light CADILLAC XLR 2007 1.G Service Manual

When it is bright enough outside, the regular
lamps go off, and the front turn signal lamps take
over. If you start your vehicle in a dark garage,
the automatic headlamp system comes on
immediately. Once you leave the garage, it takes
about one minute for the automatic headlamp
system to change to DRL if it is light outside.
During that delay, the instrument panel cluster
might not be as bright as usual. Make sure
the instrument panel brightness knob is in the full
bright position. SeeInstrument Panel Brightness
on page 170for more information.
If it is dark enough outside and the exterior lamp
control is off, a HEADLAMPS SUGGESTED
message displays on the Driver’s Information
Center (DIC). This message informs the driver that
turning on the exterior lamps is recommended.
SeeDIC Warnings and Messages on page 206.Turn the exterior lamp control off a second time,
or turn on the headlamps to turn off the
HEADLAMPS SUGGESTED message in the DIC.
If the parking lamps or the fog lamps were
turned on instead, the HEADLAMPS SUGGESTED
message continues to display.
As with any vehicle, you should turn on the
regular headlamp system when needed.
Adaptive Forward Lighting System
The Adaptive Forward Lighting System (AFS)
swivels the headlamps horizontally to provide
greater road illumination while turning. AFS will
operate when the vehicle speed is greater than
2 mph (3 km/h). AFS will not operate when
the transmission is in REVERSE (R). AFS is not
immediately operable after starting the vehicle;
driving a short distance is required to calibrate the
AFS. To enable AFS, set the exterior lamp
switch on the multifunction lever to the AUTO
position. Moving the switch out of the AUTO
position will deactivate the system. SeeExterior
Lamps on page 164.
167

Fog Lamps
Use fog lamps for better vision in foggy or misty
conditions.
The fog lamps control is located on the
multifunction lever next to the exterior lamp
control.
-(Fog Lamps):Turning the band to this
position will turn the fog lamps on.
When you turn the fog lamps on, the fog lamp
light will appear on the instrument panel cluster to
indicate that the fog lamps and the parking
lamps are on.
If you turn the high-beam headlamps on, the fog
lamps will turn off. They will turn on again
when you switch to low-beam headlamps.
The ignition must be on for the fog lamps to
operate. The fog lamps will turn off when the
ignition is turned off.
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.
With Twilight Sentinel
®you will see the following
happen:
When it is dark enough outside, the front turn
signal lamps (DRL) will go off, and the
headlamps and parking lamps will come on.
The other lamps that come on with headlamps
will also come on.
When it is bright enough outside, the
headlamps will go off, and the front turn signal
lamps (DRL) will come on, as long as the
exterior lamp switch is in the AUTO position.
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.
168

During that delay, your instrument panel cluster
may not be as bright as usual. Make sure
your instrument panel brightness control is in full
bright position. SeeInstrument Panel Brightness
on page 170for more information.
You can idle the vehicle with the lamps off, even
when it is dark outside. After starting the
vehicle, turn the exterior lamp control band to off,
then release it. The lamps will remain off until
you turn the control band to off again.
Twilight Sentinel
®also provides exterior
illumination as you leave the vehicle. If Twilight
Sentinel
®has turned on the lamps when you turn
off the ignition, your lamps will remain on until:
The exterior lamp switch is moved from OFF to
the parking lamp position, or
a delay time that you select has elapsed.
SeeDriver Information Center (DIC) on page 203
to select the delay time that you want. You
can also select no delay time.If you turn off the ignition with the exterior lamp
switch in the parking lamp or headlamp position, the
Twilight Sentinel
®delay will not occur. The lamps
will turn off as soon as the switch is turned off.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Exterior Lighting Battery Saver
If the manual parking lamps or headlamps have
been left on, the exterior lamps will turn off as soon
as the ignition is turned off or RAP is active.
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, use the exterior
lamp control to turn the lamps back on.
169

Instrument Panel Brightness
The button for this feature is located on the
instrument panel to the left of the steering column.
+
!- (Brightness):Press this button to change
the brightness of the instrument panel lights.
Press the DIMMER button until PANEL DIMMING
appears on the Driver Information Center (DIC).
Then use the brightness button to adjust the
instrument panel brightness. Press the top of the
button to brighten the lights or the bottom of
the button to dim the lights. SeeHead-Up Display
(HUD) on page 171for more information.
Be sure not to have the brightness turned all the
way down with the lamps on during the day.
Your DIC may not be visible.
Courtesy Lamps
When any door or the trunk lid is opened, the
interior lamps will go on unless it is bright outside.
Press the interior lamp button on the right side
of the instrument panel, to turn the courtesy lamps
on or off.
Entry/Exit Lighting
With entry lighting, the interior lamps will come on
when entering the vehicle. The interior lamps
will come on for about 20 seconds when the
engine is turned off.
You can turn exit and entry lighting off by quickly
turning the courtesy lamps on and off.
170

Reading Lamps
Your inside rearview mirror includes two reading
lamps. The lamps will go on when a door is
opened. When the doors are closed, each lamp
can be turned on individually by pressing the
button for that lamp.
Battery Run-Down Protection
Your vehicle has a feature to help prevent the
battery from being drained, in case the underhood
lamp, vanity mirror lamps, cargo lamps, reading
lamps, console, or glove box lamps are
accidentally left on, or something is left plugged
into the accessory power outlet or cigarette lighter.
If any of the accessory lamps are left on, they
will automatically time-out after about 20 minutes.
To reset the battery protection, all of the above
lamps must be turned off or the ignition must be in
the Acc position.
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.
The Head-Up Display (HUD) allows you to see
some of the driver information that appears
on your instrument panel cluster.
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, seeDriver Information
Center (DIC) on page 203.
171

The HUD consists of the following information:
Speedometer
Turn Signal Indicators
High-Beam Indicator Symbol
Tap-Up/Tap-Down Transmission Feature
Check Gages Icon
Adaptive Cruise Control Features and
Indicators
Radio Features
Be 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.
172

The HUD controls are
located to the left of the
steering wheel.
+
!- (Brightness):This button is used to adjust
the brightness of the HUD and the instrument
panel cluster.
DIMMER:This button is used to select the HUD
or the instrument panel cluster to adjust the
brightness.
HUD:This button is used to adjust the vertical
position of the HUD display.To adjust the HUD so you can see it properly, do
the following:
1. Adjust the seat to a comfortable driving
position. If you change your seat position later,
you may have to re-adjust your HUD.
2. Start your engine and press the top or bottom
of the HUD button to center the HUD image in
your view.
The HUD image can only be adjusted up and
down, not side-to-side.
3. Press the DIMMER button until the DIC reads
HUD DIMMING. Then use the brightness
button to adjust the desired intensity.
The brightness of the HUD image is determined
by the light conditions in the direction your vehicle
is facing and where you have the HUD set. If
you are facing a dark object or a heavily shaded
area, your HUD may anticipate that you are
entering a dark area and may begin to dim.
To turn off the HUD, press the brightness button
down until the image disappears.
Polarized sunglasses could make the HUD image
harder to see.
173

As light shines out from the HUD, it is possible for
light to shine back in. In rare occurrences,
when the sun is at a specic angle and position,
the sun’s rays can shine back into the HUD. When
this occurs, the display device within the HUD
will be temporarily illuminated. The event will end
when the vehicle’s angle to the sun changes.
Clean the inside of the windshield as needed to
remove any dirt or lm that reduces the sharpness
or clarity of the HUD image.
To clean the HUD, spray household glass cleaner
on a soft, clean cloth. Wipe the HUD lens gently,
then dry it. Do not spray cleaner directly on the lens
because the cleaner could leak into the unit.
If the ignition is on and you cannot see the HUD
image, check to see if:
Something is covering the HUD unit.
The brightness is adjusted properly.
The HUD image is adjusted to the proper
height.
Ambient light in the direction your vehicle is
facing is low.
A fuse is blown. SeeFuses and Circuit
Breakers on page 453.Keep in mind that your windshield is part of the
HUD system. SeeWindshield Replacement
on page 412.
The following Adaptive Cruise Control (ACC)
messages may appear in the HUD:
CRUISE SPEED LIMITED:This message
indicates that your vehicle speed has been
reduced below your set speed due to ACC
limitations. Your set speed is too high and ACC
cannot detect other vehicles at far enough
distances for the system to operate properly.
TIGHT CURVE:This message indicates that ACC
has reduced your vehicle speed due to a tight
curve in the road. Once the road straightens, ACC
will return to your selected set speed or follow
distance setting. See “Adaptive Cruise Control
(ACC)” underTurn Signal/Multifunction Lever on
page 141for more information.
You may also see an ACC active symbol, alert
symbol or vehicle ahead symbol. See “Adaptive
Cruise Control (ACC)” underTurn
Signal/Multifunction Lever on page 141for more
information.
174

Ultrasonic Rear Parking
Assist (URPA)
Ultrasonic Rear Parking Assist can help you to
determine how close an object is to your rear
bumper within a given area, making parking easier.
{CAUTION:
The Ultrasonic Rear Park Assist (URPA)
system does not replace driver vision.
URPA does not:
Operate above speeds of 3 mph
(5 km/h).
Detect objects more than 5 feet
(1.5 meters) behind the vehicle. This
distance may be less during warmer
or humid weather.
Detect objects that are below the
bumper, underneath the vehicle, or
that are very close to the vehicle.
Detect children, pedestrians,
bicyclists, or pets.
CAUTION: (Continued)
CAUTION: (Continued)
So if you do not use proper care before
backing up, you could hit a vehicle, child,
pedestrian, bicyclist, or pet, resulting in
vehicle damage, injury, or death. Even
though the vehicle has the URPA system,
always check carefully before backing up
by checking behind your vehicle.
The URPA display is
located inside the
vehicle, on the center
console. It has three
color-coded lights
that can be seen
through the rearview
mirror or by turning
around.
175

How the System Works
URPA comes on automatically when the shift lever
is moved into REVERSE (R) and the vehicle
speed is less than 3 mph (5 km/h). When
the system comes on, the three lights on the
display will illuminate to let you know that
the system is working. URPA senses how close
your vehicle is to an object. The distance is
determined by the four ultrasonic sensors located
on the rear bumper. When you shift into
REVERSE (R) and an object is detected, the
following will occur in sequence depending on the
distance from the object:
At 5 feet (1.5 m) a chime will sound and
one amber light will be lit;
at 40 inches (1.0 m) both amber lights will be lit;
at 20 inches (0.5 m) a continuous chime will
sound and all three lights (amber/amber/red)
will be lit; and
at 1 foot (0.3 m) a continuous chime will sound
and all three lights (amber/amber/red) will ash.
URPA can detect objects 3 inches (7.6 cm) and
wider, and at least 10 inches (25.4 cm) tall, but it
cannot detect objects that are above trunklevel. In order for the rear sensors to recognize an
object, it must be within operating range.
If the URPA system is not functioning properly, the
display will ash red, indicating that there is a
problem. The light will also ash red while driving if
a trailer is attached to your vehicle, or a bicycle or
object is on the back of, or hanging out of your
trunk. The light will continue to ash until the trailer
or the object is removed and your vehicle is driven
forward at least 15 mph (25 km/h).
It may also ash red if the ultrasonic sensors are
not kept clean. So be sure to keep your rear
bumper free of mud, dirt, snow, ice and slush or
materials such as paint or the system may
not work properly. If after cleaning the rear bumper
and driving forward at least 15 mph (25 km/h),
the display continues to ash red, see your dealer.
For cleaning instructions, seeWashing Your
Vehicle on page 446.
It may also ash red if your vehicle is moving in
REVERSE (R) at a speed greater than 3 mph
(5 km/h). Other conditions that may affect system
performance include things like the vibrations
from a jackhammer or the compression of
air brakes on a very large truck.
176