2021 RAM CHASSIS CAB ESP

424SERVICING AND MAINTENANCE
(Continued)
TIRE ROTATION RECOMMENDATIONS
Tires on the front and rear axles of vehicles
operate at different loads and perform different
steering, driving, and braking functions.
For these reasons, they wear at unequal rates.
These effects can be reduced by timely rotation
of tires. The benefits of rotation are especially
worthwhile with aggressive tread designs such
as those on On/Off Road type tires. Rotation will
increase tread life, help to maintain mud, snow,
and wet traction levels, and contribute to a
smooth, quiet ride.
For the proper maintenance intervals

Ú
page 354.
More frequent rotation is permissible if desired.
The reasons for any rapid or unusual wear should be
corrected prior to rotation being performed.

Tire Rotation (Rearward Cross)

NOTE:
On Canadian vehicles only, if your vehicle is
equipped with All-Season type tires on the front
and On/Off Road type tires mounted on the
rear, do not use a front to back rotation pattern.
Instead, rotate your tires side to side at the
recommended intervals.
CAUTION!
To avoid damage to your vehicle or tires,
observe the following precautions:
Because of restricted traction device clear -
ance between tires and other suspension
components, it is important that only trac-
tion devices in good condition are used.
Broken devices can cause serious damage.
Stop the vehicle immediately if noise
occurs that could indicate device breakage.
Remove the damaged parts of the device
before further use.
Install device as tightly as possible and
then retighten after driving about 0.5 mile
(0.8 km). Autosock devices do not require
retightening.
Do not exceed 30 mph (48 km/h).
Drive cautiously and avoid severe turns and
large bumps, especially with a loaded
vehicle.
Do not drive for a prolonged period on dry
pavement.
Observe the traction device manufacturer’s
instructions on the method of installation,
operating speed, and conditions for use.
Always use the suggested operating speed
of the device manufacturer’s if it is less
than 30 mph (48 km/h).
Do not use traction devices on a compact
spare tire.
CAUTION! (Continued)

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426SERVICING AND MAINTENANCE
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
the 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,
under-inflation, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.

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428SERVICING AND MAINTENANCE
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 precautions to not scratch the paint.
Avoid using abrasive compounds and power
buffing that may diminish the gloss or thin
out the paint finish.
Special Care
If you drive on salted or dusty roads or if you
drive near the ocean, hose off the undercar -
riage at least once a month.
It is important that the drain holes in the
lower edges of the doors, rocker panels, and
trunk be kept clear and open.
If you detect any stone chips or scratches in
the paint, touch them up immediately.
If your vehicle is damaged due to a collision
or similar cause that destroys the paint and
protective coating, have your vehicle repaired
as soon as possible.
If you carry special cargo such as chemicals,
fertilizers, de-icer salt, etc., be sure that such
materials are well packaged and sealed.
If a lot of driving is done on gravel roads,
consider mud or stone shields behind each
wheel.
Use Mopar Touch Up Paint on scratches as
soon as possible. An authorized dealer has
touch up paint to match the color of your
vehicle.
INTERIORS
SEATS AND FABRIC PARTS
Use Mopar Total Clean to clean fabric
upholstery and carpeting.
CAUTION!
Do not use abrasive or strong cleaning
materials such as steel wool or scouring
powder that 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.
WARNING!
Do not use volatile solvents for cleaning
purposes. Many are potentially flammable,
and if used in closed areas they may cause
respiratory harm.

21_DPF_OM_EN_USC_t.book Page 428

TECHNICAL SPECIFICATIONS433

8/10 Lug Nuts/Bolts Torque Patterns

It is recommended that wheel stud nuts be kept
torqued to specifications at all times. Torque
wheel stud nuts to specifications at each
lubrication interval.

All wheel nuts should be tightened occasionally
to eliminate the possibility of wheel studs being
sheared or the bolt holes in the wheels becoming
elongated. This is especially important during the
first few hundred miles/kilometers of operation
to allow the wheel nuts to become properly set.
All wheel nuts should first be firmly seated
against the wheel. The wheel nuts should then be
tightened to recommended torque. Tighten the wheel nuts to final torque in increments.
Progress around the bolt circle, tightening the
wheel nut opposite to the wheel nut just
previously tightened until final torque is
achieved.

FUEL REQUIREMENTS — GASOLINE ENGINE
While operating on gasoline with the required
octane number, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a heavy
knocking sound, see a dealer immediately. Use
of gasoline with a lower than recommended
octane number can cause engine failure and
may void or not be covered by the New Vehicle
Limited Warranty.

Poor quality gasoline can cause problems such as
hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand of
gasoline before considering service for the vehicle.

6.4L ENGINE
Do not use E-85 flex fuel or ethanol blends
greater than 15% in this engine.

This engine is designed to meet all
emissions regulations and provide
satisfactory fuel economy and
performance when using high quality
unleaded gasoline having a posted octane number
of 87 as specified by the (R+M)/2 method.

REFORMULATED GASOLINE
Many areas of the country require the use of
cleaner burning gasoline referred to as
“reformulated gasoline”. Reformulated
gasoline contains oxygenates and are
specifically blended to reduce vehicle
emissions and improve air quality.
The use of reformulated gasoline is
recommended. Properly blended reformulated
gasoline will provide improved performance
and durability of engine and fuel system
components.
1 — 10 Bolt Pattern
2 — 8 Bolt Pattern
WARNING!

To avoid the risk of forcing the vehicle off the
jack, do not tighten the lug nuts/bolts fully until
the vehicle has been lowered. Failure to follow
this warning may result in personal injury.

9

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434TECHNICAL SPECIFICATIONS
MATERIALS ADDED TO FUEL
Besides using unleaded gasoline with the
proper octane rating, gasolines that contain
detergents, corrosion and stability additives are
recommended. Using gasolines that have these
additives will help improve fuel economy,
reduce emissions, and maintain vehicle
performance.
Designated TOP TIER Detergent
Gasoline contains a higher level
of detergents to further aide in
minimizing engine and fuel system
deposits. When available, the usage of TOP
TIER Detergent Gasoline is recommended. Visit
www.toptiergas.com for a list of TOP TIER
Detergent Gasoline Retailers.
Indiscriminate use of fuel system cleaning
agents should be avoided. Many of these
materials intended for gum and varnish
removal may contain active solvents or similar
ingredients. These can harm fuel system gasket
and diaphragm materials.
GASOLINE/OXYGENATE BLENDS
Some fuel suppliers blend unleaded gasoline
with oxygenates such as ethanol.
Problems that result from using gasoline
containing more than 15% ethanol (E-15) or
gasoline containing methanol are not the
responsibility of the manufacturer and may void
or not be covered under New Vehicle Limited
Warranty.
DO NOT USE E-85 IN NON-FLEX FUEL
V
EHICLES
Non-Flex Fuel Vehicles (FFV) are compatible
with gasoline containing up to 15% ethanol
(E-15). Use of gasoline with higher ethanol
content may void the New Vehicle Limited
Warranty.
If a Non-FFV vehicle is inadvertently fueled with
E-85 fuel, the engine will have some or all of
these symptoms:
Operate in a lean mode.
OBD II Malfunction Indicator Light on.
Poor engine performance.
Poor cold start and cold drivability.
Increased risk for fuel system component
corrosion.
CAUTION!
DO NOT use E-85, gasoline containing
methanol, or gasoline containing more than
15% ethanol (E-15). Use of these blends may
result in starting and drivability problems,
damage critical fuel system components,
cause emissions to exceed the applicable
standard, and/or cause the Malfunction
Indicator Light to illuminate. Please observe
pump labels as they should clearly
communicate if a fuel contains greater than
15% ethanol (E-15).

21_DPF_OM_EN_USC_t.book Page 434

TECHNICAL SPECIFICATIONS435
(Continued)
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS

Modifications that allow the engine to run on
Compressed Natural Gas (CNG) or Liquid
Propane (LP) may result in damage to the engine,
emissions, and fuel system components.
Problems that result from running CNG or LP are
not the responsibility of the manufacturer and
may void or not be covered under the New
Vehicle Limited Warranty.

METHYLCYCLOPENTADIENYL
M
ANGANESE TRICARBONYL (MMT) IN
G
ASOLINE

MMT is a manganese-containing metallic
additive that is blended into some gasoline to
increase octane. Gasoline blended with MMT
provides no performance advantage beyond
gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces
spark plug life and reduces emissions system
performance in some vehicles. The manufacturer
recommends that gasoline without MMT be used in your vehicle. The MMT content of gasoline may
not be indicated on the gasoline pump; therefore,
you should ask your gasoline retailer whether the
gasoline contains MMT. MMT is prohibited in
Federal and California reformulated gasoline.

FUEL SYSTEM CAUTIONS
NOTE:
Intentional tampering with the emissions
control system can result in civil penalties being
assessed against you.
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can
impair engine performance and damage
the emissions control system.
An out-of-tune engine or certain fuel or igni
-
tion malfunctions can cause the catalytic
converter to overheat. If you notice a
pungent burning odor or some light smoke,
your engine may be out of tune or malfunc -
tioning and may require immediate service.
Contact an authorized dealer for service
assistance.
The use of fuel additives, which are now
being sold as octane enhancers, is not
recommended. Most of these products
contain high concentrations of methanol.
Fuel system damage or vehicle perfor -
mance problems resulting from the use of
such fuels or additives is not the responsi -
bility of the manufacturer and may void or
not be covered under the New Vehicle
Limited Warranty.
CAUTION! (Continued)
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446CUSTOMER ASSISTANCE
FCA US LLC CUSTOMER CENTER
P.O. Box 21–8004
Auburn Hills, MI 48321–8004
Phone: (866) 726-4636
FCA CANADA INC. CUSTOMER CENTER
P.O. Box 1621
Windsor, Ontario N9A 4H6
Phone: (800) 465-2001 English /
(800) 387-9983 French
MEXICO
Av. Prolongacion Paseo de la Reforma, 1240
Sante Fe C.P. 05109
Mexico, D. F.
In Mexico City: 800-505-1300
Outside Mexico City: +(52)55 50817568
PUERTO RICO AND US VIRGIN ISLANDS
FCA Caribbean LLC
P.O. Box 191857
San Juan 00919-1857
Phone: (866) 726-4636
Fax: (787) 782-3345
CUSTOMER ASSISTANCE FOR THE
H
EARING OR SPEECH IMPAIRED
(TDD/TTY)
To assist customers who have hearing
difficulties, FCA US LLC has installed special
TDD (Telecommunication Devices for the Deaf)
equipment at its customer center. Any hearing
or speech impaired customer, who has access
to a TDD or a conventional teletypewriter (TTY)
in the United States, can communicate with the
FCA US LLC by dialing 1-800-380-2479.
Canadian residents with hearing difficulties that
require assistance can use the special needs
relay service offered by Bell Canada. For TTY
teletypewriter users, dial 711 and for Voice
callers, dial 1-800-855-0511 to connect with a
Bell Relay Service operator.
SERVICE CONTRACT
You may have purchased a service contract for
a vehicle to help protect you from the high cost
of unexpected repairs after FCA US LLC's New
Vehicle Limited Warranty expires. The Mopar
Vehicle Protection plans are the ONLY vehicle
extended protection plans authorized,
endorsed and backed by FCA US LLC to provide
additional protection beyond your vehicle’s
warranty. If you purchased a Mopar Vehicle
Protection Plan, you will receive Plan Provisions
and an Owner Identification Card in the mail
within three weeks of the vehicle delivery date.
If you have any questions about the service
contract, call the FCA US LLC’s Service Contract
National Customer Hotline at 1-800-521-9922
(Canadian residents, call (800) 465-2001
English / (800) 387-9983 French).
FCA US LLC is not responsible for any service
contract you may have purchased from another
manufacturer. If you require service after the
FCA US LLC New Vehicle Limited Warranty
expires, please refer to the contract documents,
and contact the person listed in those
documents.

21_DPF_OM_EN_USC_t.book Page 446

CUSTOMER ASSISTANCE449
GENERAL INFORMATION
The following regulatory statement applies to all
Radio Frequency (RF) devices equipped in this
vehicle:
This device complies with Part 15 of the FCC
Rules and with Innovation, Science and
Economic Development Canada license-exempt
RSS standard(s). Operation is subject to the
following two conditions:

1. This device may not cause harmful
interference, and

2. This device must accept any interference received, including interference that may
cause undesired operation. Le présent appareil est conforme aux CNR
d`Innovation, Science and Economic
Development applicables aux appareils radio
exempts de licence. L'exploitation est autorisée
aux deux conditions suivantes:

1. l'appareil ne doit pas produire de
brouillage, et

2. l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compro -
mettre le fonctionnement. La operación de este equipo está sujeta a las
siguientes dos condiciones:

1. es posible que este equipo o dispositivo no
cause interferencia perjudicial y

2. este equipo o dispositivo debe aceptar cualquier interferencia, incluyendo la que
pueda causar su operación no deseada.
NOTE:
Changes or modifications not expressly
approved by the party responsible for compli -
ance could void the user’s authority to operate
the equipment.
10

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