6
STARTING AND OPERATING
STARTING THE ENGINE .............................................. 290
Automatic Transmission ............................................ 291
Tip Start Feature ......................................................... 291
Keyless Enter-N-Go — Ignition................................. 291
Normal Starting Using ENGINE START/STOP
Button ............................................................................ 292
Cold Weather Operation (Below –22°F Or
−30°C) ........................................................................... 296
After Starting................................................................ 296
ENGINE BLOCK HEATER — IF EQUIPPED .............. 296
ENGINE BREAK-IN RECOMMENDATIONS ............ 297
PARKING BRAKE ............................................................ 297
Electric Park Brake (EPB) ........................................... 297
AUTOMATIC TRANSMISSION ................................... 302
Ignition Park Interlock ................................................ 303
Brake/Transmission Shift Interlock System ........... 304
Eight-Speed Automatic Transmission ..................... 304
FOUR-WHEEL DRIVE OPERATION — IF
EQUIPPED ........................................................................ 310
Four-Position Electronically Shifted Transfer Case
(Eight Speed Transmission Only) — If
Equipped ...................................................................... 311
Five-Position Electronically Shifted Transfer Case
(Eight Speed Transmission Only) — If
Equipped ...................................................................... 314
ACTIVE-LEVEL FOUR CORNER AIR SUSPENSION
SYSTEM — IF EQUIPPED ...............................................319
Description.................................................................... 319
Air Suspension Modes ................................................322
Instrument Cluster Display Messages ......................323
Operation ......................................................................323
ACTIVE-LEVEL FOUR CORNER AIR SUSPENSION
SYSTEM (REBEL MODELS ONLY) — IF
EQUIPPED .........................................................................325
Description.................................................................... 325
Air Suspension Modes ................................................328
Instrument Cluster Display Messages ......................329
Operation ......................................................................329
AXLE LOCKER SYSTEM — IF EQUIPPED ..................331
LIMITED-SLIP DIFFERENTIAL — IF EQUIPPED ...... 332
POWER STEERING ..........................................................333
Electric Power Steering ..............................................333
FUEL SAVER TECHNOLOGY 5.7L ENGINES ONLY —
IF EQUIPPED .....................................................................333
STOP/START SYSTEM — IF EQUIPPED .....................334
Automatic Mode ..........................................................334
Possible Reasons The Engine Does Not
Autostop........................................................................334
To Start The Engine While In Autostop Mode ........335
2020_DT_1500_OM_US.book Page 6
10
Brake System ............................................................... 512
Automatic Transmission ........................................... 513
Rear Axle And 4x4 Front Driving Axle Fluid
Level ............................................................................. 515
Transfer Case ............................................................... 515
HOISTING ......................................................................... 516
TIRES................................................................................... 516
Tire Safety Information............................................... 516
Tires — General Information .................................... 525
Tire Types ..................................................................... 531
Spare Tires — If Equipped ......................................... 532
Wheel And Wheel Trim Care .................................... 535
Tire Chains (Traction Devices) .................................. 536
Tire Rotation Recommendations .............................. 537
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES ............................................... 538
Treadwear..................................................................... 538
Traction Grades ........................................................... 538
Temperature Grades ................................................... 538
STORING THE VEHICLE................................................ 539
BODYWORK...................................................................... 539
Protection From Atmospheric Agents ...................... 539
Body And Underbody Maintenance......................... 540
Preserving The Bodywork.......................................... 540
INTERIORS .......................................................................543
Seats And Fabric Parts ................................................543
Plastic And Coated Parts ............................................544
Leather Parts.................................................................545
Glass Surfaces ..............................................................545
TECHNICAL SPECIFICATIONS
IDENTIFICATION DATA ...............................................546
Vehicle Identification Number ................................. 546
BRAKE SYSTEM ...............................................................546
WHEEL AND TIRE TORQUE SPECIFICATIONS ....... 546
Torque Specifications ..................................................547
FUEL REQUIREMENTS ..................................................548
3.6L Engine ..................................................................548
5.7L Engine ...................................................................549
Reformulated Gasoline ...............................................549
Materials Added To Fuel ............................................550
Gasoline/Oxygenate Blends ......................................550
Do Not Use E-85 In Non-Flex Fuel Vehicles ............551
CNG And LP Fuel System Modifications ................ 551
MMT In Gasoline .........................................................551
Fuel System Cautions ..................................................551
Carbon Monoxide Warnings......................................552
2020_DT_1500_OM_US.book Page 10
GETTING TO KNOW YOUR VEHICLE 35
(Continued)
DOORS
Manual Door Locks
Front and rear doors may be locked by moving the lock knob
down. The lock knobs will unlock when the interior handle
is used to open the doors.Door Lock Knob
Front doors may be opened with the inside door handle
without lifting the lock knob. Doors locked before closing will remain locked when closed.
The emergency key will unlock the driver door lock on your
vehicle.
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 colli -
sion, 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, apply the parking brake, turn
the vehicle OFF, remove the key fobs from vehicle, and
lock the vehicle.
• Never leave children alone in a vehicle, or with access to an unlocked vehicle. Leaving children in a vehicle
unattended 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.2
2020_DT_1500_OM_US.book Page 35
GETTING TO KNOW YOUR VEHICLE 77
NOTE:
The mist feature does not activate the washer pump; there-
fore, no washer fluid will be sprayed on the windshield. The
wash function must be used in order to spray the windshield
with washer fluid.
Rain Sensing Wipers — If Equipped
This feature senses rain and snowfall on the windshield and
automatically activates the wipers for the driver. The feature
is especially useful for road splash or overspray from the
windshield washers of the vehicle ahead. Rotate the end of
the multifunction lever to one of four settings to activate this
feature.
NOTE:
This feature can be programmed through the Uconnect
system. Refer to “Uconnect Settings” in “Multimedia” for
further information.
The sensitivity of the system can be adjusted with the multi -
function lever. Wiper delay position 1 is the least sensitive,
and wiper delay position 4 is the most sensitive.
NOTE:
Position 3 should be used for normal rain conditions. Positions 1 and 2 can be used if the driver desires less wiper
sensitivity. Position 4 can be used if the driver desires more
sensitivity. Place the wiper switch in the O (off) position
when not using the system.
NOTE:
• The Rain Sensing feature will not operate when the wiper
switch is in the low or high-speed position.
• The Rain Sensing feature may not function properly when ice, or dried salt water is present on the windshield.
• Use of Rain-X or products containing wax or silicone may reduce Rain Sensing performance.
The Rain Sensing system has protection features for the
wiper blades and arms, and will not operate under the
following conditions:
• Low Ambient Temperature — When the ignition is first
placed in the ON position, the Rain Sensing system will
not operate until the wiper switch is moved, vehicle speed
is greater than 0 mph (0 km/h), or the outside temperature
is greater than 32°F (0°C).
• Transmission In NEUTRAL (N) Position — When the
ignition is ON, and the transmission is in the NEUTRAL
position, the Rain Sensing system will not operate until the
2
2020_DT_1500_OM_US.book Page 77
GETTING TO KNOW YOUR INSTRUMENT PANEL 183
— Door Open Warning Light
This indicator will illuminate when a door is ajar/open and
not fully closed.
NOTE:
If the vehicle is moving there will also be a single chime.
Yellow Warning Lights
— Adaptive Cruise Control (ACC) Fault Warning Light
— If Equipped
This warning light will illuminate to indicate a fault in the
ACC system. Contact a local authorized dealer for service.
For further information, refer to “Adaptive Cruise Control
(ACC)” in “Starting And Operating.”
— Air Suspension Fault Warning Light — If Equipped
This light will illuminate when a fault is detected with the air
suspension system. — Engine Check/Malfunction Indicator Warning Light
(MIL)
The Engine Check/Malfunction Indicator Light (MIL) is a
part of an Onboard Diagnostic System called OBD II that
monitors engine and automatic transmission control
systems. This warning light will illuminate when the ignition
is in the ON/RUN position before engine start. If the bulb
does not come on when turning the ignition switch from OFF
to ON/RUN, have the condition checked promptly.
Certain conditions, such as a loose or missing gas cap, poor
quality fuel, etc., may illuminate the light after engine start.
The vehicle should be serviced if the light stays on through
several typical driving styles. In most situations, the vehicle
will drive normally and will not require towing.
When the engine is running, the MIL may flash to alert
serious conditions that could lead to immediate loss of
power or severe catalytic converter damage. The vehicle
should be serviced by an authorized dealer as soon as
possible if this occurs.
CAUTION!
Continuous driving with the Transmission Temperature
Warning Light illuminated will eventually cause severe
transmission damage or transmission failure.
3
2020_DT_1500_OM_US.book Page 183
206 SAFETY
Activating HDC
Once HDC is enabled it will activate automatically if driven
down a grade of sufficient magnitude. The set speed for
HDC is selectable by the driver, and can be adjusted by using
the gear shift +/-. The following summarizes the HDC set
speeds:
HDC Target Set Speeds
• P = No set speed. HDC may be enabled but will not activate.
• R = 0.6 mph (1 km/h)
• N = 1.2 mph (2 km/h)
• D = 0.6 mph (1 km/h)
• 1st = 0.6 mph (1 km/h)
• 2nd = 1.2 mph (2 km/h)
• 3rd = 1.8 mph (3 km/h)
• 4th = 2.5 mph (4 km/h)
• 5th = 3.1 mph (5 km/h)
• 6th = 3.7 mph (6 km/h)
• 7th = 4.3 mph (7 km/h)
• 8th = 5.0 mph (8 km/h)
• 9th = 5.6 mph (9 km/h) – If EquippedNOTE:
During HDC the +/- shifter input is used for HDC target
speed selection, but will not affect the gear chosen by the
transmission. When actively controlling HDC the transmis
-
sion will shift appropriately for the driver-selected set speed
and corresponding driving conditions.
Driver Override
The driver may override HDC activation with throttle or
brake application at anytime.
Deactivating HDC
HDC will be deactivated but remain available if any of the
following conditions occur:
• The driver overrides HDC set speed with throttle or brake application.
• The vehicle speed exceeds 20 mph (32 km/h) but remains below 40 mph (64 km/h).
• The vehicle is on a downhill grade of insufficient magni -
tude, is on level ground, or is on an uphill grade.
• The vehicle is shifted to park.
2020_DT_1500_OM_US.book Page 206
SAFETY 263
(Continued)
Your vehicle may also be designed to perform any of these
other functions in response to the Enhanced Accident
Response System:
• Turn off the Fuel Filter Heater, Turn off the HVAC BlowerMotor, Close the HVAC Circulation Door
• Cut off battery power to the: • Engine
• Electric Motor (if equipped)
• Electric power steering
• Brake booster
• Electric park brake
• Automatic transmission gear selector
• Horn
• Front wiper
• Headlamp washer pump
NOTE:
After an accident, remember to cycle the ignition to the STOP
(OFF/LOCK) position and remove the key from the ignition
switch to avoid draining the battery. Carefully check the
vehicle for fuel leaks in the engine compartment and on the
ground near the engine compartment and fuel tank before
resetting the system and starting the engine. If there are no
fuel leaks or damage to the vehicle electrical devices (e.g. headlights) after an accident, reset the system by following
the procedure described below. If you have any doubt,
contact an authorized dealer.
Enhanced Accident Response System Reset Procedure
In order to reset the Enhanced Accident Response System
functions after an event, the ignition switch must be changed
from ignition START or ON/RUN to ignition OFF. Carefully
check the vehicle for fuel leaks in the engine compartment
and on the ground near the engine compartment and fuel
tank before resetting the system and starting the engine.
Maintaining Your Air Bag System
WARNING!
• Modifications to any part of the air bag system could cause it to fail when you need it. You could be injured
if the air bag system is not there to protect you. Do not
modify the components or wiring, including adding
any kind of badges or stickers to the steering wheel hub
trim cover or the upper passenger side of the instru -
ment panel. Do not modify the front bumper, vehicle
body structure, or add aftermarket side steps or
running boards.
4
2020_DT_1500_OM_US.book Page 263
STARTING AND OPERATING 291
Automatic Transmission
Start the engine with the transmission in PARK position.
Apply the brake before shifting into any driving range.
NOTE:
• This vehicle is equipped with a transmission shift inter-
locking system. The brake pedal must be pressed to shift
out of PARK.
• If equipped with an 8-speed transmission, starting the vehicle in NEUTRAL is not possible unless the Manual
Park Release has been activated. For the Manual Park
Release operation refer to Manual Park Release in “In Case
Of Emergency”.
Tip Start Feature
Do not press the accelerator. Cycle the ignition switch briefly
to the START position and release it. The starter motor will
continue to run and will automatically disengage when the
engine is running.
Keyless Enter-N-Go — Ignition
Keyless Push Button Ignition
This feature allows the driver to operate the ignition switch
with the push of a button, as long as the Remote Start/
Keyless Enter-N-Go key fob is in the passenger compart -
ment.
5
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