coolant temperature JEEP COMPASS 2008 1.G Owners Manual
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Page 163 of 399
13. Engine Coolant Temperature Warning Light
This light warns of an overheated engine condi-
tion. If the engine is critically hot, a warning chime
will sound 10 times. After the chime turns off, the
engine will still be critically hot until the light goes out.
14. Brake System Warning Light
This light monitors various brake functions, in-
cluding brake fluid level and parking brake appli-
cation. If the brake light turns on, it may indicate that the
parking brake is applied, there is a low brake fluid level
or there is a problem with the anti-lock brake system.
The dual brake system provides a reserve braking capac-
ity in the event of a failure to a portion of the hydraulic
system. Failure of either half of the dual brake system is
indicated by the Brake Warning Light which will turn on
when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.NOTE:The light may flash momentarily during sharp
cornering maneuvers which change fluid level condi-
tions. The vehicle should have service performed, and
the brake fluid level checked.
If brake failure is indicated, immediate repair is neces-
sary.
WARNING!
Driving a vehicle with the brake light on is danger-
ous. Part of the brake system may have failed. It will
take longer to stop the vehicle. You could have an
accident. Have the vehicle checked immediately.
Vehicles equipped with Anti-Lock brakes (ABS), are also
equipped with Electronic Brake Force Distribution (EBD).
UNDERSTANDING YOUR INSTRUMENT PANEL 163
4
Page 329 of 399
when the underside or rear of the vehicle is damaged;
have a competent technician inspect the complete ex-
haust system and adjacent body areas for broken, dam-
aged, deteriorated, or mispositioned parts. Open seams
or loose connections could permit exhaust fumes to seep
into the passenger compartment. In addition, inspect the
exhaust system each time the vehicle is raised for an oil
change or lubrication. Replace as required.
WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide (CO) which is colorless and odorless.
Breathing it can make you unconscious and can
eventually poison you. To avoid breathing CO, refer
to Exhaust Gas in the Safety Tips section of this
manual.
Cooling System
WARNING!
²When working near the radiator cooling fan, dis-
connect the fan motor lead or turn the ignition
switch to the OFF position. The fan is temperature
controlled and can start at any time the ignition
switch is in the ON position.
²You 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, don't 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.
MAINTAINING YOUR VEHICLE 329
7
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CAUTION!
Mixing of coolants other than specified Hybrid Or-
ganic Additive Technology (HOAT) engine coolants,
may result in engine damage and may decrease
corrosion protection. If a non-HOAT coolant is intro-
duced into the cooling system in an emergency, it
should be replaced with the specified coolant as soon
as possible.
Do not use plain water alone or alcohol base engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant and
may plug the radiator.
This vehicle has not been designed for use with
Propylene Glycol based coolants. Use of Propylene
Glycol based coolants is not recommended.
Adding Coolant
Your vehicle has been built with an improved engine
coolant that allows extended maintenance intervals. This
coolant can be used up to 5 Years or 100,000 miles before
replacement. To prevent reducing this extended mainte-
nance period, it is important that you use the same
coolant throughout the life of your vehicle. Please review
these recommendations for using Hybrid Organic Addi-
tive Technology (HOAT) coolant.
When adding coolant, a minimum solution of 50% rec-
ommended Mopar Antifreeze/ Coolant 5 Year/100,000
Mile Formula HOAT (Hybrid Organic Additive Technol-
ogy), or equivalent, in water should be used. Use higher
concentrations (not to exceed 70%) if temperatures below
234ÉF (237ÉC ) are anticipated.
Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant solution.
MAINTAINING YOUR VEHICLE 331
7
Page 332 of 399
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 coolant types will decrease the life of the
engine coolant and will require more frequent coolant
changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
coolant, and to insure 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.
WARNING!
²The warning words ªDO NOT OPEN HOTº on
the cooling system pressure cap are a safety pre-
caution. Never add coolant 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 scald-
ing or injury, do not remove the pressure cap while
the system is hot or under pressure.
²Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
332 MAINTAINING YOUR VEHICLE
Page 333 of 399
Disposal of Used Engine Coolant
Used ethylene glycol based engine coolant is a regulated
substance requiring proper disposal. Check with your
local authorities to determine the disposal rules for your
community. To prevent ingestion by animals or children
do not store ethylene glycol based engine 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 immediately.
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 tempera-
ture, the level of the coolant in the bottle should be
between the ªADDº and ªFULLº lines, shown on the
bottle.
The radiator normally remains completely full, so there is
no need to remove the radiator cap unless checking forcoolant freeze point or replacing 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 coolant 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 (a
few kilometers) of operation, you may observe vapor
coming from the front of the engine compartment. This is
normally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot coolant to
enter the radiator.
MAINTAINING YOUR VEHICLE 333
7
Page 388 of 399
Gasoline (Fuel).......................275,360
Gasoline, Reformulated................... 276
Gauges
Coolant Temperature.................... 164
Fuel................................ 160
Odometer........................... 167
Tachometer.......................... 162
Gearshift.............................. 234
General Information.................18,103,274
General Maintenance..................... 317
Glass Cleaning.......................... 345
Gross Axle Weight Rating.................. 282
Gross Vehicle Weight Rating................ 281
Hands-Free Phone (UConnectŸ).............. 76
Hazard
Driving Through Flowing, Rising, or Shallow Standing
Water................................ 239
Hazard Warning Flasher................... 296Head Restraints......................... 106
Headlights............................ 351
Cleaning............................ 345
High Beam........................ 117,161
High Beam/Low Beam Select Switch........ 117
Passing............................. 118
Replacing............................ 351
Switch.............................. 114
Heated Seats........................... 107
Hitches
Trailer Towing........................ 284
HomeLinkt(Garage Door Opener) Transmitter . . . 134
Hood Release.......................... 112
Hoses................................ 335
Ignition............................... 12
Key ................................. 12
Ignition Key Removal..................... 12
Immobilizer (Sentry Key).................15,19
388 INDEX
Page 396 of 399
Tachometer............................ 162
Taillights.............................. 354
Temperature Gauge, Engine Coolant.......164,297
Tether Anchor, Child Restraint............... 61
Theft Alarm (Security Alarm)................ 18
Theft System (Security Alarm)............... 18
Tie Down Hooks, Cargo................... 151
Tilt Steering Column..................... 122
Tire and Loading Information Placard......... 252
Tire Identification Number (TIN)............. 251
Tire Markings.......................... 247
Tire Safety Information.................... 247
Tires ............................67,256,378
Aging (Life of Tires).................... 262
Air Pressure.......................... 256
Alignment........................... 264
Chains.............................. 265
Changing............................ 298
Compact Spare........................ 260Flat Changing........................ 302
General Information.................... 256
High Speed.......................... 259
Inflation Pressures..................... 257
Jacking............................. 298
Life of Tires.......................... 262
Load Capacity.....................252,253
Pressure Monitor System (TPMS)........... 266
Quality Grading....................... 378
Radial.............................. 259
Replacement......................... 263
Rotation............................. 265
Safety...........................247,256
Sizes............................... 249
Snow Tires........................... 275
Spare Tire........................... 299
Spinning............................ 261
Tread Wear Indicators................... 262
Tongue Weight/Trailer Weight.............. 286
396 INDEX