2010 JEEP LIBERTY check engine

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 ignition coil connec-
tors disconnected for prolonged periods.
•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.
Cooling System
WARNING!
•You or others can be badly burned by hot coolant
or steam from your radiator. If you see or hear
steam coming from under the hood, do not open
the hood until the radiator has had time to cool.
Never try to open a cooling system pressure cap
when the radiator is hot.
Engine Coolant Checks
Check the engine coolant (antifreeze) protection every
12 months (before the onset of freezing weather, where
applicable). If the engine coolant (antifreeze) is dirty or
rusty in appearance, the system should be drained,
flushed, and refilled with fresh coolant. Check the front
of the A/C condenser (if equipped) or radiator for any
accumulation of bugs, leaves, etc. If dirty, clean by gently
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MAINTAINING YOUR VEHICLE 435

spraying water from a garden hose vertically down the
face of the A/C condenser (if equipped) or the back of the
radiator core.
Check the engine cooling system hoses for brittle rubber,
cracking, tears, cuts, and tightness of the connection at
the coolant recovery bottle and radiator. Inspect the
entire system for leaks.
With the engine at normal operating temperature (but
not running), check the cooling system pressure cap for
proper vacuum sealing by draining a small amount of
engine coolant (antifreeze) from the radiator drain cock.
If the cap is sealing properly, the engine coolant (anti-
freeze) will begin to drain from the coolant recovery
bottle. DO NOT REMOVE THE COOLANT PRESSURE
CAP WHEN THE COOLING SYSTEM IS HOT.Cooling System — Drain, Flush, and Refill
If the engine coolant (antifreeze) is dirty or contains a
considerable amount of sediment, clean and flush with a
reliable cooling system cleaner. Follow with a thorough
rinsing to remove all deposits and chemicals. Properly
dispose of the old engine coolant (antifreeze).
Refer to the “Maintenance Schedule” in Section 8 for the
proper maintenance intervals.
Selection of Engine Coolant
Use only the manufacturer’s recommended engine cool-
ant (antifreeze). Refer to “Fluids, Lubricants, and Genu-
ine Parts” in this section for the correct fluid type.
436 MAINTAINING YOUR VEHICLE

WARNING!
•The warning words “DO NOT OPEN HOT” on
the cooling system pressure cap are a safety pre-
caution. Never add engine coolant (antifreeze)
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.
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
Disposal of Used Engine Coolant
Used ethylene glycol based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposalrules for your community. To prevent ingestion by ani-
mals or children, do not store ethylene glycol based
engine coolant (antifreeze) in open containers or allow it
to remain in puddles on the ground. If ingested by a child
or pet, seek emergency assistance immediately. Clean up
any ground spills immediately.
Engine Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. With the
engine idling, and warm to normal operating temperature,
the level of the engine coolant (antifreeze) in the bottle
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
coolant freeze point or replacing engine coolant (anti-
freeze). Advise your service attendant of this. As long as
the engine operating temperature is satisfactory, the
coolant bottle need only be checked once a month.7
MAINTAINING YOUR VEHICLE 439

When additional engine coolant (antifreeze) is needed to
maintain the proper level, it should be added to the
coolant bottle. Do not overfill.
Points to Remember
NOTE:When the vehicle is stopped after a few miles/
kilometers of operation, you may observe vapor coming
from the front of the engine compartment. This is nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot engine
coolant (antifreeze) to enter the radiator.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
•Do not overfill the coolant bottle.
•Check coolant freeze point in the radiator and in the
coolant recovery bottle. If engine coolant (antifreeze)
needs to be added, contents of coolant recovery bottle
must also be protected against freezing.
•If frequent engine coolant (antifreeze) additions are
required, or if the level in the coolant recovery bottle
does not drop when the engine cools, the cooling
system should be pressure tested for leaks.
•Maintain engine coolant (antifreeze) concentration at
50% HOAT engine coolant (antifreeze) (minimum)
and distilled water for proper corrosion protection of
your engine, which contains aluminum components.
•Make sure that the radiator and coolant recovery
bottle hoses are not kinked or obstructed.
•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
440 MAINTAINING YOUR VEHICLE

NOTE:
•The oil change indicator message will not monitor the
time since the last oil change. Change your vehicles oil
if it has been six months since your last oil change even
if the oil change indicator message is NOT illumi-
nated.
•Change your engine oil more often if you drive your
vehicle off-road for an extended period of time.
•Under no circumstances should oil change intervals
exceed 6,000 miles (10 000 km) or six months, which-
ever comes first.
Your dealer will reset the oil change indicator message
after completing the scheduled oil change. If this sched-
uled oil change is performed by someone other than your
dealer the message can be reset by referring to the steps
described under “Oil Change Required” in “Use Factory Settings” of the EVIC section in this manual or under
“Odometer/Trip Odometer” in the “Instrument Cluster
Descriptions section of this manual.
At Each Stop for Fuel
•Check the engine oil level about five minutes after a
fully warmed engine is shut off. Checking the oil level
while the vehicle is on level ground will improve the
accuracy of the oil level reading. Add oil only when
the level is at or below the ADD or MIN mark.
•Check the windshield washer solvent and add if
required.
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SMAINTENANCE SCHEDULES 471

Once a Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of the coolant reservoir and
brake master cylinder, and add as needed.
•Check all lights and other electrical items for correct
operation.
At Each Oil Change
•Change the engine oil filter.
•Inspect the brake hoses and lines.
CAUTION!
•Failure to perform the required maintenance items
may result in damage to the vehicle.
•Proper operation of four-wheel drive vehicles de-
pends on tires of equal size, type and circumfer-
ence on each wheel. Any difference in tire size can
cause damage to the transfer case. Tire rotation
schedule should be followed to balance tire wear.
Required Maintenance Intervals
Refer to the Maintenance Schedules on the following
pages for the required maintenance intervals.
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S472 MAINTENANCE SCHEDULES

Brake/Transmission Interlock............... 303
Break-In Recommendations, New Vehicle ........ 85
Bulb Replacement ....................... 461
Bulbs, Light .......................... 88,461
Calibration, Compass ..................... 229
Capacities, Fluid ........................ 465
Caps, Filler Fuel ............................... 378
Oil (Engine) .......................... 426
Power Steering ........................ 327
Radiator (Coolant Pressure) ............... 438
Car Washes ............................ 449
Carbon Monoxide Warning ...............86,377
Cargo Area Cover ....................... 197
Cargo Area Features ...................... 193
Cargo Compartment ...................... 193
Light ............................... 154
Cargo Light ............................ 154 Cargo Load Floor
........................ 193
Cargo Tie-Downs ........................ 195
Cargo (Vehicle Loading) ................... 380
Cellular Phone .......................... 98
Certification Label ....................... 380
Changing A Flat Tire ..................... 405
Chart, Tire Sizing ........................ 345
Check Engine Light
(Malfunction Indicator Light) .............210,421
Checking Your Vehicle For Safety ............. 85
Checks, Safety ........................... 85
Child Restraint .................... 75,76,80,83
Child Restraint Tether Anchors .............79,80
Child Safety Locks ........................ 32
Clean Air Gasoline ....................... 373
Cleaning Windshield Wiper Blades ................ 431
Climate Control ......................... 281
Clock ........................ 237,251,254,263
502 INDEX

Checking Oil Level..................... 424
Compartment ......................... 419
Coolant (Antifreeze) ................. 435,466
Cooling ............................. 435
Exhaust Gas Caution .................. 86,377
Fails to Start .......................... 300
Flooded, Starting ...................... 300
Fuel Requirements ..................... 373
Jump Starting ......................... 412
Oil ........................... 424,465,466
Oil Change Interval ...............220,226,425
Oil Filler Cap ......................... 426
Oil Filter ............................ 427
Oil Filter Disposal ..................... 426
Oil Selection ....................... 425,465
Oil Synthetic ......................... 426
Overheating .......................... 404
Starting ............................. 299
Temperature Gauge .................... 215 Engine Oil Viscosity
...................... 426
Engine Oil Viscosity Chart ................. 426
Enhanced Accident Response Feature .......... 72
Entry System, Illuminated .................. 19
Ethanol ............................... 374
Exhaust Gas Caution ................86,377,433
Exhaust System ....................... 86,433
Exterior Finish Care ...................... 449
Exterior Lights .......................... 88
Fabric Care ............................ 451
Filters Air Cleaner .......................... 427
Air Conditioning .................... 293,430
Engine Oil ........................ 427,466
Engine Oil Disposal .................... 426
Finish Care ............................ 449
Flashers Hazard Warning ....................... 404
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INDEX 505