service CHRYSLER 300 2021 Repair Manual

SERVICING AND MAINTENANCE 213
Fluid Level Check
The fluid level is preset at the factory and does not
require adjustment under normal operating
conditions. Routine fluid level checks are not
required; therefore the transmission has no
dipstick. An authorized dealer can check your
transmission fluid level using special service tools.
If you notice fluid leakage or transmission
malfunction, visit an authorized dealer
immediately to have the transmission fluid level
checked. Operating the vehicle with an improper
fluid level can cause severe transmission damage.
Fluid And Filter Changes
Under normal operating conditions, the fluid
installed at the factory will provide satisfactory
lubrication for the life of the vehicle.
Routine fluid and filter changes are not required.
How e

ver, change the fluid and filter if the fluid
becomes contaminated (with water, etc.), or if the
transmission is disassembled for any reason.
Selection Of Lubricant
It is important to use the proper transmission fluid
to ensure optimum transmission performance and
life. Use only the manufacturer's specified
transmission fluid
Ú page 250. It is important to
maintain the transmission fluid at the correct level
u s
ing the recommended fluid.
NOTE:
No chemical flushes should be used in any trans -
mission; only the approved lubricant should be
u s

ed.
ALL WHEEL DRIVE (AWD) —
I
F EQUIPPED
The All Wheel Drive system consists of a transfer
case and front differential. The exterior surface of
these components should be inspected for
evidence of fluid leaks. Confirmed leaks should be
repaired as soon as possible.
The transfer case fluid fill/inspection plug is
l oc

ated in the middle of the rear housing. To
inspect the transfer case fluid level, remove the
fill/inspection plug. The fluid level should be even
with the bottom of the hole. Use this plug to add
fluid as required.
The front differential fill plug is located on the outer
cov
er near the half shaft attachment. To inspect
the differential fluid level, remove the fill plug. The
fluid level should be even with or slightly below the
bottom of the hole.
Fluid Changes
For the proper maintenance intervals Ú page 195.
REAR AXLE
For normal service, periodic fluid level checks are
not required. When the vehicle is serviced for other
reasons the exterior surfaces of the axle assembly
should be inspected. If gear oil leakage is
suspected inspect the fluid level

Ú page 250.
CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage your
transmission components. Such damage is not
covered by the New Vehicle Limited Warranty.
CAUTION!
If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe
transmission damage may occur. An authorized
dealer has the proper tools to adjust the fluid
level accurately.CAUTION!
Using a transmission fluid other than the
manufacturer’s recommended fluid may cause
deterioration in transmission shift quality and/or
torque converter shudder

Ú page 250.
8

214 SERVICING AND MAINTENANCE
FUSES
General Information
The fuses protect electrical systems against
excessive current.
When a device does not work, you must check the
fu

se element inside the blade fuse for a break/
melt.
Also, please be aware that when using power
ou t

lets for extended periods of time with the
engine off may result in vehicle battery discharge.

Blade Fuses

Underhood Fuses
The Front Power Distribution Center is located in
the engine compartment. This module contains
fuses and relays. Fuse cavity location and
descriptions are printed on the inside of the power
distribution center cover.

Front Power Distribution Center
Front Power Distribution Center

WARNING!
When replacing a blown fuse, always use an
appropriate replacement fuse with the same
amp rating as the original fuse. Never replace
a fuse with another fuse of higher amp rating.
Never replace a blown fuse with metal wires or
any other material. Do not place a fuse inside
a circuit breaker cavity or vice versa. Failure to
use proper fuses may result in serious
personal injury, fire and/or property damage.
Before replacing a fuse, make sure that the
ignition is off and that all the other services
are switched off and/or disengaged.
If the replaced fuse blows again, contact an
authorized dealer.
If a general protection fuse for safety systems
(air bag system, braking system), power unit
systems (engine system, transmission
system) or steering system blows, contact an
authorized dealer.1 — Fuse Element
2 — Blade Fuse with a good/ functional fuse
element
3 — Blade fuse with a bad/ not functional fuse
el
ement (blown fuse)

SERVICING AND MAINTENANCE 221
BULB REPLACEMENT
Replacement Bulbs
All of the interior bulbs are glass wedge base or glass cartridge types. Aluminum base bulbs are not approved and should not be used for replacement. F68
–10 Amp RedRear USB Timer / Rear Sunshade *
F69 ––Spare
F70 ––Spare
Cavity Cartridge Fuse Mini-Fuse Description
* If Equipped
Interior Bulbs
Bulb Name Bulb Number
Rear Courtesy/Reading Lamps W5W
Rear Compartment (Trunk) Lamp 562
Overhead Console Reading Lamps 578
Visor Vanity Lamps A6220
Glove Compartment Lamp – If Equipped 194
Door Courtesy 562
Shift Indicator Lamp JKLE14140
Optional Door Map Pocket/Cupholder LED (Serviced at an authorized dealer)
For lighted switches, see an authorized dealer for replacement instructions.
8

222 SERVICING AND MAINTENANCE
Replacing Exterior Bulbs
HIGH INTENSITY DISCHARGE (HID) HEAD -
LAMPS — IF EQUIPPED
The headlamps are a type of high voltage
discharge tube. High voltage can remain in the
circuit even with the headlamp switch off and the
ignition turned to the OFF position. Because of this,
you should not attempt to service a headlamp bulb yourself. If a headlamp bulb fails, take your vehicle
to an authorized dealer for service.
NOTE:
On vehicles equipped with HID headlamps, when
t h
e headlamps are turned on, there is a blue hue
to the lights. This diminishes and becomes more
white after approximately 10 seconds, as the
system charges.
Exterior Bulbs
Bulb Name Bulb Number
Low Beam/High Beam (Bi-Halogen Headlamp) 9005HL+
Low Beam/High Beam (Bi-Xenon Headlamp) D3S (Serviced at an authorized dealer)
Front Turn Signal Lamp PSY24WSV
Front Park Lamp LED (Serviced at an authorized dealer)
Daytime Running Lamp LED (Serviced at an authorized dealer)
Front Fog Lamp – If Equipped LED (Serviced at an authorized dealer)
Front Side marker Lamp LED (Serviced at an authorized dealer)
Rear Tail/Stop/Turn Lamp LED (Serviced at an authorized dealer)
Rear Side marker Lamp LED (Serviced at an authorized dealer)
Backup Lamp LED (Serviced at an authorized dealer)
Center High Mounted Stop Lamp (CHMSL) LED (Serviced at an authorized dealer)
License LED (Serviced at an authorized dealer)
WARNING!
A transient high voltage occurs at the bulb
sockets of HID headlamps when the headlamp
switch is turned ON. It may cause serious
electrical shock or electrocution if not serviced
properly. See an authorized dealer for service.

224 SERVICING AND MAINTENANCE
2. Reach behind the headlamp housing to access
the turn signal (inboard) bulb cap.

Turn Signal Bulb Cap

3. F irmly grab the cap and rotate it counter -
c
lockwise to unlock it.

Turn Signal Bulb Location
4. S
queeze the two tabs on the side of the bulb
s
ocket and pull straight out from the lamp
assembly.
5. D isconnect the bulb from the wiring connector
a
nd install the replacement bulb.
6. Install the bulb and connector assembly s
traight into the lamp until it locks in place.
7. Install the turn signal bulb cap in the headlamp h
ousing and rotate clockwise to lock in place.
FRONT FOG LAMPS
The Front Fog Lamps use LED sources that are not
serviceable separately. The Front Fog Lamp must
be replaced as an assembly; see an authorized
dealer.
FRONT/REAR SIDE MARKER LAMPS
The Side Markers use LED lamps that are not
serviceable separately. The Side Markers must be
replaced as an assembly, see an authorized
dealer.
REAR BACKUP LAMP AND TURN SIGNAL
LAMPS
The Rear Backup and Turn Signal Lamp use LED
sources that are not serviceable separately. The
Rear Lamps must be replaced as an assembly, see
an authorized dealer for further information.
LICENSE LAMP
The License Lamp uses an LED source that is not
serviceable separately. The License Lamp must be
replaced as an assembly; see an authorized
dealer.
CENTER HIGH MOUNTED STOP LAMP (CHMSL)
The CHMSL Lamp uses LED sources that are not
serviceable separately. The CHMSL Lamp must be
replaced as an assembly; see an authorized
dealer.

SERVICING AND MAINTENANCE 225
TIRES
TIRE SAFETY INFORMATION
Tire safety information will cover aspects of the
following information: Tire Markings, Tire
Identification Numbers, Tire Terminology and
Definitions, Tire Pressures, and Tire Loading.
Tire Markings

Tire Markings

NOTE:
P (Passenger) — Metric tire sizing is based on US
design standards. P-Metric tires have the letter
“P” molded into the sidewall preceding the size
designation. Example: P215/65R15 95H.
European — Metric tire sizing is based on Euro -
pean design standards. Tires designed to this
s t
andard have the tire size molded into the side -
wall beginning with the section width. The letter
"P
" is absent from this tire size designation.
Example: 215/65R15 96H.
LT (Light Truck) — Metric tire sizing is based on
US design standards. The size designation for
LT-Metric tires is the same as for P-Metric tires
except for the letters “LT” that are molded into
the sidewall preceding the size designation.
Example: LT235/85R16.
Temporary spare tires are designed for tempo -
rary emergency use only. Temporary high pres -
sure compact spare tires have the letter “T” or
“ S

” molded into the sidewall preceding the size
designation. Example: T145/80D18 103M.
High flotation tire sizing is based on US design
standards and it begins with the tire diameter
molded into the sidewall. Example: 31x10.5
R15 LT.

1 — US DOT Safety Standards Code (TIN)

2 — Size Designation
3 — Service Description
4 — Maximum Load
5 — Maximum Pressure
6 — Treadwear, Traction and
Temperature Grades
8

SERVICING AND MAINTENANCE 233
sitting for a minimum of 3 hours. The cold tire
inflation pressure must not exceed the maximum
inflation pressure molded into the tire sidewall.
Check tire pressures more often if subject to a
wi

de range of outdoor temperatures, as tire
pressures vary with temperature changes.
Tire pressures change by approximately 1 psi
(7 kPa) per 12°F (7°C) of air temperature change.
K e

ep this in mind when checking tire pressure
inside a garage, especially in the Winter.
Example: If garage temperature = 68°F (20°C)
a n

d the outside temperature = 32°F (0°C) then
the cold tire inflation pressure should be increased
by 3 psi (21 kPa), which equals 1 psi (7 kPa) for
every 12°F (7°C) for this outside temperature
condition.
Tire pressure may increase from 2 to 6 psi
(13 to 40 kPa) during operation. DO NOT reduce
t h

is normal pressure build up or your tire pressure
will be too low.
Tire Pressures For High Speed Operation
The manufacturer advocates driving at safe
speeds and within posted speed limits. Where
speed limits or conditions are such that the vehicle
can be driven at high speeds, maintaining correct
tire inflation pressure is very important. Increased
tire pressure and reduced vehicle loading may be
required for high-speed vehicle operation. Refer to
an authorized tire dealer or original equipment vehicle dealer for recommended safe operating
speeds, loading and cold tire inflation pressures.
Radial Ply Tires
Tire Repair
If your tire becomes damaged, it may be repaired if
i
t

meets the following criteria:
The tire has not been driven on when flat.
The damage is only on the tread section of your
tire (sidewall damage is not repairable).
The puncture is no greater than a ¼ of an inch
(6 mm).
Consult an authorized tire dealer for tire repairs
a n

d additional information.
Damaged Run Flat tires, or Run Flat tires that have
ex
perienced a loss of pressure should be replaced
immediately with another Run Flat tire of identical
size and service description (Load Index and
Speed Symbol). Replace the tire pressure sensor
as well as it is not designed to be reused.
Run Flat Tires — If Equipped
Run Flat tires allow you the capability to drive
50 miles (80 km) at 50 mph (80 km/h) after a
r a
pid loss of inflation pressure. This rapid loss of
inflation is referred to as the Run Flat mode. A Run
Flat mode occurs when the tire inflation pressure is
of/or below 14 psi (96 kPa). Once a Run Flat tire
reaches the run flat mode it has limited driving
capabilities and needs to be replaced immediately.
A Run Flat tire is not repairable. When a run flat tire
is changed after driving with underinflated tire
condition, please replace the TPMS sensor as it is
not designed to be reused when driven under run
flat mode 14 psi (96 kPa) condition.
NOTE:
TPMS Sensor must be replaced after driving the
v e
hicle on a flat tire condition.
WARNING!
High speed driving with your vehicle under
maximum load is dangerous. The added strain
on your tires could cause them to fail. You could
have a serious collision. Do not drive a vehicle
loaded to the maximum capacity at continuous
speeds above 75 mph (120 km/h).
WARNING!
Combining radial ply tires with other types of
tires on your vehicle will cause your vehicle to
handle poorly. The instability could cause a
collision. Always use radial ply tires in sets of
four. Never combine them with other types of
tires.
8

234 SERVICING AND MAINTENANCE
It is not recommended driving a vehicle loaded at
full capacity or to tow a trailer while a tire is in the
run flat mode.
See the Tire Pressure Monitoring section for more
in

formation.
Tire Spinning
When stuck in mud, sand, snow, or ice conditions,
do not spin your vehicle's wheels above 30 mph
( 4
8 km/h) or for longer than 30 seconds
c on
tinuously without stopping.
For further information
Ú page 192.
Tread Wear Indicators
Tread wear indicators are in the original equipment
tires to help you in determining when your tires
should be replaced.

Tire Tread

These indicators are molded into the bottom of the
tr
ead grooves. They will appear as bands when the
tread depth becomes a 1/16 of an inch (1.6 mm).
Wh

en the tread is worn to the tread wear
indicators, the tire should be replaced.
Life Of Tire
The service life of a tire is dependent upon varying
factors including, but not limited to:
Driving style.
Tire pressure - Improper cold tire inflation pres -
sures can cause uneven wear patterns to
d e
velop across the tire tread. These abnormal
wear patterns will reduce tread life, resulting in
the need for earlier tire replacement.
Distance driven.
Performance tires, tires with a speed rating of V
or higher, and Summer tires typically have a
reduced tread life. Rotation of these tires per
the vehicle scheduled maintenance is highly
recommended.
WARNING!
Fast spinning tires can be dangerous. Forces
generated by excessive wheel speeds may
cause tire damage or failure. A tire could
explode and injure someone. Do not spin your
vehicle's wheels faster than 30 mph (48 km/h)
for

more than 30 seconds continuously when
you are stuck, and do not let anyone near a
spinning wheel, no matter what the speed.
1 — Worn Tire
2 — New TireWARNING!
Tires and the spare tire should be replaced after
six years, regardless of the remaining tread.
Failure to follow this warning can result in
sudden tire failure. You could lose control and
have a collision resulting in serious injury or
death.

SERVICING AND MAINTENANCE 241
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES
The following tire grading categories
were established by the National
Highway Traffic Safety Administration.
The specific grade rating assigned by the
tire's manufacturer in each category is
shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must conform
to

Federal safety requirements in
addition to these grades.
TREADWEAR
The Treadwear grade is a comparative
rating, based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course.
For example, a tire graded 150 would
wear one and one-half times as well on
the government course as a tire graded
100. The relative performance of tires
depends upon the actual conditions of
their use, however, and may depart
significantly from the norm due to variations in driving habits, service
practices, and differences in road
characteristics and climate.
TRACTION GRADES
The Traction grades, from highest to
lowest, are AA, A, B, and C. These grades
represent the tire's ability to stop on wet
pavement, as measured under
controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have poor
traction performance.
TEMPERATURE GRADES
The Temperature grades are A (the
highest), B, and C, representing the tire's
resistance to the generation of heat and
its ability to dissipate heat, when tested
under controlled conditions on a
specified indoor laboratory test wheel.Sustained high temperature can cause
t
h

e material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. The grade C corresponds to a
level of performance, which all
passenger vehicle tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel, than the
minimum required by law.
WARNING!
The traction grade assigned to this tire is based
on straight-ahead braking traction tests, and
does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
WARNING!
The temperature grade for this tire is
established for a tire that is properly inflated and
not overloaded. Excessive speed, underinflation,
or excessive loading, either separately or in
combination, can cause heat buildup and
possible tire failure.
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.