2020 CADILLAC CT4 climate control

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Keys, Doors, and Windows . . . . . . . . . . 7
Seats and Restraints . . . . . . . . . . . . . . . 33
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Instruments and Controls . . . . . . . . . . 85
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Infotainment System . . . . . . . . . . . . . 133
Climate Controls . . . . . . . . . . . . . . . . . . 134
Driving and Operating . . . . . . . . . . . . 141
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 233
Service and Maintenance . . . . . . . . . 302
Technical Data . . . . . . . . . . . . . . . . . . . . 317
Customer Information . . . . . . . . . . . . 321
Reporting Safety Defects . . . . . . . . . 331
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Connected Services . . . . . . . . . . . . . . . 341
Index . . . . . . . . . . . . . . . . . . . . . . . . 344

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
6 INTRODUCTION
1.Air Vents 0139.
2. Exterior Lamp Controls 0125.
Turn Signal Lever. See Turn and
Lane-Change Signals 0129.
3. Tap Shift Controls (If Equipped). See Manual Mode (Electronic
Shifter) 0177 or
Manual Mode (Mechanical Shifter)
0 176.
4. Cruise Control 0192.
Adaptive Cruise Control 0194 (If
Equipped).
Forward Collision Alert (FCA)
System 0211 (If Equipped).
Heated Steering Wheel 086 (If
Equipped).
5. Instrument Cluster 093.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) 0109.
6. Steering Wheel Controls 086 (If
Equipped). See infotainment
manual.
7. Windshield Wiper/Washer 086.
8. Infotainment 0133. 9. Light Sensor. See
Automatic
Headlamp System 0128.
10. Hazard Warning Flashers 0128.
11. Dual Automatic Climate Control
System 0134.
12. Heated and Ventilated Front Seats
040 (If Equipped).
13. Lane Keep Assist (LKA) 0219 (If
Equipped).
14. Traction Control/Electronic
Stability Control 0182.
Stop/Start Disable Switch. See
Stop/Start System 0161.
Automatic Vehicle Hold (AVH)
0 181.
MODE Button or
«/ªButton
(V-Series Only). See Driver Mode
Control 0184.
15. Wireless Charging Pad (If Equipped) (Out of View). See
Wireless Charging 090.
16. Park Assist Button. See Assistance Systems for Parking or
Backing 0204. 17. Shift Lever. See
Automatic
Transmission (Mechanical Shifter)
0 169 or
Automatic Transmission
(Electronic shifter) 0171.
18. ENGINE START/STOP Button. SeeIgnition Positions 0158.
19. Horn 086.
20. Steering Wheel Adjustment 086.
21. Head-Up Display (HUD) 0111 (If
Equipped).
22. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0100.
23. Instrument Panel Illumination
Control 0129.
24. Hood Release (Out of View). See Hood 0236.
25. Electric Parking Brake 0179 (If
Equipped).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
14 KEYS, DOORS, AND WINDOWS
1. Press the button on the side ofthe remote key near the bottom
and pull the mechanical key out.
Never pull the mechanical key
out without pressing the button.2. Use the mechanical key blade inthe slot to remove the battery
cover by hand.
3. Remove the seal by pulling onthe tab to access the battery.
4. Remove the old battery. Do not use a metal object.
5. Insert the new battery, negative side facing down. Replace with a
CR2450 or equivalent battery.
6. Replace the seal, pushing it into the groove around the battery
compartment.
7. Replace the battery cover by snapping it back into the
remote key.
8. Reinsert the mechanical key.
Remote Vehicle Start
This feature allows the engine to be
started from outside the vehicle.
S: This button on the remote key is
for remote start.
The climate control system will use
the previous settings during a remote
start. The rear window defogger may
come on during remote start based on

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
20 KEYS, DOORS, AND WINDOWS
Without Folding Mirrors
The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.
Press
{ vto activate the safety locks
on the rear doors. The indicator light
in the switch will illuminate when
activated.
The rear door power windows are also
disabled. See Power Windows 029.
Press
{ vagain to deactivate the
safety locks.
If an inside rear door handle is being
pulled at the same time the safety
lock is deactivated, only that door will remain locked and the indicator light
may flash. Release the handle, then
press the safety lock twice to
deactivate the safety locks.
Doors
Trunk
{Warning
Exhaust gases can enter the vehicle
if it is driven with the liftgate or
trunk/hatch open, or with any
objects that pass through the seal
between the body and the trunk/
hatch or liftgate. Engine exhaust
contains carbon monoxide (CO)
which cannot be seen or smelled.
It can cause unconsciousness and
even death.
If the vehicle must be driven with
the liftgate or trunk/hatch open:
. Close all of the windows.
. Fully open the air outlets on
or under the instrument
panel.
. Adjust the climate control
system to a setting that
brings in only outside air and
(Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 21
Warning (Continued)
set the fan speed to the
highest setting. See“Climate
Control Systems” in the Index.
. If the vehicle is equipped with
a power liftgate, disable the
power liftgate function.
See Engine Exhaust 0168.
Manual Trunk
To release the trunk, the vehicle must
be off or the shift lever must be in
P (Park).
.
Press|on the driver door.
. Press
Xtwice quickly on the
remote key.
. Press the touch pad on the rear of
the trunk above the license plate
when all doors are unlocked.
The trunk can be opened while the
vehicle is locked by pressing the touch
pad above the license plate while the
remote key is within 1 m (3 ft) of the
rear of the vehicle. See Remote Keyless
Entry (RKE) System Operation 08.
Close the trunk by pulling on the
handle. Do not use the handle as a
tie-down. Do not press the touch pad
while closing the trunk; this will cause
the trunk lid to be unlatched.
The trunk has an electric latch. If the
vehicle has lost power or the battery
is disconnected, the trunk will not
open. If this happens, use the
emergency trunk release handle.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 27
Resetting the Power Folding
Mirrors
Reset the power folding mirrors if:
.The mirrors are accidentally
obstructed while folding.
. They are accidentally manually
folded/unfolded.
. The mirrors do not stay in the
unfolded position.
. The mirrors vibrate at normal
driving speeds.
Fold and unfold the mirrors one time
using the mirror controls to reset
them to their normal position. A noise
may be heard during the resetting of
the power folding mirrors. This sound
is normal after a manual folding
operation.
Remote Mirror Folding
If equipped with power folding
mirrors, and the mirrors have been
folded with the power folding mirror
switch, they may not be automatically
unfolded by the Remote Mirror
Folding feature. If equipped with power folding
mirrors, and the mirrors have not
been folded with the power folding
mirror switch and the vehicle is in
P (Park), they may be automatically
folded/unfolded as follows:
1. If doors are locked by pressing
H
on the remote key, the mirrors
will fold. If doors are unlocked by
pressing
Ion the remote key,
the mirrors will unfold. See
Remote Keyless Entry (RKE)
System Operation 08.
2. If doors are locked by pressing the door handle lock/unlock
button, the mirrors will fold.
If doors are unlocked by pressing
the door handle button, the
mirrors will unfold. See “Keyless
Unlocking/Locking from the
Driver Door” inRemote Keyless
Entry (RKE) System Operation 08.
3. If passive locking is enabled and doors are locked by that feature,
the mirrors will fold. See “Passive
Locking” inRemote Keyless Entry
(RKE) System Operation 08.
Heated Mirrors
K:The rear window defogger also
heats the outside mirrors.
See Dual Automatic Climate Control
System 0134.
Automatic Dimming Mirror
If the vehicle has the automatic
dimming mirror, the driver outside
mirror automatically adjusts for the
glare of headlamps behind you.
Reverse Tilt Mirrors
If equipped with reverse tilt mirrors
and memory seats, the passenger and/
or driver mirror tilts to a preselected
position when the vehicle is in
R (Reverse). This allows the curb to be
seen when parallel parking. The
mirror(s) may move from their tilted
position when:
.
The vehicle is shifted out of
R (Reverse), or remains in
R (Reverse) for about 30 seconds.
. The ignition is turned off.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
40 SEATS AND RESTRAINTS
remote key number (1 or 2) may not
match the memory button number
that positions were saved to. Try
storing the position to the other
memory button or try the other
remote key.
Seat Exit Memory
Seat Exit Memory is not linked to a
remote key. The position saved to
B
is used for all drivers. To turn Seat
Exit Memory on or off, see "Vehicle
Personalization Settings" previously in
this section andVehicle Personalization
0 116.
If turned on, the position saved to
B
is automatically recalled when one of
the following occurs:
. The vehicle is turned off and the
driver door is opened within a
short time.
. The vehicle is turned off with the
driver door open.
To stop Seat Exit Memory movement,
press any of the following memory
controls:
. Power seat .
Memory SET, 1, 2, or
B
.Power mirror, with the driver or
passenger side mirror selected
. Power steering wheel, if equipped
Obstructions
If something has blocked the driver
seat while recalling a memory
position, the recall may stop. Remove
the obstruction and try the recall
again. If the memory position still
does not recall, see your dealer.
Heated and Ventilated
Front Seats
{Warning
If temperature change or pain to
the skin cannot be felt, the seat
heater may cause burns. To reduce
the risk of burns, use care when
using the seat heater, especially for
long periods of time. Do not place
anything on the seat that insulates
against heat, such as a blanket, (Continued)
Warning (Continued)
cushion, cover, or similar item. This
may cause the seat heater to
overheat. An overheated seat heater
may cause a burn or may damage
the seat.
If equipped, the buttons are near the
climate controls on the center stack.
To operate, the engine must be on.
Press
Jorzto heat the driver or
passenger seat cushion and seatback.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
90 INSTRUMENTS AND CONTROLS
Wireless Charging
The vehicle may have a wireless
charging pad below the climate
controls. The system operates at 145
kHz and wirelessly charges one Qi
compatible smartphone. The power
output of the system is capable of
charging at a rate up to 3 amp (15W),
as requested by the compatible
smartphone. SeeRadio Frequency
Statement 0330.
{Warning
Wireless charging can affect the
operation of an implanted
pacemaker or other medical devices.
If you have one, it is recommended
to consult with your doctor before
using the wireless charging system.
The vehicle must be on, in ACC/
ACCESSORY, or Retained Accessory
Power (RAP) must be active. The
wireless charging feature may not
correctly indicate charging when the
vehicle is in RAP. See Retained
Accessory Power (RAP) 0163. The operating temperature is
−20 °C
(−4 °F) to 60 °C (140 °F) for the
charging system and 0 °C (32 °F) to
35 °C (95 °F) for the smartphone.
{Warning
Remove all objects from the
charging pad before charging your
compatible smartphone. Objects,
such as coins, keys, rings, paper
clips, or cards, between the
smartphone and charging pad will
become very hot. On the rare
occasion that the charging system
does not detect an object, and the
object gets wedged between the
smartphone and charger, remove
the smartphone and allow the
object to cool before removing it
from the charging pad, to prevent
burns.
To charge a compatible smartphone:
1. Remove all objects from the charging pad. The system may
not charge if there are any
objects between the smartphone
and charging pad.
2. Place the smartphone face up on the
@symbol on the
charging pad.
To maximize the charge rate,
ensure the smartphone is fully
seated and centered in the holder
with nothing under it. A thick
smartphone case may prevent
the wireless charger from