2018 CADILLAC CT6 service

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
IN BRIEF 29
{Danger
Improper use of portable electric
vehicle charge cords may cause a
fire, electrical shock, or burns, and
may result in damage to property,
serious injury, or death.. Do not use extension cords,
multi-outlet power strips,
splitters, grounding adaptors,
surge protectors, or similar
devices.
. Do not use an electrical outlet
that is worn or damaged,
or will not hold the plug
firmly in place.
. Do not use an electrical outlet
that is not properly grounded.
. Do not use an electrical outlet
that is on a circuit with other
electrical loads.
Charge Cord Status Indicators
See Charge Cord (PLUG-IN Only) 0279.
Charge Level Selection
Charge level selection can be made
using the Charge Limit Preference
screen on the infotainment display.
See “Charge Limit Selection ”under
Programmable Charging (PLUG-IN Only)
0 152.
{Warning
Using a charge level that exceeds
the electrical circuit or electrical
outlet capacity may start a fire or
damage the electrical circuit. Use
the lowest charge level until a
qualified electrician inspects the
electrical circuit capacity. Use the
lowest charge level if the electrical
circuit or electrical outlet capacity
is not known.
Regenerative Braking
Regenerative braking takes some of
the energy from the moving vehicle
and turns it back into electrical
energy. This energy is then stored in
the high voltage battery system, contributing to increased energy
efficiency. See
Regenerative Braking
(PLUG-IN Only) 0237.
Service
{Warning
Never try to do your own service on
high voltage components. You can
be injured and the vehicle can be
damaged if you try to do your own
service work. Service and repair of
these high voltage components
should only be performed by a
trained service technician with the
proper knowledge and tools. See
Doing Your Own Service Work 0298.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
IN BRIEF 33
Climate Setting
Using the heat and air conditioning
systems decreases the energy available
for electric driving.
Optimal energy efficiency is achieved
with the heat, air conditioning, and
fan turned off.
Less energy is used at low fan speeds.
Use the heated seat feature and the
heated steering wheel instead of
climate settings. Heating the seat and
steering wheel uses less energy than
heating the vehicle interior.
Use remote start to heat or cool the
interior when the vehicle is plugged in
to maximize the electric range by
utilizing electricity from the electrical
outlet.
In hot weather, avoid parking in direct
sunlight or use sunshades inside the
vehicle.
Turn off the front and rear window
defog/defrost when they are no longer
needed.
Avoid driving with the windows open
at highway speeds.
Vehicle Charging/Maintenance
Charging
Keep the vehicle plugged in, even
when fully charged, to keep the
battery temperature ready for the next
drive. This is important when outside
temperatures are extremely hot
or cold.
Maintenance
Always keep the tires properly inflated
and the vehicle properly aligned.
The weight of excess cargo in the
vehicle affects efficiency and range.
Avoid carrying more than is needed.
If fuel is not regularly used, consider
keeping the fuel tank only one-third
full. Excess fuel weight impacts
efficiency and range.
For fuel recommendations, seeFuel
0 286.
Avoid unnecessary use of electrical
accessories. Power used for functions
other than propelling the vehicle will
reduce EV range. Using a rooftop carrier will reduce
efficiency due to additional weight
and drag.
Roadside Service
U.S.: 1-800-224-1400
Canada: 1-800-882-1112
TTY Users (U.S. Only): 1-888-889-2438
New Cadillac owners are automatically
enrolled in the Roadside Service
Program.
See
Roadside Service 0411.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
KEYS, DOORS, AND WINDOWS 35
This key, inside the Remote Keyless
Entry (RKE) transmitter, is used for
the driver door.To remove the key, press the button
on the side of the transmitter near the
bottom, and pull the key out. Never
pull the key out without pressing the
button.
See your dealer if a new key is needed.
Contact Roadside Service if locked out
of the vehicle. See
Roadside Service
0 411.
With an active OnStar subscription, an
OnStar Advisor may remotely unlock
the vehicle. See OnStar Overview 0421.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement 0417.
If there is a decrease in the Remote
Keyless Entry (RKE) operating range:
. Check the distance. The
transmitter may be too far from
the vehicle.
. Check the location. Other vehicles
or objects may be blocking the
signal.
. Check the transmitter's battery.
See “Battery Replacement ”later in
this section. .
If the transmitter is still not
working correctly, see your dealer
or a qualified technician for
service.
Remote Keyless Entry
(RKE) System Operation
The Keyless Access system allows for
vehicle entry when the transmitter is
within 1 m (3 ft). See “Keyless Access
Operation ”later in this section.
The RKE transmitter may work up to
60 m (197 ft) away from the vehicle.
Keep in mind that other conditions,
such as those previously stated, can
impact the performance of the
transmitter.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
54 KEYS, DOORS, AND WINDOWS
transmitter will start the vehicle.
If the transmitter is ever damaged,
you may not be able to start your
vehicle.
When trying to start the vehicle, the
security light may come on briefly
when the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the vehicle will not change ignition
modes (ACC/ACCESSORY, ON, OFF),
and the RKE transmitter appears to be
undamaged, try another transmitter.
Or, you may try placing the
transmitter in the transmitter pocket
located in the center console.If the ignition modes will not change
with the other transmitter, your
vehicle needs service. If the ignition
does change modes, the first
transmitter may be faulty. See your
dealer.
It is possible for the immobilizer
system to learn new or replacement
RKE transmitters. Up to eight
transmitters can be programmed for
the vehicle. To program additional
transmitters, see
“Programming
Transmitters to the Vehicle ”under
Remote Keyless Entry (RKE) System
Operation 035.
Do not leave the key or device that
disarms or deactivates the
theft-deterrent system in the vehicle.Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you cut
too sharply into the right lane, you
could hit a vehicle on the right.
Check the inside mirror or glance
over your shoulder before changing
lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from the
driver seat.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
KEYS, DOORS, AND WINDOWS 57
To adjust the brightness, press the
button (1) on the back of the rearview
mirror without covering the light
sensor (2).
Each button press cycles the
brightness between five settings.
{Warning
The Rear Camera Mirror (RCM) has
a limited view. Portions of the road,
vehicles, and other objects may not
be seen. Do not drive or park the
vehicle using only this camera.
Objects may appear closer than
they are. Check the outside mirrors
or glance over your shoulder when
making lane changes or merging.
Failure to use proper care may
result in injury, death, or vehicle
damage.
The camera that provides the Rear
Camera Mirror (RCM) image is above
the license plate, next to the Rear
Vision Camera (RVC).
To clean the rear camera, see
Windshield Wiper/Washer0120.
Troubleshooting
If the tab is in the rearward position
and a blue screen and
dare displayed
in the mirror and the display shuts
off, see your dealer for service.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/15/17
72 SEATS AND RESTRAINTS
number that positions were saved to.
Try storing the position to the other
memory button or try the other RKE
transmitter.
Easy Exit Recall
Easy Exit Recall is not linked to an
RKE transmitter. The position stored
to
Bis used for all drivers. To turn
Easy Exit Recall on or off, see "Vehicle
Personalization Settings" previously in
this section and Vehicle Personalization
0 170.
If turned on, the positions saved to
Bare 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 Easy Exit Recall 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
Obstructions
If something has blocked the driver
seat and/or power steering wheel
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 for service.
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 (Continued)
Warning (Continued)
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 ignition must be on.
Press
Jorzto heat the driver or
passenger seat cushion and seatback.
Press
Ior+to heat the driver or
passenger seatback only.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/15/17
82 SEATS AND RESTRAINTS
effectiveness of the seat belt in a
crash. SeeHow to Wear Seat Belts
Properly 079.
Press the release button and move the
height adjuster to the desired position.
The adjuster can be moved up by
pushing the slide/trim up. After the
adjuster is set to the desired position,
try to move it down without pushing
the release button to make sure it has
locked into position.
Automatic Seat Belt Tightening
System
The vehicle may have the Automatic
Seat Belt Tightening System. The system activates during
emergency braking and/or sudden
driving maneuvers and releases when
driving conditions return to normal.
The system will not activate if the
Traction Control/Electronic Stability
Control system is not functioning
properly. See
Traction Control/
Electronic Stability Control 0239.
If there is a problem with the
Automatic Seat Belt Tightening
System, a message displays on the
Driver Information Center (DIC). If a
system unavailable message displays
repeatedly or a service message
displays, see your dealer. Other seat
belt functions are not affected by the
Automatic Seat Belt Tightening
System.
Seat Belt Pretensioners
This vehicle has seat belt
pretensioners for front outboard
occupants. Although the seat belt
pretensioners cannot be seen, they are
part of the seat belt assembly. They
can help tighten the seat belts during
the early stages of a moderate to
severe frontal, near frontal, or rear
crash if the threshold conditions for pretensioner activation are met. Seat
belt pretensioners can also help
tighten the seat belts in a side crash
or a rollover event.
Pretensioners work only once. If the
pretensioners activate in a crash, the
pretensioners and probably other
parts of the vehicle's seat belt system
will need to be replaced. See
Replacing
Seat Belt System Parts after a Crash
0 84.
Do not sit on the outboard seat belt
while entering or exiting the vehicle or
at any time while sitting in the seat.
Sitting on the seat belt can damage
the webbing and hardware.
Rear Seat Belt Comfort Guides
Rear seat belt comfort guides may
provide added seat belt comfort for
older children who have outgrown
booster seats and for some adults.
When installed on a shoulder belt, the
comfort guide positions the belt away
from the neck and head.
Comfort guides are available through
your dealer for the rear outboard
seating positions. Instructions are
included with the guide.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/21/17
90 SEATS AND RESTRAINTS
{Warning
When an airbag inflates, there may
be dust in the air. This dust could
cause breathing problems for
people with a history of asthma or
other breathing trouble. To avoid
this, everyone in the vehicle should
get out as soon as it is safe to do
so. If you have breathing problems
but cannot get out of the vehicle
after an airbag inflates, then get
fresh air by opening a window or a
door. If you experience breathing
problems following an airbag
deployment, you should seek
medical attention.
The vehicle has a feature that may
automatically unlock the doors, turn
on the interior lamps and hazard
warning flashers, and shut off the fuel
system after the airbags inflate. The
feature may also activate, without
airbag inflation, after an event that
exceeds a predetermined threshold.
You can lock the doors, turn off the interior lamps, and turn off the hazard
warning flashers by using the controls
for those features.
{Warning
A crash severe enough to inflate the
airbags may have also damaged
important functions in the vehicle,
such as the fuel system, brake and
steering systems, etc. Even if the
vehicle appears to be drivable after
a moderate crash, there may be
concealed damage that could make
it difficult to safely operate the
vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
PLUG-IN vehicles have a high voltage
battery and a standard 12-volt battery.
If an airbag inflates or the vehicle has
been in a crash, the vehicle's sensing
system may shut down the high
voltage system. When this occurs, the
high voltage battery is disconnected
and the vehicle is not charging the
12-volt battery or the electrical system. The vehicle may start but it
shuts down once the 12-volt battery is
depleted. The airbag readiness light
and/or the 12-volt battery warning
light are displayed. Before the vehicle
can be operated again, it must be
serviced at your dealer.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag.
.
Airbags are designed to inflate
only once. After an airbag inflates,
you will need some new parts for
the airbag system. If you do not
get them, the airbag system will
not be there to help protect you in
another crash. A new system will
include airbag modules and
possibly other parts. The service
manual for the vehicle covers the
need to replace other parts.