood sights
shields.
To access the fuses, push in the tabs located on each
side of the fuse block cover. Then, lift the cover off.
Fuses Usage
BLOWER Blower Motor
R REAR Passenger’s Side Rear Fuse Block
I/P OUTLET Front Accessory Power Outlet
CCP Climate Control, Headlamp Leveling
PRE 02/CAM Oxygen Sensor, Camshaft Phasers
ENG W/H Engine Wiring Harness
R REAR Passenger’s Side Rear Fuse Block
WPR SW Wiper/Washer Switch
BODY W/H Body Wiring Harness
FOG LAMP Fog Lamps
OUTLET Rear Accessory Power Outlet
Fuses Usage
EVEN COILSEven Ignition Coils, Even Fuel
Injectors
L REAR Driver’s Side Rear Fuse Block
WPR MOD Wiper Module
POST 02 Oxygen Sensor
COMP CLTCH Air Conditioner Compressor Clutch
STARTER Starter Solenoid
ABS Anti-lock Brake Pump
L REAR Driver’s Side Rear Fuse Block
BODY W/H Body Wiring Harness
RAIN SSRRain Sensor, Headlamp Washer,
Tire Pressure Monitor
CCP Climate Control
SMT BM-OPT IntelliBeam™ Relay (If Equipped)
EXT LIGHTSLow Beam Relay, High Beam Relay,
Park Lamp Relay
VOLT CHECK Instrument Panel Module
5-107