heating JEEP WRANGLER 2012 JK / 3.G User Guide

WARNING!
Overloading of your tires is dangerous. Overloading
can cause tire failure, affect vehicle handling, and
increase your stopping distance. Use tires of the
recommended load capacity for your vehicle. Never
overload them.
TIRES — GENERAL INFORMATION
Tire Pressure
Proper tire inflation pressure is essential to the safe and
satisfactory operation of your vehicle. Three primary
areas are affected by improper tire pressure:
Safety
WARNING!
•Under-inflation increases tire flexing and can re-
sult in over-heating and tire failure.
•Over-inflation reduces a tire’s ability to cushion
shock. Objects on the road and chuck holes can
cause damage that results in tire failure.
•Over-inflated or under-inflated tires can affect
vehicle handling and can fail suddenly, resulting
in loss of vehicle control.
•Unequal tire pressures can cause steering prob-
lems. You could lose control of your vehicle.
•Unequal tire pressures from one side of the ve-
hicle to the other can cause the vehicle to drift to
the right or left.
5
STARTING AND OPERATING 443

Electronic Speed Control – If Equipped

Do not use in hilly terrain or with heavy loads.
When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
Cooling System
To reduce potential for engine and transmission over-
heating, take the following actions:
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
484 STARTING AND OPERATING

HAZARD WARNING FLASHERS
The Hazard Warning flasher switch is located on the
instrument panel below the climate controls.Press the switch to turn on the Hazard Warning
flasher. When the switch is activated, all directional
turn signals will flash on and off to warn oncoming
traffic of an emergency. Press the switch a second time to
turn off the Hazard Warning flashers.
This is an emergency warning system and it should not
be used when the vehicle is in motion. Use it when your
vehicle is disabled and it is creating a safety hazard for
other motorists.
When you must leave the vehicle to seek assistance, the
Hazard Warning flashers will continue to operate even
though the ignition is placed in the OFF position.
NOTE: With extended use the Hazard Warning flashers
may wear down your battery.
IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
•On the highways — slow down.
•In city traffic — while stopped, shift transmission into
NEUTRAL, but do not increase engine idle speed.
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads HOT
(H), pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains on HOT (H), and you hear continuous
chimes, turn the engine off immediately, and call for
service.
492 WHAT TO DO IN EMERGENCIES

FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand or snow, it
can often be moved by a rocking motion. Turn your
steering wheel right and left to clear the area around the
front wheels. Then shift back and forth between DRIVE
and REVERSE (with automatic transmission) or 1st gear
and REVERSE (with manual transmission). Using mini-
mal accelerator pedal pressure to maintain the rocking
motion, without spinning the wheels, is most effective.
CAUTION!
Racing the engine or spinning the wheels may lead to
transmission overheating and failure. Allow the en-
gine to idle with the shift lever in NEUTRAL for at
least one minute after every five rocking-motion
cycles. This will minimize overheating and reduce
the risk of transmission failure during prolonged
efforts to free a stuck vehicle.NOTE:
If your vehicle is equipped with Traction Con-
trol or Electronic Stability Control (ESC), turn the system
OFF before attempting to “rock” the vehicle.
CAUTION!
•When “rocking” a stuck vehicle by moving be-
tween DRIVE and REVERSE (with automatic
transmission) or 1st gear and REVERSE (with
manual transmission), do not spin the wheels
faster than 15 mph (24 km/h), or drivetrain damage
may result.
•Revving the engine or spinning the wheels too fast
may lead to transmission overheating and failure.
It can also damage the tires. Do not spin the
wheels above 30 mph (48 km/h) while in gear (no
transmission shifting occurring).6
WHAT TO DO IN EMERGENCIES 505

Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
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 specifica-
tions, should be obtained immediately. To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
7
MAINTAINING YOUR VEHICLE 529

Emergency, In Case ofJacking ............................ 493
Jump Starting ....................... 501
Tow Hooks ......................... 506
Emission Control System Maintenance ......... 515
Engine Air Cleaner ......................... 520
Block Heater ........................ 375
Break-In Recommendations .............. 84
Compartment ....................... 513
Compartment Identification ............. 513
Exhaust Gas Caution ................86,464
Fails to Start ........................ 373
Flooded, Starting ..................... 373
Fuel Requirements ................. 460,559
Jump Starting ....................... 501
Oil ............................ 518,559
Oil Change Interval ................... 292
Oil Disposal ........................ 520 Oil Filter
........................... 520
Oil Selection ........................ 559
Overheating ........................ 492
Starting ........................... 372
Temperature Gauge ................... 274
Engine Oil Viscosity ...................... 519
Engine Oil Viscosity Chart ................. 519
Enhanced Accident Response Feature .......... 66
Entry System, Illuminated .................. 20
Ethanol ............................... 461
Event Data Recorder ...................... 70
Exhaust Gas Caution ................... 86,464
Exhaust System ....................... 86,527
Extender, Seat Belt ........................ 58
Exterior Finish Care ...................... 542
Exterior Lights .......................... 89
Fabric Care ......................... 544,546
Fabric Top ............................. 546
596 INDEX

Outside Rearview Mirrors.................. 97
Overdrive ............................. 390
Overdrive OFF Switch .................... 390
Overheating, Engine ................... 274,492
Owner’s Manual (Operator Manual) .........6,587
Paint Care ............................. 541
Paint Damage .......................... 541
Panic Alarm ............................ 23
Parking Brake .......................... 414
Passing Light ........................... 152
Personal Settings ........................ 298
Pets .................................. 84
Phone, Cellular .......................... 99
Phone, Hands-Free (Uconnect™) .............. 99
Placard, Tire and Loading Information ......... 439
Polishing and Waxing ..................... 542 Power
Door Locks ......................... 36
Inverter ........................... 166
Mirrors ............................ 98
Steering ........................ 412,413
Windows ........................... 39
Pregnant Women and Seat Belts .............. 57
Preparation for Jacking .................... 495
Pretensioners Seat Belts ........................... 56
Programmable Electronic Features ............ 298
Radial Ply Tires ......................... 446
Radio Operation ........................ 354
Rear Axle (Differential) .................... 541
Rear Swing Gate ......................... 42
Rear Window Defroster ................... 261
Rear Window Features .................... 260
Rear Wiper/Washer ...................... 260
10
INDEX 603