2021 RAM 1500 service

470TECHNICAL SPECIFICATIONS
(Continued)
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.
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 FCA and
may void 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. FCA
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 the 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 FCA and may void or not be covered
under the New Vehicle Limited Warranty.
CAUTION! (Continued)

21_DT_OM_EN_USC_t.book Page 470

TECHNICAL SPECIFICATIONS471
FUEL REQUIREMENTS – DIESEL ENGINE
Federal law requires that you must fuel this
vehicle with Ultra Low Sulfur Highway Diesel
fuel (15 ppm Sulfur maximum) and prohibits
the use of Low Sulfur Highway Diesel fuel
(500 ppm Sulfur maximum) to avoid damage to
the emissions control system.
Use good quality diesel fuel from a reputable
supplier in your vehicle. For most year-round
service, No. 2 diesel fuel meeting ASTM
(formerly known as the American Society for
Testing and Materials) specification D-975
Grade S15 will provide good performance. If the
vehicle is exposed to extreme cold (below 20°F
or -7°C), or is required to operate at
colder-than-normal conditions for prolonged
periods, use Climatized Number 2 diesel fuel or
dilute the Number 2 diesel fuel with 50%
Number 1 diesel fuel. This will provide better
protection from fuel gelling or wax-plugging of
the fuel filters. Diesel fuel is seldom completely free of water.
To prevent fuel system trouble, drain the
accumulated water from the fuel/water
separator filter using the fuel/water separator
drain provided on the fuel filter housing. If you
buy good quality fuel and follow the cold
weather advice above, fuel conditioners should
not be required in your vehicle. If available in
your area, a high cetane “premium” diesel fuel
may offer improved cold-starting and warm-up
performance.
DIESEL FUEL SPECIFICATIONS
This diesel engine has been developed to take
advantage of the high energy content and
generally lower cost Number 2 Ultra Low Sulfur
diesel fuel or Number 2 Ultra Low Sulfur
Climatized diesel fuels.
NOTE:
If you accidentally fill the fuel tank with gaso
-
line on your diesel vehicle, do not start the
engine. Damage to the engine and fuel
system could occur. Please call an autho -
rized dealer for service.
A maximum blend of 5% biodiesel meeting
ASTM specification D-975 may be used with
your diesel engine without any adjustments
to regular service schedules.
Commercially available fuel additives are not
necessary for the proper operation of your
diesel engine.
Number 1 Ultra Low Sulfur diesel fuel should
only be used where extended arctic condi -
tions (-10°F or -23°C) exist.
WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable under
certain conditions and hazardous or
explosive when mixed with diesel fuel.
CAUTION!
If the “Water in Fuel Indicator Light” remains
on, DO NOT START engine before you drain
the water from the fuel filter(s) to avoid
engine damage Ú page 412.9

21_DT_OM_EN_USC_t.book Page 471

476TECHNICAL SPECIFICATIONS
Fuel Filters — 3.0L Turbo Diesel Engine We recommend you use Mopar fuel filter. Must meet 3 micron rating. Using a fuel filter that
does not meet FCA’s filtration and water separating requirements can severely impact fuel
system life and reliability.
Under normal conditions the diesel fuel filter should be replaced
every 20,000 miles (32,000 km) (every other oil change). If the vehicle is being used in severe
operating conditions, or In certain geographical areas of the country (Pennsylvania, New York,
Ohio, Maryland, West Virginia, Arkansas, Oklahoma, Kansas, Iowa, Missouri and Nebraska)
due to fuel cleanliness issues, it’s recommended to replace the fuel filter every 10,000 miles
(16,000 km).
Fuel Selection — 3.0L Turbo Diesel Engine Use good quality diesel fuel from a reputable supplier in your vehicle. Federal law requires that
you must fuel this vehicle with Ultra Low Sulfur Highway Diesel fuel (15 ppm Sulfur maximum)
and prohibits the use of Low Sulfur Highway Diesel fuel (500 ppm Sulfur maximum) to avoid
damage to the emissions control system.
For most year-round service, Number 2 diesel fuel meeting ASTM specification D-975 Grade
S15 will provide good performance. We recommend you use a blend of up to 5% biodiesel,
meeting ASTM specification D-975 with your diesel engine.
This vehicle is compatible with biodiesel blends greater than 5% but no greater than 20%
biodiesel meeting ASTM specification D-7467 provided the shortened maintenance intervals
are followed as directed.
Diesel Exhaust Fluid Mopar Diesel Exhaust Fluid (API Certified) (DEF) or equivalent that has been API Certified to
the ISO 22241 standard. Use of fluids not API Certified to ISO 22241 may result in system
damage.
Component
Fluid, Lubricant, or Genuine Part

21_DT_OM_EN_USC_t.book Page 476

479
CUSTOMER ASSISTANCE
SUGGESTIONS FOR OBTAINING SERVICE
FOR YOUR VEHICLE
PREPARE FOR THE APPOINTMENT
All work to be performed may not be covered by
the warranty. Discuss additional charges with
the service manager. Keep a maintenance log
of your vehicle's service history. This can often
provide a clue to the current problem.
PREPARE A LIST
Make a written list of your vehicle's problems or
the specific work you want done. If you've had
an accident or work done that is not on your
maintenance log, let the service advisor know.
BE REASONABLE WITH REQUESTS
If you list a number of items and you must have
your vehicle by the end of the day, discuss the
situation with the service advisor and list the
items in order of priority. At many authorized
dealers, you may obtain a rental vehicle (additional charges may apply). If you need a
rental, it is advisable to make these
arrangements when you call for an
appointment.
IF YOU NEED ASSISTANCE
FCA US LLC and its authorized dealers are vitally
interested in your satisfaction. We want you to
be happy with our products and services.
Warranty service must be done by an
authorized dealer. We strongly recommend that
you take the vehicle to an authorized dealer.
They know your vehicle the best, and are most
concerned that you get prompt and high quality
service. FCA US LLC's authorized dealers have
the facilities, factory-trained technicians,
special tools, and the latest information to
ensure the vehicle is fixed correctly and in a
timely manner.
This is why you should always talk to an
authorized dealer’s service manager first. If for
some reason you are still not satisfied, talk to
the general manager or owner of the authorized
dealer. They want to know if you need
assistance. If an authorized dealer is unable to
resolve the concern, you may contact the FCA
US LLC's Customer Assistance center.
Any communication to FCA US LLC's customer
center should include the following information:
Owner's name and address
Owner's telephone number (home, mobile,
and office)
Authorized dealer name
Vehicle Identification Number (VIN)
Vehicle delivery date and mileage
FCA U S LLC CUSTOMER CENTER
P.O. Box 21–8004
Auburn Hills, MI 48321–8004
Phone: (866) 726-463610

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480CUSTOMER ASSISTANCE
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 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 the 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.

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CUSTOMER ASSISTANCE481
We appreciate that you have made a major
investment when you purchased the vehicle. An
authorized dealer has also made a major
investment in facilities, tools, and training to
ensure that you are absolutely delighted with
the ownership experience.
WARRANTY INFORMATION
See the Warranty Information for the terms and
provisions of FCA US LLC warranties applicable
to this vehicle and market. Refer to
www.mopar.com/om for further information.
MOPAR® PARTS
Mopar® original equipment parts &
accessories and factory filled fluids are
available from an authorized dealer. They are
recommended for your vehicle to keep it
operating at its best and maintain its original
condition.
REPORTING SAFETY DEFECTS
IN THE 50 UNITED STATES AND
W
ASHINGTON, D.C.
If you believe that your vehicle has a
defect that could cause a crash or cause
injury or death, you should immediately
inform the National Highway Traffic
Safety Administration (NHTSA) in
addition to notifying FCA US LLC.
If NHTSA receives similar complaints, it
may open an investigation, and if it finds
that a safety defect exists in a group of
vehicles, it may order a recall and
remedy campaign. However, NHTSA cannot become involved in individual
problems between you, an authorized
dealer or FCA US LLC.
To contact NHTSA, you may call the
Vehicle Safety Hotline toll free at
1-888-327-4236 (TTY:
1-800-424-9153); or go to
http://
www.safercar.gov
; or write to:
Administrator, NHTSA, 1200 New Jersey
Avenue, SE., West Building, Washington,
D.C. 20590. You can also obtain other
information about motor vehicle safety
from
http://www.safercar.gov.
IN CANADA
If you believe that your vehicle has a
safety defect, you should contact the
Customer Service Department
immediately. Canadian customers who
wish to report a safety defect to the
Canadian government should contact
Transport Canada, Motor Vehicle Defect
Investigations and Recalls at
1-800-333-0510 or go to
wwwapps.tc.gc.ca/Saf-Sec-Sur/7/PCDB-BDPP.
WARNING!
Engine exhaust (internal combustion engines
only), some of its constituents, and certain
vehicle components contain, or emit,
chemicals known to the State of California to
cause cancer and birth defects, or other
reproductive harm. In addition, certain fluids
contained in vehicles and certain products of
component wear contain, or emit, chemicals
known to the State of California to cause
cancer and birth defects, or other
reproductive harm.
10

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482CUSTOMER ASSISTANCE
PUBLICATION ORDER FORMS
To order the following manuals, you may use
either the website or the phone numbers listed
below.
Service Manuals
These comprehensive Service Manuals provide
a complete working knowledge of the vehicle,
system, and/or components and is written in
straightforward language with illustrations,
diagrams, and charts.
Diagnostic Procedure Manuals
Diagnostic Procedure Manuals are filled with
diagrams, charts and detailed illustrations.
These manuals make it easy to find and fix
problems on computer-controlled vehicle
systems and features. They show exactly how to
find and correct problems, using step-by-step
troubleshooting and drivability procedures,
proven diagnostic tests and a complete list of all
tools and equipment.
Owner's Manuals
These Owner's Manuals have been prepared
with the assistance of service and engineering
specialists to acquaint you with specific FCA US
LLC vehicles. To access your Owner's Information online, visit
www.mopar.com/om
To order a hard copy of your Owner’s
Information, visit:
www.techauthority.com (US)
Or
Call Tech Authority toll free at:
1-800-890-4038 (US)
1-800-387-1143 (Canada)
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.

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484
Blind Spot Monitoring
.................................... 318Bluetooth Connecting To A Particular Mobile PhoneOr Audio Device After Pairing
................275Body Builders Guide........................................ 11Body Mechanism Lubrication........................ 418B-Pillar Location............................................. 447Brake Assist System...................................... 311Brake Control System.................................... 311Brake Fluid.......................................... 425, 478Brake System...................................... 425, 467Fluid Check............................................... 425Master Cylinder......................................... 425Parking...................................................... 151Warning Light............................................ 126Brake/Transmission Interlock....................... 155Bulb Replacement......................................... 437Bulbs, Light.......................................... 371, 437
C
Camera.......................................................... 202Camera, AUX........................................ 204, 208Camera, Rear...................................... 202, 204Camper............................................................ 97Capacities, Fuel............................................. 474Caps, FillerOil (Engine)................................................ 404Radiator (Coolant Pressure)...................... 423Car Washes................................................... 462
Carbon Monoxide Warning................... 371, 372Cargo Light....................................................... 56CD................................................................. 268Cellular Phone.............................................. 309Center High Mounted Stop Light................... 442Center Seat Storage Compartment.................. 68Charge Air Cooler.......................................... 424Chart, Tire Sizing........................................... 444Check Engine Light (Malfunction Indicator
Light)............................................................. 138Checking Your Vehicle For Safety................. 369Checks, Safety.............................................. 369Child Restraint.............................................. 355Child RestraintsBooster Seats........................................... 358Child Seat Installation..................... 364, 365How To Stow An unused ALR Seat Belt.... 363Infant And Child Restraints....................... 357Locating The LATCH Anchorages.............. 362Lower Anchors And Tethers For Children.. 360Older Children And Child Restraints......... 357Seating Positions...................................... 359Clean Air Gasoline......................................... 469CleaningWheels..................................................... 456Climate Control................................................ 60Automatic.................................................... 60Manual........................................................ 63Cold Weather Operation............................... 146
Compact Spare Tire...................................... 455Connected Services...................................... 282Connected Services FAQ............................... 301Connected Services Features....................... 286Connected Services, Getting Started............ 284Connected Services, Introduction................. 282Contract, Service........................................... 480Controls........................................................ 259Cooling Pressure Cap (Radiator Cap)............ 423Cooling System............................................. 421Adding Coolant (Antifreeze)...................... 422Coolant Level................................... 421, 423Cooling Capacity....................................... 474Disposal Of Used Coolant......................... 423Drain, Flush, And Refill............................. 422Inspection................................................. 423Points To Remember................................ 424Pressure Cap............................................ 423Radiator Cap............................................. 423Selection Of Coolant (Antifreeze)......................... 422, 474, 475Corrosion Protection..................................... 461Cruise ControlAccel/Decel.............................................. 178Cancel....................................................... 179Resume.................................................... 179Cruise Control (Speed Control)............. 177, 179Cruise Light................................................... 136Customer Assistance.................................... 479Cybersecurity................................................ 236

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