2010 JEEP WRANGLER overheating

Operating Tips
Window Fogging
Windows will fog on the inside when the humidity inside
the vehicle is high. This often occurs in mild or cool
temperatures when it’s rainy or humid. In most cases
turning on the air-conditioning (pressing the snowflake
button) will clear the fog. Adjust the temperature control,
air direction and blower speed to maintain comfort.
As the temperature gets colder it may be necessary to
direct air onto the windshield. Adjust the temperature
control and blower speed to maintain comfort. Higher
blower speeds will reduce fogging. Interior fogging on
the windshield can be quickly removed by selecting the
defrost mode.Regular cleaning of the inside of the windows with a
non-filming cleaning solution (vinegar and water works
very well) will help prevent contaminates (cigarette
smoke, perfumes, etc.) from sticking to the windows.
Contaminates increase the rate of window fogging.
Summer Operation
Air conditioned vehicles must be protected with a high
quality antifreeze coolant during summer to provide
proper corrosion protection and to raise the boiling point
of the coolant for protection against overheating. A 50 %
concentration is recommended. Refer to Fluids and
Genuine Parts in “Maintaining Your Vehicle” for the
proper coolant type.
324 UNDERSTANDING YOUR INSTRUMENT PANEL

HAZARD WARNING FLASHER
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 flasher.
This is an emergency warning system and should not be
used when the vehicle is in motion. Use it when your
vehicle is disabled and is creating a safety hazard for
other motorists.
If it is necessary to leave the vehicle to go for service, the
Hazard Warning flasher will continue to operate with the
ignition key removed and the vehicle locked.
NOTE: With extended use, the Hazard Warning flasher
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.
440 WHAT TO DO IN EMERGENCIES

CAUTION!
•The catalytic converter requires the use of un-
leaded fuel only. Leaded gasoline will destroy the
effectiveness of the catalyst as an emissions con-
trol device and may seriously reduce engine per-
formance and cause serious damage to the engine.
•Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition.
In the event of engine malfunction, particularly
involving engine misfire or other apparent loss of
performance, have your vehicle serviced promptly.
Continued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.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.
7
MAINTAINING YOUR VEHICLE 469

Flooded, Starting...................... 332
Fuel Requirements .................. 41 1,501
Jump Starting ......................... 446
Oil .............................. 460,501
Oil Disposal .......................... 462
Oil Filter ............................ 462
Oil Selection .......................... 501
Overheating .......................... 440
Starting ............................. 331
Temperature Gauge .................... 251
Engine Oil Viscosity ...................... 462
Engine Oil Viscosity Chart ................. 462
Enhanced Accident Response Feature .......... 58
Entry System, Illuminated .................. 19
Event Data Recorder ...................... 60
Exhaust Gas Caution ................... 76,415
Exhaust System ....................... 76,468
Extender, Seat Belt ........................ 49
Exterior Finish Care ...................... 483 Exterior Lights
.......................... 79
Fabric Care ......................... 485,487
Fabric Top ............................. 487
Filters Air Cleaner .......................... 463
Engine Oil ........................... 462
Finish Care ............................ 483
Flashers Hazard Warning ....................... 440
Turn Signal ................... 79,247,499,500
Flooded Engine Starting ................... 332
Fluid Capacities ......................... 501
Fluid Leaks ............................. 79
Fluid Level Checks ...................... 482
Automatic Transmission ................. 478
Engine Oil ........................... 460
Manual Transmission ................... 481
Power Steering ........................ 368
540 INDEX

Oil Pressure Light....................... 247
Onboard Diagnostic System ..............456,457
Operator Manual (Owner’s Manual) ............ 6
Outside Rearview Mirrors .................. 87
Overheating, Engine ................... 251,440
Owner’s Manual (Operator Manual) .........6,531
Paint Care ............................. 482
Paint Damage .......................... 482
Panic Alarm ............................ 21
Parking Brake .......................... 369
Passing Light ........................... 138
Pets .................................. 74
Phone, Cellular .......................... 88
Phone, Hands-Free (Uconnect™) .............. 88
Placard, Tire and Loading Information ......... 394
Polishing and Waxing ..................... 483
Power Door Locks ........................... 31 Steering
.......................... 367,368
Windows ............................. 34
Pregnant Women and Seat Belts .............. 49
Preparation for Jacking .................... 443
Pretensioners Seat Belts ............................ 47
Radial Ply Tires ......................... 401
Radio Operation ........................ 317
Radio, Satellite (Uconnect studios)........... 311
Rear Axle (Differential) .................... 482
Rear Swing Gate ......................... 36
Rear Window Defroster ................... 239
Rear Window Features .................... 238
Rear Wiper/Washer ...................... 238
Rearview Mirrors ........................ 86
Recorder, Event Data ...................... 60
Recreational Towing ...................... 435
Shifting into Transfer Case Neutral (N) ....... 436
546 INDEX