interior lights CADILLAC CT4 2022 Owners Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
20 KEYS, DOORS, AND WINDOWS
Vehicle Security
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
This vehicle has an anti-theft alarm
system.
The indicator light, on the instrument
panel near the windshield, indicates
the status of the system.
Off :Alarm system is disarmed.
On Solid : Vehicle is secured during
the delay to arm the system.
Fast Flash : Vehicle is unsecured.
A door, the hood, or the trunk is open.
Slow Flash : Alarm system is armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of
three ways:
.Use the remote key.
.Use the Keyless Access system.
.With a door open, pressQon
the interior of the door.
3. After 30 seconds the alarm system will arm, and the indicator light
will begin to slowly flash indicating
the alarm system is operating.
Pressing
Qon the remote key a
second time will bypass the
30-second delay and immediately
arm the alarm system.
The vehicle alarm system will not arm
if the doors are locked with the
mechanical key.
If the driver door is opened without
first unlocking with the remote key,
the horn will chirp and the lights will
flash to indicate pre-alarm. If the
vehicle is not started, or the door is
not unlocked by pressing
Kon the
remote key during the 10-second
pre-alarm, the alarm will be activated.
The alarm will also be activated if a
passenger door, the trunk, or the hood
is opened without first disarming the
system. When the alarm is activated,
the turn signals flash and the horn

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
KEYS, DOORS, AND WINDOWS 21
sounds for about 30 seconds. The
alarm system will then re-arm to
monitor the next unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn
off the alarm if it has been activated:
.PressKon the remote key.
.Unlock the vehicle using the Keyless
Access system.
.Start the vehicle.
To avoid setting off the alarm by
accident:
.Lock the vehicle after all occupants
have left the vehicle and all doors
are closed.
.Always unlock a door with the
remote key or use the Keyless
Access system.
Unlatching the driver door with the
mechanical key will not disarm the
system or turn off the alarm.
How to Detect a Tamper
Condition
IfKis pressed on the remote key and
the horn chirps and the lights flash
three times, a previous alarm occurred
while the system was armed.
If the alarm has been activated, a
message will appear on the DIC.
Power Sounder, Inclination
Sensor, and Intrusion Sensor
In addition to the standard
theft-deterrent system features, this
system may also have a power
sounder, inclination sensor, and
intrusion sensor.
The power sounder provides an
audible alarm which is distinct from
the vehicle’s horn. It has its own
power source, and can sound an alarm
if the vehicle’s battery is
compromised.
The inclination sensor can set off the
alarm if it senses movement of the
vehicle, such as when a tire is
removed. Make sure the vehicle's
alarm is not armed prior to any
jacking. The intrusion sensor monitors the
vehicle interior, and can activate the
alarm if it senses unauthorized entry
into the vehicle's interior. Do not allow
passengers or pets to remain in the
vehicle when the intrusion sensor is
activated.
Before arming the theft-deterrent
system and activating the intrusion
sensor:
.Make sure all doors and windows
are completely closed.
.Secure any loose items such as sun
glasses.
.Make sure there are no obstructions
blocking the sensors in the front
overhead console.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
128 LIGHTING
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . 128
Exterior Lamps Off Reminder . . . 130
Headlamp High/Low-BeamChanger . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . 130
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 130
Automatic Headlamp System . . . 130
Hazard Warning Flashers . . . . . . . . 131
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Cornering Lamps . . . . . . . . . . . . . . . . . 132
Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Courtesy Lamps . . . . . . . . . . . . . . . . . . 132
Dome Lamps . . . . . . . . . . . . . . . . . . . . . 132
Reading Lamps . . . . . . . . . . . . . . . . . . . 133
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . 133
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . 134
Battery Load Management . . . . . . 134
Battery Power Protection . . . . . . . . 135
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the
turn signal lever.
Turn the control to the following
positions:
O:Turns the exterior lamps off and
deactivates the AUTO mode. Turn to
Oagain to reactivate the AUTO mode.
In Canada, the headlamps will
automatically reactivate when the
vehicle is shifted out of P (Park).
AUTO : Automatically turns the
exterior lamps on and off, depending
on outside lighting.
;: Turns on the parking lamps
including all lamps, except the
headlamps.
2: Turns on the headlamps together
with the parking lamps and
instrument panel lights.
IntelliBeam System
If equipped, this system turns the
vehicle's high-beam headlamps on and
off according to surrounding traffic
conditions.
The system turns the high-beam
headlamps on when it is dark enough
and there is no other traffic present.
This light
bcomes on in the
instrument cluster when the
IntelliBeam system is enabled.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
132 LIGHTING
If after signaling a turn or lane
change, the arrow flashes rapidly or
does not come on, a signal function
may be inoperative. This vehicle may
be equipped with LED lighting. For
replacement of any LED lighting,
contact your dealer.
Cornering Lamps
If equipped with cornering lamps, they
automatically come on when all of the
following occur:
.The low-beam headlamps are on.
.The turn signals are activated or the
steering wheel is at a turning angle.
.The vehicle speed is below 40 km/h
(25 mph).
Interior Lighting
Instrument Panel
Illumination Control
This feature adjusts the brightness of
all illuminated controls.
D:Move the thumbwheel up or
down to brighten or dim the lights.
The thumbwheel is functional at
night, or when the headlamps or
parking lamps are ON.
The brightness of the displays
automatically adjusts based on
outdoor lighting.
Courtesy Lamps
The courtesy lamps come on when
any door is opened,
Kon the remote
key is pressed, or when the ignition is
switched off. See Dome Lamps0132.
Dome Lamps
The dome lamp controls are in the
overhead console.
To operate, press the following
buttons:
jOFF : Press to turn off the dome
lamps when any door is opened,
Kon
the remote key is pressed, or when the
ignition is switched off. An indicator

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
LIGHTING 133
light on the button will turn on when
the dome lamp override is activated.
Press
jOFF again to deactivate
this feature and the indicator light will
turn off. The dome lamps will come
on when doors are opened,
Kon the
remote key is pressed, or the ignition
is switched off.
+ON/OFF : Press to turn the dome
lamps on and off manually.
Reading Lamps
There are front and rear reading
lamps on the overhead console and
over the rear passenger doors. These
lamps will come on when any door is
opened,
Kon the remote key is
pressed, or when the vehicle is
turned off.
To operate, the vehicle must be on, in
Accessory mode, or using Retained
Accessory Power (RAP).
To manually turn the reading lamps
on or off:
Press the lamp lenses on the front
reading lamps.
Press the lamp lenses over the rear
passenger doors.
Lighting Features
Entry Lighting
The interior lamps turn on when
pressing
Kon the remote key or
opening any doors, and the dome
lamp control is in the DOOR position.
Some exterior lamps also turn on
when pressing
Kon the remote key or
opening any doors. Low-Beam lamps
will only turn on briefly at night, or in
areas with limited lighting.
All lamps will gradually fade out after
about 30 seconds.
Entry lighting can be disabled
manually by closing all doors, pressing
Qon the remote key, or starting the
vehicle.
This feature can be changed. See
“Vehicle Locator Lights” underVehicle
Personalization 0120.
Approach Detection
If equipped, the entry lighting feature
will automatically turn on when the
remote key is detected within
approximately 2 m (6 ft) of the vehicle.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
134 LIGHTING
If the vehicle has remained parked for
an extended period of time with no
remote key use or keyless access
operation, approach detection will be
disabled. To reactivate, press any
button on the remote key or open and
close all vehicle doors to re-enable the
entry lighting feature on approach.
Exit Lighting
Some exterior lamps and interior
lamps turn on when the driver door is
opened after the ignition is turned off.
The interior lights turn on when the
ignition is turned off.
The exterior and interior lamps
remain on for a set amount of time,
then automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
This feature can be changed. See
Vehicle Personalization0120.
Battery Load Management
The vehicle has Electric Power
Management (EPM), which estimates
the battery's temperature and state of
charge. It then adjusts the voltage for
best performance and extended life of
the battery.
When the battery's state of charge is
low, the voltage is raised slightly to
quickly bring the charge back up.
When the state of charge is high, the
voltage is lowered slightly to prevent
overcharging. If the vehicle has a
voltmeter gauge or a voltage display
on the Driver Information Center
(DIC), you may see the voltage move
up or down. This is normal. If there is
a problem, an alert will be displayed.
The battery can be discharged at idle
if the electrical loads are very high.
This is true for all vehicles. This is
because the generator (alternator)
may not be spinning fast enough at
idle to produce all the power that is
needed for very high electrical loads. A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog lamps,
rear window defogger, climate control
fan at high speed, heated seats, engine
cooling fans, and loads plugged into
accessory power outlets.
EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.
It can increase engine idle speed to
generate more power, whenever
needed. It can temporarily reduce the
power demands of some accessories.
Normally, these actions occur in steps
or levels, without being noticeable. In
rare cases at the highest levels of
corrective action, this action may be
noticeable to the driver. If so, a DIC
message might be displayed. If a
battery message is displayed, it is
recommended that the driver reduce
the electrical loads as much as
possible. See
Driver Information Center
(DIC) (Base Level) 0109 or
Driver Information Center (DIC)
(Uplevel) 0112.