towing RAM CHASSIS CAB 2021 Workshop Manual

SERVICING AND MAINTENANCE383

Under normal operating conditions, the catalytic
converter will not require maintenance. However,
it is important to keep the engine properly tuned
to ensure proper catalyst operation and prevent
possible catalyst damage.
NOTE:
Intentional tampering with emissions control
systems can result in civil penalties being
assessed against you.

In unusual situations involving grossly
malfunctioning engine operation, a scorching
odor may suggest severe and abnormal catalyst
overheating. If this occurs, stop the vehicle, turn off
the engine and allow it to cool. Service, including a
tune-up to manufacturer's specifications, should be
obtained immediately.

To minimize the possibility of catalytic converter
damage:
Do not interrupt the ignition when the trans
-
mission is in gear and the vehicle is in
motion.
Do not try to start the vehicle by pushing or
towing the vehicle.
Do not idle the engine with any ignition
components disconnected or removed, such
as when diagnostic testing, or for prolonged
periods during very rough idle or malfunc -
tioning operating conditions.
COOLING SYSTEM CAUTION!
The catalytic converter requires the use of
unleaded fuel only. Leaded gasoline will
destroy the effectiveness of the catalyst as
an emissions control device and may seri -
ously reduce engine performance and
cause serious damage to the engine.

Damage to the catalytic converter can result
if your vehicle is not kept in proper operating
condition. In the event of engine malfunc -
tion, particularly involving engine misfire or
other apparent loss of performance, have
your vehicle serviced promptly. Continued
operation of your vehicle with a severe
malfunction could cause the converter to
overheat, resulting in possible damage to
the converter and vehicle.

WARNING!

You or others can be badly burned by hot
engine coolant (antifreeze) or steam from your
radiator. If you see or hear steam coming from
under the hood, do not open the hood until the
radiator has had time to cool. Never open a
cooling system pressure cap when the radiator
or coolant bottle is hot.

Keep hands, tools, clothing, and jewelry
away from the radiator cooling fan when
the hood is raised. The fan starts automati -
cally and may start at any time, whether the
engine is running or not.
When working near the radiator cooling fan,
disconnect the fan motor lead or turn the
ignition to the OFF mode. The fan is
temperature controlled and can start at any
time the ignition is in the ON mode.
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412SERVICING AND MAINTENANCE
For further information on GAWRs, vehicle
loading, and trailer towing, refer to “Vehicle
Loading” in the “Starting And Operating”
section of this manual.

To determine the maximum loading conditions of
your vehicle, locate the statement “The combined
weight of occupants and cargo should never exceed
XXX kg or XXX lbs” on the Tire and Loading
Information placard. The combined weight of
occupants, cargo/luggage and trailer tongue weight
(if applicable) should never exceed the weight
referenced here.

Steps For Determining Correct Load
Limit—
(1) Locate the statement “The combined
weight of occupants and cargo should
never exceed XXX kg or XXX lbs.” on your
vehicle's placard.
(2) Determine the combined weight of
the driver and passengers that will be
riding in your vehicle.
(3) Subtract the combined weight of the
driver and passengers from XXX kg or
XXX lbs. (4) The resulting figure equals the
available amount of cargo and luggage
load capacity. For example, if “XXX”
amount equals 1400 lbs. and there will
be five 150 lb passengers in your
vehicle, the amount of available cargo
and luggage load capacity is 650 lbs.
(1400-750 (5x150) = 650 lbs.)
(5) Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weight may not safely
exceed the available cargo and luggage
load capacity calculated in Step 4.
(6) If your vehicle will be towing a trailer,
load from your trailer will be transferred
to your vehicle. Consult this manual to
determine how this reduces the
available cargo and luggage load
capacity of your vehicle.
Metric Example For Load Limit
For example, if “XXX” amount equals 635 kg
and there will be five 68 kg passengers in your
vehicle, the amount of available cargo and
luggage load capacity is 295 kg (635-340
(5x68) = 295 kg) as shown in step 4.
NOTE:

If your vehicle will be towing a trailer, load from
your trailer will be transferred to your vehicle.
The following table shows examples on how to
calculate total load, cargo/luggage, and
towing capacities of your vehicle with varying
seating configurations and number and size
of occupants. This table is for illustration
purposes only and may not be accurate for the
seating and load carry capacity of your vehicle.

For the following example, the combined
weight of occupants and cargo should never
exceed 865 lbs (392 kg).

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SERVICING AND MAINTENANCE419
Summer tires do not contain the all season
designation or mountain/snowflake symbol on
the tire sidewall. Use Summer tires only in sets
of four; failure to do so may adversely affect the
safety and handling of your vehicle.
Snow Tires
Some areas of the country require the use of
snow tires during the Winter. Snow tires can be
identified by a “mountain/snowflake” symbol
on the tire sidewall.
If you need snow tires, select tires
equivalent in size and type to the
original equipment tires. Use snow
tires only in sets of four; failure to do
so may adversely affect the safety and handling
of your vehicle. Snow tires generally have lower speed ratings
than what was originally equipped with your
vehicle and should not be operated at
sustained speeds over 75 mph (120 km/h).
For speeds above 75 mph (120 km/h) refer to
original equipment or an authorized tire dealer
for recommended safe operating speeds,
loading and cold tire inflation pressures.
While studded tires improve performance
on ice, skid and traction capability on wet or
dry surfaces may be poorer than that of
non-studded tires. Some states prohibit
studded tires; therefore, local laws should
be checked before using these tire types.SPARE TIRES — IF EQUIPPED
For restrictions when towing with a spare tire
designated for temporary emergency use
Ú
page 206.
Spare Tire Matching Original Equipped Tire
And Wheel — If Equipped
Your vehicle may be equipped with a spare tire
and wheel equivalent in look and function to the
original equipment tire and wheel found on the
front or rear axle of your vehicle. This spare tire
may be used in the tire rotation for your vehicle.
If your vehicle has this option, refer to an
authorized tire dealer for the recommended tire
rotation pattern.
Compact Spare Tire — If Equipped
The compact spare is for temporary emergency
use only. You can identify if your vehicle is
equipped with a compact spare by looking at
the spare tire description on the Tire and
Loading Information Placard located on the
driver’s side door opening or on the sidewall of
the tire. Compact spare tire descriptions begin
with the letter “T” or “S” preceding the size
designation. Example: T145/80D18 103M.
T, S = Temporary Spare Tire
Since this tire has limited tread life, the original
equipment tire should be repaired (or replaced)
and reinstalled on your vehicle at the first
opportunity.
WARNING!
Do not use Summer tires in snow/ice
conditions. You could lose vehicle control,
resulting in severe injury or death. Driving too
fast for conditions also creates the possibility
of loss of vehicle control.
CAUTION!
Because of the reduced ground clearance, do
not take your vehicle through an automatic
car wash with a compact or limited use
temporary spare installed. Damage to the
vehicle may result.8

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452 Diesel Exhaust Brake
.................................... 138Diesel Fuel..................................................... 436Diesel Fuel Requirements............................. 436Diesel Fuel System, Re-Priming..................... 378Differential, Limited Slip................................ 162Dipsticks Power Steering.......................................... 163Disabled Vehicle Towing................................ 350Disc Drive...................................................... 255Disconnecting................................................ 262DisposalAntifreeze (Engine Coolant)....................... 385Disturb........................................................... 265Door Ajar........................................................ 110Door Ajar Light............................................... 110Door LocksAutomatic.................................................... 28Doors............................................................... 24Draining Fuel/Water Separator Filter............ 375Driver Memory Presets.................................. 253Driver’s Seat Back Tilt..................................... 33DrivingThrough Flowing, Rising, Or Shallow Standing Water
.................................................... 218Dual Rear Wheels....................... 342, 425, 432
E
Electric Brake Control System....................... 274Anti-Lock Brake System............................. 273Electronic Roll Mitigation................. 275, 281
Electrical Power Outlets................................... 73Electronic Range Select (ERS)............. 145, 150Electronic Stability Control (ESC).................. 275Electronic Throttle Control Warning Light...... 109Electronically Shifted Transfer Case.... 153, 156Emergency Braking....................................... 137Emergency, In Case OfFreeing Vehicle When Stuck..................... 349Hazard Warning Flasher........................... 334Jacking..................................................... 339Jump Starting........................................... 344Emission Control System Maintenance........ 117Engine.................................................. 364, 365Air Cleaner................................................ 369Block Heater............................................. 125Break-In Recommendations............ 136, 137Compartment........................................... 365Compartment Identification...................... 364Coolant (Antifreeze).................................. 440Exhaust Gas Caution................................ 333Fails To Start............................................ 121Flooded, Starting...................................... 121Fuel Requirements................................... 433Identification............................................ 365Idling........................................................ 131Jump Starting........................................... 344Oil.................................................... 368, 440Oil Filler Cap............................................. 364Oil Filter.................................................... 369
Oil Reset......................................................91Oil Selection.............................................. 368Oil Synthetic.............................................. 368Overheating.............................................. 346Runaway................................................... 195Starting..................................................... 119Enhanced Accident Response
Feature................................................ 310, 352Entry System, Illuminated................................56Ethanol.......................................................... 434Exhaust Brake............................................... 138Exhaust Gas Cautions................................... 333Exhaust System..........................333, 382, 391Exterior Lighting...............................................50Exterior Lights........................................ 50, 332
F
FiltersAir Cleaner
................................................ 369Air Conditioning................................. 65, 372Engine Fuel...................................... 375, 440Engine Oil........................................ 369, 440Engine Oil Disposal................................... 369FlashersTurn Signals.............................. 54, 115, 332Flash-To-Pass...................................................52Flat Tire Stowage.......................................... 343Fluid Capacities............................................ 439Fluid Leaks.................................................... 332

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453
Fluid Level Checks Brake
........................................................ 387Power Steering.......................................... 163Fog Lights............................................... 53, 404Fold Flat Load Floor......................................... 70Fold-Flat Seats................................................. 33Forward Collision Warning............................. 281Four Wheel Drive........................................... 153Four-Way Hazard Flasher............................... 334Freeing A Stuck Vehicle................................. 349Front Axle (Differential).................................. 390Fuel............................................ 196, 433, 436Adding....................................................... 195Additives................................................... 434Clean Air.................................................... 433Diesel.............................................. 196, 436Ethanol...................................................... 434Filler Cap (Gas Cap)................................... 196Filter................................................ 375, 440Gasoline.................................................... 433Light.......................................................... 111Materials Added........................................ 434Methanol................................................... 434Octane Rating........................................... 433Requirements................................. 433, 436Specifications............................................ 436Tank Capacity............................................ 439Fuses............................................................. 394
G
Garage Door Opener (HomeLink)..................... 47Gas Cap (Fuel Filler Cap).............................. 196Gasoline, Clean Air........................................ 433Gasoline, Reformulated................................ 433GaugesVoltage..................................................... 128Gear Ranges................................................. 147Gear Selector Override................................. 347Glass Cleaning.............................................. 430Gross Axle Weight Rating.............................. 201Gross Vehicle Weight Rating......................... 201GuideBody Builders.............................................. 10GVWR............................................................ 199
H
HazardDriving Through Flowing, Rising, Or Shallow Standing Water
.................................... 218Hazard Warning Flashers.............................. 334Head Restraints............................................... 38Head Rests...................................................... 38Headlights.................................................... 402Automatic High Beam.................................. 52Cleaning................................................... 427High Beam................................................... 51Lights On Reminder..................................... 53Passing........................................................ 52Switch.......................................................... 50
Heated Mirrors.................................................46Heated Seats...................................................37Hill Descent Control...................................... 278Hill Descent Control Indicator....................... 278Hill Start Assist.............................................. 280HitchesTrailer Towing........................................... 204HomeLink (Garage Door Opener).....................47Hood Prop........................................................79Hood Release...................................................79Hub Caps...................................................... 343
I
Idle-Up Feature............................................. 132Ignition.............................................................18Switch..........................................................18Illuminated Entry..............................................56Inside Rearview Mirror.................... 41, 42, 335Instrument Cluster...................... 85, 86, 88, 89Descriptions.............................................. 115Display.........................................................90Engine Oil Reset..........................................91Instrument Panel Lens Cleaning................... 429Integrated Trailer Brake Control.................... 207Interior Appearance Care.............................. 428Interior Lights...................................................55Intermittent Wipers (Delay Wipers)..................57Intervention Regeneration Strategy..... 101, 379Inverter Outlet (115V)......................................74
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455
Manual Park Release
............................................. 348Service...................................................... 448Media Hub....................................................... 72Media Mode.................................................. 255Memory Seat................................................... 32Memory Settings............................................. 32Methanol....................................................... 434Mirrors............................................................. 41Electric Powered......................................... 44Heated........................................................ 46Memory....................................................... 32Outside........................................................ 44Rearview..................................... 41, 42, 335Trailer Towing.............................................. 46Modifications/AlterationsVehicle........................................................ 10Monitor, Tire Pressure System....................... 284Mopar Parts................................................... 447MP3 Control.................................................... 72Multi-Function Control Lever............................ 51
N
Navigation System (Uconnect GPS)............... 186New Vehicle Break-In Period................ 136, 137Noise ControlMaintenance............................................. 391Tampering Prohibited................................ 392Noise Emission Warranty..................... 391, 392
O
Occupant Restraints..................................... 292Octane Rating, Gasoline (Fuel)..................... 433Oil Change Indicator..................................... 357Oil Filter, Change.......................................... 369Oil Filter, Selection........................................ 369Oil Pressure Light.......................................... 108Oil Reset.......................................................... 91Oil, Engine............................................ 368, 440Capacity.................................................... 439Dipstick.................................................... 366Disposal................................................... 369Filter................................................ 369, 440Filter Disposal........................................... 369Identification Logo.................................... 368Materials Added To.................................. 368Pressure Warning Light............................ 108Recommendation..................................... 368Synthetic.................................................. 368Onboard Diagnostic System.......................... 116Operating Precautions.................................. 116Operator ManualOwner's Manual........................................ 448Outside Rearview Mirrors................................ 44Overdrive...................................................... 151Overdrive OFF Switch.................................... 151Overheating, Engine...................................... 346
P
Paint Care..................................................... 427Pair (Link) Uconnect Phone To A Mobile
Phone .................................................... 260Parking Brake............................................... 137ParkSense System, Rear............................... 177Passive Entry....................................................26Pedals, Adjustable...........................................40Pets............................................................... 330Phone Mode.................................................. 258Placard, Tire And Loading Information.......... 411Power
Distribution Center (Fuses)....................... 395Door Locks...................................................25Mirrors.........................................................44Outlet (Auxiliary Electrical Outlet)..........73, 74Seats...........................................................35Sliding Rear Window....................................78Steering............................................. 44, 163Take-Off Adapter....................................... 163Take-Off Operation.................................... 163Windows......................................................76Power SeatsDown...........................................................35Forward.......................................................35Rearward.....................................................35Recline.........................................................35Tilt................................................................35Up................................................................35
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456 Power Steering Fluid
...................................... 444Pregnant Women And Seat Belts...................300Preparation For Jacking................................. 339Presets.......................................................... 253PTO (Power Take-Off)..................................... 163
R
Radial Ply Tires.............................................. 416Radiator Cap (Coolant Pressure Cap).. 384, 385Radio Presets...................................................... 253Radio Controls............................................... 247Radio Mode................................................... 247Radio Operation.................................. 247, 269Radio Remote Controls.................................. 247Rain Sensitive Wiper System........................... 58Rear Axle (Differential)......................... 390, 391Rear Camera................................................. 189Rear ParkSense System................................ 177Rear Window, Sliding....................................... 78Recreational Towing...................................... 214Shifting Into Transfer Case Neutral (N)..... 216Shifting Out Of Transfer Case Neutral (N).. 217Reformulated Gasoline.................................. 433Refrigerant.................................................... 372Release, Hood................................................. 79Reminder, Seat Belt...................................... 294Remote Keyless Entry...................................... 15Programming Additional Key Fobs.............. 17Remote Sound System (Radio) Control......... 247
Remote Start (Diesel)...................................... 22Remote Start (Gasoline).................................. 20Remote StartingExit Remote Start Mode.............................. 21Replacement Bulbs...................................... 401Replacement Tires........................................ 417Reporting Safety Defects.............................. 447Resetting Perform Service Indicator............. 358Restraints, Child........................................... 312Restraints, Head.............................................. 38Rotation, Tires.............................................. 424
S
Safety........................................................... 246Safety Checks Inside Vehicle........................ 330Safety Checks Outside Vehicle..................... 332Safety Defects, Reporting............................. 447Safety Features............................................. 246Safety Information, Tire................................ 406Safety Tips.................................................... 330Safety, Exhaust Gas...................................... 333Satellite Radio.............................................. 249Saved Radio Stations................................... 253Schedule, Maintenance................................ 353Seat BeltAutomatic Locking Retractor (ALR)........... 301Seat Belt Reminder....................................... 107Seat Belts............................................ 293, 330Adjustable Shoulder Belt.......................... 297
Adjustable Upper Shoulder Anchorage..... 297Adjustable Upper Shoulder Belt Anchorage............................................ 297Child Restraints........................................ 312Extender................................................... 299Front Seat........................................ 293, 296Inspection................................................. 330Lap/Shoulder Belt Operation.................... 296Lap/Shoulder Belt Untwisting................... 297Operating Instructions.............................. 296Pregnant Women...................................... 300Reminder.................................................. 294Seat Belt Extender.................................... 299Seat Belt Reminder.................................. 294Untwisting Procedure................................ 297Seat Belts Maintenance................................ 429Seats.................................................. 33, 34, 35Adjustment...........................................33, 35Easy Entry....................................................36Folding Floor................................................70Head Restraints...........................................38Memory.......................................................32Power...........................................................35Rear Folding................................................33Tilting...........................................................33Security Alarm........................................ 23, 108Selection Of Coolant (Antifreeze).................. 440Sentry Key (Immobilizer)..................................17Service Assistance........................................ 445Service Contract............................................ 446

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458 Rotation
.................................................... 424Safety.............................................. 406, 414Sizes.......................................................... 407Snow Tires................................................. 419Spare Tires............................. 419, 420, 421Spinning.................................................... 416Trailer Towing............................................ 206Tread Wear Indicators............................... 417Wheel Nut Torque..................................... 432To Open Hood.................................................. 79Tongue Weight/Trailer Weight....................... 205Torque Converter Clutch................................ 151Towing................................................. 200, 350Disabled Vehicle........................................ 350Guide......................................................... 205Recreational.............................................. 214Weight....................................................... 205Towing Behind A Motorhome......................... 214Traction......................................................... 218Traction Control............................................. 281Trailer Sway Control (TSC)............................. 281Trailer Towing................................................ 200Hitches...................................................... 204Minimum Requirements............................ 205Mirrors......................................................... 46Tips........................................................... 211Trailer And Tongue Weight........................ 205Wiring........................................................ 209Trailer Towing Guide...................................... 205Trailer Weight................................................ 205
Transfer Case............................................... 391Electronically Shifted....................... 153, 156Fluid......................................................... 444Transmission................................................ 141Automatic............................... 141, 146, 387Fluid......................................................... 444Maintenance............................................ 387Shifting..................................................... 140Transporting Pets.......................................... 330Tread Wear Indicators.................................. 417Turn Signals.................................. 54, 115, 402
U
UconnectPhone Call Features
................................. 264Things You Should Know About Your Uconnect Phone................................... 267Uconnect Phone.................................. 259, 260Answer Or Ignore An Incoming Call — Call Currently In Progress..................... 265Answer Or Ignore An Incoming Call — No Call Currently In Progress................ 265Bluetooth Communication Link................ 269Call Continuation...................................... 266Call Controls............................................. 264Call Termination....................................... 266Cancel Command..................................... 260Connecting To A Particular Mobile Phone Or Audio Device After Pairing............... 262
Help Command......................................... 260Join Calls.................................................. 266Making A Phone Or Audio Device A Favorite................................................ 262Making A Second Call While Current Call Is In Progress................................. 266Managing Your Favorites.......................... 263Natural Speech......................................... 259Operation.................................................. 259Overview................................................... 258Pair (Link) Uconnect Phone To A Mobile Phone....................................... 260Phonebook Download............................... 263Place/Retrieve A Call From Hold............... 266Power-Up.................................................. 269Recent Calls.............................................. 264Redial....................................................... 266To Remove A Favorite............................... 263Toggling Between Calls............................. 266Touch-Tone Number Entry........................ 264Transfer Call To And From Mobile Phone.. 266Voice Command....................................... 267Uconnect SettingsCustomer Programmable Features..............26Passive Entry Programming.........................26Uconnect System.......................................... 244Uniform Tire Quality Grades.......................... 425Unleaded Gasoline........................................ 433Untwisting Procedure, Seat Belt.................... 297USB..................................................................72

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