warning light RAM CHASSIS CAB 2019 Manual PDF

SERVICING AND MAINTENANCE 459
(Continued)NOTE:
Wheel Valve Stem must be replaced as well when installing
new tires due to wear and tear in existing tires.
Keep dismounted tires in a cool, dry place with as little expo -
sure to light as possible. Protect tires from contact with oil,
grease, and gasoline.
Replacement Tires
The tires on your new vehicle provide a balance of many
characteristics. They should be inspected regularly for wear
and correct cold tire inflation pressures. The manufacturer
strongly recommends that you use tires equivalent to the
originals in size, quality and performance when replacement
is needed. Refer to the paragraph on “Tread Wear Indica -
tors” in this section. Refer to the Tire and Loading Informa -
tion placard or the Vehicle Certification Label for the size
designation of your tire. The Load Index and Speed Symbol
for your tire will be found on the original equipment tire
sidewall.
See the Tire Sizing Chart example found in the “Tire Safety
Information” section of this manual for more information
relating to the Load Index and Speed Symbol of a tire. It is recommended to replace the two front tires or two rear
tires as a pair. Replacing just one tire can seriously affect
your vehicle’s handling. If you ever replace a wheel, make
sure that the wheel’s specifications match those of the orig -
inal wheels.
It is recommended you contact an authorized tire dealer or
original equipment dealer with any questions you may have
on tire specifications or capability. Failure to use equivalent
replacement tires may adversely affect the safety, handling,
and ride of your vehicle.
WARNING!
• Do not use a tire, wheel size, load rating, or speed rating
other than that specified for your vehicle. Some combi -
nations of unapproved tires and wheels may change
suspension dimensions and performance characteris -
tics, resulting in changes to steering, handling, and
braking of your vehicle. This can cause unpredictable
handling and stress to steering and suspension compo -
nents. You could lose control and have a collision
resulting in serious injury or death. Use only the tire
and wheel sizes with load ratings approved for your
vehicle. 7

476 TECHNICAL SPECIFICATIONS
BRAKE SYSTEM
If power assist is lost for any reason (for example, repeated
brake applications with the engine off), the brakes will still
function. However, you will experience a substantial
increase in braking effort to stop the vehicle.
If either the front or rear hydraulic system loses normal
braking capability, the remaining system will still function
with some loss of overall braking effectiveness. This will be
evident by increased pedal travel during application, greater
pedal force required to slow or stop, and activation of the
“Brake Warning Light” and the “ABS Warning Light” (if
equipped) during brake use.
The brake system power assist is provided by a hydro-boost
unit which shares fluid with the power steering system. You
may experience some clicking or hissing noises from the
hydro-boost system during hard braking conditions.
NOTE:
Under cold temperatures, pedal effort will be higher than
normal until the power steering fluid reaches operating
temperature. Hydraulic Brake Assist
The brake system power assist is provided by a hydro-boost
unit which shares fluid with the power steering system. You
may experience some clicking or hissing noises from the
hydro-boost system during hard braking conditions.
NOTE:
Under cold temperatures, pedal effort will be higher than
normal until the power steering fluid reaches operating
temperature.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to ensure that
the wheel is properly mounted to the vehicle. Any time a
wheel has been removed and reinstalled on the vehicle, the
lug nuts/bolts should be torqued using a properly calibrated
torque wrench using a high quality six sided (hex) deep wall
socket.

TECHNICAL SPECIFICATIONS 479
The wheel nuts should then be tightened to recommended
torque. Tighten the wheel nuts to final torque in increments.
Progress around the bolt circle, tightening the wheel nut
opposite to the wheel nut just previously tightened until
final torque is achieved.
FUEL REQUIREMENTS
6.4L Engine
Do not use E-85 flex fuel or ethanol blends greater than 15%
in this engine.
This engines is designed to meet all emissions regu -
lations and provide satisfactory fuel economy and
performance when using high quality unleaded
gasoline having a posted octane number range of 87 to 89 as
specified by the (R+M)/2 method. The use of 89 octane
“Plus” gasoline is recommended for optimum performance
and fuel economy. While operating on gasoline with an octane number of 87,
hearing a light knocking sound from the engine is not a cause
for concern. However, if the engine is heard making a heavy
knocking sound, see your dealer immediately. Use of gaso -
line with an octane number lower than 87 can cause engine
failure and may void or not be covered by the New Vehicle
Limited Warranty.
Poor quality gasoline can cause problems such as hard
starting, stalling, and hesitations. If you experience these
symptoms, try another brand of gasoline before considering
service for the vehicle.
Reformulated Gasoline
Many areas of the country require the use of cleaner burning
gasoline referred to as “Reformulated Gasoline”. Reformu -
lated gasoline contains oxygenates and are specifically
blended to reduce vehicle emissions and improve air quality.
The use of reformulated gasoline is recommended. Properly
blended reformulated gasoline will provide improved
performance and durability of engine and fuel system
components.WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts/bolts fully until the vehicle has
been lowered. Failure to follow this warning may result
in personal injury.
8

482 TECHNICAL SPECIFICATIONS
NOTE:
Intentional tampering with the emissions control system can
result in civil penalties being assessed against you. Carbon Monoxide Warnings
• An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to over -
heat. If you notice a pungent burning odor or some
light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact an authorized dealer for service assistance.
• The use of fuel additives, which are now being sold as
octane enhancers, is not recommended. Most of these
products contain high concentrations of methanol. Fuel
system damage or vehicle performance problems
resulting from the use of such fuels or additives is not
the responsibility of the manufacturer and may void or
not be covered under the New Vehicle Limited
Warranty. CAUTION! (Continued)
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning:
• Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas, which can kill.
Never run the engine in a closed area, such as a garage,
and never sit in a parked vehicle with the engine
running for an extended period. If the vehicle is
stopped in an open area with the engine running for
more than a short period, adjust the ventilation system
to force fresh, outside air into the vehicle.
• Guard against carbon monoxide with proper mainte -
nance. Have the exhaust system inspected every time
the vehicle is raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with all side
windows fully open.

516 MULTIMEDIA
NOTE:
When the “CHMSL Camera Dynamic Centerline” feature is selected, it will assist in backing up for trailer alignment and
hook up.
Forward Collision Warning
— If Equipped Off Warning Only Warning & Braking
NOTE:
Apples brakes to slow the vehicle in case of potential forward collision, or applies brakes and a warning.
Forward Collision Warning
Sensitivity — If Equipped Near Med Far
NOTE:
Sets the distance in which a Forward Collision Warning occurs.
Front ParkSense Volume Low Med High
Rear ParkSense Volume Low Med High
Power Side Steps — If
Equipped Auto Store
Blind Spot Alert Off Lights Lights & ChimeSetting Name Selectable Options

MULTIMEDIA 523
Air Suspension — If Equipped
After pressing the “Suspension” button on the touchscreen, the following settings will be available: Headlight Off Delay – +
NOTE:
When the “Headlight Off Delay” feature is selected, the driver can choose to have the headlights remain on for 0, 30, 60, or
90 seconds when exiting the vehicle. Setting Name Selectable Options
Setting Name Selectable Options
Display Suspension
Messages All Warnings Only
Tire Jack Mode On Off
NOTE:
When the “Tire Jack Mode” feature is selected, the air suspension system is disabled to assist with changing a spare tire.
Transport Mode On Off
NOTE:
When the “Transport Mode” feature is selected, the air suspension system lowers and then disables to assist with flat bed
towing.
Wheel Alignment Mode On Off
9

536 MULTIMEDIA
Safety & Driving Assistance
After pressing the “Safety & Driving Assistance” button on the touchscreen, the following settings will be available:
Setting Name Selectable Options
Forward Collision Warning
— If Equipped Off Warning Only Warning & Active Braking
NOTE:
Applies brakes to slow the vehicle in case of potential forward collision, or applies brakes and a warning.
Forward Collision Warning
Sensitivity — If Equipped Near Med Far
NOTE:
Sets the distance in which a Forward Collision Warning occurs.
Front ParkSense Volume Low Med High
Rear ParkSense Volume Low Med High
Blind Spot Alert Off Lights Lights & Chime
Power Side Step — If
Equipped Auto Store
Hill Start Assist — If
Equipped On Off
Tire Fill Assist — If
Equipped On Off

542 MULTIMEDIA
Engine Off Options
After pressing the “Engine Off Options” button on the touchscreen, the following settings will be available:
Suspension — If Equipped
After pressing the “Suspension” button on the touchscreen, the following settings will be available: Setting Name Selectable Options
Engine Off Power Delay + –
NOTE:
When the “Engine Off Power Delay” feature is selected, the power window switches, radio, Uconnect phone system (if
equipped), power sunroof (if equipped), and power outlets will remain active for up to ten minutes after the ignition is cycled
to OFF. Opening either front door will cancel this feature.
Headlight Off Delay + –
NOTE:
When the “Headlight Off Delay” feature is selected, the driver can choose to have the headlights remain on for 0, 30, 60, or
90 seconds when exiting the vehicle.
Setting Name Selectable Options
Display Suspension
Messages All Warning Only
Tire Jack Mode On Off
NOTE:
When the “Tire Jack Mode” feature is selected, the air suspension system is disabled to assist with changing a spare tire.
Transport Mode On Off

INDEX A
Adaptive Cruise Control (ACC) (Cruise Control) ............. 288
Adding Engine Coolant (Antifreeze) ................................... 435
Adding Fuel ............................................................................. 336
Additives, Fuel ........................................................................ 480
Adjust
Down....................................................................................... 42
Forward .................................................................................. 42
Rearward ................................................................................ 42
Up ............................................................................................ 42
Adjustable Pedals...................................................................... 55
Air Bag
Air Bag Operation ............................................................... 205
Air Bag Warning Light ....................................................... 203
Enhanced Accident Response ................................... 212, 409
Event Data Recorder (EDR) ............................................... 409
If Deployment Occurs ........................................................ 211
Knee Impact Bolsters .......................................................... 206
Maintaining Your Air Bag System.................................... 213
Maintenance......................................................................... 213
Transporting Pets ................................................................ 240
Air Bag Light ........................................................... 146, 203, 241
Air Cleaner, Engine (Engine Air Cleaner Filter) ................ 420
Air Conditioner Maintenance ............................................... 421 Air Conditioner Refrigerant ..........................................421, 422
Air Conditioner System..........................................................421
Air Conditioning ................................................................. 77, 88
Air Conditioning Filter .....................................................91, 423
Air Conditioning System .........................................................89
Air Conditioning, Operating Tips ..........................................89
Air Filter ...................................................................................420
Air Pressure
Tires .......................................................................................455
Alarm
Panic ........................................................................................18
Security Alarm ...............................................................30, 148
Alterations/Modifications
Vehicle.....................................................................................14
Android Auto ..........................................................................579
Antifreeze (Engine Coolant) ..................................................434
Capacites...............................................................................483
Disposal ................................................................................436
Anti-Lock Brake System (ABS) .............................................161
Anti-Lock Warning Light.......................................................154
Apple CarPlay .........................................................................581
Assist, Hill Start .......................................................................164
Audio Systems (Radio)........................................................... 487
Auto Down Power Windows ..................................................92

591
Auto Unlock, Doors ................................................................ 269
Automatic Door Locks ............................................................. 37
Automatic Headlights .............................................................. 68
Automatic Temperature Control (ATC) ................................ 89
Automatic Transmission ................................................ 265, 442
Adding Fluid ....................................................................... 442
Fluid And Filter Change .................................................... 442
Fluid Change........................................................................ 442
Fluid Level Check ....................................................... 439, 440
Fluid Type .................................................................... 439, 486
Shifting.................................................................................. 256
Special Additives................................................................. 439
Automatic Transmission Limp Home Mode ...................... 269
Auxiliary Driving Systems .................................................... 174
Axle Fluid................................................................. 442, 443, 486
Axle Lubrication.............................................................. 442, 443
B
Back-Up .................................................................................... 326
Back-Up Camera ..................................................................... 326
Battery............................................................................... 148, 417
Charging System Light....................................................... 148
Keyless Key Fob Replacement ............................................ 19
Battery Saver Feature ............................................................... 71
Belts, Seat ................................................................................. 241
Body Builders Guide ................................................................ 14
Body Mechanism Lubrication ............................................... 428 B-Pillar Location ......................................................................450
Brake Assist System ................................................................163
Brake Control System .............................................................162
Brake Fluid .......................................................................438, 486
Brake System....................................................................438, 476
Fluid Check ..........................................................................438
Master Cylinder ...................................................................438
Parking ..................................................................................252
Warning Light......................................................................146
Brake/Transmission Interlock ..............................................256
Bulb Replacement ...................................................................371
Bulbs, Light ......................................................................243, 371
C
Cab Top Clearance Lights ......................................................379
Camera...................................................................................... 326
Camera, Rear....................................................................326, 330
Capacities, Antifreeze (Engine Coolant) ..............................483
Capacities, Fluid ......................................................................483
Caps, Filler
Oil (Engine) ..................................................................415, 419
Power Steering .....................................................................284
Radiator (Coolant Pressure)...............................................436
Car Washes ..............................................................................471
Carbon Monoxide Warning ...........................................240, 482
Cargo Light ................................................................................71
Cellular Phone .........................................................................555 11