engine RAM PROMASTER 2021 Owners Manual

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway
motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide,
phthalates, and lead, which are known to the State of California to cause cancer and birth defects
or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the
engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash
your hands frequently when servicing your vehicle. For more information go to
www.P65Warnings.ca.gov/passenger-vehicle.
This Owner’s Manual illustrates and describes the operation of features and equipment that are either standard or optional on this vehicle. This manual may
also include a description of features and equipment that are no longer available or were not ordered on this vehicle. Please disregard any features and
equipment that are no longer available or were not ordered on this vehicle. FCA US LLC reserves the right to make changes in design and specifications, and/or
make additions to or improvements to its products without imposing any obligation upon itself to install them on products previously manufactured.
With respect to vehicles sold in Canada, the name FCA US LLC shall be deemed to be deleted and the name FCA Canada Inc. used in substitution therefore.
If you are the first registered retail owner of your vehicle, you may obtain a complimentary printed copy of the Warranty Booklet by calling
1-866-726-4636 (U.S.) or 1-800-387-1143 (Canada), or by contacting your dealer.
This Owner’s Manual is intended to familiarize you with the important features of your vehicle. Your most up-to-date Owner’s Manual, Navigation/Uconnect
manuals and Warranty Booklet can be found by visiting the website on the back cover. U.S. residents can purchase replacement kits by visiting
www.techauthority.com and Canadian residents can purchase replacement kits by calling 1-800-387-1143.
The driver’s primary responsibility is the safe operation of the vehicle. Driving while distracted can result in loss of vehicle control, resulting in an accident and
personal injury. FCA US LLC strongly recommends that the driver use extreme caution when using any device or feature that may take their attention off the
road. Use of any electrical devices, such as cellular telephones, computers, portable radios, vehicle navigation or other devices, by the driver while the vehicle
is moving is dangerous and could lead to a serious accident. Texting while driving is also dangerous and should never be done while the vehicle is moving. If you
find yourself unable to devote your full attention to vehicle operation, pull off the road to a safe location and stop your vehicle. Some states or provinces prohibit
the use of cellular telephones or texting while driving. It is always the driver’s responsibility to comply with all local laws.
This Owner’s Manual has been prepared to help you get acquainted with your new Ram brand vehicle and to provide a convenient reference for common
questions.
Not all features shown in this manual may apply to your vehicle. For additional information on accessories to help personalize your vehicle, visit
www.mopar.com/en-us/care/owners-manual.html (U.S.), www.owners.mopar.ca (Canada) or your local Ram brand dealer.
DRIVING AND ALCOHOL
Drunk driving is one of the most frequent causes of accidents. Your driving ability can be seriously
impaired with blood alcohol levels far below the legal minimum. If you are drinking, don’t drive. Ride with
a designated non-drinking driver, call a cab, a friend or use public transportation.
WARNING
Driving after drinking can lead to an accident. Your perceptions are less sharp, your reflexes are slower
and your judgment is impaired when you have been drinking. Never drink and then drive.

3
GETTING TO KNOW YOUR
INSTRUMENT PANEL
INSTRUMENT CLUSTER........................................42Instrument Cluster Descriptions ................. 43
INSTRUMENT CLUSTER DISPLAY .......................44
Location And Controls ................................. 44
Change Engine Oil — If Equipped................ 45
Display Setup Menu .................................... 46
Values Displayed ......................................... 46
Personal Settings
(Customer-Programmable Features) .......... 47
TRIP COMPUTER ...................................................47
Trip Button.................................................... 47
Trip Functions .............................................. 48
WARNING LIGHTS AND MESSAGES ..................48
Red Warning Lights...................................... 48
Yellow Warning Lights ................................. 50
Yellow Indicator Lights................................. 53
Green Indicator Lights ................................. 54
Blue Indicator Lights .................................... 54
ONBOARD DIAGNOSTIC SYSTEM — OBD II ......55
Onboard Diagnostic System (OBD II)
Cybersecurity................................................ 55
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS ...........................................................56
STARTING AND OPERATING
STARTING THE ENGINE ...................................... 57
Automatic Transmission.............................. 57
Normal Starting............................................ 57
Cold Weather Operation
(Below –22°F Or −30°C) ........................... 57 If Engine Fails To Start ................................ 57
After Starting ................................................ 58
ENGINE BLOCK HEATER — IF EQUIPPED ......... 58
ENGINE BREAK-IN RECOMMENDATIONS ........ 58
PARKING BRAKE ................................................. 59
AUTOMATIC TRANSMISSION ............................. 60 Key Ignition Park Interlock .......................... 60
Brake/Transmission Shift Interlock
System ......................................................... 60 Six-Speed Automatic Transmission ............ 61
POWER STEERING .............................................. 66
Power Steering Fluid Check ....................... 67
CRUISE CONTROL — IF EQUIPPED .................... 67
To Activate.................................................... 68
To Set A Desired Speed............................... 68
To Vary The Speed Setting .......................... 68
To Accelerate For Passing ........................... 69
To Resume Speed ....................................... 69
To Deactivate ............................................... 69
PARKSENSE REAR PARK ASSIST —
IF EQUIPPED ......................................................... 69
ParkSense Rear Park Assist Sensors ......... 70
ParkSense Rear Park Assist Alerts ............. 70 ParkSense Rear Park Assist Failure
Indications.................................................... 72 Cleaning The ParkSense System................ 72
ParkSense Rear Park Assist System
Usage Precautions ...................................... 72
PARKVIEW REAR BACK UP CAMERA ...............73
REFUELING THE VEHICLE ....................................75
Loose Fuel Filler Cap Message................... 76
VEHICLE LOADING ................................................76
Vehicle Certification Label .......................... 76
Gross Vehicle Weight Rating (GVWR) ......... 76
Gross Axle Weight Rating (GAWR) ............. 76
Tire Size ........................................................ 77
Rim Size ....................................................... 77
Inflation Pressure ........................................ 77
Curb Weight ................................................. 77
Overloading .................................................. 77
Loading ........................................................ 77
TRAILER TOWING .................................................78
Common Towing Definitions ....................... 78
Trailer Hitch Classification .......................... 80
Trailer Towing Weights
(Maximum Trailer Weight Ratings) ............ 81 Trailer And Tongue Weight ......................... 81
Towing Requirements ................................ 81
Towing Tips ................................................. 84
RECREATIONAL TOWING
(BEHIND MOTORHOME) ......................................85
Towing This Vehicle Behind Another
Vehicle .......................................................... 85 Recreational Towing .................................... 85

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4
DRIVING TIPS ........................................................86 Driving On Slippery Surfaces ...................... 86
Driving Through Water ................................ 86
MULTIMEDIA
UCONNECT SYSTEMS ..........................................88
CYBERSECURITY ..................................................88UCONNECT SETTINGS ..........................................89 Uconnect 3/3 NAV Settings ........................ 90
UCONNECT INTRODUCTION.................................98
Identifying Your Radio ................................. 98
Safety And General Information ...............100
UCONNECT MODES ........................................... 101
Radio Mode ................................................101
Media Mode ...............................................109Phone Mode ..............................................112
NAVIGATION MODE — IF EQUIPPED ................ 124
Operating Navigation Mode —
If Equipped .................................................124
STEERING WHEEL AUDIO CONTROLS ........... 146
Radio Operation .........................................146
Player Operation ........................................146
RAM TELEMATICS - IF EQUIPPED .................... 146
Ram Telematics General Information ......147
RADIO OPERATION AND MOBILE PHONES ... 148
Regulatory And Safety Information........... 148
SAFETY
SAFETY FEATURES .............................................149Anti-Lock Brake System (ABS) .................. 149Electronic Brake Control (EBC) System ... 150
AUXILIARY DRIVING SYSTEMS.........................155
Blind Spot Monitoring (BSM) —
If Equipped ................................................ 155 Forward Collision Warning (FCW) With
Mitigation — If Equipped............................ 159 Tire Pressure Monitoring
System (TPMS) ........................................... 161
OCCUPANT RESTRAINT SYSTEMS .................. 164
Occupant Restraint Systems Features .... 164
Important Safety Precautions ................... 164
Seat Belt Systems ..................................... 165
Supplemental Restraint
Systems (SRS)............................................ 172 Child Restraints ......................................... 181
SAFETY TIPS ...................................................... 186
Transporting Passengers .......................... 186Transporting Pets ..................................... 187
Safety Checks You Should Make Inside
The Vehicle ................................................ 187 Periodic Safety Checks You Should
Make Outside The Vehicle ........................ 188 Exhaust Gas ............................................... 189Carbon Monoxide Warnings ...................... 189
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS ....................... 190
JACKING AND TIRE CHANGING ....................... 190 Preparations For Jacking .......................... 191
Jack Location ............................................. 191
Spare Tire Removal ................................... 193
Jacking Instructions................................... 194
Wheel Covers ............................................. 197
TIRE SERVICE KIT — IF EQUIPPED ................... 197
Tire Service Kit Storage............................. 198
Tire Service Kit Components And
Operation ................................................... 198 Tire Service Kit Usage Precautions .......... 198Sealing A Tire With Tire Service Kit .......... 200
JUMP STARTING ................................................ 203
Preparations For Jump Start ..................... 203
Jump Starting Procedure .......................... 204
Battery Location ........................................ 206
IF YOUR ENGINE OVERHEATS ......................... 206
GEAR SELECTOR OVERRIDE ........................... 207
FREEING A STUCK VEHICLE ............................ 208
TOWING A DISABLED VEHICLE ........................ 209
Automatic Transmission............................ 210
ENHANCED ACCIDENT RESPONSE
SYSTEM (EARS).................................................. 210
EVENT DATA RECORDER (EDR) ....................... 210

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5
SERVICING AND MAINTENANCE
SCHEDULED SERVICING .................................. 211Maintenance Plan......................................212
ENGINE COMPARTMENT .................................. 215
3.6L Engine ...............................................215Checking Oil Level......................................216
Adding Washer Fluid..................................217Maintenance-Free Battery .......................217
Pressure Washing ......................................217
VEHICLE MAINTENANCE ................................... 218
Engine Oil ...................................................218
Engine Oil Filter ..........................................219Engine Air Cleaner Filter ...........................219
Air Conditioner Maintenance ...................219Body Lubrication ........................................221
Windshield Wiper Blades .........................221
Exhaust System ........................................221
Cooling System ..........................................223Brake System ............................................226
Automatic Transmission ............................226
FUSES .........................................................228
BULB REPLACEMENT ................................235
TIRES .................................................................. 240
Tire Safety Information .............................240Tires — General Information .....................248Tire Types ...................................................252
Spare Tires — If Equipped .........................253
Wheel And Wheel Trim Care ....................255
Snow Traction Devices .............................257Tire Rotation Recommendations ..............258 DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES .................. 259
Treadwear .................................................. 259
Traction Grades ......................................... 259
Temperature Grades ................................. 259
STORING THE VEHICLE .....................................260
BODYWORK ........................................................ 260
Protection From Atmospheric Agents....... 260
Body And Underbody Maintenance .......... 260Preserving The Bodywork .......................... 261
INTERIORS ......................................................... 261
Seats And Fabric Parts .............................. 261
Plastic And Coated Parts ........................... 262
Leather Surfaces ....................................... 263Glass Surfaces .......................................... 263Cleaning The Instrument Panel
Cupholders ................................................. 263
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER.................264
BRAKE SYSTEM .................................................. 264

WHEEL AND TIRE TORQUE SPECIFICATIONS .... 264

Torque Specifications ................................ 264
FUEL REQUIREMENTS .......................................265
3.6L Engine ................................................ 265
Reformulated Gasoline ............................ 266
Materials Added To Fuel ........................... 266
Gasoline/Oxygenate Blends ..................... 266Do Not Use E-85 In Non-Flex Fuel
Vehicles ...................................................... 266
CNG And LP Fuel System Modifications ..... 267

MMT In Gasoline........................................ 267
Fuel System Cautions................................ 267
FLUID CAPACITIES ............................................. 268
ENGINE FLUIDS AND LUBRICANTS ................. 268
CHASSIS FLUIDS AND LUBRICANTS ............... 270
CUSTOMER ASSISTANCE
SUGGESTIONS FOR OBTAINING SERVICE
FOR YOUR VEHICLE .......................................... 271 Prepare For The Appointment .................. 271Prepare A List............................................. 271
Be Reasonable With Requests ................. 271
IF YOU NEED ASSISTANCE .............................. 271
FCA US LLC Customer Center ................... 272
FCA Canada Inc. Customer Center ........... 272
Mexico ........................................................ 272
Puerto Rico And US Virgin Islands ............ 272
Customer Assistance For The Hearing Or
Speech Impaired (TDD/TTY) ..................... 272 Service Contract ....................................... 272
WARRANTY INFORMATION .............................. 273
MOPAR PARTS .................................................. 273
REPORTING SAFETY DEFECTS ........................ 273 In The 50 United States And
Washington, D.C. ....................................... 273 In Canada ................................................... 273
PUBLICATION ORDER FORMS ........................ 274
General Information.......................................... 274

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6
INTRODUCTION
Dear Customer,
Congratulations on the purchase of your new Ram. Be assured that it represents precision workmanship, distinctive styling, and high quality. This
Owner’s Manual has been prepared with the assistance of service and engineering specialists to acquaint you with the operation and maintenance of
your vehicle. It is supplemented by customer-oriented documents. Within this information, you will find a description of the services that FCA US LLC
offers to its customers as well as the details of the terms and conditions for maintaining its validity. Please take the time to read all of these publications
carefully before driving your vehicle for the first time. Following the instructions, recommendations, tips, and important warnings in this manual will help
ensure safe and enjoyable operation of your vehicle. Be sure you are familiar with all vehicle controls, particularly those used for braking, steering,
transmission, and transfer case shifting (if equipped). Learn how your vehicle handles on different road surfaces. Your driving skills will improve with
experience.
This Owner’s Manual describes all versions of this vehicle. Options and equipment dedicated to specific markets or versions are not expressly indicated
in the text. Therefore, you should only consider the information that is related to the trim level, engine, and version that you have purchased. Any content
introduced throughout the Owner’s Information, which may or may not be applicable to your vehicle, will be identified with the wording “If Equipped”.
All data contained in this publication are intended to help you use your vehicle in the best possible way. FCA US LLC aims at a constant improvement
of the vehicles produced. For this reason, it reserves the right to make changes to the model described for technical and/or commercial reasons. For
further information, contact an authorized dealer.
When it comes to service, remember that authorized dealers know your Ram best, have factory-trained technicians and genuine MOPAR® parts, and
care about your satisfaction.

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8
SYMBOL GLOSSARY
Some car components have colored labels with symbols indicating
precautions to be observed when using this component. It is important to
follow all warnings when operating your vehicle. See below for the
definition of each symbol Úpage 42.
Red Warning Lights
Seat Belt Reminder Warning Light
Úpage 48
Air Bag Warning Light Úpage 48
Battery Charge Warning Light Úpage 48
Door Open Warning Light Úpage 49
Electronic Throttle Control (ETC) Warning Light Úpage 49
Transmission Fault Warning Light Úpage 49
Engine Temperature Warning Light
Úpage 49
Brake Warning Light Úpage 49
Oil Pressure Warning Light Úpage 50
Vehicle Security Warning Light — If Equipped Úpage 50
Yellow Warning Lights
Immobilizer Fail / VPS Electrical Alarm
Indicator Light
Ú page 50
Tire Pressure Monitoring System (TPMS) Warning Light
Ú page 51
Electronic Stability Control (ESC) Warning Light Úpage 52
Red Warning Lights

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9
Electronic Stability Control (ESC) OFF Warning Light
Ú page 52
Engine Check/Malfunction Indicator Warning Light (MIL)
Úpage 52
Anti-Lock Brake System (ABS) Warning Light Úpage 53
Generic Warning Light Úpage 53
Yellow Indicator Lights
Forward Collision Warning (FCW) OFF Indicator
Light — If Equipped
Úpage 53
Service Forward Collision Warning (FCW) Light — If Equipped
Ú page 53

Yellow Warning Lights
TOW/HAUL Indicator Light Úpage 53
Green Indicator Lights
Turn Signal Indicator Lights
Úpage 54
Front Fog Indicator Light — If Equipped Úpage 54
Park/Headlight On Indicator Light Úpage 54
Cruise Control Indicator Light — If Equipped Úpage 54
Blue Indicator Lights
High Beam Indicator Light
Úpage 54
Yellow Indicator Lights
1

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12GETTING TO KNOW YOUR VEHICLE
(Continued)
SENTRY KEY
The Sentry Key Immobilizer System prevents
unauthorized vehicle operation by disabling the
engine. The system does not need to be armed
or activated. Operation is automatic, regardless
of whether the vehicle is locked or unlocked.
The system uses ignition keys which have an
embedded electronic chip (transponder) to
prevent unauthorized vehicle operation.
Therefore, only keys that are programmed to
the vehicle can be used to start and operate the
vehicle.
If the vehicle security light is on after the key is
turned to the MAR (ACC/ON/RUN) position, it
indicates that there is a problem with the
electronics.All of the keys provided with your new vehicle
have been programmed to the vehicle
electronics.
NOTE:
A key which has not been programmed is also
considered an invalid key, even if it is cut to fit
the ignition switch lock cylinder for that vehicle
Ú
page 274.
IGNITION SWITCH

1. Place the gear selector in PARK.

2. Rotate the key to the STOP (OFF/LOCK)
position.
3. Remove the key from the mechanical ignition switch.
Mechanical Ignition Switch Positions

CAUTION!
The Sentry Key Immobilizer system is not
compatible with some aftermarket remote
starting systems. Use of these systems may
result in vehicle starting problems and loss of
security protection.
1 — AVV (START)
2 — MAR (ACC/ON/RUN)
3 — STOP (OFF/LOCK)
WARNING!
Before exiting a vehicle, always shift the
automatic transmission into PARK, apply
the parking brake, turn the vehicle OFF,
remove the key fobs from vehicle, and lock
your vehicle.
Never leave children alone in a vehicle, or
with access to an unlocked vehicle.

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GETTING TO KNOW YOUR VEHICLE27
FOLLOW ME HOME/HEADLIGHT DELAY
When this feature is selected, the driver can
choose to have the headlights remain on for a
preset period of time after the engine is turned
off.
Activation
Remove the key or turn the ignition to the STOP
(OFF/LOCK) position, and pull the multifunction
lever toward the steering wheel within two
minutes. Each time the lever is pulled, the
activation of the lights will be extended by
30 seconds. The activation of the lights can be
extended to a maximum of 210 seconds.
The indicator light on the instrument panel will
light up and the corresponding message will
appear in the instrument cluster display for as
long as the function is activated. The indicator
light comes on when the lever is operated and
stays on until the function is automatically
deactivated. Each movement of the lever only
increases the amount of time the lights stay on.
Deactivation
Pull the multifunction lever toward the steering
wheel and hold it for more than two seconds.
FOG LIGHTS — IF EQUIPPED
The fog light switch is located on the center
stack of the instrument panel, just below the
climate controls.
Push the switch once to turn the fog
lights on. Push the switch a second
time to turn the fog lights off.
NOTE:
If the vehicle’s ignition is turned off, the fog
lights will also turn off.
TURN SIGNALS
Move the multifunction lever up or down and
the arrows on each side of the instrument
cluster will flash to show proper operation of the
turn signals.
NOTE:
If either light remains on and does not flash, or
there is a very fast flash rate, check for a defec -
tive outside light bulb.
LANE CHANGE ASSIST
Lightly push the multifunction lever up or down,
without moving beyond the detent, and the turn
signal will flash five times then automatically
turn off.
BATTERY SAVER
To protect the life of your vehicle’s battery,
when the ignition is OFF and any door is left ajar
for 15 minutes, the interior lights will
automatically turn off.
NOTE:
Battery saver mode is cancelled if the ignition is
placed in the MAR (ACC/ON/RUN) position.
2

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34GETTING TO KNOW YOUR VEHICLE
ADDITIONAL REAR CLIMATE CONTROL —
I
F EQUIPPED
These switches, mounted on the instrument
panel to the left of the steering column, activate
the additional rear heating/air conditioning
system.
NOTE:
These switches must be enabled for operation
by the Upfitter.

Additional Rear Climate Controls Switches

Rear Blower Control
Push this button to turn on the rear
climate controls. An indicator light will
turn on when the rear climate control
is on.
Rear Temperature Control
Rear Passenger Temperature Up
Button To change the temperature in
the rear of the vehicle, push
temperature control up button to
raise the temperature.
Rear Passenger Temperature Down
Button To change the temperature in
the rear of the vehicle, push
temperature control down button to
lower the temperature.
Rear MODE Button
Push this button to change the air
distribution mode for the rear
passengers.
OPERATING TIPS
NOTE:
Refer to the chart at the end of this section for
suggested control settings for various weather
conditions.
Summer Operation
The engine cooling system must be protected
with a high-quality antifreeze coolant to provide
proper corrosion protection and to protect
against engine overheating. A solution of 50%
OAT (Organic Additive Technology) coolant that
meets the requirements of FCA Material
Standard MS.90032 and 50% water is
recommended Ú page 268.
Winter Operation
To ensure the best possible heater and
defroster performance, make sure the engine
cooling system is functioning properly and the
proper amount, type, and concentration of
coolant is used. Use of the air Recirculation
mode during Winter months is not
recommended because it may cause
window fogging.

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