SERVICING AND MAINTENANCE381
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
NOTE:For vehicles equipped with Tire Service Kit instead of a
spare tire, please refer to “Tire Service Kit” in “In Case Of
Emergency” for further information.
For restrictions when towing with a spare tire designated
for temporary emergency use
Úpage 179.
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.
Do not install a wheel cover or attempt to mount a
conventional tire on the compact spare wheel, since the
wheel is designed specifically for the compact spare tire.
Do not install more than one compact spare tire and wheel
on the vehicle at any given time.
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.
WARNING!
Compact and collapsible spares are for temporary
emergency use only. With these spares, do not drive
more than 50 mph (80 km/h). Temporary use spares have limited tread life. When the tread is worn to the
tread wear indicators, the temporary use spare tire
needs to be replaced. Be sure to follow the warnings,
which apply to your spare. Failure to do so could result
in spare tire failure and loss of vehicle control.8
23_DT_OM_EN_USC_t.book Page 381
SERVICING AND MAINTENANCE385
4x4 (4WD)
Trim Level Axle
Tire/Wheel Size Snow Traction Device
(Maximum Projection Beyond Tire Profile Or Equivalent)
Tradesman
Bighorn Lonestar Laramie Rear
275/65R18
275/55R20 S Class
Longhorn Sport
Limited Rear
275/55R20 S Class
REBEL Not Chainable
WARNING!
Using tires of different size and type (M+S, Snow) between front and rear axles can cause unpredictable handling. You could lose control and have a collision.
8
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386SERVICING AND MAINTENANCE
TIRE ROTATION RECOMMENDATIONS
Tires on the front and rear axles of vehicles operate at
different loads and perform different steering, driving, and
braking functions. For these reasons, they wear at
unequal rates.
These effects can be reduced by timely rotation of tires.
The benefits of rotation are especially worthwhile with
aggressive tread designs such as those on all season type
tires. Rotation will increase tread life, help to maintain
mud, snow and wet traction levels and contribute to a
smooth, quiet ride.
For the proper maintenance intervals
Úpage 334. More
frequent rotation is permissible if desired. The reasons for
any rapid or unusual wear should be corrected prior to
rotation being performed.
The suggested rotation method is the “rearward cross”
shown in the following diagram. This rotation pattern does
not apply to some directional tires that must not be
reversed.
Tire Rotation (Rearward Cross)
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES
The following tire grading categories
were established by the National
Highway Traffic Safety Administration.
The specific grade rating assigned by the
tire's manufacturer in each category is
shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must conform
to Federal safety requirements in
addition to these grades.
TREADWEAR
The Treadwear grade is a comparative
rating, based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course.
For example, a tire graded 150 would
wear one and one-half times as well on
the government course as a tire
graded 100.
CAUTION!
To avoid damage to your vehicle or tires, observe the
following precautions:
Because of restricted traction device clearance
between tires and other suspension components, it is
important that only traction devices in good condition
are used. Broken devices can cause serious damage.
Stop the vehicle immediately if noise occurs that could
indicate device breakage. Remove the damaged parts
of the device before further use.
Install device as tightly as possible and then retighten
after driving about ½ mile (0.8 km). Autosock traction
devices do not require retightening.
Do not exceed 30 mph (48 km/h).
Drive cautiously and avoid severe turns and large
bumps, especially with a loaded vehicle.
Do not drive for a prolonged period on dry pavement.
Observe the traction device manufacturer’s instruc -
tions on the method of installation, operating speed,
and conditions for use. Always use the suggested oper -
ating speed of the device manufacturer’s if it is less
than 30 mph (48 km/h).
Do not use traction devices on a compact spare tire.
23_DT_OM_EN_USC_t.book Page 386
SERVICING AND MAINTENANCE387
The relative performance of tires
depends upon the actual conditions of
their use, however, and may depart
significantly from the norm due to
variations in driving habits, service
practices, and differences in road
characteristics and climate.
TRACTION GRADES
The Traction grades, from highest to
lowest, are AA, A, B, and C. These grades
represent the tire's ability to stop on wet
pavement, as measured under
controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have poor
traction performance.
TEMPERATURE GRADES
The Temperature grades are A (the
highest), B, and C, representing the tire's
resistance to the generation of heat and
its ability to dissipate heat, when tested
under controlled conditions on a
specified indoor laboratory test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. The grade C corresponds to a
level of performance, which all
passenger vehicle tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel, than the
minimum required by law.
STORING THE VEHICLE
If you are storing your vehicle for more than three weeks,
we recommend that you take the following steps to
minimize the drain on your vehicle's battery:
Disconnect the negative cable from battery.
Any time you store your vehicle or keep it out of service
(i.e., vacation) for two weeks or more, run the air condi -
tioning system at idle for about five minutes in the
fresh air and high blower setting. This will ensure
adequate system lubrication to minimize the
possibility of compressor damage when the system
is started again.
WARNING!
The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not
include acceleration, cornering, hydroplaning, or peak
traction characteristics.
WARNING!
The temperature grade for this tire is established for a
tire that is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading,
either separately or in combination, can cause heat
buildup and possible tire failure.
8
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407
Lights ............................................................................ 3134WD ......................................................................... 114
Air Bag ...................................................108
, 288, 311
Air Suspension Fault............................................... 110
Brake Assist Warning ............................................. 265
Brake Warning ........................................................ 108 Bulb Replacement .................................................. 365Cargo ................................................................ 49
, 113
Center Mounted Stop ............................................. 369
Courtesy/Reading...................................................... 50
Cruise.............................................................. 115
, 116
Daytime Running ....................................................... 47
ECO Mode................................................................ 114 Electric Power Steering .......................................... 109Electronic Stability Program(ESP) Indicator .......... 109
Exterior ............................................................. 46
, 313
Fog .................................................................. 114, 368
Hazard Warning Flasher ......................................... 314
Headlights ...........................................................46
, 48
High Beam........................................................ 47, 116
High Beam/Low Beam Select ...................................47
Hill Descent Control Indicator ................................ 115
Hood Open .............................................................. 109
Illuminated Entry........................................................52
Interior ........................................................................50
LaneSense .............................................................. 115
Lights On Reminder ...................................................48
NEUTRAL ................................................................. 114 Oil Temperature ....................................................... 110
Park .......................................................................... 115
Passing....................................................................... 48
Rear Axle Lock ............................................... 112
, 114
Rear Tail Lamps....................................................... 368
Seat Belt Reminder ................................................. 110
Security Alarm.......................................................... 110
Service .....................................................................365
Service Forward Collision........................................ 112
Service LaneSense..................................................111
Service Stop Start....................................................112 Stop Start Active ...................................................... 115
Traction Control ....................................................... 265
Trailer Brake Disconnected ....................................110
Transmission Temperature..................................... 110
Turn Signals ............................................................. 366
Warning Instrument Cluster Descriptions.... 107
, 109
Limited-Slip Differential...................................... 140, 354
Load Shed Battery Saver Mode ...................................106
Load Shed Battery Saver On ........................................ 106
Load Shed Electrical Load Reduction ......................... 106
Load Shed Intelligent Battery Sensor..........................106
Loading Vehicle............................................................. 172 Tires.......................................................................... 374
Locks Automatic Door.......................................................... 27
Child Protection ......................................................... 27
Power Door ................................................................ 25
Low Tire Pressure System ............................................277
Lubrication, Body .......................................................... 347
Lug Nuts ........................................................................ 392
Lug Nuts/Bolts .............................................................. 392
MMaintenance................................................................... 73
Maintenance Free Battery ........................................... 340
Maintenance Schedule ................................................ 333
Malfunction Indicator Light (Check Engine) ............... 111
Manage My Account..................................................... 248
Manual Service ..................................................................... 401
Media Hub ...................................................................... 65 Media Mode .................................................................. 226
Memory Seat .................................................................. 29
Memory Settings ............................................................ 29
Methanol ....................................................................... 394
Midline Instrument Cluster — Gasoline
b
.................. 93
Mirrors ............................................................................. 38 Automatic Dimming .................................................. 38
Digital ......................................................................... 39
Electric Powered ....................................................... 41
Heated ....................................................................... 42
Manual Dimming....................................................... 38
Memory ...................................................................... 29
Outside....................................................................... 40
Power Folding ............................................................ 41
Rearview ........................................................... 38
, 314
Trailer Towing ............................................................ 42
Vanity ......................................................................... 39
Mobile App .................................................................... 238
Modifications/Alterations Vehicle ....................................................................... 11
Monitor, Tire Pressure System .................................... 277
Mopar Parts .................................................................. 400
MP3 Control .................................................................... 65
Multi-Function Control Lever ......................................... 47 Multifunction Tailgate .................................................... 75
11
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411
Replacement ........................................................... 380
Rotation ................................................................... 386
Run Flat ................................................................... 378
Safety.............................................................. 370
, 377
Sizes ........................................................................ 371
Snow Tires ............................................................... 381 Spare Tires ..................................................... 381
, 382
Spinning .................................................................. 379
Trailer Towing .......................................................... 179
Tread Wear Indicators ............................................ 379
Types ....................................................................... 380 Wheel Nut Torque ................................................... 392
To Open Hood..................................................................74
Tongue Weight/Trailer Weight ........................... 173
, 176
Tonneau Cover ...................................................... 86, 388
Tonneau Cover Cleaning ............................................. 388
Tow/Haul Mode............................................................ 130
Towing .................................................................. 173
, 330
Disabled Vehicle ..................................................... 330
Guide ....................................................................... 176 Recreational ............................................................ 186
Weight...................................................................... 176
Towing Behind A Motorhome ...................................... 186
Traction ......................................................................... 189
Traction Control............................................................ 268 Trailer Reverse Steering Control..................................177
Trailer Sway Control (TSC) .................................. 173
, 268
Trailer Tire Pressure ..................................................... 280
Trailer Towing ................................................................ 173 Frontal Area ............................................................. 173
Hitches .....................................................................176
Minimum Requirements ......................................... 179
Mirrors ........................................................................ 42
Tips ...........................................................................184 Trailer And Tongue Weight...................................... 176Weight Carrying Hitch.............................................. 173Weight Distributing Hitch ........................................ 174
Wiring ....................................................................... 182
Trailer Towing Guide ..................................................... 176
Trailer Weight ................................................................ 176
Transfer Case ................................................................ 354 Electronically Shifted..................................... 130
, 132
Fluid.......................................................................... 397
Transmission................................................................. 125 Automatic ....................................................... 125
, 353
Fluid.......................................................................... 397 Maintenance............................................................353Shifting .....................................................................124
Transporting Pets ......................................................... 311
Tread Wear Indicators ..................................................379
Tri-Fold Tonneau Cover .................................................. 86 Cleaning ..................................................................... 92
Install.......................................................................... 90
Removal ..................................................................... 87
Turn Signals ........................................ 49
, 115, 366, 368
UUconnect Phone Call Features................................................ 232Things You Should Know About Your Uconnect Phone................................................. 235
Uconnect Settings ................................................... 191
Uconnect (Radio) .......................................................... 191
Uconnect 4C Nav With 12-Inch Display ...................... 191
Uconnect 4C/4C Nav With 8.4-Inch Display............... 191
Uconnect Phone ..................................................229
, 230
Answer Or Ignore An Incoming Call — Call Currently In Progress .................................. 233
Answer Or Ignore An Incoming Call — No Call Currently In Progress ............................ 233
Bluetooth Communication Link.............................. 236
Call Continuation..................................................... 234
Call Controls ............................................................ 233
Call Termination ...................................................... 234
Cancel Command.................................................... 230
Connecting To A Particular Mobile Phone Or Audio Device After Pairing ............................ 231
Help Command ....................................................... 230 Join Calls.................................................................. 234
Making A Phone Or Audio Device A Favorite ......... 231
Making A Second Call While Current Call Is In Progress ......................................................... 234
Managing Your Favorites ........................................ 232 Natural Speech ....................................................... 229Operation ................................................................. 229
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