2013 JEEP WRANGLER UNLIMITED heating

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.576 MAINTAINING YOUR VEHICLE

Emergency Brake ........................ .452
Emergency, In Case of
Jacking ............................. .540
Jump Starting ........................ .548
Tow Hooks .......................... .554
Emission Control System Maintenance ......... .563
Engine
Air Cleaner .......................... .569
Block Heater ......................... .413
Break-In Recommendations ................98
Compartment ........................ .561
Compartment Identification .............. .561
Cooling ............................. .577
Exhaust Gas Caution ................... .100
Fails to Start ..........................411
Flooded, Starting .......................411
Fuel Requirements ..................... .506
Jump Starting ........................ .548
Oil ................................ .566 Oil Change Interval .................... .325
Oil Selection ......................... .567
Oil Synthetic ......................... .568
Overheating ......................... .538
Starting ............................. .410
Temperature Gauge .................... .305
Engine Oil Viscosity ...................... .568
Engine Oil Viscosity Chart .................. .568
Enhanced Accident Response Feature ............70
Entry System, Illuminated ....................21
Ethanol ............................... .507
Event Data Recorder ........................75
Exhaust Gas Caution ...................... .100
Exhaust System .......................... .100
Extender, Seat Belt .........................61
Exterior Lights .......................... .103
Fabric Care ............................. .594
Fabric Top ............................. .595638 INDEX

Oil Pressure Light ........................ .301
Onboard Diagnostic System ................. .562
Operating Precautions ..................... .562
Operator Manual (Owner’s Manual) .............6
Outside Rearview Mirrors ...................112
Overdrive .............................. .427
Overdrive OFF Switch ..................... .427
Overheating, Engine ...................... .305
Owner’s Manual (Operator Manual) .............6
Paint Care ............................. .591
Panic Alarm ..............................24
Parking Brake ........................... .452
Passing Light ........................... .170
Personal Settings ......................... .331
Pets ....................................98
Pets, Transporting ..........................98
Phone, Cellular ...........................114
Phone, Hands-Free (Uconnect™) ...............114 Placard, Tire and Loading Information ......... .478
Power
Door Locks ............................38
Inverter ............................. .186
Mirrors ..............................113
Steering ............................ .450
Windows .............................41
Pregnant Women and Seat Belts ................61
Preparation for Jacking .................... .542
Pretensioners
Seat Belts .............................59
Programmable Electronic Features ............ .331
Radial Ply Tires ......................... .485
Radiator Cap (Coolant Pressure Cap) .......... .580
Radio Operation ......................... .391
Rear Axle (Differential) .................... .590
Rear Swing Gate ...........................44
Rear Window Defroster .................... .294
10 INDEX 645