2003 CADILLAC DEVILLE fuses

If you activate the alarm by accident, unlock the driver's
door with your key. You can also turn off the alarm by
using the unlock button on the remote keyless entry
transmitter system, or by starting the car with a valid key.
Changes or modi®cations made to this system by other
than an authorized service facility could void
authorization to use the theft system.
Testing the Alarm
1. From inside the vehicle, roll down the window, then
get out of the vehicle, keeping the door open.
2. From outside of the vehicle, with the door open, lock
the vehicle using the power door lock or the remote
keyless entry system and close the door. Wait 30
seconds until the SECURITY lamp goes off.
3. Reach in and unlock the door using the manual
lock and open the door. The horn will sound and
the hazard lights will ¯ash.
You can turn off the alarm by unlocking the driver's door
with your key, using the unlock button on the remote
keyless entry transmitter or by starting the car with
a valid key.
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, see
Fuses and Circuit Breakers on
page 5-94. 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.
Press the switch to ON to disable the use of the trunk,
fuel door, garage door opener and optional cellular
telephone. The remote keyless entry transmitter cannot
open the trunk if the valet lockout switch is in ON.
Press this switch to OFF to enable the use of the trunk,
fuel door, garage door opener and optional cellular
telephone.
Locking the glove box with your key will also help to
secure your vehicle.
2-20

If the engine does not start, and the key appears to be
undamaged, try another ignition key. At this time,
you may also want to check the fuse. See
Fuses and
Circuit Breakers on page 5-94. If the engine still
does not start with the other key, your vehicle needs
service. If your vehicle does start, the ®rst key may be
faulty. See your dealer who can service the PASS-Key
ž
III to have a new key made.
It is possible for the PASS-Key
žIII decoder to learn the
transponder value of a new or replacement key. Up to 10
additional keys may be programmed for the vehicle. This
procedure is for learning additional keys only.
Canadian Owners:If you lose or damage your keys,
only a GM dealer can service PASS-Key
žIII to
have new keys made. To program additional keys you
will require two current driver's keys (black in color). You
must add a step to the following procedure. After
Step 2, repeat Steps 1 and 2 with the second current
driver's key. Then continue with Step 3.
To program the new key do the following:
1. Verify that the new key has PK3 stamped on it.
2. Insert the current driver's key in the ignition
and start the engine. If the engine will not start see
your dealer for service.
3. After the engine has started, turn the key to OFF,
and remove the key.4. Insert the key to be programmed and turn it to ON
within 10 seconds of removing the previous key.
5. The SECURITY light will turn off once the key has
been programmed. It may not be apparent that the
SECURITY light went on due to how quickly the
key is programmed.
6. Repeat the Steps 1 through 4 if additional keys are
to be programmed.
If you are ever driving and the SECURITY light comes
on and stays on, you will be able to restart your
engine if you turn it off. Your PASS- Key
žIII system,
however, is not working properly and must be serviced
by your dealer. Your vehicle is not protected by the
PASS-Key
žIII system at this time.
If you lose or damage a PASS-Key
žIII key, your dealer
to have a new key made.
In an emergency, contact Cadillac Roadside Assistance.
See
Roadside Service on page 7-6.
2-22

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 and in the
outside rearview mirror 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 when it's released.
If the turn signal is left on, a warning chime will sound and
the Driver Information Center (DIC) will display TURN
SIGNAL ON after driving about a mile to remind you to
turn it off.
Arrows that ¯ash rapidly when signaling for a turn or lane
change may be caused by a burned out signal bulb.
Other drivers won't see the turn 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. See
Fuses and
Circuit Breakers on page 5-94.
Headlamp High/Low-Beam Changer
Push forward to change the headlamps from low beam
to high. Pull the lever back and then release it to
change from high beam to low.
This light on the instrument
panel cluster will be on,
indicating high-beam
usage.
Flash-To-Pass
This feature lets you use the high-beam headlamps to
signal the driver in front of you that you want to pass.
Pull and hold the turn signal lever toward you
to use. When you do, the following will occur:
·If the headlamps are either off or in the Daytime
Running Lamps (DRL) mode, the high-beam
headlamps will turn on. They'll stay on as long as
you hold the lever there. Release the lever to
turn them off.
·If the headlamps are on high beam, they will switch
to low beam. To return to high beam, push the
lever away from you.
3-9

Accessory Power Outlets
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.
If you have a vehicle with a center storage compartment
located on the instrument panel, you may have an
accessory power outlet in the storage drawer. There is
also an outlet on the front passenger's seat near
the umbrella tray.
There are two accessory power outlets in the rear seat
area located on the door armrests next to the ashtrays.
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.
The accessory power outlet will only operate when the
ignition is in ACCESSORY or ON and for 10 minutes
after turning the ignition OFF. If you would like the
accessory power outlet to operate regardless of ignition
position, and for extended periods of time, see your
dealer for more information.
Notice:When using an accessory power outlet,
maximum electrical load must not exceed amperage
rating. Always turn off any electrical equipment
when not in use. Leaving electrical equipment on for
extended periods will drain your battery.
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 some electrical equipment to your
vehicle can damage it or keep other things from
working as they should. This wouldn't be covered by
your warranty. Check with your dealer before
adding electrical equipment, and never use anything
that exceeds the amperage rating.
Follow the proper installation instructions that are
included with any electrical equipment you install.
Notice:Power outlets are designed for accessory
plugs only. Do not hang any type of accessory
or accessory bracket from the plug. Improper use of
the power outlet can cause damage not covered
by your warranty.
3-27

Uniform Tire Quality Grading..........................5-67
Wheel Alignment and Tire Balance..................5-68
Wheel Replacement......................................5-69
Tire Chains..................................................5-70
If a Tire Goes Flat........................................5-71
Changing a Flat Tire.....................................5-72
Compact Spare Tire......................................5-83
Appearance Care............................................5-84
Cleaning the Inside of Your Vehicle.................5-84
Care of Safety Belts......................................5-87
Weatherstrips...............................................5-87
Cleaning the Outside of Your Vehicle..............5-88
Sheet Metal Damage.....................................5-90
Finish Damage.............................................5-90
Underbody Maintenance................................5-90Chemical Paint Spotting.................................5-90
Vehicle Care/Appearance Materials..................5-91
Vehicle Identi®cation......................................5-92
Vehicle Identi®cation Number (VIN).................5-92
Service Parts Identi®cation Label.....................5-93
Electrical System............................................5-93
Add-On Electrical Equipment..........................5-93
Headlamp Wiring..........................................5-93
Windshield Wiper Fuses................................5-93
Power Windows and Other Power Options.......5-93
Fuses and Circuit Breakers............................5-94
Removing the Rear Seat Cushion...................5-96
Capacities and Speci®cations........................5-101
Normal Maintenance Replacement Parts.........5-103
Section 5 Service and Appearance Care
5-2

A. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-37.
B. Underhood Fuse Block. See ªUnderhood Fuse
Blockº under
Fuses and Circuit Breakers on
page 5-94.
C. Engine Coolant Surge Tank and Pressure Cap. See
Coolant Surge Tank Pressure Cap on page 5-27andCooling System on page 5-30.
D. Power Steering Fluid. See
Power Steering Fluid on
page 5-36.
E. Engine Oil Fill Cap. See
Engine Oil on page 5-13.
F. Engine Oil Dipstick. See
Engine Oil on page 5-13.
G. Brake Master Cylinder. See
Brakes on page 5-38.
H. Transaxle Fluid Cap and Dipstick. See
Automatic
Transaxle Fluid on page 5-21.
I. Engine Air Cleaner/Filter. See
Engine Air
Cleaner/Filter on page 5-19.
Engine Oil
If the CHECK OIL LEVEL message appears on the
instrument cluster, it means you need to check
your engine oil level right away. For more information,
see ªCHECK OIL LEVELº under
DIC Warnings and
Messages on page 3-60.
You should check your engine oil level regularly; this is
an added reminder.
5-13

Service Parts Identi®cation Label
You'll ®nd this label on the under side of the spare tire
cover in the trunk. It's very helpful if you ever need
to order parts. On this label is:
·your VIN,
·the model designation,
·paint information and
·a list of all production option and special equipment.
Be sure that this label is not removed from the
vehicle.
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 air bag system. Before attempting
to add anything electrical to your vehicle, see
Servicing Your Air Bag-Equipped Vehicle on page 1-59.
Headlamp Wiring
The headlamp wiring system has four individual fuses,
LF low, RF low, LF high and RF high. 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.
A fuse powers the wiper motor. If the fuse blows, there
is an electrical problem. Be sure to have it ®xed.
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.
5-93

Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. 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 ªborrowº one that has the
same amperage. 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 two fuse blocks, one located in
the engine compartment on the passenger's side and
the other under the rear seat on the driver's side.
If a fuse should blow, have your vehicle serviced by
your dealer immediately.
Underhood Fuse Block
The underhood fuse block
is located next to the
engine on the passenger's
side of the vehicle. For
more information on
location, see
Engine
Compartment Overview on
page 5-12
.
To access the fuses, push in the two tabs located at
each end of the fuse block cover. Then lift the cover off.
Fuse 22 or 23 can be moved to the outer position to
enable the accessory power outlets or cigarette lighter
when the ignition is not on. See your dealer for
additional assistance, if needed.
5-94