2009 JEEP LIBERTY coolant temperature

If the light turns on while driving, safely pull over and
stop the vehicle. If the A/C system is on, turn it off. Also,
shift the transmission into NEUTRAL and idle the ve-
hicle. If the temperature reading does not return to
normal, turn the engine off immediately and call for
service. Refer to “If Your Engine Overheats” in Section 6
for more information.
23. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.
The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If 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 an authorized deal-
ership for service.
UNDERSTANDING YOUR INSTRUMENT PANEL 209
4

WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer-
ship for service if your vehicle overheats. If you
decide to look under the hood yourself, see Section 7
of this manual. Follow the warnings under the Cool-
ing System Pressure Cap paragraph.
24. Transmission Temperature Indicator — If Equipped This light indicates that the transmission fluid
temperature is running hot. This may occur
with severe usage, such as trailer towing. If this
light turns on, safely pull over and stop the
vehicle. Then, shift the transmission into NEUTRAL and
run the engine at idle or faster until the light turns off. 25. Trip Odometer Button
Changing the Display
Press and release this button once to change the display
from odometer to “Trip A.” Press and release it again to
change the display from “Trip A” to “Trip B.” On vehicles
equipped with a Base Cluster, press and release it once
again to display the outside temperature. On vehicles
equipped with a Mid Line Cluster, press and release it
once again to display the outside temperature and com-
pass heading in the screen below the speedometer. Refer
to “Vacuum Fluorescent Display” for details.
Resetting the Trip Odometer
Display the trip mileage that you want to reset, “Trip A”
or “Trip B.” Then push and hold the button (approxi-
mately two seconds) until the display resets to 0. The
odometer must be in Trip Mode to reset the trip odom-
eter.
210 UNDERSTANDING YOUR INSTRUMENT PANEL

Overdrive Operation
The overdrive automatic transmission contains an elec-
tronically controlled 4th speed (OVERDRIVE). The trans-
mission will automatically shift from 3rd gear to OVER-
DRIVE if the following conditions are present:
•the shift lever is in DRIVE
•the engine coolant has reached normal operating tem-
perature
•vehicle speed is above approximately 30 mph
(48 km/h)
•the TOW/HAUL button has not been activated
•the transmission has reached normal operating
temperature
NOTE:
•If the vehicle is started in extremely cold temperatures,
the transmission may not shift into OVERDRIVE and will automatically select the most desirable gear for
operation at this temperature. Normal operation will
resume when the transmission fluid temperature has
risen to a suitable level. Refer to the “Note” under
“Torque Converter Clutch” in this section.
•If the transmission temperature gets extremely hot, the
transmission will automatically select the most desir-
able gear for operation at this temperature. If the
transmission temperature becomes hot enough, the
“Transmission Temperature Warning Light” may illu-
minate and the transmission may downshift out of
OVERDRIVE until the transmission cools down. After
the transmission cools down, the transmission will
resume normal operation.
The transmission will downshift from OVERDRIVE to
DRIVE if the accelerator pedal is fully pressed at vehicle
speeds above approximately 35 mph (56 km/h).
STARTING AND OPERATING 299
5

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.
424 MAINTAINING YOUR VEHICLE

When adding engine coolant (antifreeze):
•The manufacturer recommends using MOPAR
Antifreeze/Coolant 5 Year/100,000 Mile Formula
HOAT (Hybrid Organic Additive Technology).
•Mix a minimum solution of 50% HOAT engine coolant
(antifreeze) and distilled water. Use higher concentra-
tions (not to exceed 70%) if temperatures below 34°F
(37°C) are anticipated.
•Use only high purity water such as distilled or deion-
ized water when mixing the water/engine coolant
(antifreeze) solution. 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 engine coolant (antifreeze) types will
decrease the life of the engine coolant (antifreeze) and
will require more frequent engine coolant (antifreeze)
changes.Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
coolant, and to ensure that 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.
426 MAINTAINING YOUR VEHICLE

the engine operating temperature is satisfactory, the
coolant bottle need only be checked once a month.
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.
428 MAINTAINING YOUR VEHICLE

Engine............................... 409
Air Cleaner .......................... 416
Block Heater ......................... 293
Break-In Recommendations ................ 80
Checking Oil Level ..................... 413
Compartment ......................... 409
Coolant (Antifreeze) ................. 423,451
Cooling ............................. 423
Exhaust Gas Caution .................. 81,369
Fails to Start .......................... 292
Flooded, Starting ...................... 292
Fuel Requirements ..................... 365
Jump Starting ......................... 402
Oil ........................... 413,450,451
Oil Change Interval ...............212,218,414
Oil Filler Cap ......................... 415
Oil Filter ............................ 415
Oil Filter Disposal ..................... 415
Oil Selection ....................... 414,450Oil Synthetic
......................... 415
Overheating .......................... 394
Starting ............................. 291
Temperature Gauge .................... 209
Engine Oil Viscosity ...................... 415
Engine Oil Viscosity Chart ................. 415
Enhanced Accident Response Feature .......... 66
Entry System, Illuminated .................. 19
Ethanol ............................... 366
Exhaust Gas Caution ................81,369,421
Exhaust System ....................... 81,421
Exterior Finish Care ...................... 435
Exterior Lights .......................... 83
Fabric Care ............................ 438
Filler Location Fuel ...................... 370
Filters Air Cleaner .......................... 416
Air Conditioning .................... 284,419
INDEX 485
10

Materials Added....................... 368
Methanol ............................ 366
Octane Rating ...................... 365,451
Requirements ......................... 365
Specifications ......................... 451
Tank Capacity ........................ 450
Fuel System Caution ..................... 370
Fueling ............................... 370
Fuses ................................ 440
Garage Door Opener (HomeLink) ........... 165
Gas Cap (Fuel Filler Cap) ...............370,410
Gas Gauge (Fuel Gauge) ................... 202
Gasoline, Clean Air ...................... 366
Gasoline (Fuel) ......................... 365
Gasoline, Reformulated ................... 366
Gauges Coolant Temperature ................... 209
Fuel ............................... 202 Odometer
........................... 211
Speedometer ......................... 205
Tachometer .......................... 207
Gear Ranges ........................... 297
General Information ...............17,26,122,365
General Maintenance ..................... 413
Glass Cleaning .......................... 439
Gross Axle Weight Rating ...............372,375
Gross Vehicle Weight Rating .............372,374
GVWR ............................... 372
Hands-Free Phone (uconnect) ............... 94
Hazard Driving Through Flowing, Rising, or Shallow
Standing Water ........................ 314
Hazard Warning Flasher ................... 394
Head Restraints ......................... 131
Head Rests ............................ 131
Headlights .......................... 142,143
INDEX 487
10