2003 CADILLAC CTS headlamp

2-58
Light Sensor
The light sensor for the DRL and AUTO headlamp
feature is located on top of the instrument panel. If you
cover the sensor, it will read dark, and the exterior lamps
or the Headlamps Suggested message will appear on the
DIC whenever the ignition is on.
Exterior Lighting Battery Saver
If the parking lamps or headlamps have been left on, the
exterior lamps will turn off approximately 10 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 is turned to OFF.
If you need to leave the lamps on for more than
10 minutes, use the exterior lamp control to turn
the lamps back on.

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Interior Lamps
Instrument Panel Brightness Lever
This feature controls the brightness of the instrument
panel lights.
The lever for this feature
is located on the
overhead console.
Slide the lever toward the symbol to brighten the lights
or away from it to dim them.
If you slide the lever all the way toward the symbol past
the resistance point, the interior lamps will come on. To
turn them off, slide the lever back toward the minimum
brightness setting.
Illuminated Entry
The illuminated entry system turns on the reading and
dome lamps and the backlighting to the exterior lamp
control when a door is opened or if you press the remote
keyless entry transmitter unlock button. If activated by
the transmitter, the lighting will remain active for about
25 seconds. The illuminated entry system uses the light
sensor, it must be dark outside in order for the lamps to
turn on. The lamps turn off approximately 25 seconds
after the last door is closed. They will dim to off if the
ignition key is placed in ON, or immediately deactivate
if the power locks are activated.
Parade Dimming
This feature prohibits dimming of the instrument panel
displays and backlighting during daylight hours when
the key is in the ignition and the headlamps are on.
This feature operates with the light sensor and is fully
automatic. When the light sensor reads darkness outside
and the parking lamps are active, the instrument panel
displays can be adjusted by sliding the instrument panel
brightness lever toward the symbol to brighten or away
from the symbol to dim the lighting.

2-97
Cruise Control Light
This light comes on
whenever you set your
cruise control.
The light will go out when the cruise control is turned
off. See ªCruise Controlº listed previously in this
section for more information.
Fog Lamp Light
This light will come on
when the fog lamps are
in use.
The light will go out when the fog lamps are turned off.
See ªFog Lampsº listed previously in this section for
more information.
Lamps On Reminder
This light comes on
whenever the parking
lamps are on.
See ªLamps On Reminderº listed previously in this
section for more information.
Highbeam On Light
This light comes on
whenever the high
-beam
headlamps are on.
See ªHeadlamp High/Low
-Beam Changerº listed
previously in this section for more information.

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Fuel Level Low
This symbol appears
with the Fuel Level
Low message.
When this message appears on the display, it means that
your vehicle is low on fuel. You should refill the tank as
soon as possible. A single chime will sound when this
message is displayed.Headlamps SuggestedThis symbol appears
with the Headlamps
Suggested message.
This message will appear when the amount of available
light outside the vehicle is low and the exterior lamp
control is off. This message informs the driver that
turning on the exterior lamps is recommended even
though the DRL are still illuminated and it has become
dark enough outside to require the headlamps and/or
other exterior lamps.
This message will also appear when the windshield
wipers have been on for more than six seconds and
the exterior lamp control is off or in the parking
lamp position.

2-139
3. Press the TUNE/SEL knob to switch back and forth
between on and off.
When the mode is turned on, a check mark will
appear next to the feature name.
To change the mode using the Navigation system, do the
following:
1. Enter the Personalization menu following the
instructions listed previously.
2. Scroll to Remote Keyless Options to highlight it.
3. Press the TUNE/SEL knob to view the modes.
4. Scroll to Lights Flash At Unlock and press the knob
once to select it.
When the mode is turned on, an X will appear in the
box to the left.
The mode you selected is now set. You can either exit
the programming mode by following the instructions
later in this section or program the next feature available
on your vehicle.Lights Flash at Lock
This feature allows the exterior lamps to flash once
when the remote keyless entry transmitter is used to lock
the vehicle. All doors must be closed for this feature to
work, and the lamps will not flash if the parking lamps
or headlamps are on.
Programmable Modes
Mode 1: ON
Mode 2: OFF
Before your vehicle was shipped from the factory, it was
programmed to Mode 1. The mode to which the vehicle
was programmed may have been changed since it left
the factory. To determine the mode to which the vehicle
is programmed or to program the vehicle to a different
mode, use one of the following procedures:
To change the mode using the Base audio system, do the
following:
1. Enter the personalization portion of the SETUP
menu following the instructions listed previously.
2. Scroll to LIGHTS FLASH AT LOCK to highlight it.

4-17
Here are some tips on night driving.

Drive defensively.

Don't drink and drive.

Since you can't see as well, you may need to
slow down and keep more space between you and
other vehicles.

Slow down, especially on higher speed roads. Your
headlamps can light up only so much road ahead.

In remote areas, watch for animals.

If you're tired, pull off the road in a safe place
and rest.
No one can see as well at night as in the daytime. But as
we get older these differences increase. A 50
-year-old
driver may require at least twice as much light to see the
same thing at night as a 20
-year-old.
What you do in the daytime can also affect your night
vision. For example, if you spend the day in bright
sunshine you are wise to wear sunglasses. Your eyes will
have less trouble adjusting to night. But if you're
driving, don't wear sunglasses at night. They may cut
down on glare from headlamps, but they also make a lot
of things invisible.You can be temporarily blinded by approaching
headlamps. It can take a second or two, or even several
seconds, for your eyes to readjust to the dark. When you
are faced with severe glare (as from a driver who
doesn't lower the high beams, or a vehicle with
misaimed headlamps), slow down a little. Avoid staring
directly into the approaching headlamps.
Keep your windshield and all the glass on your vehicle
clean
-- inside and out. Glare at night is made much
worse by dirt on the glass. Even the inside of the glass
can build up a film caused by dust. Dirty glass makes
lights dazzle and flash more than clean glass would,
making the pupils of your eyes contract repeatedly.
Remember that your headlamps light up far less of a
roadway when you are in a turn or curve. Keep your
eyes moving; that way, it's easier to pick out dimly
lighted objects. Just as your headlamps should be
checked regularly for proper aim, so should your eyes
be examined regularly. Some drivers suffer from night
blindness
-- the inability to see in dim light -- and
aren't even aware of it.

4-29

Tie a red cloth to your vehicle to alert police that
you've been stopped by the snow.

Put on extra clothing or wrap a blanket around you.
If you have no blankets or extra clothing, make body
insulators from newspapers, burlap bags, rags, floor
mats
-- anything you can wrap around yourself or
tuck under your clothing to keep warm.
You can run the engine to keep warm, but be careful.
CAUTION:
Snow can trap exhaust gases under your vehicle.
This can cause deadly CO (carbon monoxide) gas
to get inside. CO could overcome you and kill
you. You can't see it or smell it, so you might not
know it is in your vehicle. Clear away snow from
around the base of your vehicle, especially any
that is blocking your exhaust pipe. And check
around again from time to time to be sure snow
doesn't collect there.
Open a window just a little on the side of the
vehicle that's away from the wind. This will help
keep CO out.
Run your engine only as long as you must. This saves
fuel. When you run the engine, make it go a little faster
than just idle. That is, push the accelerator slightly. This
uses less fuel for the heat that you get and it keeps the
battery charged. You will need a well
-charged battery to
restart the vehicle, and possibly for signaling later on
with your headlamps. Let the heater run for a while.

6-35
Bulb Replacement
For the proper type of replacement bulb, see
ªReplacement Bulbsº in the Index.
For any bulb changing procedure not listed in this
section, contact your dealer.
High Intensity Discharge (HID) Lighting
(If Equipped)
CAUTION:
The low beam high intensity discharge lighting
system operates at a very high voltage. If you try
to service any of the system components, you
could be seriously injured. Have your dealer or a
qualified technician service them.
Halogen Bulbs
CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Headlamps
It is recommended that this component be replaced as a
unit. See your dealer.