2006 JEEP LIBERTY engine overheat

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, put transmission in N
(Neutral), but do not increase engine idle speed.
NOTE: There are steps that you can take to slow down
an impending overheat condition. If your air conditioner
is on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
Control to maximum heat, the Mode Control to floor, and
the Fan Control to High. This allows the heater core to act
as a supplement to the radiator and aids in removing heat
from the engine cooling system. If the pointer rises to the “H” (hot mark) on a vehicle
equipped with a
gasoline engine, pull over and stop the
vehicle. Do not turn the engine off. Idle the vehicle with
the air conditioning turned off, until the pointer drops
back into the normal range.CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads “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
the “H”, and you hear continuous chimes, turn the
engine off immediately, and call for service.
WHAT TO DO IN EMERGENCIES 301
6

If the coolant temperature of a vehicle equipped with a
diesel engine approaches the “H” (hot mark) a warning
chime will sound to alert the driver. The air conditioning
system will turn off automatically and power loss will
occur until the engine temperature returns to the normal
range.
If the overheating condition persists a continuous chime
will sound to alert the driver. Reduce the vehicle speed
and or stop the vehicle while allowing the engine to idle
and cool the engine.JACKING AND TIRE CHANGING
WARNING!
•Getting under a jacked-up vehicle is dangerous.
The vehicle could slip off the jack and fall on you.
You could be crushed. Never get any part of your
body under a vehicle that is on a jack. If you need
to get under a raised vehicle, take it to a service
center where it can be raised on a lift.
•The jack is designed to use as a tool for changing
tires only. The jack should not be used to lift the
vehicle for service purposes. The vehicle should
be jacked on a firm level surface only. Avoid ice or
slippery areas.
302 WHAT TO DO IN EMERGENCIES

Spark Plugs
Spark plugs must fire properly to assure engine perfor-
mance and emission control. New plugs should be in-
stalled at the mileage specified in the appropriate main-
tenance chart. The entire set should be replaced if there is
any malfunction due to a faulty spark plug.
Refer to the “Vehicle Emission Control Information” label
in the engine compartment for spark plug information.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
converter as an emission control device.
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.
CAUTION!
Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
324 MAINTAINING YOUR VEHICLE

WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming into contact with your ex-
haust system. Do not park or operate your vehicle in
areas where your exhaust system can contact any-
thing that can burn.
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.
•Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating condi-
tions.
•Do not allow vehicle to run out of fuel.
NOTE: Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
MAINTAINING YOUR VEHICLE 325
7

The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precaution.
Never add antifreeze/coolant when the engine is
overheated. Do not loosen or remove the cap to cool
an overheated engine. Heat causes pressure to build
up in the cooling system. To prevent scalding or
injury, do not remove the pressure cap while the
system is hot or under pressure.
Disposal of Used Engine Coolant
Used Hybrid Organic Additive Technology (HOAT)
antifreeze/coolant is a regulated substance requiring
proper disposal. Check with your local authorities to
determine the disposal rules for your community. To prevent ingestion by animals or children, do not store
HOAT antifreeze/coolant in open containers, or allow it
to remain in puddles on the ground. If ingested by a
child, contact a physician immediately. Clean up ground
spills immediately.
Engine Coolant Level
The coolant recovery bottle provides a quick visual
method for determining that the antifreeze/coolant level
is adequate. With the engine idling, and warm to normal
operating temperature, the level of the antifreeze/coolant
should be between the ranges indicated on the bottle.
The radiator normally remains completely full, so there is
no need to remove the radiator cap unless checking for
antifreeze/coolant freeze point or replacing coolant. Ad-
vise your service attendant of this. As long as the engine
operating temperature is satisfactory, the coolant bottle
need only be checked once a month.
MAINTAINING YOUR VEHICLE 335
7

Electronic Stability Program (ESP)............ 129
Electronic Throttle Control Warning Light ...... 180
Electronic Vehicle Information Center (EVIC) .... 137
Emergency, In Case of Freeing Vehicle When Stuck ............... 233
Hazard Warning Flasher ................. 300
Jacking ............................. 302
Jump Starting ......................... 307
Tow Hooks .......................... 309
Emission Control System Maintenance ......317,366
Engine Air Cleaner .......................... 326
Block Heater ......................... 223
Break-In Recommendations ................ 71
Checking Oil Level ..................... 319
Compartment ......................... 314
Compartment Identification ............... 314
Cooling ............................. 332
Exhaust Gas Caution .................... 279 Fails to Start
.......................... 218
Flooded, Starting ...................... 218
Fuel Requirements .................. 276,362
Jump Starting ......................... 307
Malfunction Indicator (Check Engine) ........ 174
Oil .............................. 319,362
Oil Change Interval .................... 320
Oil Disposal .......................... 323
Oil Filter ............................ 323
Oil Filter Disposal ...................... 323
Oil Selection .................... 321,322,362
Oil Synthetic ......................... 322
Overheating .......................... 301
Starting ............................. 217
Temperature Gauge ..................... 176
Engine Oil Viscosity ................... 321,322
Engine Oil Viscosity Chart ..............321,322
Enhanced Accident Response Feature .......... 60
Entry System, Illuminated .................. 17
406 INDEX

Capacity............................ 362
Change Interval ....................... 320
Checking ............................ 319
Dipstick ............................. 319
Identification Logo ..................... 321
Materials Added to ..................... 322
Pressure Warning Light .................. 177
Recommendation ................. 321,322,362
Synthetic ............................ 322
Viscosity ....................... 321,322,362
Oil Filter, Selection ....................... 323
Oil Pressure Light ....................... 177
Onboard Diagnostic System ..............316,317
Opener, Garage Door (HomeLink ) ........... 145
Organizer, Cargo ........................ 160
Outside Rearview Mirrors .................. 80
Overhead Console ....................... 135
Overheating, Engine ...................... 301
Owner’s Manual (Operator Manual) .......... 398 Paint Care
............................. 345
Paint Damage .......................... 345
Panic Alarm ............................ 25
Parking Brake .......................... 243
Passing Light ........................... 117
PCV Valve ............................ 326
Pets .................................. 71
Phone, Cellular .......................... 83
Phone, Hands-Free (UConnect™) ............. 83
Placard, Tire and Loading Information ......... 258
Polishing and Waxing ..................... 346
Power Distribution Center ..................... 351
Door Locks ........................... 20
Mirrors .............................. 81
Outlet (Auxiliary Electrical Outlet) .......... 153
Seats ............................... 109
Steering .......................... 247,328
Sunroof ............................. 151
INDEX 413
10