2021 CHRYSLER 300 change key battery

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GETTING TO KNOW YOUR VEHICLE
KEYS
KEY FOB
Your vehicle is equipped with a key fob which
supports Passive Entry, Remote Keyless Entry
(RKE), Keyless Enter ‘n Go™ (if equipped), Remote
Start (if equipped), and remote trunk release. The
key fob allows you to lock or unlock the doors and
trunk from distances up to approximately 66
ft
( 2

0 m). The key fob does not need to be pointed at
t h
e vehicle to activate the system. The key fob also
contains an emergency key, which is stored in the
rear of the key fob.
NOTE:
The key fob’s wireless signal may be blocked if
the key fob is located next to a mobile phone,
laptop, or other electronic device. This may
result in poor performance.
With ignition in the ON position and the vehicle
moving at 2 mph (4 km/h), all RKE commands
a r
e disabled.

Key Fob
In case the ignition switch does not change with
t
h

e push of a button, the key fob may have a low or
fully depleted battery. A low key fob battery can be
verified by referring to the instrument cluster,
which will display directions to follow
Ú page 254.
To Lock/Unlock The Doors And Trunk
Push and release the unlock button on the key fob
once to unlock the driver’s door, or twice within five
seconds to unlock all the doors and the trunk. To
lock all the doors and the trunk, push the lock
button once.
When the doors are unlocked, the turn signals will
fl

ash and the illuminated entry system will be
activated. When the doors are locked, the turn
signals will flash and the horn will chirp.
1 — Unlock
2 — Trunk Open
3 — Lock
4 — Remote Start
5 — PANIC Button
6 — Emergency Key

GETTING TO KNOW YOUR VEHICLE 15
If the Vehicle Security Light turns on during normal
vehicle operation (vehicle running for longer than
10 seconds), it indicates that there is a fault in the
electronics. Should this occur, have the vehicle
serviced as soon as possible by an authorized
dealer.
All of the key fobs provided with your new vehicle
ha

ve been programmed to the vehicle electronics
Ú page 254.
IGNITION SWITCH
KEYLESS ENTER ‘N GO™ — IGNITION
This feature allows the driver to operate the
ignition switch with the push of a button as long as
the key fob is in the passenger compartment.
The START/STOP ignition button has several
ope

rating modes that are labeled and will
illuminate when in position. These modes are OFF,
ACC, ON/RUN, and START.
START/STOP Ignition Button

The push button ignition can be placed in the
f ol

lowing modes:
OFF
The engine is stopped.
Some electrical devices (e.g. central locking,
alarm, etc.) are still available.
ACC
Engine is not started.
Some electrical devices are available (e.g.
power windows). ON/RUN

Driving position.
All electrical devices are available (e.g. climate
controls, etc.).
START
The engine will start (when foot is on the brake
pedal).
NOTE:
If the ignition switch does not change the mode by
p u
shing the button, the key fob may have a low or
depleted battery. In this situation, a back up
method can be used to operate the ignition switch.
Put the nose side (side opposite of the emergency
key) of the key fob against the START/STOP
ignition button and push to operate the ignition
switch.

Depleted Key Fob Battery Procedure

CAUTION!
The Sentry Key Immobilizer system is not
compatible with some aftermarket Remote Start
systems. Use of these systems may result in
vehicle starting problems and loss of security
protection.
1 — OFF
2 — ACC
3 — ON/RUN
2

STARTING AND OPERATING 83
NOTE:
For Keyless Enter ‘n Go™ equipped vehicles, the
e n
gine will turn off and the ignition switch will
change to ACC Mode.
If the vehicle is not in PARK and the driver exits the
v e

hicle with the engine running, the vehicle may
AutoPark.
AutoPark will engage when all of these conditions
a r

e met:
Vehicle is equipped with a rotary selector and an
eight speed transmission
Vehicle is not in PARK
Vehicle speed is 1.2 mph (1.9 km/h) or less
Driver’s seat belt is unbuckled
Driver’s door is ajar
Brake pedal is not pressed
The message “ Au
toPark Engaged Shift to P then
Shift to Gear ” will display in the instrument cluster.
NOTE:
In some cases the ParkSense graphic will be
d i
splayed in the instrument cluster. In these cases,
the gear selector must be returned to “P” to select
desired gear.
If the driver shifts into PARK while moving, the
ve
hicle may AutoPark.
AutoPark will engage ON
LY when vehicle speed is
1.2 mph (1.9 km/h) or less. The message “
Ve
hicle Speed is Too High to Shift to
P” will be displayed in the instrument cluster if
vehicle speed is above 1.2 mph (1.9 km/h).
ALWAYS DO A VISUAL CHECK
that your vehicle is in
PARK by looking for the “P” in the instrument
cluster display and near the gear selector. As an
added precaution, always apply the parking brake
when exiting the vehicle.
COLD WEATHER OPERATION
(B
ELOW –22°F OR −30°C)
To ensure reliable starting at these temperatures,
use of an externally powered electric engine block
heater (available from an authorized dealer) is
recommended.
IF ENGINE FAILS TO START
If the engine fails to start after you have followed
the “Normal Starting” or “Cold Weather Operation”
procedure, it may be flooded. Push the accelerator pedal all the way to the floor and hold it there.
Crank the engine for no more than 15 seconds.
This should clear any excess fuel in case the
engine is flooded. Leave the ignition key in the RUN
position, release the accelerator pedal and repeat
the “Normal Starting” procedure.
WARNING!

If vehicle speed is above 1.2
mph (1.9 km/h), the
tr
ansmission will default to NEUTRAL until the
vehicle speed drops below 1.2 mph (1.9 km/h). A
ve

hicle left in the NEUTRAL position can roll. As an
added precaution, always apply the parking brake
when exiting the vehicle.
WARNING!
Never pour fuel or other flammable liquid into
the throttle body air inlet opening in an
attempt to start the vehicle. This could result
in flash fire causing serious personal injury.
Do not attempt to push or tow your vehicle to
get it started. Vehicles equipped with an auto -
matic transmission cannot be started this
w a

y. Unburned fuel could enter the catalytic
converter and once the engine has started,
ignite and damage the converter and vehicle.
If the vehicle has a discharged battery,
booster cables may be used to obtain a start
from a booster battery or the battery in
another vehicle. This type of start can be
dangerous if done improperly
Ú page 186.
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SAFETY 165
NOTE:
After an accident, remember to cycle the ignition to
t h
e STOP (OFF/LOCK) position and remove the key
from the ignition switch to avoid draining the
battery. Carefully check the vehicle for fuel leaks in
the engine compartment and on the ground near
the engine compartment and fuel tank before
resetting the system and starting the engine. If
there are no fuel leaks or damage to the vehicle
electrical devices (e.g. headlights) after an
accident, reset the system by following the
procedure described below. If you have any doubt,
contact an authorized dealer.
Enhanced Accident Response System
Reset Procedure
In order to reset the Enhanced Accident Response
System functions after an event, the ignition switch
must be changed from ignition START or ON/RUN
to ignition OFF. Carefully check the vehicle for fuel
leaks in the engine compartment and on the
ground near the engine compartment and fuel
tank before resetting the system and starting the
engine.
After an accident, if the vehicle will not start after
p e

rforming the reset procedure, the vehicle must
be towed to an authorized dealer to be inspected
and to have the Enhanced Accident Response
System reset.
Maintaining Your Air Bag System Event Data Recorder (EDR)
This vehicle is equipped with an event data
recorder (EDR). The main purpose of an EDR is to
record, in certain crash or near crash-like
situations, such as an air bag deployment or hitting
a road obstacle, data that will assist in
understanding how a vehicle’s systems performed.
The EDR is designed to record data related to
vehicle dynamics and safety systems for a short
period of time, typically 30 seconds or less. The
EDR in this vehicle is designed to record such data
as:
How various systems in your vehicle were oper -
ating;
Whether or not the driver and passenger safety
belts were buckled/fastened;
How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
How fast the vehicle was traveling.
These data can help provide a better
u n

derstanding of the circumstances in which
crashes and injuries occur.
NOTE:
EDR data are recorded by your vehicle only if a
n on
-trivial crash situation occurs; no data are
recorded by the EDR under normal driving condi -
tions and no personal data (e.g., name, gender,
a g

e, and crash location) are recorded. However,
other parties, such as law enforcement, could
WARNING!
Modifications to any part of the air bag system
could cause it to fail when you need it. You
could be injured if the air bag system is not
there to protect you. Do not modify the compo -
nents or wiring, including adding any kind of
ba
dges or stickers to the steering wheel hub
trim cover or the upper passenger side of the
instrument panel. Do not modify the front
fascia/bumper, vehicle body structure, or add
aftermarket side steps or running boards.
It is dangerous to try to repair any part of the
air bag system yourself. Be sure to tell anyone
who works on your vehicle that it has an air
bag system.

Do not attempt to modify any part of your air
bag system. The air bag may inflate accidentally
or may not function properly if modifications are
made. Take your vehicle to an authorized dealer
for any air bag system service. If your seat,
including your trim cover and cushion, needs to
be serviced in any way (including removal or
loosening/tightening of seat attachment bolts),
take the vehicle to an authorized dealer. Only
manufacturer approved seat accessories may
be used. If it is necessary to modify the air bag
system for persons with disabilities, contact an
authorized dealer.

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259
Keyless Enter 'n Go™................................20, 81Enter The Trunk...........................................13Passive Entry...............................................20Passive Entry Programming.........................20Keys.................................................................12Replacement...............................................14
L
Lane Change And Turn Signals........................43Lane Change Assist.........................................43LaneSense....................................................108Lap/Shoulder Belts.......................................153Latches..........................................................178Hood...........................................................59Lead Free Gasoline........................................246Leaks, Fluid...................................................178Life Of Tires...................................................234Light Bulbs...........................................178, 221Lights.............................................................178Air Bag.......................................72, 158, 176Automatic Headlights..................................41Brake Assist Warning................................140Brake Warning...................................72, 245Bulb Replacement.....................................221Cruise...................................................77, 78Daytime Running.........................................41Dimmer Switch, Headlight....................40, 41Engine Temperature Warning......................73Exterior......................................................178
Fog..............................................................42Hazard Warning Flasher...........................179Headlight Switch..........................................40Headlights...................................40, 42, 222Headlights On With Wipers..........................42High Beam...................................................41High Beam/Low Beam Select......................41Instrument Cluster.......................................40Intensity Control..........................................44Interior.........................................................43License.....................................................224Lights On Reminder.....................................42Malfunction Indicator (Check Engine)..........75Map.............................................................43Park......................................................41, 78Passing........................................................41Reading.......................................................43Seat Belt Reminder.....................................73Security Alarm.............................................74Service.....................................................221Traction Control........................................140Turn Signals.........................40, 43, 78, 178Vanity Mirror................................................34Warning Instrument Cluster
Descriptions.....................................73, 78Load Leveling System......................................63Load Shed Battery Saver On............................70Load Shed Electrical Load Reduction..............70
Load Shed Intelligent Battery Sensor...............70Loading Vehicle.............................................113Capacities.................................................113Tires..........................................................229Locks Auto Unlock.................................................22Automatic Door............................................22Child Protection...........................................23Power Door..................................................20Low Tire Pressure System.............................148Lubrication, Body..........................................206Lug Nuts........................................................245
M
Maintenance Free Battery............................201Maintenance Schedule........................195, 196Malfunction Indicator Light (Check Engine).....75ManualPark Release............................................190Service......................................................253Media Hub.......................................................53Memory Feature (Memory Seats).....................27Memory Seat....................................................27Memory Seats And Radio.................................27Methanol.......................................................247Mirrors.............................................................34Electric Powered..........................................35Electric Remote...........................................35Heated.........................................................36
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