2021 RAM PROMASTER ECU

2
INTRODUCTION
Symbols Key ............................................................ 7
WARNINGS AND CAUTIONS ................................. 7
VAN CONVERSIONS/CAMPERS ........................... 7
VEHICLE MODIFICATIONS/ALTERATIONS ........... 7
Symbol Glossary ..................................................... 8
GETTING TO KNOW YOUR VEHICLE
KEYS ......................................................................10
Key Fob......................................................... 10
SENTRY KEY ..........................................................12
IGNITION SWITCH .................................................12
VEHICLE SECURITY SYSTEM —
IF EQUIPPED .........................................................13
To Arm The System ...................................... 13
To Disarm The System................................. 13
Rearming Of The System............................. 13
Security System Manual Override .............. 13
DOORS ..................................................................14
Power Door Locks ....................................... 14
Auto Unlock Doors ....................................... 15
Automatic Door Locks ................................. 15
STEERING WHEEL.................................................15
Telescoping Steering Column ..................... 15 SEATS .................................................................... 15
Manual Adjustments ................................... 16
Heated Seats — If Equipped ....................... 19
Fold Down Tray — If Equipped..................... 20
Adjustable Armrests — If Equipped ............ 20
Head Restraints .......................................... 20
UCONNECT VOICE RECOGNITION ....................... 22
Introducing Voice Recognition .................... 22
Basic Voice Commands............................... 22
Get Started ................................................... 22
Additional Information ................................. 22
MIRRORS ............................................................. 23
Inside Rearview Mirror ................................ 23
Outside Mirrors ........................................... 24
Power Mirrors — If Equipped ....................... 24
Power Folding Outside Mirrors —
If Equipped ................................................... 25 Heated Mirrors — If Equipped ..................... 25
EXTERIOR LIGHTS ................................................ 26
Multifunction Lever ..................................... 26
Headlights ................................................... 26
Daytime Running Lights (DRLs) —
If Equipped .................................................. 26 High/Low Beam Switch .............................. 26
Flash-To-Pass .............................................. 26
Parking Lights ............................................. 26
Follow Me Home/Headlight Delay .............. 27
Fog Lights — If Equipped ............................ 27 Turn Signals ................................................. 27
Lane Change Assist ..................................... 27
Battery Saver ............................................... 27
INTERIOR LIGHTS ................................................28
Courtesy Lights ............................................ 28
Illuminated Entry ......................................... 30
WIPERS AND WASHERS .....................................30
Windshield Wiper Operation ...................... 30
CLIMATE CONTROLS ...........................................31
Manual Climate Control Descriptions
And Functions .............................................. 31 Additional Rear Climate Control —
If Equipped ................................................... 34 Operating Tips.............................................. 34
INTERIOR STORAGE AND EQUIPMENT ..............36
Storage ......................................................... 36
USB/AUX Control — If Equipped ................ 37
Power Outlets............................................... 37
Auxiliary Switches — If Equipped ................ 38
WINDOWS ............................................................39
Power Windows .......................................... 39
Window Bar Grates — If Equipped .............. 39
Wind Buffeting ............................................ 40
HOOD......................................................................40
Opening ........................................................ 40
Closing.......................................................... 41
CARGO AREA FEATURES .....................................41

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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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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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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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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 VEHICLE13
NOTE:
Opening the driver's door when the key is in the
ignition and the ignition switch position is STOP
(OFF/LOCK) sounds a signal to remove the key.
VEHICLE SECURITY SYSTEM — IF EQUIPPED
The Vehicle Security system monitors the
vehicle doors and ignition for unauthorized
operation. When the Vehicle Security system is
activated, interior switches for door locks are
disabled. The system provides both audible and
visible signals. For the first three minutes, the
horn will sound, and the turn signal lights will
flash. For an additional 15 minutes, only the
turn signal lights will flash.
TO ARM THE SYSTEM
To arm the system, the Vehicle Security system
will set when you use the key fob to lock the
doors. If a door or the hood is not properly shut,
the system will not be armed.
TO DISARM THE SYSTEM
Use the key fob to unlock the door and disarm
the system.
The Vehicle Security system will also disarm if a
programmed Sentry Key is inserted into the
ignition switch. To exit the alarming mode,
push the key fob unlock button, or insert a
programmed Sentry Key into the ignition switch. The Vehicle Security system is designed to
protect your vehicle. However, you can create
conditions where the system will give you a false
alarm. If one of the previously described arming
sequences has occurred, the Vehicle Security
system will arm regardless of whether you are in
the vehicle or not. If you remain in the vehicle
and open a door, the alarm will sound. If this
occurs, disarm the Vehicle Security system.
REARMING OF THE SYSTEM
If the system has not been disabled, the Vehicle
Security system will rearm itself after the 15
additional minutes of turn lamps flashing. If the
condition which initiated the alarm is still
present, the system will ignore that condition
and monitor the remaining doors and ignition.
SECURITY SYSTEM MANUAL OVERRIDE
The Vehicle Security system will not arm/disarm
if you lock/unlock the doors using the manual
door lock.
Allowing children to be in a vehicle unat
-
tended is dangerous for a number of
reasons. A child or others could be seriously
or fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
Do not leave the key fob in or near the
vehicle, or in a location accessible to chil-
dren. A child could operate power windows,
other controls, or move the vehicle.
Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury or
death.
CAUTION!

An unlocked vehicle is an invitation. Always
remove the key from the ignition and lock all
the doors when leaving the vehicle unattended.

WARNING! (Continued)
2

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14GETTING TO KNOW YOUR VEHICLE
(Continued)
DOORS
POWER DOOR LOCKS
The central lock/unlock button has an LED that
indicates whether the doors are locked or
unlocked.
LED ON: Doors locked. Push the right side of
the central lock/unlock button once again to
centrally unlock all doors. The LED will switch
off.
LED OFF: Doors unlocked. Push the left side
of the central lock/unlock button again to
centrally lock all doors. The doors will be
locked only if all the doors are properly
closed.
Once the doors have been locked with the key
fob, it will no longer be possible to unlock them
by pushing the central lock/unlock button.
To unlock the front doors, pull the inside door
handle to the detent.
The load compartment power door lock switch
is located on the driver door trim panel. Use this
switch to lock or unlock the load compartment
doors.
Load Compartment Power Door Lock Switch
WARNING!
Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury or
death.
For personal security and safety in the
event of a collision, lock the vehicle doors
as you drive as well as when you park and
leave the vehicle.
Before exiting a vehicle, always shift the
automatic transmission into PARK or the
manual transmission into FIRST gear or
REVERSE, apply the parking brake, turn the
vehicle OFF, remove the key fobs from
vehicle, and lock all doors. and lock your
vehicle.
Never leave children alone in a vehicle, or
with access to an unlocked vehicle.
Allowing children to be in a vehicle unat
-
tended is dangerous for a number of
reasons. A child or others could be seriously
or fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
Do not leave the key fob in or near the
vehicle, or in a location accessible to chil -
dren. A child could operate power windows,
other controls, or move the vehicle.
CAUTION!
An unlocked vehicle is an invitation. Always
remove the key from the ignition and lock all
of the doors when leaving the vehicle
unattended.
WARNING! (Continued)

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GETTING TO KNOW YOUR VEHICLE21
Front Head Restraint Adjustment
To raise the head restraint, pull upward on the
head restraint. To lower the head restraint,
push the adjustment button located on the
base of the head restraint and push downward
on the head restraint.

Adjustment Buttons
NOTE:

Do not reposition the head restraint 180 degrees
to the incorrect position in an attempt to gain
additional clearance to the back of the head.

Front Head Restraint Removal
To remove the head restraint, raise it up as far
as it can go. Then, push the adjustment button
and the release button at the base of each post
while pulling the head restraint up. To reinstall
the head restraint, put the head restraint posts
into the holes. Then, adjust it to the appropriate
height.
NOTE:

Do not reposition the head restraint 180 degrees
to the incorrect position in an attempt to gain addi
-
tional clearance to the back of the head.

Head restraints should never be adjusted
while the vehicle is in motion. Driving a
vehicle with the head restraints improperly
adjusted or removed could cause serious
injury or death in the event of a collision.
1 — Release Button
2 — Adjustment Button
WARNING! (Continued)WARNING!
A loose head restraint thrown forward in a
collision or hard stop could cause serious
injury or death to occupants of the vehicle.
Always securely stow removed head
restraints in a location outside the occu -
pant compartment.
ALL the head restraints MUST be rein -
stalled in the vehicle to properly protect the
occupants. Follow the re-installation
instructions above prior to operating the
vehicle or occupying a seat.
2

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