2021 CADILLAC CT5 change key battery

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
138 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.
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 0123.
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
0 123.
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.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
ONSTAR 415
.Obtain and customize the Wi-Fi
hotspot name or SSID and
password, if equipped.
Press
Qto connect to an Advisor to:
.Verify account information or
update contact information.
.Get driving directions.
.Receive a Diagnostic check of the
vehicle's key operating systems.
.Receive Roadside Service.
.Manage Wi-Fi Settings, if equipped.
Press
>to get a priority connection
to an OnStar Advisor available 24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or respond to
an AMBER Alert.
.Get assistance in severe weather or
other crisis situations and find
evacuation routes.
OnStar Services
Emergency
Emergency Services require an active
safety and security plan. With
Automatic Crash Response, built-in
sensors can automatically alert a specially trained OnStar Advisor who
is immediately connected in to the
vehicle to help.
Press
>for a priority connection to
an OnStar Advisor who can contact
emergency service providers, direct
them to your exact location, and relay
important information.
With OnStar Crisis Assist, specially
trained Advisors are available
24 hours a day, 7 days a week, to
provide a central point of contact,
assistance, and information during a
crisis.
With Roadside Service, Advisors can
locate a nearby service provider to
help with a flat tire, a battery jump,
or an empty gas tank.
Security
If equipped, OnStar provides these
services:
.With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
.With Remote Ignition Block,
if equipped, OnStar can block the
engine from being restarted.
.With Stolen Vehicle Slowdown,
if equipped, OnStar can work with
law enforcement to gradually slow
the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the vehicle.
OnStar Additional
Information
In-Vehicle Audio Messages
Audio messages may play important
information at the following times:
.Prior to vehicle purchase. PressQ
to set up an account.
.After change in ownership and at
90 days.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-14584312) -
2021 - CRC - 11/23/20
INDEX 427
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 28
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
High-Beam On Light . . . . . . . . . . . . . . . . 111
High-Speed Operation . . . . . . . . . . . . . . 350
Hill and Mountain Roads . . . . . . . . . . 217
Hill Start Assist (HSA) . . . . . . . . . . . . . 239
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
How to Wear Seat Belts Properly . . . 47
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
I
If the System Needs Service . . . . . . . 169
Ignition Positions . . . . . . . . . . . . . . . . . . . 224
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . 108
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 108
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Information Publication Ordering . . . . . . . . . . . . . 410
Infotainment System . . . . . . . . . . . . . . . 413
Instrument Cluster . . . . . . . . . . . . . . 94, 96 Instrument Panel Overview . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . 29
Introduction . . . . . . . . . . . . . . . . . . . . . . 1, 140
J
Jump Starting - North America . . . . 368
K
Keyless Entry
Remote (RKE) System . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 345
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Daytime Running (DRL) . . . . . . . . . . 134
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Exterior Controls . . . . . . . . . . . . . . . . . . 132
Exterior Lamps Off Reminder . . . . 134
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 103
On Reminder . . . . . . . . . . . . . . . . . . . . . . 112
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Lane Change Alert (LCA) . . . . . . . . . . . 291
Lane Keep Assist (LKA) . . . . . . . . . . . . 293 Lane Keep Assist Light . . . . . . . . . . . . . 107
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 49
LATCH System
Replacing Parts after a Crash . . . . . 78
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . 72
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 334
Light
Performance Shifting . . . . . . . . . . . . . 107
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Illumination Control . . . . . . . . . . . . . . 136
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Lights Airbag Readiness . . . . . . . . . . . . . . . . . 102
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . 106
Automatic Vehicle Hold . . . . . . . . . . 107
Brake System Warning . . . . . . . . . . . 105
Charging System . . . . . . . . . . . . . . . . . . 103
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 103
Cruise Control . . . . . . . . . . . . . . . . . . . . . 112
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Driver Mode Control . . . . . . . . . . . . . . 109
Electric Parking Brake . . . . . . . . . . . . 106