2007 JEEP LIBERTY engine overheat

Use only high purity water such as distilled or deionized
water when mixing the water/antifreeze (coolant) solu-
tion. The use of lower quality water will reduce the
amount of corrosion protection in the engine cooling
system.
Please note that it is the owner’s responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE:Mixing antifreeze/coolant types will decrease
the life of the antifreeze/coolant and will require more
frequent antifreeze/coolant changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
antifreeze/coolant, and to insure that antifreeze/coolant
will return to the radiator from the coolant recovery
bottle.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 precau-
tion. Never add antifreeze/coolant when the en-
gine 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.
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or
engine damage may result.
336 MAINTAINING YOUR VEHICLE

Electronic Vehicle Information Center (EVIC).... 135
Emergency Brake........................ 240
Emergency, In Case of
Hazard Warning Flasher................. 302
Jacking............................. 304
Jump Starting......................... 308
Tow Hooks........................... 311
Emission Control System Maintenance......318,370
Engine
Air Cleaner.......................... 324
Block Heater......................... 215
Break-In Recommendations................ 74
Checking Oil Level..................... 320
Compartment......................... 316
Compartment Identification............... 316
Cooling ............................. 333
Exhaust Gas Caution.................... 276
Fails to Start.......................... 213
Flooded, Starting...................... 213Fuel Requirements..................273,366
Malfunction Indicator (Check Engine)........ 168
Oil ..............................320,366
Oil Change Interval.................... 321
Oil Disposal.......................... 323
OilFilter ............................ 323
Oil Filter Disposal...................... 323
Oil Selection.......................322,366
Oil Synthetic......................... 322
Overheating.......................... 303
Starting............................. 211
Temperature Gauge..................... 169
Engine Oil Viscosity...................... 322
Engine Oil Viscosity Chart................. 322
Enhanced Accident Response Feature.......... 62
Entry System, Illuminated.................. 21
Exhaust Gas Caution................... 74,276
Exhaust System......................... 333
ExteriorFinishCare ...................... 348
404 INDEX

Pressure Warning Light.................. 170
Recommendation...................322,366
Synthetic............................ 322
Viscosity..........................322,366
Oil Filter, Selection....................... 323
Oil Pressure Light....................... 170
Onboard Diagnostic System..............317,318
Opener, Garage Door (HomeLink) ........... 143
Outside Rearview Mirrors.................. 82
Overhead Console....................... 133
Overheating, Engine...................... 303
Owner’s Manual (Operator Manual).......... 396
PaintCare ............................. 347
Paint Damage.......................... 347
Panic Alarm............................ 24
Parking Brake.......................... 240
Passing Light........................... 119
PCVValve ............................ 327Pets.................................. 73
Phone, Cellular.......................... 85
Phone, Hands-Free (UConnect™)............. 85
Placard, Tire and Loading Information......... 250
PolishingandWaxing ..................... 348
Power
Distribution Center (Fuses)............... 356
Door Locks........................... 29
Mirrors .............................. 83
Outlet (Auxiliary Electrical Outlet).......... 150
Steering..........................243,330
Sunroof............................. 148
Windows........................... 31,32
Pregnant Women and Seat Belts.............. 48
Preparation for Jacking.................... 305
Pretensioners
Seat Belts............................. 46
Programmable Electronic Features............ 136
INDEX 411
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