coolant temperature JEEP COMMANDER 2010 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 opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket 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 an authorized deal-
ership for service.
166 UNDERSTANDING YOUR INSTRUMENT PANEL

release it as soon as the starter engages. The starter motor
will disengage automatically in 10 seconds. Once this
occurs, release the accelerator pedal, turn the ignition
switch to the LOCK position, wait 10 to 15 seconds, then
repeat the “Normal Starting” procedure.
CAUTION!
To prevent damage to the starter, wait 10 to 15 sec-
onds before trying again.
After Starting
The idle speed is controlled automatically and it will
decrease as the engine warms up.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and permits
quicker starts in cold weather. Connect the heater cord to
a ground-fault interrupter protected 110-115 Volt ACelectrical outlet with a grounded, three-wire extension
cord.
Use the heater when temperatures below 0°F (-18°C) are
expected to last for several days.
The block heater must be plugged in at least one hour to
have an adequate warming effect on the coolant.
The engine block heater cord is located:
•3.7L 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.
5
STARTING AND OPERATING 245

Cooling System
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) 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 or coolant bottle 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 antifreeze/coolant. Check
the front of the A/C condenser for any accumulation ofbugs, leaves, etc. If dirty, clean by gently spraying water
from a garden hose vertically down the face of the
condenser.
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.
374 MAINTAINING YOUR VEHICLE

CAUTION! (Continued)
•This vehicle has not been designed for use with
Propylene Glycol-based engine coolant (anti-
freeze). Use of Propylene Glycol-based engine
coolant (antifreeze) is not recommended.
Adding Coolant
Your vehicle has been built with an improved engine
coolant (antifreeze) that allows extended maintenance
intervals. This engine coolant (antifreeze) can be used up
to 5 Years or 102,000 miles (170 000 km) before replace-
ment. To prevent reducing this extended maintenance
period, it is important that you use the same engine
coolant (antifreeze) throughout the life of your vehicle.
Please review these recommendations for using Hybrid
Organic Additive Technology (HOAT) engine coolant
(antifreeze).When adding engine coolant (antifreeze):
•The manufacturer recommends using MOPAR
Antifreeze/ Coolant 5–Year/100,000 Mile Formula
HOAT (Hybrid Organic Additive Technology) or
equivalent.
•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.
376 MAINTAINING YOUR VEHICLE

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 engine
coolant (antifreeze), and to ensure that engine coolant
(antifreeze) 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 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 disposal
7
MAINTAINING YOUR VEHICLE 377

rules for your community. To prevent ingestion by ani-
mals and 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.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the engine coolant (antifreeze) 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
engine coolant (antifreeze) freeze point or replacing en-
gine coolant (antifreeze). Advise your service attendantof this. As long as 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.
378 MAINTAINING YOUR VEHICLE

ABS (Anti-Lock Brake System).............. 269
Adding Fuel ........................... 318
Adjustable Pedals ........................ 117
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 366
Air Conditioner Maintenance ............... 368
Air Conditioning ........................ 226
Air Conditioning, Operating Tips ............ 235
Air Conditioning, Rear Zone ................ 233
Air Conditioning Refrigerant ............... 369
Air Conditioning System .................. 226
Air Filter .............................. 366
Air Pressure, Tires ....................... 295
Airbag .............................. 49,57
Airbag Deployment ....................... 58
Airbag Light ................... 50,56,61,75,163
Airbag Maintenance ....................... 60
Airbag, Side .......................... 55,57
Airbag, Window (Side Curtain) ...........51,55,57
Alarm, Panic ............................ 24 Alarm (Security Alarm)
.................19,163
Alterations/Modifications, Vehicle ............. 9
Antenna, Satellite Radio ................... 216
Antifreeze (Engine Coolant) ................ 407
Anti-Lock Brake System (ABS) ............269,272
Anti-Lock Warning Light .................. 163
Anti-Theft System ....................... 163
Appearance Care ........................ 387
Arming Theft System (Security Alarm) ......... 19
Assist, Hill Start ........................ 280
Auto Down Power Windows ................ 31
Automatic Dimming Mirror ................. 82
Automatic Door Locks ..................... 29
Automatic Headlights .................... 105
Automatic Temperature Control (ATC) ......... 226
Automatic Transmission ................248,383
Adding Fluid ......................... 385
Fluid and Filter Changes ................. 383
Fluid Level Check ................... 384,385
442 INDEX

Gasoline............................ 314
Gauge .............................. 169
Materials Added ....................... 316
Octane Rating ........................ 314
Requirements ......................... 407
Saver Mode .......................... 176
Tank Capacity ........................ 407
Fuel Optimizer ......................... 176
Fuel Saver ............................. 176
Fuel System Caution ................ 317,319,320
Fuses ................................ 392
Garage Door Opener (HomeLink) ........... 130
Gas Cap (Fuel Filler Cap) ............318,320,359
Gasoline (Fuel) ......................... 314
Conserving .......................... 176
Gasoline, Reformulated ................... 315
Gasoline/Oxygenate Blends ................ 315
Gauges Coolant Temperature ................... 166 Fuel
............................... 169
Speedometer ......................... 160
Tachometer .......................... 163
Gear Ranges ........................... 248
General Information .................. 19,25,313
Glass Cleaning .......................... 391
Gross Axle Weight Rating ...............321,324
Gross Vehicle Weight Rating .............321,323
GVWR ............................... 321
Hands-Free Phone (uconnect) ............... 85
Hazard Warning Flasher ................... 342
Head Restraints .......................... 89
Head Rests ............................. 89
Headlights ............................ 105
Bulb Replacement ...................... 401
Cleaning ............................ 391
On With Wipers ....................... 106
Replacing ........................... 401
Heated Mirrors .......................... 84
448 INDEX

Snow Plow............................ 336
Spare Tire .......................... 297,344
Specifications Fuel (Gasoline) ........................ 314
Oil ................................ 364
Speed Control (Cruise Control) .............. 119
Speedometer ........................... 160
Starting ............................. 26,243
Automatic Transmission ................. 243
Cold Weather ...................... 244,245
Engine Block Heater .................... 245
Engine Fails to Start .................... 244
Remote .............................. 26
Steering Power ........................... 265,266
Tilt Column .......................... 117
Wheel, Tilt ........................... 117
Steering Wheel Mounted Sound System
Controls .............................. 220 Storage
............................... 400
Storage, Vehicle ...................... 236,400
Storing Your Vehicle ...................... 400
Sun Roof .............................. 137
Sun Visor Extension ....................... 85
Supplemental Restraint System - Airbag ........ 49
Sway Control, Trailer ..................... 280
Synthetic Engine Oil ...................... 365
System, Remote Starting .................... 26
Tachometer ............................ 163
Telescoping Steering Column ............... 117
Temperature Control, Automatic (ATC) ........ 226
Temperature Gauge, Engine Coolant .......... 166
Tether Anchor, Child Restraint ............... 68
Theft System Arming ...................... 19
Theft System Disarming .................... 20
Tilt Steering Column ..................... 117
Time Delay, Headlight .................... 111
Tire and Loading Information Placard ......... 290
10
INDEX 457