2002 CADILLAC ELDORADO fog light

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When the Twilight Sentinel lever is on and it's dark
enough outside, the high
-beam headlamps (at reduced
intensity) will turn off and normal low
-beam headlamp
operation will occur. When the Twilight Sentinel lever is
on and it's bright enough outside, the regular lamps
will go off, and the high
-beam headlamps at reduced
brightness will take over for the DRL.
If it's dark enough outside and the Twilight Sentinel
lever is off, a HEADLAMPS SUGGESTED message
will display on the Driver Information Center (DIC).
This message informs the driver that turning on the
exterior lamps is recommended even though the DRL
are still illuminated (it's become dark enough outside
to require the headlamps and/or other exterior lamps).
Turning on the Twilight Sentinel, the exterior lamp knob
or the fog lamp button will remove the HEADLAMPS
SUGGESTED message.
To idle your vehicle with the DRL off, turn off the
Twilight Sentinel lever and shift the transaxle into
PARK (P). Placing your vehicle in PARK (P) disables
the DRL. The DRL will stay off until you shift out
of PARK (P).
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Fog Lamps
Use the fog lamps for better vision in foggy or
misty conditions.
The fog lamp button is
located to the left of the
steering wheel on the
instrument panel.
When you press the button with the fog lamp symbol,
a small indicator light will tell you that the fog lamps
and the parking lamps are in use. Press the button again
to turn them off. Your ignition must be in RUN for the
fog lamps to illuminate.
If you turn on the high
-beam headlamps, the fog lamps
will turn off. They'll turn back on again when you
switch to low
-beam headlamps.
When the Twilight Sentinel is on and the fog lamp
button is pressed, the fog lamps will remain on as well
as the headlamps and parking lamps.

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Light Sensor
The light sensor for the Daytime Running Lamps (DRL)
and the Twilight Sentinel is located in the center of the
front defogger grille. If you cover the sensor, it will read
ªdarkº and the lamps will come on.
Exterior Lighting Battery Saver
If the parking lamps have been left on, the exterior lamps
will turn off approximately 10 minutes after the ignition
is turned to LOCK or ACCESSORY. This protects
against draining the battery in case you have accidentally
left the headlamps or parking lamps on. If you need to
purposely leave the lamps on for more than 10 minutes
with the ignition in LOCK or ACCESSORY, turn the
exterior lamps off and then back on. To delay the lamps
from turning off, see ªTwilight Sentinelº in the Index.
Interior Lamps
Instrument Panel Brightness Control
This feature controls the brightness of the instrument
panel lights.
The knob for this feature is located to the left of the
steering wheel on the instrument panel. This knob is also
used to control the exterior lamps. See ªExterior Lampsº
listed previously in this section for more information.
Turn the knob clockwise to brighten the lights or
counterclockwise to dim them.
Illuminated Entry
The illuminated entry system turns on the courtesy
lamps and the backlighting to the door controls and
to the exterior lamp knob when a door is opened or if
you press a remote keyless entry transmitter button.
Since the illuminated entry system has a photocell,
this means that it must be dark outside in order for the
courtesy lamps or backlighting to turn on. The courtesy
lamps turn off approximately 20 seconds after the last
door is closed or after the ignition is turned to RUN.

3-7 Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
Press the AC button or the TEMP/AUTO knob to turn
the system on and then select the proper mode to direct
airflow. The system will cool and dehumidify the air
inside the vehicle. Also while in the AUTO mode, the
system will use recirculation as necessary to cool the air.
You may also need to adjust the interior temperature and
the fan speed as needed.
When the air conditioner is on, you may sometimes
notice slight changes in your vehicle's engine speed
and power. This is normal because the system is
designed to cycle the compressor on and off to
maintain the desired temperature.
Heating
Press the MODE switch to select the heater mode.
Adjust the interior temperature to a comfortable level
and if the fan speed needs adjusting, press the up or
down arrow.
Outside air will be brought in and sent through the floor,
air conditioning or bi
-level outlets (depending on the
condition). The heater works best if you keep your
windows closed while using it.
Defogging and Defrosting
Use defrost to remove fog or ice from the windshield
quickly in extremely humid or cold conditions.
Press the MODE switch. If you select defrost mode,
adjust the fan speed by pressing the fan switch up or
down. If you select defrost mode from AUTO, the
system will control the fan speed. The temperature also
needs to be adjusted by turning the TEMP/AUTO knob.
Recirculation is not available in the defrost or defog modes.

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MaxiFuse
(8
-Way) Usage
INADVERT Inadvertent Power Relay, Interior
Lamps Fuse, Cigarette Lighter
-1
Fuse, Courtesy Lamp Relay
LAMPS Headlamps Fuse/Relay, High/Low
Beam Control Relay, Fog Lamp
Fuse, DRL Fuse, Hazard Fuse,
Mirror Fuse, Inadvertent Power
Relay, Right and Left High
-Beam
Fuse, Right and Left Low
-Beam
Fuse, Stoplamp Fuse, Fog Lamp
Relay, DRL Relay
IGN 1 Rear Ignition
-1 Relay, Wiper Fuse,
Relay Ignition
-1 Fuse, Supplemental
Inflatable Restraint (SIR) Fuse,
Accessory Relay
WINDOWS Retained Accessory Power
(RAP) Relay
SEATS Horn Relay, Driver and Passenger
Lumbar In/Out Relays, Driver and
Passenger Lumbar Up/Down RelaysMaxiFuse
(8
-Way) Usage
SPARE Spare Fuse
AIR AIR Pump
BATT 3 Steering Column Ignition Switch
BATT 2 Steering Column Ignition Switch
IGN 1 Front Ignition
-1 Relay, Oxygen
Sensor 1 and 2 Fuse, Fuel Fuse,
Cruise Fuse, Fuel Pump Relay
BATT 1 Starter Relay and Solenoid,
Park/Reverse Fuse, Park Relay,
Powertrain Control Module
(PCM) Fuse, AC Compressor
Fuse and Relay, Fan Relays,
Reverse Relay
BRAKES Anti
-Lock Brake System (ABS)
Brake Modulator
COOL FANS Cooling Fan Relays 1 and 3

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Power
Distribution
Block Usage
DRL Daytime Running Lamps (DRL)
HI/LO BEAM High and Low
-Beam Headlamps
HORN Horn
FOG LPS Fog Lamps
ACCESSORY Accessories
HEAD LPS Headlamps
Relays
INADVERT POWER RELAY
IGN 1 RELAY
STARTER RELAY
AIR RELAY
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 fires
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 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.
There are two fuse blocks in your vehicle: the underhood
fuse block and the rear compartment fuse block.

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Fuse Usage
CIG LTR1 Front and Rear Cigarette Lighters
SPARE Spare Fuse
L HDLP LO Left Low
-Beam Headlamp
R HDLP LO Right Low
-Beam Headlamp
L HDLP HI Left High
-Beam Headlamp
R HDLP HI Right High
-Beam Headlamp
FOG Fog Lamp Relay, Right and Left
Fog Lamps, Headlamp Switch
HDLPS Headlamp Relay, High/Low
-Beam
Control Relay, Right and Left
Low/High
-Beam Fuses
HAZARD Electronic Flasher Module,
Turn/Hazard Switch, Right and
Left Front Turn Lamps, Right and
Left Rear Turn Lamps, Cluster
STOP Stoplamp Switch, Centered
High
-Mounted Stoplamp (CHMSL),
Turn Hazard Switch, ABS Controller,
Stepper Motor Cruise ControlFuse Usage
MIRROR Inadvertent Power Relay, Left
Outside Rearview Mirror Switch,
ALDL, Memory Mirror Module,
Dimmer Switch, Cluster
DRL Daytime Running Lamp (DRL)
Relay, Left and Right Low Beam
in DRL Mode
IGN 0 (ENG) Powertrain Control Module (PCM)
CRANK Powertrain Control Module (PCM)
ABS Anti
-Lock Brake System
(ABS)/Traction Control System
IGN
-1 Rear Ignition-1 Relay, Front Fog
Lamp Relay, Controlled Power
Backup Relay, DRL Relay,
Canister Vent Solenoid
WIPERS Accessory Relay, Wiper Switch
A/C COMP AC Compressor Relay, Cooling Fan
Relays 1, 2, 3, Compressor Clutch
PCM (BAT) PCM