2018 CHEVROLET IMPALA change key battery

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
144 Lighting
Lighting Features
Entry Lighting
Some exterior lamps and most of
the interior lamps turn on briefly at
night or in areas with limited lighting
when the Remote Keyless Entry
(RKE) transmitter
Kbutton is
pressed. See Remote Keyless Entry
(RKE) System Operation 028. After
about 30 seconds the exterior lamps
turn off, then the dome lamps and
remaining interior lamps dim to off.
Entry lighting can be disabled
manually by turning the ignition on
or to ACC/ACCESSORY, or by
pressing
Qon the RKE transmitter.
This feature can be changed. See
Vehicle Personalization 0128.
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
0128.
Battery Load
Management
The vehicle has Electric Power
Management (EPM) that 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 of the
power needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, rear
window defogger, climate control fan
at high speed, heated seats, engine
cooling fans, trailer loads, 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.
It can increase engine idle speed to
generate more power whenever
needed. It can temporarily reduce
the power demands of some
accessories.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Driving and Operating 169
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 0169. 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 ENGINE
START/STOP 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
ENGINE START/STOP 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
resulting damage would not be
(Continued)
Caution (Continued)
covered by the vehicle warranty.
SeeAdd-On Electrical Equipment
0 211.
Starting Procedure 1. The Remote Keyless Entry (RKE) transmitter must
be in the vehicle. Press
ENGINE START/STOP with the
brake pedal applied. The
engine will continue cranking
until it starts.
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)
message will display. See
Driver Information Center (DIC)
0125.

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
338 Index
J
Jump Starting - NorthAmerica . . . . . . . . . . . . . . . . . . . . . . . 276
K
Keyless EntryRemote (RKE) System . . . . . . . . . 28
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
L
Labeling, Tire Sidewall . . . . . . . . . . 251
Lamps Courtesy . . . . . . . . . . . . . . . . . . . . . . 142
Daytime Running (DRL) . . . . . . 140
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 143
Exterior Controls . . . . . . . . . . . . . . 139
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 140
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . 145
License Plate . . . . . . . . . . . . . . . . . 241
Malfunction Indicator
(Check Engine) . . . . . . . . . . . . . .118
On Reminder . . . . . . . . . . . . . . . . . 124
Reading . . . . . . . . . . . . . . . . . . . . . . 143
Lane Change Alert (LCA) . . . . . . . 198
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 200 Lane Departure Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Lap-Shoulder Belt . . . . . . . . . . . . . . . 64
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . 93
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . 87
LED Lighting . . . . . . . . . . . . . . . . . . . . 238
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . 144
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Illumination Control . . . . . . . . . . . 142
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Lights Airbag Readiness . . . . . . . . . . . . . .116
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 121
Brake System Warning . . . . . . . .119
Charging System . . . . . . . . . . . . . .117
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . .118
Cruise Control . . . . . . . . . . . . . . . . 124
Door Ajar . . . . . . . . . . . . . . . . . . . . . 125
Electric Parking Brake . . . . . . . . 120
Engine Oil Pressure . . . . . . . . . . 123
Flash-to-Pass . . . . . . . . . . . . . . . . . 140
High-Beam On . . . . . . . . . . . . . . . . 124 Lights (cont'd)
High/Low Beam Changer . . . . . 140
Lane Departure Warning . . . . . . 121
Low Fuel Warning . . . . . . . . . . . . 123
Seat Belt Reminders . . . . . . . . . . .115
Security . . . . . . . . . . . . . . . . . . . . . . 124
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 120
StabiliTrak OFF . . . . . . . . . . . . . . . 122
Tire Pressure . . . . . . . . . . . . . . . . . 122
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . 122
Traction Off . . . . . . . . . . . . . . . . . . . 121
Locks
Automatic Door . . . . . . . . . . . . . . . . . 38
Delayed Locking . . . . . . . . . . . . . . . . 38
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Lockout Protection . . . . . . . . . . . . . . 38
Power Door . . . . . . . . . . . . . . . . . . . . . 38
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Loss of Control . . . . . . . . . . . . . . . . . 160
Low Fuel Warning Light . . . . . . . . . 123
Low-Profile Tires . . . . . . . . . . . . . . . . 250
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 87
Lumbar Adjustment . . . . . . . . . . . . . . 55 Front Seats . . . . . . . . . . . . . . . . . . . . . 55