2021 RAM CHASSIS CAB tire pressure

5
LANESENSE — IF EQUIPPED ........................... 183 LaneSense Operation ................................183Turning LaneSense On Or Off ...................184LaneSense Warning Message ..................184
Changing LaneSense Status .....................186
PARKVIEW REAR BACK UP CAMERA ............ 186
AUX Camera — If Equipped .......................188
SURROUND VIEW CAMERA SYSTEM — IF
EQUIPPED ........................................................... 189
AUX Camera — If Equipped .......................194
ENGINE RUNAWAY ............................................ 195
REFUELING THE VEHICLE — GASOLINE
ENGINE ................................................................ 195
Loose Fuel Filler Cap Message ................196
REFUELING THE VEHICLE — DIESEL
ENGINE ............................................................... 196
Diesel Exhaust Fluid ..................................196
VEHICLE LOADING ............................................ 199
Gross Vehicle Weight Rating (GVWR) ......199Payload .......................................................199Gross Axle Weight Rating (GAWR) ............200
Tire Size ......................................................200
Rim Size......................................................200
Inflation Pressure ......................................200
Curb Weight................................................200
Loading .......................................................200 TRAILER TOWING ............................................... 200
Common Towing Definitions ..................... 201Trailer Hitch Type and Maximum Trailer
Weight ........................................................ 204 Trailer Towing Weights (Maximum Trailer
Weight Ratings) ......................................... 205 Trailer And Tongue Weight ....................... 205
Towing Requirements ............................... 205Towing Tips ................................................ 211
SNOWPLOW — IF EQUIPPED ............................ 212
Before Plowing ........................................... 212
Snowplow Prep Package Model
Availability .................................................. 212 Over The Road Operation With Snowplow
Attached ..................................................... 213 Operating Tips ............................................ 213General Maintenance................................ 213
RECREATIONAL TOWING (BEHIND
MOTORHOME) ...................................................214
Towing This Vehicle Behind Another
Vehicle ........................................................ 214 Recreational Towing — Two-Wheel Drive
Models ........................................................ 215 Recreational Towing — Four-Wheel Drive
Models ........................................................ 215
DRIVING TIPS ...................................................... 218
Driving On Slippery Surfaces ................... 218
Driving Through Water .............................. 218
MULTIMEDIA
UCONNECT SYSTEMS ....................................... 220
CYBERSECURITY ............................................... 220
UCONNECT 3.0 ................................................... 221 Introduction................................................ 221
Radio Mode ................................................ 222
Media Mode ............................................... 224
Phone Mode............................................... 225
UCONNECT SETTINGS ....................................... 228
Customer Programmable Features .......... 228
UCONNECT INTRODUCTION.............................. 244
System Overview ...................................... 244
Safety And General Information ............... 246
UCONNECT MODES ........................................... 247
Steering Wheel Audio Controls ................. 247
Radio Mode ............................................... 247
Media Mode .............................................. 255Phone Mode .............................................. 258
RADIO OPERATION AND MOBILE PHONES.... 269
Regulatory And Safety Information .......... 269
OFF-ROAD PAGES — IF EQUIPPED .................. 270
Off-Road Pages Status Bar ....................... 270Vehicle Dynamics ...................................... 271
Accessory Gauge ....................................... 271
Pitch & Roll................................................. 272Forward Facing Camera ............................ 272

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6
SAFETY
SAFETY FEATURES ............................................ 273
Anti-Lock Brake System (ABS) ................. 273
Electronic Brake Control (EBC) System ...274
AUXILIARY DRIVING SYSTEMS ........................ 281
Forward Collision Warning (FCW) With
Mitigation — If Equipped............................281 Tire Pressure Monitoring
System (TPMS) ..........................................284
OCCUPANT RESTRAINT SYSTEMS .................. 292
Occupant Restraint Systems Features ....292
Important Safety Precautions ...................293Seat Belt Systems ..................................... 293Supplemental Restraint Systems (SRS) ...302Child Restraints..........................................312
SAFETY TIPS ...................................................... 330
Transporting Passengers ..........................330
Transporting Pets ......................................330
Safety Checks You Should Make Inside
The Vehicle ................................................330 Periodic Safety Checks You Should Make
Outside The Vehicle ...................................332 Exhaust Gas ...............................................333Carbon Monoxide Warnings ......................333
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS .......................334
ASSIST AND SOS SYSTEM — IF EQUIPPED..... 335
JACKING AND TIRE CHANGING ........................339
4500/5500 Models .................................. 339Preparations For Jacking........................... 339
Jacking Instructions 4500 And
5500 Series ............................................... 340 To Stow The Flat Or Spare —
If Equipped ................................................ 343 Hub Caps/Wheel Covers — If Equipped ... 343
JUMP STARTING ................................................ 344
Preparations For Jump Start ..................... 344Jump Starting Procedure .......................... 345
IF YOUR ENGINE OVERHEATS .........................346
GEAR SELECTOR OVERRIDE — 6–SPEED
TRANSMISSION ................................................. 347
MANUAL PARK RELEASE — 8 – SPEED
TRANSMISSION ................................................. 348
FREEING A STUCK VEHICLE .............................349
TOWING A DISABLED VEHICLE ........................350 Two-Wheel Drive Models ........................... 351
Four-Wheel Drive Models .......................... 351Emergency Tow Hooks — If Equipped ...... 352
ENHANCED ACCIDENT RESPONSE
SYSTEM (EARS) ................................................. 352
EVENT DATA RECORDER (EDR) .......................352
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE
ENGINE ................................................................ 353
Maintenance Plan ..................................... 354
SCHEDULED SERVICING — DIESEL ENGINE .. 357
Oil Change Indicator System — Cummins
Diesel.......................................................... 357 Perform Service Indicator — Cummins
Diesel ......................................................... 358 Maintenance Plan — Cummins Diesel
Engine ....................................................... 359
ENGINE COMPARTMENT .................................. 364
6.4L Engine ............................................... 364
6.7L Engine ................................................ 365
Checking Oil Level ..................................... 366
Adding Washer Fluid ................................. 366Maintenance-Free Battery ....................... 366Pressure Washing...................................... 367
VEHICLE MAINTENANCE .................................. 367
Engine Oil .................................................. 368
Engine Oil Filter.......................................... 369
Engine Air Cleaner Filter ........................... 369
Air Conditioner Maintenance ................... 371
Accessory Drive Belt Inspection ............... 374Draining Fuel/Water Separator Filter....... 375Engine Mounted Fuel Filter
Replacement.............................................. 376

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12
Yellow Warning Lights
Adaptive Cruise Control (ACC) Fault Warning Light — If Equipped
Úpage 110
Engine Check/Malfunction Indicator Warning Light (MIL)
Ú page 110
Electronic Stability Control (ESC) Active Warning Light — If Equipped
Úpage 111
Electronic Stability Control (ESC) OFF Warning Light — If Equipped
Úpage 111
Low Washer Fluid Warning Light — If Equipped Úpage 111
Low Fuel Warning Light Úpage 111
Low Coolant Level Warning Light Úpage 111Loose Fuel Filler Cap Warning Light — If
Equipped
Ú page 111
Tire Pressure Monitoring System (TPMS) Warning Light — If Equipped
Úpage 111
Anti-Lock Brake System (ABS) Warning Light Úpage 113
Service Forward Collision Warning (FCW) Light — If Equipped
Úpage 113
Service 4WD Warning Light — If Equipped Úpage 113
Cruise Control Fault Warning Light Úpage 113
Yellow Warning Lights

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92GETTING TO KNOW YOUR INSTRUMENT PANEL
4. Push and hold the right arrow button to
select “Reset”.
5. Push and release the down arrow button
to select “Yes,” then push and release the
right arrow button to reset the Oil Life to
100%.
6. Push and release the up arrow button to
exit the instrument cluster display screen.
Secondary Method Of Resetting Engine Oil Life

1. Without pressing the brake pedal, push the ENGINE START/STOP button and place the
ignition to the ON/RUN position (do not
start the engine).

2. Fully press the accelerator pedal, slowly, three times within ten seconds.
3. Without pushing the brake pedal, push the ENGINE START/STOP button once to return
the ignition to the OFF/LOCK position.
NOTE:
If the indicator message illuminates when
you start the vehicle, the oil change indicator
system did not reset. If necessary, repeat this
procedure.DISPLAY MENU ITEMS
Push and release the up or down arrow
button until the desired selectable menu icon is
highlighted in the instrument cluster display.
Speedometer
Push and release the up or down arrow
button until the speedometer menu item is
highlighted in the instrument cluster display.
Push and release the right arrow button to
cycle the display between mph and km/h.
Vehicle Info
Push and release the up or down arrow
button until the Vehicle Info menu item is
highlighted in the instrument cluster display.
Push and release the right arrow button to
enter the submenus items of Vehicle Info.
Follow the directional prompts to access or
reset any of the following Vehicle Info submenu
items:
Tire Pressure
Coolant Temperature
Transmission Temperature — If Equipped
Oil Temperature
Oil Pressure
Exhaust Brake — If Equipped
Boost Pressure — If Equipped
Diesel Particulate Filter (DPF) — If Equipped
Oil Life
Fuel Filter Life — If Equipped
Battery Voltage
Gauge Summary
Engine Hours
Off-Road
Push and release the up or down arrow
button until the Off-Road menu icon is displayed
in the instrument cluster display. Push and
release the left or right arrow button to
scroll through the information submenus.
Drivetrain
Front Wheel Angle: displays the graphical
and numerical value of calculated
average front wheel angle from the
steering wheel orientation.

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94GETTING TO KNOW YOUR INSTRUMENT PANEL
Fuel Economy
Push and release the up or down arrow
button until the Fuel Economy menu item is
highlighted in the instrument cluster display.
Push and Hold the right arrow button to reset
Average Fuel Economy.
Current Fuel Economy Gauge
Average Fuel Economy Value
Range To Empty
Fuel Tank Levels — If Equipped
Trip A/Trip B
Push and release the up or down arrow
button until the Trip menu item is highlighted
in the instrument cluster display. Push and
release the right arrow button to enter the
submenus of Trip A and Trip B. The Trip A or Trip
B information will display the following:
Distance
Average Fuel Economy
Elapsed Time
Push and hold right arrow button to reset all
information.
Trailer Tow
Push and release the up or down arrow
button until the Trailer Tow menu item is
highlighted in the instrument cluster display.
Push and release the right or left arrow
button to cycle through the following trailer tow
information:
Trip (trailer specific) Distance: Push and hold
the OK button to reset the distance.
Integrated Trailer Brake Module (ITBM):
Braking Output
Trailer Type
ITBM Gain
Trailer Light Check: Push and hold the
OK button to begin the Trailer Light Test
sequence Ú page 209.
Trailer Tire Pressure Monitoring: The Instru-
ment Cluster Display will display the Trailer
Tire Pressure for a connected trailer with
sensors that match the active trailer profile.
When a low tire is present, the low tire value
will be displayed in red, and the affected low tire will have a red glow. “Trailer Tire Low“ will
be displayed on the center bottom of the
Instrument Cluster Display screen.
Audio
Push and release the
up or down arrow
button until the Audio Menu icon/title is
highlighted in the instrument cluster display.
This menu will display the audio source
information, including the Song name, Artist
name, and audio source with an accompanying
graphic.
Phone Call Status
When a call is incoming, a Phone Call Status
pop-up will display on the screen. The pop-up
will remain until the phone is answered or
ignored.
NOTE:
The call status will temporarily replace the
previous media source information displayed
on the screen. When the pop-up is no longer
displayed, the display will return to the last used
screen.

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GETTING TO KNOW YOUR INSTRUMENT PANEL111
Electronic Stability Control (ESC) Active
Warning Light — If Equipped

This warning light will indicate when
the ESC system is Active. The ESC
Indicator Light in the instrument
cluster will come on when the ignition
is placed in the ON/RUN or ACC/ON/RUN
position, and when ESC is activated. It should go
out with the engine running. If the ESC Indicator
Light comes on continuously with the engine
running, a malfunction has been detected in
the ESC system. If this warning light remains
on after several ignition cycles, and the vehicle
has been driven several miles (kilometers) at
speeds greater than 30 mph (48 km/h), see an
authorized dealer as soon as possible to have the
problem diagnosed and corrected.

The ESC OFF Indicator Light and the ESC Indi -
cator Light come on momentarily each time
the ignition is placed in the ON/RUN or
ACC/ON/RUN position.
The ESC system will make buzzing or clicking
sounds when it is active. This is normal; the
sounds will stop when ESC becomes inactive.
This light will come on when the vehicle is in
an ESC event.
Electronic Stability Control (ESC) OFF
Warning Light — If Equipped
This warning light indicates the ESC is
off.
Each time the ignition is turned to ON/RUN or
ACC/ON/RUN, the ESC system will be on, even
if it was turned off previously.
Low Washer Fluid Warning Light — If
Equipped
This warning light will illuminate when
the windshield washer fluid is low
Ú page 364.
Low Fuel Warning Light
When the fuel level reaches
approximately 3.2 gal (12 L) this light
will turn on, and remain on until fuel is
added.
A single warning chime will sound with Low Fuel
Warning.
Low Coolant Level Warning Light
This telltale will turn on to indicate
the vehicle coolant level is low
Ú page 367.
Loose Fuel Filler Cap Warning Light — If
Equipped
This warning light will illuminate when
the fuel filler cap is loose. Properly
close the filler cap to disengage the
light. If the light does not turn off,
please see an authorized dealer.
Tire Pressure Monitoring System (TPMS)
Warning Light — If Equipped
The warning light switches on and a
message is displayed to indicate that
the tire pressure is lower than the
recommended value and/or that slow
pressure loss is occurring. In these cases,
optimal tire duration and fuel consumption may
not be guaranteed.
Should one or more tires be in the condition
mentioned above, the display will show the
indications corresponding to each tire.
3

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112GETTING TO KNOW YOUR INSTRUMENT PANEL
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. If your
vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation
pressure label, you should determine the
proper tire inflation pressure for those tires.
As an added safety feature, your vehicle has
been equipped with a TPMS that illuminates
a low tire pressure telltale when one or more
of your tires is significantly underinflated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your
tires as soon as possible, and inflate them to
the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat
and can lead to tire failure. Under inflation also
reduces fuel efficiency and tire tread life, and
may affect the vehicle’s handling and stopping
ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if under inflation has not reached the level
to trigger illumination of the TPMS low tire
pressure telltale.

Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the
system is not operating properly. The TPMS
malfunction indicator is combined with the
low tire pressure telltale. When the system
detects a malfunction, the telltale will flash for
approximately one minute and then remain
continuously illuminated. This sequence will
continue upon subsequent vehicle start-ups
as long as the malfunction exists. When the
malfunction indicator is illuminated, the system
may not be able to detect or signal low tire
pressure as intended. TPMS malfunctions may
occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS from
functioning properly. Always check the TPMS
malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.

CAUTION!
Do not continue driving with one or more
flat tires as handling may be compromised.
Stop the vehicle, avoiding sharp braking and
steering. If a tire puncture occurs, repair
immediately using the dedicated tire repair
kit and contact an authorized dealer as soon
as possible.
CAUTION!

The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures
and warning have been established for the tire
size equipped on your vehicle. Undesirable
system operation or sensor damage may
result when using replacement equipment that
is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor damage.
Using aftermarket tire sealants may cause the
Tire Pressure Monitoring System (TPMS)
sensor to become inoperable. After using an
aftermarket tire sealant it is recommended
that you take your vehicle to an authorized
dealer to have your sensor function checked.

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134STARTING AND OPERATING
PROGRAMMABLE MAXIMUM VEHICLE
S
PEED
This feature allows the owner to set a maximum
vehicle speed for the vehicle. The 2500 and
3500 Series maximum vehicle speed can be set
between 40 mph to 87 mph (64 km/h to
140 km/h). The 4500/5500 Series maximum
vehicle speed can be set between 40 mph to
85 mph (64 km/h to 136 km/h). See an
authorized dealer to enable this feature.
NOTE:
DO NOT set the maximum vehicle speed to a
value greater than what the vehicle tires are
rated for.
OPERATING PRECAUTIONS
Avoid Overheating The Engine

The temperature of the engine coolant
(antifreeze: a mixture of 50% ethylene-glycol and
50% water) must not exceed the normal range
of the temperature gauge 240°F (116°C) with a
21 psi (145 kPa) coolant pressure cap.

Usually the engine coolant (antifreeze)
temperature indicated during operation will be
to the left of center in the normal range of the
gauge.
Avoid Low Coolant Temperature Operation
Continual operation at low engine coolant
(antifreeze) temperature below the normal
range on the gauge 140°F (60°C) can be
harmful to the engine. Low engine coolant
(antifreeze) temperature can cause incomplete
combustion which allows carbon and varnish to form on piston rings and injector nozzles.
Also, the unburned fuel can enter the
crankcase, diluting the lubricating oil and
causing rapid wear to the engine.
COOLING SYSTEM TIPS
To reduce potential for engine and transmission
overheating in high ambient temperature
conditions, take the following actions:
City Driving — When stopped, shift the trans
-
mission into NEUTRAL and increase engine
idle speed.
Highway Driving — Reduce your speed.
Up Steep Hills — Select a lower transmission
gear.
Air Conditioning — Turn it off temporarily.

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