2015 JEEP WRANGLER Owners Manual

STARTING AND OPERATING
CONTENTS
!STARTING PROCEDURES................420
▫Manual Transmission — If Equipped.......420
▫Automatic Transmission — If Equipped.....421
▫Normal Starting.......................421
▫Extreme Cold Weather (Below –20°F Or
−29°C).............................421
▫If Engine Fails To Start.................422
▫After Starting........................424
!ENGINE BLOCK HEATER — IF EQUIPPED . . .424
!MANUAL TRANSMISSION — IF EQUIPPED . . .424
▫Shifting.............................425
▫Downshifting........................426
▫Reverse Shifting......................428
!AUTOMATIC TRANSMISSION —
IF EQUIPPED.........................429
▫Key Ignition Park Interlock...............431
▫Brake/Transmission Shift Interlock System . . .431
▫Five-Speed Automatic Transmission — If
Equipped...........................431
▫Gear Ranges.........................433
5

!AUTOSTICK..........................439
▫Operation...........................439
!FOUR–WHEEL DRIVE OPERATION (COMMAND-
TRAC I® OR ROCK-TRAC®)..............441
▫Operating Instructions/Precautions........441
▫Shift Positions........................443
▫Shifting Procedure.....................445
!TRAC-LOK® REAR AXLE — IF EQUIPPED . . .446
!AXLE LOCK (TRU–LOK®) — RUBICON
MODELS............................446
!ELECTRONIC SWAY BAR DISCONNECT —
IF EQUIPPED.........................447
!ON-ROAD DRIVING TIPS................449
!OFF-ROAD DRIVING TIPS................450
▫Side Step Removal — If Equipped..........450
▫The Basics Of Off-Road Driving...........451
▫When To Use 4L (Low) Range.............452
▫Simultaneous Brake And Throttle Operation. . .452
▫Driving In Snow, Mud And Sand..........453
▫Crossing Obstacles (Rocks And Other
High Points).........................454
▫Hill Climbing........................457
▫Driving Through Water.................460
▫After Driving Off-Road.................462
!POWER STEERING.....................464
▫Power Steering Fluid Check..............465
!PARKING BRAKE......................466
416 STARTING AND OPERATING

!BRAKE SYSTEM.......................468
!ELECTRONIC BRAKE CONTROL SYSTEM . . . .469
▫Anti-Lock Brake System (ABS)............469
▫Traction Control System (TCS)............471
▫Brake Assist System (BAS)...............471
▫Hill Start Assist (HSA).................472
▫Electronic Roll Mitigation (ERM)..........476
▫Electronic Stability Control (ESC)..........477
▫ESC Activation/Malfunction Indicator Light And
ESC OFF Indicator Light................483
▫Trailer Sway Control (TSC)..............484
▫Hill Descent Control (HDC) — If Equipped . . .485
!TIRE SAFETY INFORMATION.............487
▫Tire Markings........................487
▫Tire Identification Number (TIN)...........490
▫Tire Terminology And Definitions..........492
▫Tire Loading And Tire Pressure...........493
!TIRES — GENERAL INFORMATION........498
▫Tire Pressure........................498
▫Tire Inflation Pressures.................500
▫Tire Pressures For High Speed Operation . . . .501
▫Radial Ply Tires......................501
▫Tire Types...........................502
▫Run Flat Tires — If Equipped.............504
▫Spare Tires — If Equipped...............504
▫Tire Spinning........................507
5
STARTING AND OPERATING 417

▫Tread Wear Indicators..................507
▫Life Of Tire.........................508
▫Replacement Tires.....................509
!TIRE CHAINS (TRACTION DEVICES).......510
!TIRE ROTATION RECOMMENDATIONS.....512
!TIRE PRESSURE MONITOR SYSTEM (TPMS) . . .513
▫Base TPM System.....................517
▫Premium System — If Equipped...........520
▫General Information...................525
!FUEL REQUIREMENTS..................525
▫3.6L Engine..........................525
▫Reformulated Gasoline.................526
▫Gasoline/Oxygenate Blends..............526
▫E-85 Usage In Non-Flex Fuel Vehicles.......527
▫MMT In Gasoline.....................527
▫Materials Added To Fuel................528
▫Fuel System Cautions...................528
▫Carbon Monoxide Warnings.............529
!ADDING FUEL........................530
▫Fuel Filler Cap (Gas Cap)...............530
▫Loose Fuel Filler Cap Message............531
!VEHICLE LOADING....................532
▫Certification Label....................532
!TRAILER TOWING.....................534
▫Common Towing Definitions.............534
▫Trailer Hitch Classification...............537
418 STARTING AND OPERATING

▫Trailer Towing Weights (Maximum Trailer Weight
Ratings)............................538
▫Trailer And Tongue Weight..............545
▫Towing Requirements..................546
▫Towing Tips.........................551
!RECREATIONAL TOWING (BEHIND
MOTORHOME, ETC.)...................553
▫Towing This Vehicle Behind Another Vehicle . . .553
▫Recreational Towing — Four-Wheel Drive
Models.............................554
5
STARTING AND OPERATING 419

STARTING PROCEDURES
Before starting your vehicle, adjust your seat, adjust both
inside and outside mirrors, and fasten your seat belts.
WARNING!
•When leaving the vehicle, always remove the Key
Fob from the ignition and lock your vehicle.
•Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing children to
be 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 shift lever.
(Continued)
WARNING!(Continued)
•Do not leave the Key Fob in or near the vehicle (or
in a location accessible to children), and do not
leave Keyless Enter-N-Go™ in the ACC or ON/
RUN mode. A child could operate power windows,
other controls, or move the vehicle.
Manual Transmission — If Equipped
Apply the parking brake, place the shift lever in NEU-
TRAL, and press the clutch pedal before starting the
vehicle. This vehicle is equipped with a clutch interlock-
ing ignition system. It will not start unless the clutch
pedal is pressed to the floor.
Four-Wheel Drive Models Only
In 4L mode, this vehicle will start regardless of whether
or not the clutch pedal is pressed to the floor. This feature
enhances off-road performance by allowing the vehicle to
start when in 4L without having to press the clutch pedal.
420 STARTING AND OPERATING

The “4WD Indicator Light” will illuminate when the
transfer case has been shifted into this mode.
Automatic Transmission — If Equipped
Start the vehicle with the shift lever in the PARK position
(vehicle can also be started in NEUTRAL). Apply the
brake before shifting to any driving range.
Normal Starting
NOTE:Normal starting of either a cold or a warm engine
is obtained without pumping or pressing the accelerator
pedal.
Cycle the ignition switch to the START position and
release when the engine starts. If the engine fails to start
within 10 seconds, cycle the ignition switch to the
LOCK/OFF position, wait 10 to 15 seconds, then repeat
the “Normal Starting” procedure.
Tip Start Feature — Automatic Transmission Only
Turn the ignition switch to the START position and
release it as soon as the starter engages. The starter motor
will continue to run, but will automatically disengage
itself when the engine is running. If the engine fails to
start, the starter will disengage automatically in 10 sec-
onds. If this occurs, turn the ignition switch to the LOCK
position, wait 10 to 15 seconds, then repeat the “Normal
Starting” procedure.
Extreme Cold Weather (Below –20°F Or−29°C)
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater (avail-
able from your authorized dealer) is recommended.
5
STARTING AND OPERATING 421

If Engine Fails To Start
WARNING!
•Never pour fuel or other flammable liquids into
the throttle body air inlet opening in an attempt to
start the vehicle. This could result in a flash fire
causing serious personal injury.
•Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
mission cannot be started this way. Unburned fuel
could enter the catalytic converter and, once the
engine has started, ignite and damage the converter
and vehicle.
(Continued)
WARNING!(Continued)
•If the vehicle has a discharged battery, booster
cables may be used to obtain a start from a booster
battery or the battery in another vehicle. This type
of start can be dangerous if done improperly. Refer
to “Jump Starting” in “What To Do In Emergen-
cies” for further information.
Without Tip Start — Manual Transmission Only
If the engine fails to start after you have followed the
“Normal Starting” or “Extreme Cold Weather” proce-
dures, it may be flooded. Push the accelerator pedal all
the way to the floor and hold it there while cranking the
engine. This should clear any excess fuel in case the
engine is flooded.
422 STARTING AND OPERATING