2021 CHRYSLER 300 air conditioning

GETTING TO KNOW YOUR INSTRUMENT PANEL 73
Seat Belt Reminder Warning Light
This warning light indicates when the
driver or passenger seat belt is
un
buckled. When the ignition is first
placed in the ON/RUN or ACC/ON/RUN
position and if the driver’s seat belt is unbuckled,
a chime will sound and the light will turn on. When
driving, if the driver or front passenger seat belt
remains unbuckled, the Seat Belt Reminder Light
will flash or remain on continuously and a chime
will sound
Ú page 151.
Battery Charge Warning Light
This warning light will illuminate when the
battery is not charging properly. If it stays
on

while the engine is running, there may
be a malfunction with the charging
system. Contact an authorized dealer as soon as
possible.
This indicates a possible problem with the
e l

ectrical system or a related component.
Door Open Warning Light
This indicator will illuminate when a door
is ajar/open and not fully closed.
NOTE:
If the vehicle is moving, there will also be a single
c h
ime.
Electric Power Steering Fault Warning
Light
This warning light will turn on when
there's a fault with the Electric Power
St
eering (EPS) system Ú page 92.
Electronic Throttle Control (ETC) Warning
Light
This warning light will illuminate to
indicate a problem with the ETC system.
I
f
a problem is detected while the vehicle
is running, the light will either stay on or
flash depending on the nature of the problem.
Cycle the ignition when the vehicle is safely and
completely stopped and the transmission is placed
in the PARK position. The light should turn off. If
the light remains on with the vehicle running, your
vehicle will usually be drivable; however, see an
authorized dealer for service as soon as possible.
NOTE:
This light may turn on if the accelerator and brake
p e
dals are pressed at the same time. If the light continues to flash when the vehicle is
r
u

nning, immediate service is required and you
may experience reduced performance, an
elevated/rough idle, or engine stall and your
vehicle may require towing. The light will come on
when the ignition is placed in the ON/RUN or ACC/
ON/RUN position and remain on briefly as a bulb
check. If the light does not come on during starting,
have the system checked by an authorized dealer.
Engine Coolant Temperature Warning
Light
This warning light warns of an
overheated engine condition. If the
e n
gine coolant temperature is too high,
this indicator will illuminate and a single
chime will sound. If the temperature reaches the
upper limit, a continuous chime will sound for four
minutes or until the engine is able to cool,
whichever comes first.
If the light turns on while driving, safely pull over
a n

d stop the vehicle. If the Air Conditioning (A/C)
system is on, turn it off. Also, shift the transmission
into NEUTRAL and idle the vehicle. If the
temperature reading does not return to normal,
turn the engine off immediately and call for service
Ú page 190.
WARNING!
Continued operation with reduced assist could
pose a safety risk to yourself and others. Service
should be obtained as soon as possible.3

204 SERVICING AND MAINTENANCE
AIR CONDITIONER MAINTENANCE
For best possible performance, your air conditioner
should be checked and serviced by an authorized
dealer at the start of each warm season. This
service should include cleaning of the condenser
fins and a performance test. Drive belt tension
should also be checked at this time.
Refrigerant Recovery And Recycling
R-134a — If Equipped
R-134a Air Conditioning Refrigerant is a hydrofluo -
rocarbon (HFC) that is an ozone-friendly
s u
bstance. The manufacturer recommends that
air conditioning service be performed by an
authorized dealer or other service facilities using
recovery and recycling equipment.
NOTE:
Use only manufacturer approved A/C system PAG
c om
pressor oil and refrigerants.
Refrigerant Recovery And Recycling
R-1234yf — If Equipped
R-1234yf Air Conditioning Refrigerant is a hydroflu -
oroolefin (HFO) that is endorsed by the
E n
vironmental Protection Agency and is an
ozone-friendly substance with a low global-
warming potential. The manufacturer recommends that air conditioning service be
performed by an authorized dealer using recovery
and recycling equipment.
NOTE:
Use only manufacturer approved A/C system PAG
c om
pressor oil, and refrigerants.
Cabin Air Filter
The cabin air filter is located in the fresh air inlet
under the hood, behind a removable panel in the
cowl on the passenger side of the vehicle, next to
the windshield wipers. When installing a new cabin
air filter, ensure its proper orientation.

1. R emove the access door in the cowl screen by
p
ressing the retaining clips.

Access Door

WARNING!
Use only refrigerants and compressor lubri -
cants approved by the manufacturer for your
a i
r conditioning system. Some unapproved
refrigerants are flammable and can explode,
injuring you. Other unapproved refrigerants or
lubricants can cause the system to fail,
requiring costly repairs. Refer to Warranty
Information Book, for further warranty infor -
mation.
The air conditioning system contains refrig -
erant under high pressure. To avoid risk of
p e
rsonal injury or damage to the system,
adding refrigerant or any repair requiring lines
to be disconnected should be done by an
experienced technician.
CAUTION!
Do not use chemical flushes in your air condi -
tioning system as the chemicals can damage
y ou
r air conditioning components. Such damage
is not covered by the New Vehicle Limited War -
ranty.

SERVICING AND MAINTENANCE 211
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is
a regulated substance requiring proper disposal.
Check with your local authorities to determine the
disposal rules for your community. To prevent
ingestion by animals or children, do not store
ethylene glycol-based coolant in open containers
or allow it to remain in puddles on the ground,
clean up any ground spills immediately. If ingested
by a child or pet, seek emergency assistance
immediately.
Coolant Level
The coolant bottle provides a quick visual method
for determining that the coolant level is adequate.
With the engine off and cold, the level of the engine coolant (antifreeze) in the bottle should be
between the ranges indicated on the bottle.
The radiator normally remains completely full, so
t
h

ere is no need to remove the radiator/coolant
pressure cap unless checking for engine coolant
freeze point or replacing coolant. Advise your
service attendant of this. As long as the engine
operating temperature is satisfactory, the coolant
bottle need only be checked once a month.
When additional engine coolant is needed to
m a

intain the proper level, only OAT coolant that
meets the requirements of FCA Material Standard
MS.90032 should be added to the coolant bottle.
Do not overfill.
Cooling System Notes
NOTE:
When the vehicle is stopped after a few miles/kilo -
meters of operation, you may observe vapor
c om

ing from the front of the engine compartment.
This is normally a result of moisture from rain,
snow, or high humidity accumulating on the
radiator and being vaporized when the thermostat
opens, allowing hot engine coolant (antifreeze) to
enter the radiator.
If an examination of your engine compartment
s h

ows no evidence of radiator or hose leaks, the
vehicle may be safely driven. The vapor will soon
dissipate.
Do not overfill the coolant expansion bottle.
Check the coolant freeze point in the radiator
and in the coolant expansion bottle. If engine
coolant needs to be added, the contents of the
coolant expansion bottle must also be protected
against freezing.
If frequent engine coolant additions are
required, the cooling system should be pressure
tested for leaks.
Maintain engine coolant concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corro -
sion protection of your engine which contains
a l

uminum components.
Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.
Keep the front of the radiator clean. If your
vehicle is equipped with air conditioning, keep
the front of the condenser clean.
Do not change the thermostat for Summer or
Winter operation. If replacement is ever neces -
sary, install ONLY the correct type thermostat.
O t

her designs may result in unsatisfactory
engine cooling performance, poor gas mileage,
and increased emissions.
WARNING!
Do not open hot engine cooling system. Never
add engine coolant (antifreeze) when the
engine is overheated. Do not loosen or
remove the cap to cool an overheated engine.
Heat causes pressure to build up in the
cooling system. To prevent scalding or injury,
do not remove the pressure cap while the
system is hot or under pressure.
Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or
engine damage may result.
8

SERVICING AND MAINTENANCE 215
CAUTION!
When installing the power distribution center cover, it is important to ensure the cover is properly positioned and fully latched. Failure to do so may allow
water to get into the power distribution center and possibly result in an electrical system failure.
When replacing a blown fuse, it is important to use only a fuse having the correct amperage rating. The use of a fuse with a rating other than indicated may
result in a dangerous electrical system overload. If a properly rated fuse continues to blow, it indicates a problem in the circuit that must be corrected.
Cavity Cartridge Fuse Mini-Fuse Description
* If Equipped
F01 ––Spare
F02 40 Amp Green –Radiator Fan #1 – (Non 6.2L Supercharged)
F03 50 Amp Red –Electric Power Steering #1 *
F04 30 Amp Pink –Starter
F05 40 Amp Green –Anti Lock Brake
F06 30 Amp Pink –Anti Lock Brake
F07 20 Amp Blue –Police Ignition Run / ACC #1
F09 –20 Amp YellowAll-Wheel Drive Module *
F10 –10 Amp RedIntrusion MOD (300) * / Under Hood Lamp – Police
F11 –20 Amp YellowHorns
F12 –10 Amp RedAir Conditioning Clutch
F13 ––Spare
F14 ––Spare
F15 –20 Amp YellowLeft HID Headlamp *
8

242 SERVICING AND MAINTENANCE
VEHICLE STORAGE
If you are leaving your vehicle dormant for more
than 3 weeks, you may want to take these steps to
protect your battery.
Disconnect the negative cable from the battery.
Anytime you store your vehicle, or keep it out of
service (e.g., vacation) for two weeks or more,
run the air conditioning system at idle for about
five minutes in the fresh air and high blower
setting. This will ensure adequate system lubri
-
cation to minimize the possibility of compressor
d a

mage when the system is started again.
BODYWORK
PROTECTION FROM ATMOSPHERIC
A
GENTS
Vehicle body care requirements vary according to
geographic locations and usage. Chemicals that
make roads passable in snow and ice and those
that are sprayed on trees and road surfaces during
other seasons are highly corrosive to the metal in
your vehicle. Outside parking, which exposes your
vehicle to airborne contaminants, road surfaces on
which the vehicle is operated, extreme hot or cold
weather and other extreme conditions will have an
adverse effect on paint, metal trim, and underbody
protection. The following maintenance recommendations will
e
n

able you to obtain maximum benefit from the
corrosion resistance built into your vehicle.
What Causes Corrosion?
Corrosion is the result of deterioration or removal
of paint and protective coatings from your vehicle.
The most common causes are:
Road salt, dirt and moisture accumulation.
Stone and gravel impact.
Insects, tree sap and tar.
Salt in the air near seacoast localities.
Atmospheric fallout/industrial pollutants.
BODY AND UNDERBODY MAINTENANCE
Cleaning Headlights
Your vehicle is equipped with plastic headlights
and fog lights that are lighter and less susceptible
to stone breakage than glass headlights.
Plastic is not as scratch resistant as glass and
t h

erefore different lens cleaning procedures must
be followed.
To minimize the possibility of scratching the lenses
a n

d reducing light output, avoid wiping with a dry
cloth. To remove road dirt, wash with a mild soap
solution followed by rinsing. Do not use abrasive cleaning components,
s
ol

vents, steel wool or other aggressive material to
clean the lenses.
PRESERVING THE BODYWORK
Washing
Wash your vehicle regularly. Always wash your
vehicle in the shade using Mopar® Car Wash, or
a mild car wash soap, and rinse the panels
completely with water.
If insects, tar, or other similar deposits have
accumulated on your vehicle, use Mopar®
Super Kleen Bug and Tar Remover to remove.
Use a high quality cleaner wax, such as Mopar®
Cleaner Wax to remove road film, stains and to
protect your paint finish. Use care to never the
scratch the paint.
Avoid using abrasive compounds and power
buffing that may diminish the gloss or thin out
the paint finish.
CAUTION!
Do not use abrasive or strong cleaning mate -
rials such as steel wool or scouring powder
t h
at will scratch metal and painted surfaces.
Use of power washers exceeding 1,200 psi
(8,274 kPa) can result in damage or removal
of
paint and decals.

255
INDEX
A
About Your Brakes.........................................245Adaptive Cruise Control (ACC)
(Cruise Control)................................................94Adding Engine Coolant (Antifreeze)...............210Adding Fuel....................................................111Adding Washing Fluid....................................201Additives, Fuel...............................................246Adjust Forward.......................................................29Rearward.....................................................29Air Bag...........................................................159Advance Front Air Bag...............................159Air Bag Operation......................................160Air Bag Warning Light................................158Driver Knee Air Bag...................................161Enhanced Accident Response.........164, 194Event Data Recorder (EDR).......................194Front Air Bag.............................................159If Deployment Occurs................................164Knee Impact Bolsters................................161Maintaining Your Air Bag System..............165Maintenance.............................................165Redundant Air Bag Warning Light.............159Side Air Bags.............................................161Transporting Pets......................................176
Air Bag Light..................................72, 158, 176
Air Cleaner, Engine (Engine Air Cleaner Filter)..203
Air Conditioner Maintenance........................204Air Conditioner Refrigerant...........................204Air Conditioner System...........................47, 204Air Conditioning Filter..............................50, 204Air Conditioning, Operating Tips.......................50Air Filter........................................................203Air PressureTires.........................................................232AlarmArm The System...................................18, 19Rearm The System......................................19Security Alarm......................................18, 74Alarm SystemSecurity Alarm.............................................18All Wheel DriveTowing......................................................194All Wheel Drive (AWD)...................................213Alterations/ModificationsVehicle...........................................................8Antifreeze (Engine Coolant).................210, 248Disposal...................................................211Anti-Lock Brake System (ABS)......................137Anti-Lock Warning Light...................................74
Arming SystemSecurity Alarm.............................................18Assist, Hill Start.............................................141Audio Systems (Radio)..................................121Auto Down Power Windows..............................56Automatic Door Locks......................................22Automatic Headlights.......................................41Automatic High Beams.....................................41Automatic Temperature Control (ATC)..............49Automatic Transmission...................................87Adding Fluid.....................................213, 250Fluid And Filter Change.............................213Fluid Change.............................................213Fluid Level Check.............................212, 213Fluid Type........................................213, 250Special Additives......................................212
Automatic Transmission Limp Home Mode..22, 90
AutoPark..........................................................82AutostickOperation.....................................................90AUX Cord..........................................................53Auxiliary Electrical Outlet (Power Outlet)..........54AWDTowing......................................................194Axle Fluid.......................................................250Axle Lubrication............................................250
11

257
D
Daytime Running Lights...................................41Dealer Service...............................................202Deck Lid
Power Release............................................60Defroster, Windshield....................................177Diagnostic System, Onboard...........................79Dimmer SwitchHeadlight.....................................................41DipsticksOil (Engine)................................................201Disable Vehicle Towing..................................193DisposalAntifreeze (Engine Coolant).......................211Door Ajar..........................................................73Door Ajar Light.................................................73Door LocksAutomatic....................................................22Child-Protection Door Lock — Rear Doors....23Doors...............................................................19Driver’s Seat Back Tilt.....................................27DrivingThrough Flowing, Rising, Or Shallow
Standing Water
.....................................120
E
Electric Brake Control System.......................138Anti-Lock Brake System.............................137Electronic Roll Mitigation.................138, 142
Electric Remote Mirrors...................................35

Electronic Power Distribution Center (Fuses)...214
Electronic Speed Control (Cruise Control)........93Electronic Stability Control (ESC)..................139Electronic Throttle Control Warning Light.........73Emergency Gas Can Refueling......................189Emergency, In Case Of Freeing Vehicle When Stuck.....................192Hazard Warning Flasher...........................179Jacking.....................................................182Jump Starting..................................186, 187Towing......................................................193Emission Control System Maintenance...........79Engine..................................................199, 200Air Cleaner................................................203Block Heater................................................84Break-In Recommendations........................84Checking Oil Level....................................201Compartment..................................199, 200Compartment Identification......................199Coolant (Antifreeze).........................209, 249Cooling.....................................................209Exhaust Gas Caution................................178Fails To Start...............................................83Flooded, Starting.........................................83Fuel Requirements...................................246Jump Starting..................................186, 187Oil...........................................202, 248, 249Oil Filler Cap.............................................199Oil Filter....................................................203
Oil Selection....................................202, 248
Oil Synthetic..............................................203Overheating..............................................190Starting........................................................81Enhanced Accident Response
Feature................................................164, 194Ethanol..........................................................247Exhaust Gas Cautions...................................178Exhaust System...................................178, 208Exterior Lighting...............................................40Exterior Lights........................................40, 178
F
Filters Air Cleaner
................................................203Air Conditioning.................................50, 204Engine Oil........................................203, 249Engine Oil Disposal...................................203Flashers........................................................179Hazard Warning........................................179Turn Signals................................43, 78, 178Flash-To-Pass...................................................41Flooded Engine Starting...................................83Floor Console...................................................52Fluid Capacities............................................248Fluid Leaks....................................................178Fluid Level ChecksBrake........................................................212Cooling System.........................................209Engine Oil.................................................201
Transfer Case...........................................213
11