2007 JEEP GRAND CHEROKEE radiator cap

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, fol-
low the preceding safety tips.
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.
Coolant Checks
Check engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where
318 MAINTAINING YOUR VEHICLE

applicable). If coolant 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 for any
accumulation of bugs, leaves, etc. If dirty, clean by gently
spraying water from a garden hose vertically down the
face of the condenser.
Check the coolant recovery bottle tubing for brittle rub-
ber, cracking, tears, cuts and tightness of the connection
at the 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 engine coolant (antifreeze) will begin to
drain from the coolant recovery bottle. DO NOT RE-
MOVE THE COOLANT PRESSURE CAP WHEN THE
COOLING SYSTEM IS HOT.Cooling System Ð Drain, Flush and Refill
At the intervals shown on the appropriate ªMaintenance
Schedule,º the system should be drained, flushed and
refilled.
If the solution 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 old
antifreeze solution.
Selection Of Coolant
Use only the manufacturer's recommended coolant, refer
to Fluids, Lubricants and Genuine Parts for correct
coolant type.
MAINTAINING YOUR VEHICLE 319
7

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
scalding 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
engine damage may result.
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
MAINTAINING YOUR VEHICLE 321
7

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 off and cold, the level of the coolant 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 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.
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.
²Do not overfill the coolant recovery bottle.
²Check coolant freeze point in the radiator and in the
coolant recovery bottle. If antifreeze needs to be
added, contents of coolant recovery bottle must also be
protected against freezing.
322 MAINTAINING YOUR VEHICLE

Battery............................... 312
Emergency Starting..................... 293
Keyless Transmitter Replacement (RKE)....... 23
Saving Feature (Protection)............... 114
Bearings.............................. 329
Belts, Drive............................ 309
Belts, Seat.............................. 35
Body Mechanism Lubrication............... 316
B-Pillar Location........................ 254
Brake Assist System...................... 132
Brake Control System, Electronic............. 131
Brake System........................... 324
Anti-Lock (ABS)....................131,245
Fluid Check.......................... 325
Hoses.............................. 324
Parking............................. 244
Warning Light........................ 172
Brake/Transmission Interlock............... 238
Break-In Recommendations, New Vehicle........ 64Bulb Replacement.....................340,341
Camera, Rear........................... 143
Capacities, Fluid........................ 346
Caps, Filler
Fuel................................ 274
Radiator (Coolant Pressure)............... 321
Car Washes............................ 330
Carbon Monoxide Warning............65,146,273
Cargo Area Cover....................... 159
Cargo Area Features...................... 158
Cargo Compartment...................... 158
Light............................... 158
Cargo Light............................ 158
Cargo Load Floor........................ 163
Cargo Tie-Downs........................ 161
Catalytic Converter...................... 310
Caution, Exhaust Gas..................... 146
CD (Compact Disc) Player................. 195
INDEX 379
10

Cellular Phone.......................... 78
Center High Mounted Stop Light............ 345
Chart, Tire Sizing........................ 251
Checks, Safety.........................66,67
Child Restraint......................54,60,62
Child Restraint Tether Anchors.............58,60
Child Safety Locks........................ 28
Clean Air Gasoline....................... 271
Climate Control......................... 222
Clock.............................197,210
Compact Disc (CD) Maintenance............. 221
Compass.............................. 186
Compass Variance....................... 193
Computer, Trip/Travel.................... 186
Console, Overhead....................... 144
Contract, Service........................ 372
Coolant Pressure Cap (Radiator Cap).......... 321
Cooling System......................... 318
Adding Coolant (Antifreeze).............. 320Coolant Capacity...................... 346
Coolant Level......................318,322
Disposal of Used Coolant................ 321
Drain, Flush, and Refill.................. 319
Inspection........................... 322
Points to Remember.................... 322
Pressure Cap......................... 321
Radiator Cap......................... 321
Selection of Coolant (Antifreeze).........319,346
Cruise Control (Speed Control).............. 128
Cruise Light........................... 177
Cup Holder............................ 157
Customer Assistance..................... 370
Data Recorder, Event...................... 52
Daytime Running Lights................... 117
Dealer Service.......................... 304
Defroster, Rear Window................... 165
Defroster, Windshield...................66,226
380 INDEX

Opener, Garage Door (HomeLinkt) ........... 145
Outside Rearview Mirrors.................. 75
Overhead Console....................... 144
Overheating, Engine...................176,293
Owner's Manual (Operator Manual).......... 374
Paint Care............................. 329
Paint Damage.......................... 329
Panic Alarm............................ 22
Park Assist System, Rear.................. 137
Parking Brake.......................... 244
Passing Light........................... 119
Pedals, Adjustable....................... 126
Pets.................................. 64
Pets, Transporting........................ 64
Phone, Cellular.......................... 78
Phone, Hands-Free (UConnectŸ)............. 78
Placard, Tire and Loading Information......... 254
Polishing and Waxing..................... 330Power
Distribution Center (Fuses)............... 336
Door Locks........................... 26
Mirrors.............................. 76
Outlet (Auxiliary Electrical Outlet).......... 155
Seats............................102,103
Steering..........................248,314
Sunroof............................. 152
Windows............................. 29
Pregnant Women and Seat Belts.............. 42
Pretensioners
Seat Belts............................. 41
Programmable Electronic Features......147,151,181
Programming Transmitters
(Remote Keyless Entry).................147,151
Radial Ply Tires......................... 262
Radiator Cap (Coolant Pressure Cap).......... 321
Radio Broadcast Signals................... 194
388 INDEX