2021 CADILLAC CT4 battery

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
INSTRUMENTS AND CONTROLS 123
reverse feature. This includes any
garage door opener model
manufactured before April 1, 1982.
Read these instructions completely
before programming the Universal
Remote system. It may help to have
another person assist with the
programming process.
Keep the original hand-held
transmitter for use in other vehicles
as well as for future programming.
Erase the programming when vehicle
ownership is terminated. See“Erasing
Universal Remote System Buttons”
later in this section.
To program a garage door opener,
park outside directly in line with and
facing the garage door opener receiver.
Clear all people and objects near the
garage door.
Make sure the hand-held transmitter
has a new battery for quick and
accurate transmission of the
radio-frequency signal.Programming the Universal
Remote System
For questions or programming help,
see www.homelink.com/gm or call
1-800-355-3515. For calls placed
outside the U.S., Canada, or Puerto
Rico, international rates will apply and
may differ based on landline or mobile
phone.
Programming involves time-sensitive
actions, and may time out causing the
procedure to be repeated.
To program up to three devices:
1. Hold the end of the hand-held transmitter about 3 to 8 cm (1 to
3 in) away from the Universal
Remote system buttons with the
indicator light in view. The
hand-held transmitter was supplied
by the manufacturer of the garage
door opener receiver.
2. At the same time, press and hold both the hand-held transmitter
button and one of the three
Universal Remote system buttons
to be used to operate the garage
door. Do not release either button until the indicator light changes
from a slow to a rapid flash. Then
release both buttons.
Some garage door openers may
require substitution of Step 2 with
the procedure under
“Radio Signals
for Some Gate Operators ”later in
this section.
3. Press and hold the newly programmed Universal Remote
system button for five seconds
while watching the indicator light
and garage door activation.
.If the indicator light stays on
continuously or the garage door
moves when the button is
pressed, then programming is
complete. There is no need to
complete Steps 4–6.
.If the indicator light does not
come on or the garage door does
not move, a second button press
may be required. For a second
time, press and hold the newly
programmed button for
five seconds. If the light stays
on or the garage door moves,
programming is complete.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
126 LIGHTING
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . 126
Exterior Lamps Off Reminder . . . 128
Headlamp High/Low-BeamChanger . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . 128
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 128
Automatic Headlamp System . . . 128
Hazard Warning Flashers . . . . . . . . 129
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Cornering Lamps . . . . . . . . . . . . . . . . . 130
Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Courtesy Lamps . . . . . . . . . . . . . . . . . . 130
Dome Lamps . . . . . . . . . . . . . . . . . . . . . 130
Reading Lamps . . . . . . . . . . . . . . . . . . . 131
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . 131
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . 132
Battery Load Management . . . . . . 132
Battery Power Protection . . . . . . . . 133
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
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-14584335) -
2021 - CRC - 11/23/20
132 LIGHTING
Entry Lighting with Approach
Detection
If equipped with approach detection,
the entry lighting feature will
automatically turn on when the
remote key is detected within
approximately 2 m (6 ft) of the vehicle.
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.
Approach detection will not work if:
.The vehicle battery is low.
.The ignition is on or in ACC/
ACCESSORY.
.Entry lighting is set to Off. See
“Vehicle Locator Lights”under
Vehicle Personalization 0117.
Approach detection will not work with
a single remote key if:
.The remote key is left within a 5 m
(16 ft) range of the vehicle for
several minutes
.The remote key is left inside the
vehicle and all the doors are closed
To help maximize remote key battery
life, do not store the remote key
within 5 m (16 ft) of the vehicle.
Exit Lighting
Some exterior lamps come on at night,
or in areas with limited lighting, when
the driver door is opened after the
ignition is turned off.
The dome lamp comes on after the
ignition is turned off or any door is
opened. The exterior lamps and dome
lamp remain on after the door is
closed for a set amount of time, then
automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
The exit lighting for exterior lights can
be changed. See Vehicle Personalization
0 117.
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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
LIGHTING 133
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. SeeDriver Information Center
(DIC) (Base Level) 0107 or
Driver Information Center (DIC)
(Uplevel) 0110.Battery Power Protection
The battery saver feature is designed
to protect the vehicle's battery.
If some interior lamps are left on and
the ignition is turned off, the battery
rundown protection system
automatically turns the lamp off after
some time.
Exterior Lighting Battery
Saver
The exterior lamps turn off about
10 minutes after the ignition is turned
off, if the parking lamps or headlamps
have been manually left on. This
protects against draining the battery.
To restart the 10-minute timer, turn
the exterior lamp control to the
O
position and then back to the;or
2position.
To keep the lamps on for more than
10 minutes, the ignition must be on or
in ACC/ACCESSORY.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
162 INFOTAINMENT SYSTEM
For more information if the GPS is not
functioning properly, seeProblems
with Route Guidance 0162 and
If the System Needs Service 0163.
Vehicle Positioning
At times, the position of the vehicle
on the map could be inaccurate due to
one or more of the following reasons:
.The road system has changed.
.The vehicle is driving on slippery
road surfaces such as sand, gravel,
or snow.
.The vehicle is traveling on winding
roads or long, straight roads.
.The vehicle is approaching a tall
building or a large vehicle.
.The surface streets run parallel to a
freeway.
.The vehicle has been transferred by
a vehicle carrier or a ferry.
.The current position calibration is
set incorrectly.
.The vehicle is traveling at high
speed.
.The vehicle changes directions more
than once, or the vehicle is turning
on a turn table in a parking lot.
.The vehicle is entering and/or
exiting a parking lot, garage, or a lot
with a roof.
.The GPS signal is not received.
.A roof carrier is installed on the
vehicle.
.Tire chains are installed on the
vehicle.
.The tires are replaced or worn.
.The tire pressure for the tires is
incorrect.
.This is the first navigation use after
the map data is updated.
.The 12-volt battery has been
disconnected for several days.
.The vehicle is driving in heavy
traffic where driving is at low
speeds, and the vehicle is stopped
and started repeatedly.
Problems with Route
Guidance
Inappropriate route guidance can
occur under one or more of the
following conditions:
.The turn was not made on the road
indicated.
.Route guidance might not be
available when using automatic
rerouting for the next right or
left turn.
.The route might not be changed
when using automatic rerouting.
.There is no route guidance when
turning at an intersection.
.Plural names of places might be
announced occasionally.
.It could take a long time to operate
automatic rerouting during
high-speed driving.
.Automatic rerouting might display a
route returning to the set waypoint
if heading for a destination without
passing through a set waypoint.
.The route prohibits the entry of a
vehicle due to a regulation by time
or season or any other regulation
which may be given.
.Some routes might not be searched.
.The route to the destination might
not be shown if there are new roads,
if roads have recently changed, or if
certain roads are not listed in the
map data. See Maps0153.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
214 DRIVING AND OPERATING
To save fuel, run the engine for short
periods to warm the vehicle and then
shut the engine off and partially close
the window. Moving about to keep
warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle speed.
This keeps the battery charged to
restart the vehicle and to signal for
help with the headlamps. Do this as
little as possible, to save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels
to free the vehicle when stuck in sand,
mud, ice, or snow.
If stuck too severely for the traction
system to free the vehicle, turn the
traction system off and use the
rocking method. SeeTraction Control/
Electronic Stability Control 0239.
{Warning
If the vehicle's tires spin at high
speed, they can explode, and you or
others could be injured. The vehicle
can overheat, causing an engine
compartment fire or other damage.
Spin the wheels as little as possible
and avoid going above 56 km/h
(35 mph).
Rocking the Vehicle to Get it Out
Turn the steering wheel left and right
to clear the area around the front
wheels. Turn off any traction system.
Shift back and forth between
R (Reverse) and a low forward gear,
spinning the wheels as little as
possible. To prevent transmission
wear, wait until the wheels stop
spinning before shifting gears. Release
the accelerator pedal while shifting,
and press lightly on the accelerator
pedal when the transmission is in
gear. Slowly spinning the wheels in
the forward and reverse directions
causes a rocking motion that could
free the vehicle. If that does not get
the vehicle out after a few tries, it might need to be towed out. If the
vehicle does need to be towed out, see
Towing the Vehicle
0369.
Vehicle Load Limits
It is very important to know how
much weight the vehicle can carry.
This weight is called the vehicle
capacity weight and includes the
weight of all occupants, cargo, and
all nonfactory-installed options.
Two labels on the vehicle may
show how much weight it may
properly carry: the Tire and
Loading Information label and the
Certification label.
{Warning
Do not load the vehicle any
heavier than the Gross Vehicle
Weight Rating (GVWR),
or either the maximum front or
rear Gross Axle Weight Rating
(GAWR). This can cause
systems to break and change
the way the vehicle handles.
(Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
220 DRIVING AND OPERATING
{Warning
Turning off the vehicle while
moving may cause loss of power
assist in the brake and steering
systems and disable the airbags.
While driving, only shut the vehicle
off in an emergency.
If the vehicle cannot be pulled over,
and must be shut off while driving,
press and hold the ENGINE START/
STOP button for longer than
two seconds, or press twice in
five seconds.
ACC/ACCESSORY (Amber Indicator
Light) : This mode allows you to use
some electrical accessories when the
engine is off.
With the ignition off, pressing the
button one time without the brake
pedal applied will place the ignition
system in ACC/ACCESSORY.
The ignition will switch from ACC/
ACCESSORY to OFF after five minutes
to prevent battery rundown. ON/RUN/START (Green Indicator
Light) :
This mode is for driving and
starting. With the ignition off, and the
brake pedal applied, pressing the
button once will place the ignition
system in ON/RUN/START. Once
engine cranking begins, release the
button. Engine cranking will continue
until the engine starts. See Starting the
Engine 0220. The vehicle will then
remain on.
Service Mode
This power mode is available for
service and diagnostics, and to verify
the proper operation of the
malfunction indicator lamp as may be
required for emission inspection
purposes. With the vehicle off, and the
brake pedal not applied, pressing and
holding the button for more than
five seconds will place the vehicle in
Service Mode. The instruments and
audio systems will operate as they do
in ON/RUN, but the vehicle will not be
able to be driven. The engine will not
start in Service Mode. Press the
button again to turn the vehicle off.
Starting the Engine
Place the transmission in the
proper gear
Caution
If you add electrical parts or
accessories, you could change the
way the engine operates. Any
resulting damage would not be
covered by the vehicle warranty. See
Add-On Electrical Equipment 0303.
Move the shift lever to P (Park) or
N (Neutral). To restart the vehicle
when it is already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park) if the
vehicle is moving. If you do, you
could damage the transmission.
Shift to P (Park) only when the
vehicle is stopped.
Starting the Vehicle 1. Press the brake pedal, then press ENGINE START/STOP on the
instrument panel.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 221
If the remote key is not in the
vehicle, if there is interference, or if
the remote key battery is low, a
Driver Information Center (DIC)
message will display. SeeRemote
Keyless Entry (RKE) System
Operation 07.
Caution
Cranking the engine for long
periods of time, by pressing
ENGINE START/STOP immediately
after cranking has ended, can
overheat and damage the cranking
motor, and drain the battery. Wait
at least 15 seconds between each
try, to let the cranking motor
cool down.
2. If the engine does not start after five to 10 seconds, especially in
very cold weather (below −18 °C or
0 °F), it could be flooded with too
much gasoline. Try pushing the
accelerator pedal all the way to the
floor and hold it there, then press
ENGINE START/STOP for up to a
maximum of 15 seconds. Wait at
least 15 seconds between each try,
to allow the cranking motor to cool down. When the engine starts, let
go of the button and the
accelerator. If the vehicle starts
briefly but then stops again, do the
same thing. This clears the extra
gasoline from the engine. Do not
race the engine immediately after
starting it. Operate the engine and
transmission gently until the oil
warms up and lubricates all
moving parts.
Stopping the Engine
Move the shift lever to P (Park) and
press and hold ENGINE START/STOP
on the instrument panel, until the
engine shuts off. If the shift lever is
not in P (Park), the engine shuts off
and the ignition goes to ACC/
ACCESSORY. The DIC displays SHIFT
TO PARK. Once the shift lever is
moved to P (Park), the vehicle
turns off.
If the remote key is not detected
inside the vehicle when it is turned off
the DIC displays a message.
Stop/Start System
The Stop/Start system will shut off
the engine to help conserve fuel.
It has components designed for the
increased number of starts.
{Warning
The automatic engine Stop/Start
feature causes the engine to shut
off while the vehicle is still on. Do
not exit the vehicle before shifting
to P (Park). The vehicle may restart
and move unexpectedly. Always
shift to P (Park), and then turn the
ignition off before exiting the
vehicle.
Auto Engine Stop/Start
When the brakes are applied and the
vehicle is at a complete stop, the
engine may turn off. When stopped,
the tachometer displays AUTO STOP.
See Tachometer 093. When the brake
pedal is released or the accelerator
pedal is pressed, the engine will
restart.