JEEP WRANGLER 2013 JK / 3.G Owners Manual

STARTING AND OPERATING
CONTENTS
STARTING PROCEDURES ................414
▫ Manual Transmission – If Equipped ........414
▫ Automatic Transmission – If Equipped ......415
▫ Normal Starting ...................... .415
▫ Extreme Cold Weather
(Below –20°F Or 29°C) ................416
▫ If Engine Fails To Start .................416
▫ After Starting ....................... .418
 ENGINE BLOCK HEATER — IF EQUIPPED . . .418 
MANUAL TRANSMISSION — IF EQUIPPED . .418
▫ Shifting ............................ .419
▫ Downshifting ....................... .420
▫ Reverse Shifting ..................... .422
 AUTOMATIC TRANSMISSION — IF
EQUIPPED .......................... .422
▫ Key Ignition Park Interlock ...............424
▫ Brake/Transmission Shift Interlock System . . .424
▫ Five-Speed Automatic Transmission ........424
▫ Gear Ranges ........................ .426
5

FOUR–WHEEL DRIVE OPERATION
(COMMAND-TRAC I® OR ROCK-TRAC®) . . . .433
▫ Operating Instructions/Precautions ........433
▫ Shift Positions ....................... .435
▫ Shifting Procedure .....................436
 TRAC-LOK® REAR AXLE — IF EQUIPPED . . .437
 AXLE LOCK (TRU–LOK®) — RUBICON
MODELS ........................... .438
 ELECTRONIC SWAY BAR DISCONNECT — IF
EQUIPPED .......................... .439
 ON-ROAD DRIVING TIPS ................441
 OFF-ROAD DRIVING TIPS ................442
▫ Side Step Removal – If Equipped ..........442
▫ The Basics Of Off-Road Driving ...........443▫
When To Use 4L (Low) Range .............443
▫ Simultaneous Brake And Throttle Operation. . .444
▫ Driving In Snow, Mud And Sand ..........444
▫ Crossing Obstacles (Rocks And Other
High Points) ........................ .446
▫ Hill Climbing ....................... .448
▫ Driving Through Water .................451
▫ After Driving Off-Road .................453
 POWER STEERING .....................455
▫ Power Steering Fluid Check ..............456
 PARKING BRAKE ..................... .456
 ANTI-LOCK BRAKE SYSTEM .............459
 ELECTRONIC BRAKE CONTROL SYSTEM . . . .460
410 STARTING AND OPERATING

▫Traction Control System (TCS) ............461
▫ Brake Assist System (BAS) ...............462
▫ Hill Start Assist (HSA) .................463
▫ Electronic Roll Mitigation (ERM) ..........466
▫ Electronic Stability Control (ESC) ..........467
▫ ESC Activation/Malfunction Indicator
Light And ESC OFF Indicator Light ........472
▫ Trailer Sway Control (TSC) ..............473
▫ Hill Descent Control (HDC) – If Equipped . . .474
 TIRE SAFETY INFORMATION .............476
▫ Tire Markings ....................... .476
▫ Tire Identification Number (TIN) ...........479▫
Tire Terminology And Definitions ..........481
▫ Tire Loading And Tire Pressure ...........482
 TIRES — GENERAL INFORMATION .........487
▫ Tire Pressure ....................... .487
▫ Tire Inflation Pressures .................489
▫ Tire Pressures For High Speed Operation . . . .490
▫ Radial Ply Tires ..................... .491
▫ All Season Tires – If Equipped ............491
▫ Summer Or Three Season Tires – If Equipped. .492
▫ Snow Tires ......................... .492
▫ Spare Tire Matching Original Equipped Tire
And Wheel – If Equipped ................493
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STARTING AND OPERATING 411

▫Compact Spare Tire – If Equipped .........493
▫ Full Size Spare – If Equipped .............494
▫ Limited-Use Spare – If Equipped ..........494
▫ Tire Spinning ....................... .495
▫ Tread Wear Indicators ..................496
▫ Life Of Tire ........................ .496
▫ Replacement Tires .....................497
 TIRE CHAINS (TRACTION DEVICES) .......499
 TIRE ROTATION RECOMMENDATIONS .....500
 TIRE PRESSURE MONITOR SYSTEM (TPMS) . .501
▫ Premium and Base TPM System ...........504
▫ Premium System – If Equipped ............508
▫ General Information ...................512 
FUEL REQUIREMENTS ..................513
▫ 3.6L Engine ......................... .513
▫ Reformulated Gasoline .................513
▫ Gasoline/Oxygenate Blends ..............514
▫ E-85 Usage In Non-Flex Fuel Vehicles .......514
▫ MMT In Gasoline .....................515
▫ Materials Added To Fuel ................515
▫ Fuel System Cautions ...................516
▫ Carbon Monoxide Warnings .............517
 ADDING FUEL ....................... .517
▫ Fuel Filler Cap (Gas Cap) ...............517
▫ Loose Fuel Filler Cap Message ............519
412 STARTING AND OPERATING

VEHICLE LOADING ....................519
▫ Certification Label ....................519
 TRAILER TOWING .....................522
▫ Common Towing Definitions .............522
▫ Trailer Hitch Classification ...............525
▫ Trailer Towing Weights (Maximum Trailer
Weight Ratings) ..................... .526
▫ Trailer And Tongue Weight ..............532▫
Towing Requirements ..................533
▫ Towing Tips ........................ .538
 RECREATIONAL TOWING
(BEHIND MOTORHOME, ETC.) ............540
▫ Towing This Vehicle Behind Another Vehicle . .540
▫ Recreational Towing – Four-Wheel Drive
Models ............................ .541
5
STARTING AND OPERATING 413

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.
414 STARTING AND OPERATING

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.
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. Turn the ignition switch to the START position and
release when the engine starts. If the engine fails to start
within 10 seconds, turn the ignition switch to the LOCK
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.
5
STARTING AND OPERATING 415

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.
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.
416 STARTING AND OPERATING

CAUTION!
To prevent damage to the starter, do not crank the
engine for more than 15 seconds at a time. Wait 10 to
15 seconds before trying again.
If the engine has been flooded, it may start to run, but not
have enough power to continue running when the key is
released. If this occurs, continue cranking with the accel-
erator pedal pushed all the way to the floor. Release the
accelerator pedal and the key once the engine is running
smoothly.
If the engine shows no sign of starting after two 15–second
periods of cranking with the accelerator pedal held to the
floor, repeat the “Normal Starting” or “Extreme Cold
Weather” procedures.
With Tip Start – Automatic 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. To clear any excess fuel, push
the accelerator pedal all the way to the floor and hold it.
Then, turn the ignition switch to the START position and
release it as soon as the starter engages. The starter motor
will disengage automatically in 10 seconds. Once this
occurs, release the accelerator pedal, turn the ignition
switch to the LOCK position, wait 10 to 15 seconds, then
repeat the “Normal Starting” procedure.
CAUTION!
To prevent damage to the starter, wait 10 to 15 sec-
onds before trying again.
5
STARTING AND OPERATING 417

After Starting
The idle speed is controlled automatically and it will
decrease as the engine warms up.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and permits
quicker starts in cold weather. Connect the cord to a
standard 110-115 Volt AC electrical outlet with a grounded,
three-wire extension cord.
The engine block heater must be plugged in at least one
hour to have an adequate warming effect on the engine.
The engine block heater cord is found under the hood
bundled in front of the battery tray.
WARNING!
Remember to disconnect the engine block heater
cord before driving. Damage to the 110-115 Volt AC
electrical cord could cause electrocution.
MANUAL TRANSMISSION — IF EQUIPPED
WARNING!
You or others could be injured if you leave the
vehicle unattended without having the parking
brake fully applied. The parking brake should al-
ways be applied when the driver is not in the vehicle,
especially on an incline.
CAUTION!
Never drive with your foot resting on the clutch
pedal, or attempt to hold the vehicle on a hill with the
clutch pedal partially engaged, as this will cause
abnormal wear on the clutch.
NOTE: During cold weather, you may experience in-
creased effort in shifting until the transmission fluid
warms up. This is normal.
418 STARTING AND OPERATING