heater CADILLAC XT4 2021 Owner's Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
SEATS AND RESTRAINTS 43
The vehicle must be in P (Park) to
start Seat Entry Memory. Seat Entry
Memory recall will complete if the
vehicle is shifted out of P (Park) prior
to reaching the saved memory
position.
To stop Seat Entry Memory recall
movement, turn the vehicle off or
press any of the following controls:
.Power seat
.Memory SET, 1, 2, orB
.Power mirror, with the driver or
passenger side mirror selected
.Power steering wheel, if equipped
If the saved memory seat position
does not automatically recall or recalls
to the wrong positions, the driver’s
RKE transmitter 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 RKE
transmitter.
Seat Exit Memory
Seat Exit Memory is not linked to an
RKE transmitter. The position saved to
Bis used for all drivers. To turn Seat Exit Memory on or off, see "Vehicle
Personalization Settings" previously in
this section and
Vehicle Personalization
0 120.
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, orB
.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,
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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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46 SEATS AND RESTRAINTS
Manually Folding the SeatbacksCaution
Folding a rear seat with the seat
belts still fastened may cause
damage to the seat or the seat
belts. Always unbuckle the seat
belts and return them to their
normal stowed position before
folding a rear seat.
1. Place the front seatbacks in the upright position. See Reclining
Seatbacks 040.
2. Lower the rear head restraint. See Head Restraints 037.
3. Pull on the lever on the top of the
seatback to unlock it and fold the
seatback forward.
For outboard seatbacks, a tab near
the seatback lever moves forward
when the seatback is unlocked.
Raising the Seatbacks
{Warning
If either seatback is not locked, it
could move forward in a sudden
stop or crash. That could cause
injury to the person sitting there.
Always push and pull on the
seatbacks to be sure they are
locked.
{Warning
A seat belt that is improperly
routed, not properly attached,
or twisted will not provide the
protection needed in a crash. The
person wearing the belt could be
seriously injured. After raising the
rear seatback, always check to be
(Continued)
Warning (Continued)
sure that the seat belts are properly
routed and attached, and are not
twisted.
To raise the seatback: 1. Push the seatback rearward until it locks in the upright position.
For outboard seats, a tab near the
seatback lever retracts when the
seatback is locked in place.
2. Make sure the rear seat belts are in the belt guide and are not twisted
or caught between the seat cushion
and the seatback.
Heated Rear Seats
{Warning
If temperature change or pain to
the skin cannot be felt, the seat
heater may cause burns. See the
Warning under Heated and
Ventilated Front Seats 043.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
62 SEATS AND RESTRAINTS
that an infant is present in a child
restraint. If a child restraint has been
installed and the ON indicator is lit:1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such as blankets, cushions,
seat covers, seat heaters, or seat
massagers.
4. Reinstall the child restraint following the directions provided
by the child restraint manufacturer
and refer to Securing Child
Restraints (With the Seat Belt in the
Rear Seat) 079 or
Securing Child Restraints (With the
Seat Belt in the Front Seat) 081.
Make sure the seat belt retractor is
locked by pulling the shoulder belt
all the way out of the retractor
when installing the child restraint,
even if the child restraint is
equipped with a seat belt lock off.
When the retractor lock is set, the
belt can be tightened but not
pulled out of the retractor. 5. If, after reinstalling the child
restraint and restarting the vehicle,
the ON indicator is still lit, turn the
vehicle off. Then slightly recline the
vehicle seatback and adjust the
seat cushion, if adjustable, to make
sure that the vehicle seatback is
not pushing the child restraint into
the seat cushion.
Also make sure the child restraint
is not trapped under the vehicle
head restraint. If this happens,
adjust the head restraint. See Head
Restraints 037.
6. Restart the vehicle.
The passenger sensing system may or
may not turn off the airbag for a child
in a child restraint depending upon
the child’s size. It is better to secure
the child restraint in a rear seat. Never
put a rear-facing child restraint in the
front seat, even if the ON indicator is
not lit.If the Off Indicator Is Lit for an
Adult-Sized Occupant
If a person of adult size is sitting in
the front outboard passenger seat, but
the OFF indicator is lit, it could be
because that person is not sitting
properly in the seat or that the child
restraint locking feature is engaged.
Use the following steps to allow the
system to detect that person and
enable the front outboard passenger
frontal airbag and knee airbag: 1. Turn the vehicle off.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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SEATS AND RESTRAINTS 63
2. Remove any additional materialfrom the seat, such as blankets,
cushions, seat covers, seat heaters,
or seat massagers.
3. Place the seatback in the fully upright position.
4. Have the person sit upright in the seat, centered on the seat cushion,
with legs comfortably extended.
5. If the shoulder portion of the belt is pulled out all the way, the child
restraint locking feature will be
engaged. This may unintentionally
cause the passenger sensing system
to turn the airbag off for some
adult-sized occupants. If this
happens, unbuckle the belt, let the
belt go back all the way, and then
buckle the belt again without
pulling the belt out all the way.
6. Restart the vehicle and have the person remain in this position for
two to three minutes after the ON
indicator is lit.{Warning
If the front outboard passenger
airbag is turned off for an
adult-sized occupant, the airbag will
not be able to inflate and help
protect that person in a crash,
resulting in an increased risk of
serious injury or even death. An
adult-sized occupant should not
ride in the front outboard passenger
seat, if the passenger airbag OFF
indicator is lit.
Additional Factors Affecting
System Operation
Seat belts help keep the passenger in
position on the seat during vehicle
maneuvers and braking, which helps
the passenger sensing system
maintain the passenger airbag status.
See “Seat Belts” and“Child Restraints”
in the Index for additional
information about the importance of
proper restraint use.
A thick layer of additional material,
such as a blanket or cushion,
or aftermarket equipment such as seat
covers, seat heaters, and seat massagers can affect how well the
passenger sensing system operates.
We recommend that you not use seat
covers or other aftermarket equipment
except when approved by GM for your
specific vehicle. See
Adding Equipment
to the Airbag-Equipped Vehicle 064 for
more information about modifications
that can affect how the system
operates.
The ON indicator may be lit if an
object, such as a briefcase, handbag,
grocery bag, laptop, or other electronic
device, is put on an unoccupied seat.
If this is not desired, remove the
object from the seat.{Warning
Stowing articles under the
passenger seat or between the
passenger seat cushion and
seatback may interfere with the
proper operation of the passenger
sensing system.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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64 SEATS AND RESTRAINTS
Servicing the
Airbag-Equipped Vehicle
Airbags affect how the vehicle should
be serviced. There are parts of the
airbag system in several places around
the vehicle. Your dealer and the
service manual have information
about servicing the vehicle and the
airbag system. To purchase a service
manual, seePublication Ordering
Information 0383.
{Warning
For up to 10 seconds after the
vehicle is turned off and the battery
is disconnected, an airbag can still
inflate during improper service. You
can be injured if you are close to an
airbag when it inflates. Avoid
yellow connectors. They are
probably part of the airbag system.
Be sure to follow proper service
procedures, and make sure the
person performing work for you is
qualified to do so.
Adding Equipment to the
Airbag-Equipped Vehicle
Adding accessories that change the
vehicle's frame, bumper system,
height, front end, or side sheet metal
may keep the airbag system from
working properly.
The operation of the airbag system
can also be affected by changing,
including improperly repairing or
replacing, any parts of the following:
.Airbag system, including airbag
modules, front or side impact
sensors, sensing and diagnostic
module, or airbag wiring
.Front seats, including stitching,
seams or zippers
.Seat belts
.Steering wheel, instrument panel,
overhead console, ceiling trim,
or pillar garnish trim
.Inner door seals, including speakers
Your dealer and the service manual
have information about the location of
the airbag modules and sensors, sensing and diagnostic module, and
airbag wiring along with the proper
replacement procedures.
In addition, the vehicle has a
passenger sensing system for the front
outboard passenger position, which
includes sensors that are part of the
passenger seat. The passenger sensing
system may not operate properly if
the original seat trim is replaced with
non-GM covers, upholstery, or trim; or
with GM covers, upholstery, or trim
designed for a different vehicle. Any
object, such as an aftermarket seat
heater or a comfort-enhancing pad or
device, installed under or on top of
the seat fabric, could also interfere
with the operation of the passenger
sensing system. This could either
prevent proper deployment of the
passenger airbag(s) or prevent the
passenger sensing system from
properly turning off the passenger
airbag(s). See
Passenger Sensing
System 060.
If the vehicle has rollover roof-rail
airbags, see Different Size Tires and
Wheels 0326 for additional important
information.

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DRIVING AND OPERATING 203
Driving and
Operating
Driving Information
Driver Behavior . . . . . . . . . . . . . . . . . . . 204
Driving Environment . . . . . . . . . . . . . 204
Vehicle Design . . . . . . . . . . . . . . . . . . . . 204
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . . . . . 205
Distracted Driving . . . . . . . . . . . . . . . . 205
Defensive Driving . . . . . . . . . . . . . . . . 206
Impaired Driving . . . . . . . . . . . . . . . . . 206
Control of a Vehicle . . . . . . . . . . . . . . 206
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Off-Road Recovery . . . . . . . . . . . . . . . . 207
Loss of Control . . . . . . . . . . . . . . . . . . . 208
Off-Road Driving . . . . . . . . . . . . . . . . . 208
Driving on Wet Roads . . . . . . . . . . . 212
Hill and Mountain Roads . . . . . . . . 213
Winter Driving . . . . . . . . . . . . . . . . . . . . 213
If the Vehicle Is Stuck . . . . . . . . . . . 214
Vehicle Load Limits . . . . . . . . . . . . . . 215
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . 219
Ignition Positions . . . . . . . . . . . . . . . . 219
Starting the Engine . . . . . . . . . . . . . . 220
Stop/Start System . . . . . . . . . . . . . . . . 221 Engine Heater . . . . . . . . . . . . . . . . . . . . 222
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . . . 224
Shifting Into Park . . . . . . . . . . . . . . . . 224
Shifting out of Park . . . . . . . . . . . . . . 224
Parking over Things That Burn . . . . . . . . . . . . . . . . . . . . . . . 225
Active Fuel Management . . . . . . . . 225
Extended Parking . . . . . . . . . . . . . . . . . 225
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . 226
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Automatic Transmission
Automatic Transmission . . . . . . . . . 226
Manual Mode . . . . . . . . . . . . . . . . . . . . . 231
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . 232
Brakes
Electric Brake Boost . . . . . . . . . . . . . . 232
Antilock Brake System (ABS) . . . . 232
Electric Parking Brake . . . . . . . . . . . . 233
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . 234
Hill Start Assist (HSA) . . . . . . . . . . . 234
Ride Control Systems
Traction Control/ElectronicStability Control . . . . . . . . . . . . . . . . 235 Driver Mode Control . . . . . . . . . . . . . 236
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . 237
Adaptive Cruise Control
(Advanced) . . . . . . . . . . . . . . . . . . . . . . 240
Driver Assistance Systems
Driver Assistance Systems . . . . . . . 248
Assistance Systems for Parkingor Backing . . . . . . . . . . . . . . . . . . . . . . . 250
Rear Pedestrian Alert . . . . . . . . . . . . 256
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . . . . . 260
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Side Blind Zone Alert (SBZA) . . . . 263
Lane Change Alert (LCA) . . . . . . . . 263
Lane Keep Assist (LKA) . . . . . . . . . . 265
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . 267
Recommended Fuel . . . . . . . . . . . . . . 267
Prohibited Fuels . . . . . . . . . . . . . . . . . . 268
Fuels in Foreign Countries . . . . . . . 268
Fuel Additives . . . . . . . . . . . . . . . . . . . . 268
Filling the Tank . . . . . . . . . . . . . . . . . . 268

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222 DRIVING AND OPERATING
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.
SeeTachometer 0102. When the brake
pedal is released or the accelerator
pedal is pressed, the engine will
restart.
To maintain vehicle performance,
other conditions may cause the engine
to automatically restart before the
brake pedal is released.
Auto Stops may not occur and/or Auto
Starts may occur because:
.The climate control settings require
the engine to be running to cool or
heat the vehicle interior.
.The vehicle battery charge is low.
.The vehicle battery has recently
been disconnected.
.Minimum vehicle speed has not
been reached since the last
Auto Stop.
.The accelerator pedal is pressed.
.The engine or transmission is not at
the required operating temperature.
.The outside temperature is not in
the required operating range.
.The vehicle transmission is shifted
out of D (Drive) to any gear other
than P (Park).
.Driver modes have been selected.
.The vehicle is on a steep hill or
grade.
.The driver door has been opened or
the driver seat belt has been
unbuckled.
.The hood has been opened.
.The Auto Stop has reached the
maximum allowed time.
Auto Stop Disable Switch
The automatic engine Stop/Start
feature can be disabled and enabled
by pressing the switch with the
h
symbol. Auto Stop is enabled each
time you start the vehicle.
When
his illuminated, the system is
enabled.
Engine Heater
The engine heater, if available, can
help in cold weather conditions at or
below −18 °C (0 °F) for easier starting
and better fuel economy during
engine warm-up. Plug in the engine
heater at least four hours before
starting the vehicle. An internal
thermostat in the plug end of the cord
will prevent engine heater operation
at temperatures above −18 °C (0 °F).
{Warning
Do not plug in the engine block
heater while the vehicle is parked in
a garage or under a carport.
Property damage or personal injury
may result. Always park the vehicle
in a clear open area away from
buildings or structures.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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DRIVING AND OPERATING 223
To Use the Engine Heater
1. Turn off the engine.
2. Open the hood and unwrap theelectrical cord. The cord is located
on the passenger side of the
compartment near the air cleaner/
filter.
Check the heater cord for damage.
If it is damaged, do not use it. See
your dealer for a replacement.
Inspect the cord for damage yearly.
3. Plug it into a normal, grounded 110-volt AC outlet.
{Warning
Improper use of the heater cord or
an extension cord can damage the
cord and may result in overheating
and fire.
.Plug the cord into a three-prong
electrical utility receptacle that is
protected by a ground fault
detection function. An
ungrounded outlet could cause
an electric shock.
.Use a weatherproof, heavy-duty,
15 amp-rated extension cord if
needed. Failure to use the
recommended extension cord in
good operating condition,
or using a damaged heater or
extension cord, could make it
(Continued)
Warning (Continued)
overheat and cause a fire,
property damage, electric shock,
and injury.
.Do not operate the vehicle with
the heater cord permanently
attached to the vehicle. Possible
heater cord and thermostat
damage could occur.
.While in use, do not let the
heater cord touch vehicle parts
or sharp edges. Never close the
hood on the heater cord.
.Before starting the vehicle,
unplug the cord, reattach the
cover to the plug, and securely
fasten the cord. Keep the cord
away from any moving parts.
4. Before starting the engine, be sure to unplug and store the cord as it
was before to keep it away from
moving engine parts. If you do not
it could be damaged.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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224 DRIVING AND OPERATING
The length of time the heater should
remain plugged in depends on several
factors. Ask a dealer in the area where
you will be parking the vehicle for the
best advice on this.
Retained Accessory
Power (RAP)
When the ignition is turned from on
to off, the following features (if
equipped) will continue to function
for up to 10 minutes, or until the
driver door is opened. These features
will also work when the ignition is in
RUN or ACC/ACCESSORY:
.Infotainment System
.Power Windows (during RAP this
functionality will be lost when any
door is opened)
.Sunroof (during RAP this
functionality will be lost when any
door is opened)
.Auxiliary Power Outlet
.Audio System
.OnStar System
Shifting Into Park
To shift into P (Park):1. Hold the brake pedal down and set the parking brake. See Electric
Parking Brake 0233.
2. Press the button on top of the shift lever to shift into P (Park). See
Automatic Transmission 0226.
3. The P indicator on the shift lever will turn red when the vehicle is in
P (Park).
Leaving the Vehicle with the
Engine Running
{Warning
It can be dangerous to leave the
vehicle with the engine running.
It could overheat and catch fire.
It is dangerous to get out of the
vehicle if the vehicle is not in
P (Park) with the parking brake set.
The vehicle can roll.
Do not leave the vehicle when the
engine is running. If you have left
the engine running, the vehicle can
(Continued)
Warning (Continued)
move suddenly. You or others could
be injured. To be sure the vehicle
will not move, even when you are
on fairly level ground, always set
the parking brake and shift to
P (Park). SeeShifting Into Park 0224
. If you are towing a trailer, see
Driving Characteristics and Towing
Tips 0271.
If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the parking
brake is set before you leave it. See
Electric Parking Brake 0233.
If you are towing a trailer and parking
on a hill, see Driving Characteristics
and Towing Tips 0271.
Shifting out of Park
This vehicle is equipped with an
electronic transmission. The shift lock
release button is designed to prevent
inadvertent shifting out of P (Park).
To shift out of P (Park):
1. Ensure the engine is running.

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VEHICLE CARE 291
4. Inspect or replace the engine aircleaner/filter.
5. Reverse Steps 1–3 to reinstall the filter cover housing.
6. If equipped, reset the engine air filter life system after replacing the
engine air filter. See Engine Air
Filter Life System 0289.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. Use caution
when working on the engine. Do
not start the engine or drive the
vehicle with the air cleaner/filter
off, as flames may be present if the
engine backfires.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always have
the air cleaner/filter in place when
driving.
Cooling System
The cooling system allows the engine
to maintain the correct working
temperature.
1. Electric Engine Cooling Fan (Out
of View)
2. Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can start
up even when the engine is not
running and can cause injury. Keep
hands, clothing, and tools away
from any underhood electric fan.
{Warning
Do not touch heater or radiator
hoses, or other engine parts. They
can be very hot and can burn you.
Do not run the engine if there is a
leak; all coolant could leak out.
That could cause an engine fire and
can burn you. Fix any leak before
driving the vehicle.
Engine Coolant
The engine cooling system in the
vehicle is filled with DEX-COOL engine
coolant mixture. This coolant needs to
be checked and changed at
appropriate levels. See Recommended
Fluids and Lubricants 0367 and
Maintenance Schedule 0358.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating, see
Engine Overheating 0294.