2018 CADILLAC CTS change key battery

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
46 KEYS, DOORS, AND WINDOWS
The power sounder provides an
audible alarm which is distinct from
the vehicle’s horn. It has its own
power source, and can sound an alarm
if the vehicle’s battery is
compromised.
The inclination sensor can set off the
alarm if it senses movement of the
vehicle, such as a change in vehicle
orientation.
Immobilizer
SeeRadio Frequency Statement 0367.
Immobilizer Operation
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the vehicle is
turned off.
The immobilization system is
disarmed when the ignition is turned
on or to ACC/ACCESSORY and a valid
transmitter is present in the vehicle.
The security light, in the instrument
cluster, comes on if there is a problem
with arming or disarming the
theft-deterrent system.
The system has one or more RKE
transmitters matched to an
immobilizer control unit in the
vehicle. Only a correctly matched RKE
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 or in the
transmitter pocket, the 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 030.
Do not leave the key or device that
disarms or deactivates the
theft-deterrent system in the vehicle.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
LIGHTING 159
Press the lamp lenses over the rear
passenger doors.
Lighting Features
Entry Lighting
Some exterior lamps and most of the
interior lights turn on briefly at night
when
Kis pressed on the Remote
Keyless Entry (RKE) transmitter. See
Remote Keyless Entry (RKE) System
Operation 030. After about 30 seconds
the exterior lamps turn off, then the
remaining interior lights dim to off.
Entry lighting can be disabled
manually by turning the ignition on or
to ACC/ACCESSORY, or by pressing
Q
on the RKE transmitter.
This feature can be turned on or off.
See “Vehicle Locator Lights” under
Vehicle Personalization 0144.
Exit Lighting
Some exterior lamps and interior
lights 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. The
exterior lamps and dome lamp remain
on for a set amount of time, then
automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
This feature can be changed. See
Vehicle Personalization 0144.
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.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
194 DRIVING AND OPERATING
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 0194. The ignition will then
remain in ON/RUN.
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
Move the shift lever to P (Park) or
N (Neutral). To restart the engine
when the vehicle 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.
Caution
If you add electrical parts or
accessories, you could change the
way the engine operates. Any
(Continued)
Caution (Continued)
resulting damage would not be
covered by the vehicle warranty. See
Add-On Electrical Equipment 0251.
Starting Procedure 1. With the Keyless Access system, the Remote Keyless Entry (RKE)
transmitter must be in the
vehicle. Press ENGINE START/
STOP with the brake pedal
applied. When the engine begins
cranking, let go of the button.
The idle speed will go down as
the engine gets warm. Do not
race the engine immediately
after starting it.
If the RKE transmitter is not in
the vehicle, if there is
interference, or if the RKE
battery is low, a Driver
Information Center (DIC) will
display a message. See Remote
Keyless Entry (RKE) System
Operation 030.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
INDEX 387
K
Keyless EntryRemote (RKE) System . . . . . . . . . . . . . . 30
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 297
Lamps Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Daytime Running (DRL) . . . . . . . . . . 155
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Exterior Controls . . . . . . . . . . . . . . . . . . 153
Exterior Lamps Off Reminder . . . . 155
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
License Plate . . . . . . . . . . . . . . . . . . . . . . 284
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 128
On Reminder . . . . . . . . . . . . . . . . . . . . . . 136
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Lane Change Alert (LCA) . . . . . . . . . . . 236
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . . . . 238
Lane Keep Assist (LKA) . . . . . . . . . . . . 239
Lane Keep Assist Light . . . . . . . . . . . . . 131
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 71
LATCH System
Replacing Parts after a Crash . . . . 100 LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . . . . 95
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 283
Light, Auto Stop Mode . . . . . . . . . . . . . 135
Lighting Adaptive Forward . . . . . . . . . . . . . . . . . 156
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Illumination Control . . . . . . . . . . . . . . 158
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Lights
Adaptive Forward Lighting(AFL) Light . . . . . . . . . . . . . . . . . . . . . . 135
Airbag Readiness . . . . . . . . . . . . . . . . . 126
Antilock Brake System (ABS) Warning . . . . . . . . . . . . . . . . . . . . . . . . . 131
Brake System Warning . . . . . . . . . . . 129
Charging System . . . . . . . . . . . . . . . . . . 127
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 128
Cruise Control . . . . . . . . . . . . . . . . . . . . . 136
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Driver Mode Control . . . . . . . . . . . . . . 133
Electric Parking Brake . . . . . . . . . . . . 130
Engine Coolant Temperature
Warning . . . . . . . . . . . . . . . . . . . . . . . . . 133
Engine Oil Pressure . . . . . . . . . . . . . . . 134
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 155 Lights (cont'd)
High-Beam On . . . . . . . . . . . . . . . . . . . . 135
High/Low Beam Changer . . . . . . . . . 155
Lane Keep Assist . . . . . . . . . . . . . . . . . . 131
Low Fuel Warning . . . . . . . . . . . . . . . . 134
Seat Belt Reminders . . . . . . . . . . . . . . 125
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Service Electric Parking Brake . . . 130
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 132
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 133
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . . . 132
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 132
Limited-Slip Differential . . . . . . . . . . . . 214
Locks
Automatic Door . . . . . . . . . . . . . . . . . . . . . 41
Delayed Locking . . . . . . . . . . . . . . . . . . . . 40
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Lockout Protection . . . . . . . . . . . . . . . . . 41
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 180
Low Fuel Warning Light . . . . . . . . . . . 134
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . 296
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . 95
Lumbar Adjustment . . . . . . . . . . . . . . . . . 60 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 60