1999 CADILLAC SEVILLE light

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2-43
Exterior Lamps
The control on the left
side of the instrument
panel controls these
lamp systems:

Parking Lamps

Headlamps

Taillamps

Sidemarker Lamps

License Plate Lamp

Underhood Lamp

Fog Lamps (STS Only)

Instrument Panel Lights

Interior Courtesy Lamps
Instrument panel backlighting will dim only when it is
dark outside.
Parking Lamps
Turn the exterior lamps control knob once clockwise to
turn on the parking lamps, taillamps, sidemarker lamps,
license plate lamp and underhood lamp. Turn the control
counterclockwise to turn these lamps off. The parking
brake indicator light will be on if the parking lamps
are on.
Headlamps
The control for the headlamps is on the left side of the
instrument panel. Turn the exterior lamps control knob
all the way clockwise to turn the headlamps on. Turn the
control knob all the way counterclockwise to turn the
headlamps off.
Wiper
-Activated Headlamps
This feature turns on the headlamps and parking lamps
after the windshield wipers have been in use for
approximately six seconds.
To operate the wiper
-activated headlamps, the Twilight
Sentinel must be on. If the wiper-activated headlamps
are on and the ignition key is turned to ACC, the
wiper
-activated headlamps will continue. When you
turn the key to OFF or ACC, the wiper
-activated
headlamps will immediately turn off.

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The wiper-activated headlamps will turn off if you turn
off the Twilight Sentinel or the windshield wipers. If
turned off by deactivating the Twilight Sentinel, a
HEADLAMPS SUGGESTED message will be
displayed on the Driver's Information Center (DIC).
Lamps On Reminder
You will hear a warning chime if you open the driver's
door while leaving the lamps on and the exterior lamps
control is activated. An exception to this is when you're
using Twilight Sentinel or if the ignition is on.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
DRL can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset.
The DRL system will make the high
-beam headlamps
come on at reduced brightness when:

the ignition is on,

the headlamp switch is off and

the transaxle is not in PARK (P).When DRL are on, only your high
-beam headlamps (at
reduced brightness) will be on. No other exterior lamps
such as the parking lamps, taillamps, etc. will be on
when the DRL are being used. Your instrument panel
won't be lit up either.
When the Twilight Sentinel
 switch 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 switch
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.
If it's dark outside and the Twilight Sentinel control is
off, a HEADLAMPS SUGGESTED message will
display on the Driver's Information Center (DIC). This
message informs the driver that turning on the exterior
lamps is recommended even though the DRL are still
illuminated. It has become dark enough outside to
require the headlamps and/or other exterior lamps.
Turning on the Twilight Sentinel or the headlamps will
deactivate the DRL and remove the HEADLAMPS
SUGGESTED message. If the parking lamps or the fog
lamps were turned on instead, the DRL will still
deactivate and the HEADLAMPS SUGGESTED
message will continue to be displayed.

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To idle your vehicle with the DRL off, turn off the
Twilight Sentinel 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).
To drive your vehicle with the DRL off, turn off
the Twilight Sentinel and manually turn on the
parking lamps.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Fog Lamps (STS Only)
Use the fog lamps for better vision in foggy or misty
conditions. When you push the fog lamp button located
next to the exterior lamps control, a small indicator light
and the LIGHTS ON and fog lamp telltales on the
instrument panel cluster will tell you that the fog lamps
and the parking lamps are on. Pushing the fog lamp
button again will turn them off.
If you turn on the high
-beam headlamps, the fog lamps
will turn off. They'll turn back on again when you
change to low
-beam headlamps. You can use the fog
lamp button to turn the fog lamps on or off when the
parking lamps or headlamps are on.When the Twilight Sentinel

is on and the fog lamps are
turned on, the fog lamps, headlamps and parking lamps
will remain on.
Cornering Lamps
The cornering lamps come on when the headlamps or
parking lamps are on and you signal a turn. They
provide more light for cornering.
Twilight Sentinel

This control is located
below the exterior lamps
control knob. It
automatically turns the
lamps on and off by sensing
how dark it is outside.
To operate the Twilight Sentinel, leave the exterior
lamps control knob off and move the TWILIGHT lever
to any position but OFF.

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If you move the lever all the way to the right, the lamps
will remain on for approximately three minutes after the
ignition has been turned to OFF or ACC. If you move
the lever so it is just on, the lamps will go off quickly
when you turn the ignition out of ON. You can adjust
the delay time from only a few seconds to three minutes.
If it's dark enough outside and Twilight Sentinel is
turned off, a HEADLAMPS SUGGESTED message
will display on the Driver's Information Center (DIC).
This message informs the driver that turning on the
exterior lamps is recommended (it's become dark
enough outside to require the headlamps and/or other
exterior lamps). Turning on the Twilight Sentinel, the
headlamps or the fog lamps will remove the
HEADLAMPS SUGGESTED message.Light Sensor
The light sensor for the Daytime Running Lamps (DRL)
and the Twilight Sentinel is located on the driver's side
of the front defogger grille. If you cover the sensor, it
will read ªdarkº and the lamps will come on.

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2-47 Exterior Lighting Battery Saver
If the manual parking lamps or headlamps have been left
on, the exterior lamps will turn off approximately ten
minutes after the ignition is turned to OFF. This protects
against draining the battery in case you have
accidentally left the headlamps or parking lamps on. The
battery saver does not work if the headlamps are turned
on after the ignition switch is turned to OFF. If you need
to leave the lamps on for more than 10 minutes, use the
exterior lamps control knob to turn the lamps back on.
To delay the lamps from turning off, see ªTwilight
Sentinelº in the Index.
Interior Lamps
Instrument Panel Intensity/Brightness
Control
With the parking lamps on, the instrument panel lighting
automatically dims when it becomes dark outside and
brightens when it becomes light outside. When it's dark,
and if the parking lamps are on, the brightness control
can be manually adjusted by using the instrument panel
brightness control.
The button is located to the
right of the Twilight
Sentinel control. Push the
button in to release it to the
outward position.
Turn the button counterclockwise to dim and clockwise
to brighten the lighting. Push the button in to return it to
the original storage position.
Interior Lamps Control
The interior lamps control,
located in the overhead
console, has three positions:
OFF, AUTO and ON.

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With the control at AUTO and the front door opened,
the overhead console light, front hush panel lamps and
rear footwell lamps in the door will automatically come
on. When the rear door is opened, all the front door
lighting and rear overhead lamps will come on.
When the control is at ON, the courtesy lamps are
turned on. At OFF, the lamps are turned off. (All
automatic interior lighting functions are terminated.)
When the interior lamp control is at OFF, only the
driver's door controls and ignition switch backlighting
functions will operate.
Illuminated Entry
The illuminated entry system turns on the courtesy
lamps and the backlighting to the driver's door switches
and to the ignition key when a door is opened or if you
press the Remote Keyless Entry (RKE) transmitter
unlock button. The illuminated entry system works with
the light sensor and it must be dark outside in order for
the courtesy lamps or backlighting to turn on. The
courtesy lamps turn off approximately 25 seconds after
the last door is closed or after the ignition key is turned
to RUN or if the RKE transmitter lock button is pressed.
The courtesy lamps turn off approximately 40 seconds
after the doors are unlocked with the RKE transmitter if
no door is opened.
Parade Dimming
This feature prohibits the dimming of the instrument
panel lights during daylight while the parking lamps are
on. This feature works with the light sensor and is fully
automatic. When the light sensor reads darkness outside,
the instrument panel lights can be adjusted by following
the steps under ªInstrument Panel Intensity/Brightness
Control.º Backlighting to the instrument panel will also
turn on.
Reading Lamps
The reading lamps are located in the roof. These lamps
and the interior courtesy lamps come on when any door
is opened and it is dark outside. The rear lamps come on
when a rear door is opened. Press the button near the
lamps to turn them on and off.
If the reading lamps are left on, they automatically shut
off 10 minutes after the ignition has been turned off.

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2-49 Battery Load Management
The battery load management feature is designed to
monitor the vehicle's electrical load and determine 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, high blower fan,
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 fan blower may cut back to a
lower speed. For more battery saving information, see
ªBattery Saver Active Messageº in the Index.
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, cigarette lighters 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 is opened,
the trunk is opened or the courtesy lamp switch is turned on.
Mirrors
Electrochromic Day/Night Rearview Mirror
with Compass
Your vehicle has an electrochromic inside rearview
mirror with a compass.
By pressing the MIRROR side of the button located at
the bottom of the mirror, the position of the mirror
automatically changes to reduce glare from headlamps
behind you.

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The mirror also includes an eight-point compass display
in the upper right corner of the mirror face. When on,
the compass automatically calibrates as the vehicle
is driven.
When cleaning the mirror, use a paper towel or similar
material dampened with glass cleaner. Do not spray
glass cleaner directly on the mirror as that may cause the
liquid cleaner to enter the mirror housing.
Cleaning the Photocells
Use a cotton swab and glass cleaner to clean the
photocells when necessary.
Mirror Operation
The right side of the button, located at the bottom of the
mirror, turns the electrochromic mirror on and off. To
turn on the automatic dimming feature, press MIRROR.
To turn off the automatic dimming, press MIRROR
again. The indicator light will be illuminated when this
feature is active.
Time Delay
The automatic mirror has a time delay feature which
prevents unnecessary changing from the night back to
the day position. This delay prevents rapid changing of
the mirror as you drive under lights and through traffic.Compass Operation
Press the COMPASS side of the button to turn the
compass on or off.
When the ignition and the compass feature are on, the
compass will show two character boxes for
approximately two seconds. After two seconds, the
mirror will display the compass heading.
Compass Calibration
If, after two seconds, the display does not show a
compass heading (ªNº for North, for example), there
may be a strong magnetic field interfering with the
compass. Such interference may be caused by a
magnetic antenna mount, magnetic note pad holder or a
similar magnetic item. If the letter ªCº should ever
appear in the compass window, the mirror
needs calibration.
The mirror can be calibrated in one of two ways:

Drive the vehicle in circles at 5 mph (8 km/h) or less
until the display reads a direction, or

Drive the vehicle on your everyday routine.