light RAM 1500 2021 Owners Manual

3
UNIVERSAL GARAGE DOOR OPENER
(HOMELINK®) — IF EQUIPPED ...........................49 Before You Begin Programming
HomeLink® .................................................. 49 Erasing All The HomeLink® Channels........ 49
Identifying Whether You Have A Rolling
Code Or Non-Rolling Code Device .............. 49 Programming HomeLink® To A Garage
Door Opener ................................................. 50 Programming HomeLink® To A
Miscellaneous Device.................................. 51 Reprogramming A Single HomeLink®
Button ........................................................... 51 Canadian/Gate Operator Programming ..... 51
EXTERIOR LIGHTS.................................................52
Headlight Switch .......................................... 52
Multifunction Lever ..................................... 53
Daytime Running Lights (DRLs) ................. 53
High/Low Beam Switch ............................... 53
Automatic High Beam Headlamp
Control — If Equipped ................................. 53 Flash-To-Pass ............................................... 54
Automatic Headlights — If Equipped ......... 54
Parking Lights And Panel Lights ................. 54
Automatic Headlights With Wipers ............. 54
Headlight Delay ............................................ 55
Lights-On Reminder ..................................... 55
Fog Lights — If Equipped ............................ 55
Turn Signals ................................................ 55
Lane Change Assist — If Equipped ............. 55 Cargo Lights/Trailer Spotter Lights With
Bed Lights — If Equipped............................. 56 Battery Saver ............................................... 57
INTERIOR LIGHTS ................................................ 57
Courtesy Lights ............................................ 57
Illuminated Entry ......................................... 58
WINDSHIELD WIPERS AND WASHERS............. 58
Windshield Wiper Operation ...................... 58
Rain Sensing Wipers — If Equipped............ 59
CLIMATE CONTROLS ........................................... 60
Automatic Climate Control Descriptions
And Functions .............................................. 60 Manual Climate Control Descriptions And
Functions...................................................... 63 Automatic Temperature Control (ATC) —
If Equipped ................................................... 65 Climate Voice Recognition .......................... 66
Operating Tips ............................................. 66
INTERIOR STORAGE AND EQUIPMENT ............. 68
Storage ......................................................... 68
USB/AUX Control ......................................... 72
Electrical Power Outlets .............................. 74
Power Inverter — If Equipped ..................... 75
Wireless Charging Pad — If Equipped ........ 77
WINDOWS ............................................................ 77
Power Windows............................................ 77
Automatic Window Features ....................... 78
Reset Auto-Up ............................................. 78
Window Lockout Switch .............................. 79 Power Sliding Rear Window —
If Equipped .................................................. 79 Manual Sliding Rear Window —
If Equipped ................................................... 79 Wind Buffeting ............................................ 80
POWER SUNROOF — IF EQUIPPED ....................80
Single Pane Power Sunroof —
If Equipped ................................................... 80 Dual Pane Power Sunroof —
If Equipped ................................................... 82
HOOD .....................................................................84
To Open The Hood ....................................... 84
To Close The Hood....................................... 85
TAILGATE ...............................................................85
Opening ........................................................ 85
Closing.......................................................... 85
Locking Tailgate ........................................... 85
Multifunction Tailgate — If Equipped.......... 85
Tailgate Removal ........................................ 86
Bed Step — If Equipped ............................... 89
PICKUP BOX .........................................................90
Bed Rail Tie-Down System —
If Equipped .................................................. 91
RAMBOX — IF EQUIPPED ....................................92
Locking And Unlocking RamBox ................. 93
RamBox Cargo Storage Bins ....................... 93
RamBox Safety Warning ............................. 94
Bed Divider — If Equipped ........................... 95

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SLIDE-IN CAMPERS .............................................97 Camper Applications ................................... 97
TRI-FOLD TONNEAU COVER — IF EQUIPPED .....97
Tonneau Cover Components....................... 97
Tri-Fold Tonneau Cover Folding For
Driving Or Removal ...................................... 98 Tri-Fold Tonneau Cover Installation ..........101
Tri-Fold Tonneau Cover Cleaning ..............103
GETTING TO KNOW YOUR
INSTRUMENT PANEL
BASE / MIDLINE INSTRUMENT CLUSTER —
GASOLINE ........................................................... 104
Base / Midline Instrument Cluster
Descriptions — Gasoline ............................105
PREMIUM INSTRUMENT CLUSTER —
GASOLINE ........................................................... 107
Premium Instrument Cluster
Descriptions — Gasoline ............................108
BASE / MIDLINE INSTRUMENT CLUSTER —
DIESEL ................................................................. 109
Base / Midline Instrument Cluster
Descriptions — Diesel ................................110
PREMIUM INSTRUMENT CLUSTER —
DIESEL ................................................................. 112
Premium Instrument Cluster
Descriptions — Diesel ...............................113 INSTRUMENT CLUSTER DISPLAY..................... 114
Instrument Cluster Display Controls......... 114
Oil Life Reset .............................................. 115
Display Menu Items ................................... 116
Diesel Particulate Filter (DPF)
Messages .................................................. 121 Displays ...................................................... 123
Diesel Exhaust Fluid (DEF) Warning
Messages ................................................... 123 Diesel Exhaust Fluid (DEF) Fault
Warning Messages .................................... 124 Battery Saver On/Battery Saver Mode
Message — Electrical Load Reduction
Actions — If Equipped ................................ 125
WARNING LIGHTS AND MESSAGES ................126
Red Warning Lights ................................... 126
Yellow Warning Lights ............................... 129Yellow Indicator Lights .............................. 133
Green Indicator Lights ............................... 135White Indicator Lights ............................... 136Blue Indicator Lights.................................. 137
ONBOARD DIAGNOSTIC SYSTEM — OBD II..... 137
Onboard Diagnostic System (OBD II)
Cybersecurity ............................................. 138
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS .............................138
STARTING AND OPERATING
STARTING THE ENGINE ..................................... 140
Automatic Transmission............................ 141AutoPark ..................................................... 141
Tip Start Feature ....................................... 143
Keyless Enter-N-Go — Ignition................... 143
Normal Starting Using ENGINE START/
STOP Button — Gasoline Engine .............. 143 Normal Starting Using ENGINE START/
STOP Button — Diesel Engine .................. 144 Cold Weather Operation (Below –22°F
Or −30°C) ................................................. 146 After Starting .............................................. 146Starting Fluids — Diesel Engine Only ........ 146
NORMAL OPERATION — DIESEL ENGINE ....... 146
Cold Weather Precautions ........................ 146
Engine Idling .............................................. 148Stopping The Engine ................................. 148
ENGINE BLOCK HEATER — IF EQUIPPED ....... 150
ENGINE BREAK-IN RECOMMENDATIONS —
GASOLINE ENGINE ........................................... 150
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE .................................................. 151
PARKING BRAKE ............................................... 151 Electric Park Brake (EPB) .......................... 151

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VEHICLE LOADING ............................................. 213 Gross Vehicle Weight Rating (GVWR) ......213Payload .......................................................213Gross Axle Weight Rating (GAWR) ............213
Tire Size ......................................................213
Rim Size......................................................214
Inflation Pressure ......................................214
Curb Weight................................................214
Loading .......................................................214
TRAILER TOWING .............................................. 214
Common Towing Definitions .....................214Trailer Hitch Type and Maximum Trailer
Weight.........................................................218 Trailer Towing Weights (Maximum Trailer
Weight Ratings) ..........................................218 Trailer And Tongue Weight ........................ 219Trailer Reverse Steering Control ...............219
Towing Requirements ...............................221
Towing Tips ................................................227
SNOWPLOW ...................................................... 227
Before Plowing ........................................... 228
Snowplow Prep Package Model
Availability .................................................. 228 Over The Road Operation With Snowplow
Attached .....................................................229 Operating Tips ............................................229
General Maintenance ................................229 RECREATIONAL TOWING (BEHIND
MOTORHOME) ...................................................230
Towing This Vehicle Behind Another
Vehicle ........................................................ 230 Recreational Towing — Two-Wheel Drive
Models ........................................................ 230 Recreational Towing — Four-Wheel Drive
Models ........................................................ 231
DRIVING TIPS ...................................................... 234
Driving On Slippery Surfaces ................... 234
Driving Through Water .............................. 234
Off-Road Driving Tips ................................. 235
MULTIMEDIA
UCONNECT SYSTEMS .......................................236
CYBERSECURITY ............................................... 236
UCONNECT SETTINGS ........................................ 237Customer Programmable Features .......... 237
HEAD-UP DISPLAY (HUD) .................................. 254
UCONNECT INTRODUCTION ..............................256
System Overview ....................................... 256Safety And General Information ............... 258
UCONNECT MODES ............................................259
Steering Wheel Audio Controls ................ 259
Radio Mode ............................................... 259Media Mode .............................................. 268
Phone Mode .............................................. 271 CONNECTED VEHICLE SERVICES —
IF EQUIPPED ...................................................... 282
Is My Vehicle Connected? ......................... 282
Introduction To Connected Vehicle
Services ..................................................... 282 Getting Started With Connected Vehicle
Services ..................................................... 284 Using SiriusXM Guardian™ ...................... 286
Manage My SiriusXM Guardian™
Account ...................................................... 301
CONNECTED SERVICES FAQs ......................... 301
Connected Services SOS FAQs ................ 301
Connected Services Remote Door Lock/
Unlock FAQs .............................................. 302 Connected Services Roadside
Assistance FAQs ....................................... 302 Connected Services Send & Go FAQs ..... 302Connected Services Vehicle Finder
FAQs .......................................................... 303 Connected Services Stolen Vehicle
Assistance FAQs ....................................... 303 Connected Services Remote Vehicle
Start FAQs ................................................. 303 Connected Services Remote Horn &
Lights FAQs ................................................ 304 Connected Services Account FAQs........... 304
Data Collection & Privacy .......................... 306

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12
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 104.
Red Warning Lights
Seat Belt Reminder Warning Light
Úpage 126
Air Bag Warning Light Úpage 126
Brake Warning Light Úpage 126
Hood Open Warning Light Úpage 127
Vehicle Security Warning Light — If Equipped Úpage 127
Engine Coolant Temperature Warning Light Úpage 128
Battery Charge Warning Light
Úpage 128
Oil Pressure Warning Light Úpage 128
Oil Temperature Warning Light Úpage 128
Electronic Throttle Control (ETC) Warning Light Úpage 128
Electric Power Steering Fault Warning Light Úpage 129
Tailgate Open Warning Light Úpage 129
Trailer Brake Disconnected Warning Light Úpage 129
Red Warning Lights

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Transmission Temperature Warning Light — If Equipped
Ú page 129
Door Open Warning Light Úpage 129
Yellow Warning Lights
Adaptive Cruise Control (ACC) Fault Warning
Light — If Equipped
Úpage 129
Air Suspension Fault Warning Light — If Equipped
Ú page 129
Engine Check/Malfunction Indicator Warning Light (MIL)
Ú page 130
Electronic Park Brake Warning Light Úpage 130
Electronic Stability Control (ESC) Active Warning Light — If Equipped
Úpage 130
Red Warning Lights
Electronic Stability Control (ESC) OFF Warning
Light — If Equipped
Úpage 131
Service LaneSense Warning Light — If Equipped Úpage 131
Low Washer Fluid Warning Light — If Equipped Úpage 131
Low Fuel Warning Light Úpage 131
Tire Pressure Monitoring System (TPMS) Warning Light
Ú page 131
Anti-Lock Brake System (ABS) Warning Light Úpage 132
Rear Axle Locker Fault Indicator Light — If Equipped
Ú page 132
Service Forward Collision Warning (FCW) Light — If Equipped
Ú page 132
Yellow Warning Lights
1

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Service Stop/Start System Warning Light Úpage 133
Service 4WD Warning Light — If Equipped Úpage 133
Cruise Control Fault Warning Light Úpage 133
Yellow Indicator Lights
Forward Collision Warning Off Indicator Light —
If Equipped
Ú page 133
Air Suspension Payload Protection Indicator Light — If Equipped
Úpage 133
Trailer Merge Assist Indicator Light — If Equipped
Ú page 133
TOW/HAUL Indicator Light Úpage 133
Yellow Warning Lights
Cargo Light On Indicator Light
Úpage 133
Air Suspension Off-Road 1 Indicator Light — If Equipped
Ú page 133
Air Suspension Off-Road 2 Indicator Light — If Equipped
Ú page 133
Air Suspension Normal Height Indicator Light — If Equipped
Ú page 134
Air Suspension Aerodynamic Height Indicator Light — If Equipped
Úpage 134
Entry/Exit Indicator Light — If Equipped Úpage 134
Air Suspension Ride Height Raising Indicator Light — If Equipped
Úpage 134
Yellow Indicator Lights

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Air Suspension Ride Height Lowering Indicator Light — If Equipped
Úpage 134
Rear Axle Lock Indicator Light Úpage 134
4WD Indicator Light — If Equipped Úpage 134
4WD Low Indicator Light — If Equipped Úpage 134
4WD High Indicator Light — If Equipped Úpage 134
NEUTRAL Indicator Light — If Equipped Úpage 134
Low Diesel Exhaust Fluid (DEF) Indicator Light — If Equipped
Ú page 134
Wait To Start Light — If Equipped Úpage 135
Yellow Indicator Lights
Water In Fuel Indicator Light — If Equipped
Úpage 135
Green Indicator Lights
Adaptive Cruise Control (ACC) Set With Target
Light — If Equipped
Úpage 135
Adaptive Cruise Control (ACC) Set With No
Target Detected Indicator Light — If Equipped
Úpage 135
ECO Mode Indicator Light Úpage 135
Park/Headlight On Indicator Light Úpage 135
LaneSense Indicator Light — If Equipped Úpage 137
Front Fog Indicator Light — If Equipped Úpage 136
Yellow Indicator Lights
1

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Turn Signal Indicator Lights Úpage 136
Cruise Control SET Indicator Light — If Equipped With A Premium Instrument Cluster
Úpage 136
Stop/Start Active Indicator Light Úpage 136
4WD AUTO Indicator Light — If Equipped Úpage 136
White Indicator Lights
Adaptive Cruise Control (ACC) Ready Light — If
Equipped
Ú page 136
Cruise Control Ready Indicator Úpage 136
Speed Control SET Indicator Light — If Equipped With Base/Midline Instrument Cluster Display
Úpage 136
Green Indicator Lights
Hill Descent Control (HDC) Indicator Light — If
Equipped
Ú page 137
LaneSense Indicator Light — If Equipped Úpage 137
Blue Indicator Lights
High Beam Indicator Light
Úpage 137
White Indicator Lights

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17
GETTING TO KNOW YOUR VEHICLE
KEYS
KEY FOB
Your vehicle is equipped with a key fob which
supports Passive Entry, Remote Keyless Entry
(RKE), Keyless Enter-N-Go (if equipped), and
Remote Start (if equipped). The key fob allows
you to lock or unlock all doors, tailgate, and the
RamBox (if equipped) as well as activate the
Panic Alarm from distances up to approximately
66 ft (20 m). The key fob does not need to be
pointed at the vehicle to activate the system. The
key fob also contains an emergency key, which is
stored in the rear of the key fob.
NOTE:
The key fob’s wireless signal may be blocked if
the key fob is located next to a mobile phone,
laptop, or other electronic device. This may
result in poor performance.
If your vehicle is equipped with a Wireless
Charging Pad, the key fob may not be found if
it is placed within 15 cm (150 mm) of the pad
Ú page 77.
With the ignition in the ON position and the
vehicle moving at 2 mph (4 km/h), all RKE
commands are disabled.
Key Fob
In case the ignition switch does not change with
the push of a button, the key fob may have a low
or fully depleted battery. A low key fob battery
can be verified by referring to the instrument
cluster, which will display directions to follow.
NOTE:
A low key fob battery condition may be indicated
by a message in the instrument cluster display,
or by the LED light on the key fob. If the LED key
fob light no longer illuminates from key fob
button pushes, then the key fob battery requires
replacement.
1 — Unlock
2 — LED Light
3 — Lock
4 — Tailgate Lowering
5 — Remote Start
6 — PANIC
7 — Emergency Key
8 — Air Suspension
2

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20GETTING TO KNOW YOUR VEHICLE
Programming And Requesting Additional
Key Fobs
Programming the key fob may be performed by
an authorized dealer.
NOTE:
Once a key fob is programmed to a vehicle, it
cannot be re-purposed and reprogrammed to
another vehicle.
Only key fobs that are programmed to the
vehicle electronics can be used to start and
operate the vehicle. Once a key fob is
programmed to a vehicle, it cannot be
programmed to any other vehicle.
Duplication of key fobs may be performed at an
authorized dealer. This procedure consists of
programming a blank key fob to the vehicle electronics. A blank key fob is one that has
never been programmed.
NOTE:
When having the Sentry Key Immobilizer system
serviced, bring all vehicle keys with you to an
authorized dealer Ú
page 482.
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 a key fob, keyless push button
ignition and a Radio Frequency (RF) receiver to
prevent unauthorized vehicle operation.
Therefore, only key fobs that are programmed
to the vehicle can be used to start and operate
the vehicle. The system cannot reprogram a key
fob obtained from another vehicle.
After placing the ignition switch in the ON/RUN
position, the vehicle security light will turn on for
three seconds for a bulb check. If the light
remains on after the bulb check, it indicates
that there is a problem with the electronics. In
addition, if the light begins to flash after the
bulb check, it indicates that someone attempted to start the engine with an invalid key
fob. In the event that a valid key fob is used to
start the engine but there is an issue with the
vehicle electronics, the engine will start and
shut off after two seconds.
If the vehicle security light turns on during
normal vehicle operation (vehicle running for
longer than 10 seconds), it indicates that there
is a fault in the electronics. Should this occur,
have the vehicle serviced as soon as possible by
an authorized dealer.
All of the key fobs provided with your new
vehicle have been programmed to the vehicle
electronics Ú
page 482.
WARNING!
Always remove the key fobs from the
vehicle and lock all doors when leaving the
vehicle unattended.
For vehicles equipped with Keyless
Enter-N-Go — Ignition, always remember to
place the ignition in the OFF mode.
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.

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