low beam CADILLAC STS 2006 1.G User Guide

When the automatic lights are enabled and it is dark
enough outside, the DRL will turn off and the low-beam
headlamps will turn on. When it is bright enough
outside, the low-beam headlamps will go off, and the
DRL will turn back on. If you start your vehicle in a dark
garage, the automatic headlamp system will come on
immediately. Once you leave the garage, it will take
about one minute for the automatic headlamp system to
change to DRL if it is light outside. During that delay,
your instrument panel cluster may not be as bright
as usual. Make sure your instrument panel brightness
lever is in the full bright position. SeeInstrument
Panel Brightness on page 3-39.
To operate your vehicle with the DRL off, turn the
exterior lamp control off and then do one of the
following:
Turn the exterior lamp control to the parking lamp
position.
Turn the exterior lamp control to the headlamp
position.
Turn the exterior lamp control from AUTO to off and
back to AUTO.
An AUTOMATIC LIGHTS OFF message will appear on
the DIC, showing that automatic lighting has been
disabled.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Light Sensor
The light sensor for the DRL is located on top of the
instrument panel. If you cover the sensor, it will
read dark, and the exterior lamps may come on when
you do not need them.
3-36

Fog Lamps
Use the fog lamps for better vision in foggy or
misty conditions.
The fog lamp controls are located on the turn
signal/multifunction lever.
-(Fog Lamps):The band with this symbol is used to
turn the front fog lamps on and off.
The parking lamps must be on for the fog lamps
to work.
To turn the fog lamps on, turn the fog lamp band on the
lever up to the dot and release it. The band will return
to its original position.
To turn the fog lamps off, turn the fog lamp band up to the
dot and release it. The band will return to its original
position, and the fog lamps will turn off. If you turn on the
high-beam headlamps, the fog lamps will also turn off.
They’ll turn back on again when you switch back to
low-beam headlamps.
Some localities have laws that require the headlamps to
be on along with the fog lamps.
Twilight Sentinel®
Twilight Sentinel®can turn your lamps on and off
for you.
A light sensor on top of the instrument panel makes the
Twilight Sentinel
®work, so be sure it is not covered.
3-37

Reading Lamps
The reading lamps are located on the overhead
console. These lamps come on automatically when any
door is opened.
For manual operation, press the button next to each
lamp to turn it on. Press it again to turn the lamp off.
If the reading lamps are left on, they automatically shut
off 10 minutes after the ignition has been turned off.
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, the
climate control fan at high speeds, 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 and the fan may cut back to a lower
speed. For more battery saving information, see “Battery
Saver Active Message” underDIC Warnings and
Messages on page 3-79.
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, or the garage door opener. When the
ignition is turned off, the power to these features will
automatically turn off after 10 minutes (three minutes if
a new car has 15 miles (24 km) or less). 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.
Head-Up Display (HUD)
{CAUTION:
If the HUD image is too bright, or too high in
your eld of view, it may take you more time to
see things you need to see when it is dark
outside. Be sure to keep the HUD image dim
and placed low in your eld of view.
If equipped, the Head-Up Display (HUD) allows you to
see some of the driver information that appears on your
instrument panel cluster on the windshield.
3-40

The information may be displayed in English or metric
units and appears as an image focused out toward
the front of your vehicle. To change from English
to metric units, seeDIC Controls and Displays on
page 3-74.
The HUD consists of the following information:
Speedometer
Turn Signal Indicators
High-Beam Indicator Symbol
Driver Shift Control Transmission Feature, see
Automatic Transmission Operation (5-Speed
Automatic) on page 2-28orAutomatic Transmission
Operation (6-Speed Automatic) on page 2-32
Check Gages Icon
Adaptive Cruise Control Features and Indicators
(If Equipped), seeAdaptive Cruise Control on
page 3-19
Forward Collision Alert Features and Indicators
(If Equipped), seeForward Collision Alert (FCA)
System on page 3-9
Radio FeaturesBe sure to continue scanning your displays, controls
and driving environment just as you would in a vehicle
without HUD. If you never look at your instrument
panel cluster, you may not see something important,
such as a warning light. Under important warning
conditions, the CHECK GAGES message will display in
the HUD. View your Driver Information Center (DIC)
for more information.United States version shown, Canada similar
3-41

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. SeeCruise Control on page 3-16andAdaptive
Cruise Control on page 3-19for more information.
Highbeam On Light
This light comes on
whenever the high-beam
headlamps are on.
See “Intellibeam™ Intelligent High-Beam Headlamp
Control System” underHeadlamps on page 3-31
andHeadlamp High/Low-Beam Changer on page 3-8
for more information.
Fuel Gage
The fuel gage shows
approximately how much
fuel is in the tank. It
works only when the
engine is on.
If the fuel supply gets low, the Fuel Level Low message
will appear on the DIC and a single chime will sound. See
DIC Warnings and Messages on page 3-79for more
information.
Here are a few concerns some owners have had about
the fuel gage. All of these situations are normal and
do not indicate that anything is wrong with the fuel gage:
At the gas station the gas pump shuts off before
the gage reads full.
The gage may change when you turn, stop quickly
or accelerate quickly.
It takes a little more or less fuel to ll the tank than
the gage indicated. For example, the gage may have
indicated that the tank was half full, but it actually
took a little more or less than half the tank’s capacity
to ll the tank.
3-72

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 are
driving, do not 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 re-adjust to the dark. When
you are faced with severe glare, as from a driver
who does not lower the high beams, or a vehicle with
misaimed headlamps, slow down a little. Avoid
staring directly into the approaching headlamps.Keep the 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 lm caused by dust. Dirty glass
makes lights dazzle and ash more than clean
glass would, making the pupils of your eyes contract
repeatedly.
Remember that the headlamps light up far less of a
roadway when you are in a turn or curve. Keep
your eyes moving; that way, it is easier to pick out
dimly lighted objects. Just as the 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 are not even aware of it.
4-19

Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-54.
For any bulb changing procedure not listed in this
section, contact your dealer.
High Intensity Discharge (HID)
Lighting
{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 qualied technician service them.
Your vehicle may have HID headlamps and fog lamps.
After your vehicle’s HID headlamp or fog lamp bulb has
been replaced, you may notice that the beam is a slightly
different shade than it was originally. This is normal.
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.
5-53

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

Fuses Usage
ECM/TCMEngine Control Module,
Transmission Control Module,
Easy Key Module, Instrument
Panel Cluster
SPARE Spare
SPARE Spare
LT PARKDriver’s Side Park Lamp, Driver’s
Side Taillamp
LIC DIMMINGLicense Plate, Instrument
Panel Dimming
IPM ALDLInstrument Panel Module Assembly
Line Data Link Connector
HUDHeads-Up Display, Column
Lock Module
V8 ECMV8 Engine Control Module,
Evap. Solenoid
ABS Anti-lock Brake Controller
STR RLY Starter Relay
WASH
NOZ/AQSHeated Washer Nozzles, Air
Quality SensorFuses Usage
ODD COILSOdd Ignition Coils, Odd
Fuel Injectors
TCM IPCTransmission Control Module,
Instrument Panel, Engine Control
SPARE Spare
MAF Mass Air Flow Sensor
HIGH FAN Cooling Fan - High Speed
LOW FAN Cooling Fan - Low Speed
RT PARKPassenger’s Side Park Lamp,
Right Taillamp
HORN Horn
LT HI BEAM Driver’s Side Headlamp High Beam
LT LOW BEAM Driver’s Side Headlamp Low Beam
RT LOW BEAMPassenger’s Side Headlamp
Low Beam
RT HI BEAM Right Headlamp High Beam
HFV6 ECMHigh Feature V6 Engine
Control Module
5-108

Relays Usage
HDLP WASH
RELAY
JUMPER -OPTHeadlamp Washer
STARTER
RELAY MINIStarter
SPARE Spare
FOG LAMP
RELAY MICROFog Lamps
CMP CLU
RELAY MICROAir Conditioning Compressor Clutch
BLOWER
RELAY MINIFront Blower Motor
POWERTRAIN
RELAY MICROEngine Controls
RUN/CRANK
RELAY MICROIgnition 1, Starter, Washer Nozzle,
Air Quality, Anti-lock Brake System,
Climate Control Panel, Transmission
Control Module, Instrument Panel
Cluster, Mass Airow Sensor,
Engine Control Module
LOW SPEED
FAN RELAY
MINICooling Fan Low SpeedRelays Usage
ACCESSORY
RELAY MINIIgnition 3, Rain Sensor, Headlamp
Washer, Windshield Wiper/Washer
Module, Infotainment (Export Only)
PARK LAMP
RELAY MICROParking Lamps, Instrument Panel
Dimming, Rear License Plate Lamps
HIGH BEAM
RELAY MICROHeadlamp High Beam
LOW BEAM
RELAY/HID
MINI-OPTLow Beam/High Intensity Discharge
HIGH
SPEED FAN
RELAY MINICooling Fan High Speed
S/P FAN
RELAY MINICooling Fan Series/Parallel
HORN RELAY
MICROHorn
SPARE Spare
Circuit
BreakersUsage
HDLP WASH
C/B -OPTHeadlamp Washer (If Equipped)
5-109