coolant temperature JEEP COMMANDER 2007 1.G Owners Manual

CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system op-
eration or sensor damage may result when using
replacement equipment that is not of the same size,
type, and/or style. After-market wheels can cause
sensor damage. Do not use tire sealant from a can, or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
13. 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 for service.
180 UNDERSTANDING YOUR INSTRUMENT PANEL

ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms engine coolant and
permits quicker starts in cold weather. Connect the cord
to a standard 110-115 volt AC electrical outlet with
grounded, three wire extension cord.
Use the heater when temperatures below 0°F (-18°C) are
expected to last for several days.
The engine block heater cord is located:
•3.7L/4.7L Engine — coiled and strapped to the engine
oil dipstick tube.
•5.7L Engine — bundled and fastened to the injector
harness.
WARNING!
Remember to disconnect the cord before driving.
Damage to the 110-115 volt AC electrical cord could
cause electrocution.
AUTOMATIC TRANSMISSION
CAUTION!
Damage to the transmission may occur if the follow-
ing precautions are not observed:
•Shift into P (Park) only after the vehicle has come
to a complete stop.
•Shift into or out of R (Reverse) only after the
vehicle has come to a complete stop and the
engine is at idle speed.
•Do not shift from R (Reverse), P (Park), or N
(Neutral) into any forward gear when the engine
is above idle speed.
•Before shifting into any gear, make sure your foot
is firmly on the brake pedal.
STARTING AND OPERATING 255
5

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
coolant from the radiator drain cock. If the cap is sealing
properly, the antifreeze/coolant 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
At the intervals shown in the appropriate “Maintenance
Schedule,” the system should be drained, flushed, and
refilled.
If the solution is dirty and contains a considerable
amount of sediment, clean and flush with reliable cooling
system cleaner. Follow with a thorough rinsing to remove
all deposits and chemicals. Properly dispose of old
antifreeze/coolant solution.
Selection Of Coolant
Use only the manufacturer’s recommended antifreeze/
coolant, refer to Fluids, Lubricants, and Genuine Parts for
correct antifreeze/coolant type.
376 MAINTAINING YOUR VEHICLE

CAUTION!
Mixing of antifreeze/coolant other than the specified
HOAT antifreeze/coolant may result in decreased
corrosion protection and engine damage. If a non-
HOAT antifreeze/coolant is introduced into the cool-
ing system in an emergency, it should be replaced
with the specified antifreeze/coolant as soon as pos-
sible.
Do not use plain water alone or alcohol base
antifreeze/coolant products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the antifreeze/coolant and may
plug the radiator.
This vehicle has not been designed for use with
Propylene Glycol based antifreeze/coolant. Use of
Propylene Glycol base antifreeze/coolant is not rec-
ommended.
Adding Coolant
Your vehicle has been built with an improved antifreeze/
coolant that allows extended maintenance intervals. This
antifreeze/coolant can be used up to 5 Years or 100,000
miles before replacement. To prevent reducing this ex-
tended maintenance period, it is important that you use
the same antifreeze/coolant throughout the life of your
vehicle. Please review these recommendations for using
Hybrid Organic Additive Technology (HOAT)
antifreeze/coolant.
When adding antifreeze/coolant, a minimum solution of
50% recommended MoparAntifreeze/ Coolant 5 Year/
100,000 Mile Formula HOAT (Hybrid Organic Additive
Technology), or equivalent, in water should be used. Use
higher concentrations (not to exceed 70%) if temperatures
below -34°F (-37°C) are anticipated.
MAINTAINING YOUR VEHICLE 377
7

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 tank.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.
378 MAINTAINING YOUR VEHICLE

Disposal of Used Engine Coolant
Used ethylene glycol-based antifreeze/coolant is a regu-
lated substance requiring proper disposal. Check with
your local authorities to determine the disposal rules for
your community. To prevent ingestion by animals and
children, do not store ethylene glycol-based 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 any ground spills im-
mediately.
Coolant Level
The coolant 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 in the
bottle should be between the ranges indicated on the
bottle.The radiator normally remains completely full, so there is
not need to remove the radiator cap unless checking for
antifreeze/coolant freeze point or replacing antifreeze/
coolant. 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.
When additional antifreeze/coolant is needed to main-
tain 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 antifreeze/
coolant to enter the radiator.
MAINTAINING YOUR VEHICLE 379
7

Schedule “B”
Follow this schedule if you usually operate your vehicle
under one or more of the following conditions.
•Day or night temperatures are below 32°F (0°C)
•Stop and go driving
•Excessive engine idling
•Driving in dusty conditions
•Short trips of less than 10 miles (16.2 km)
•More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C)
•Trailer towing
•Heavy loading
•Taxi, police, or delivery service (commercial service)
•Off-road or desert driving
•If equipped for and operated with E-85 (ethanol)
fuel.
NOTE:IfANYof these apply to you, change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first, and follow the maintenance rec-
ommendations in “Maintenance Schedule B.”
NOTE:IfANYof these apply to you then flush and
replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first, and follow
“Schedule B” of the “Maintenance Schedules” section of
this manual.
SCHEDULE “B” 409
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M
A
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N
A
N
C
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S
C
H
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D
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S

ABS (Anti-Lock Brake System)............177,275
Adding Fuel........................... 314
Adding Washer Fluid..................... 167
Adjustable Pedals....................... 130
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 366
Air Conditioner Maintenance............... 371
Air Conditioning........................ 235
Air Conditioning, Operating Tips............ 244
Air Conditioning, Rear Zone................ 242
Air Conditioning Refrigerant............... 372
Air Conditioning System.................. 235
Air Filter.............................. 366
Air Pressure, Tires....................... 289
Airbag................................ 46
Airbag Deployment....................... 53
Airbag Light.......................55,69,177
Airbag Maintenance....................... 54
Alarm (Security Alarm).................18,178
Alarm System (Security Alarm)............... 18Alignment and Balance................... 294
Alterations/Modifications, Vehicle............. 9
Antenna, Satellite Radio................... 230
Antifreeze (Engine Coolant)................ 402
Disposal............................ 379
Anti-Lock Brake System (ABS)............135,275
Anti-Lock Warning Light.................. 177
Anti-Theft System.....................18,178
Appearance Care........................ 388
Auto Down Power Windows................ 30
Automatic Dimming Mirror................. 77
Automatic Door Locks..................... 27
Automatic Headlights.................... 120
Automatic Temperature Control (ATC)......... 236
Automatic Transmission................256,385
Adding Fluid......................... 386
Fluid and Filter Changes................. 385
Fluid Level Check...................... 385
Fluid Type........................... 385
438 INDEX

System Hoses......................... 381
Tank Capacity........................ 402
Fuel, Flexible.............See Flexible Fuel Vehicles
Fuel System Caution................310,315,316
Fuses................................ 393
Garage Door Opener (HomeLink) ........... 151
Gas Cap (Fuel Filler Cap)............314,316,359
Gasoline (Fuel)......................... 307
Gasoline, Reformulated................... 308
Gasoline/Oxygenate Blends................ 308
Gauges
Coolant Temperature.................... 180
Fuel................................ 182
Speedometer......................... 176
Tachometer.......................... 178
Gear Ranges........................... 257
General Information....................23,306
Glass Cleaning.......................... 392Gross Axle Weight Rating.................. 320
Gross Vehicle Weight Rating................ 319
GVWR............................... 317
Hands-Free Phone (UConnect™).............. 80
Hazard Warning Flasher................... 340
Head Restraints......................... 106
Head Rests............................ 106
Headlights............................ 120
Cleaning............................ 391
On With Wipers....................... 121
Heated Mirrors.......................... 79
Heated Seats........................... 106
Heater, Engine Block..................... 255
High Beam Indicator..................... 176
High Beam/Low Beam Select (Dimmer) Switch . . 124
Hitches
Trailer Towing........................ 323
Holder, Cup........................... 163
444 INDEX

Steering Wheel Mounted Sound System
Controls.............................. 230
Storage............................... 400
Storage, Vehicle......................245,400
Storing Your Vehicle...................... 400
Sun Roof.............................. 158
Sun Visor Extension....................... 80
Supplemental Restraint System - Airbag........ 46
Synthetic Engine Oil...................... 364
System, Navigation...................... 220
System, Remote Starting.................... 25
Tachometer............................ 178
Temperature Control, Automatic (ATC)........ 236
Temperature Gauge, Engine Coolant.......... 180
Tether Anchor, Child Restraint............... 61
Tilt Steering Column..................... 130
Time Delay, Headlight.................... 124
Tire and Loading Information Placard......... 284Tire Identification Number (TIN)............. 283
Tire Markings.......................... 280
Tire Safety Information.................... 280
Tires ............................70,288,435
Air Pressure.......................... 289
Alignment and Balance.................. 294
Chains.............................. 295
Changing............................ 342
General Information.................... 288
High Speed.......................... 291
Inflation Pressures..................... 289
Jacking............................. 342
Life of Tires.......................... 293
Load Capacity.....................284,285
Pressure Monitor System (TPMS)........... 297
Pressure Warning Light.................. 179
Quality Grading....................... 435
Radial.............................. 291
Replacement......................... 293
INDEX 453
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