2008 JEEP GRAND CHEROKEE coolant temperature

The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
²The 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.
²Do 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 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.
410 MAINTAINING YOUR VEHICLE

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.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 antifreeze/coolant freeze point in the radiator
and in the coolant recovery bottle. If antifreeze/
coolant needs to be added, contents of coolant recov-
ery bottle must also be protected against freezing.
²If frequent antifreeze/coolant 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.
²Maintain antifreeze/coolant concentration at 50%
HOAT antifreeze/coolant (minimum) and distilled
water for proper corrosion protection of your engine
which contains aluminum components.
MAINTAINING YOUR VEHICLE 411
7

ABS (Anti-Lock Brake System)............189,305
Adding Fuel........................... 345
Adding Washer Fluid..................... 178
Adjustable Pedals....................... 134
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 398
Air Conditioner Maintenance............... 402
Air Conditioning........................ 260
Air Conditioning, Operating Tips............ 268
Air Conditioning Refrigerant............... 403
Air Conditioning System.................. 260
Air Filter.............................. 398
Air Pressure, Tires....................... 319
Airbag................................ 46
Airbag Deployment....................... 53
Airbag Light.......................55,70,189
Airbag Maintenance....................... 55
Alarm, Panic............................ 24
Alarm (Security Alarm).................20,190
Alarm System (Security Alarm)............... 20Alignment and Balance................... 324
Alterations/Modifications, Vehicle............. 9
Antenna, Satellite Radio................... 251
Antifreeze (Engine Coolant)................ 440
Anti-Lock Brake System (ABS)............138,305
Anti-Lock Warning Light.................. 189
Anti-Theft System.....................20,190
Appearance Care........................ 421
Assist, Hill Start........................ 147
Audio Systems (Radio).................... 241
Auto Down Power Windows................ 32
Automatic Dimming Mirror................. 78
Automatic Door Locks..................... 29
Automatic Headlights.................... 124
Automatic Temperature Control (ATC)......... 261
Automatic Transmission................285,417
Adding Fluid......................... 419
Fluid and Filter Changes................. 417
Fluid Level Check...................418,419
470 INDEX

Fluids, Lubricants and Genuine Parts.......... 441
Fog Light Service........................ 437
Fog Lights.......................127,195,437
Folding Rear Seat........................ 115
Four Wheel Drive....................... 293
Operation........................... 293
Systems............................. 293
Four Wheel Drive Operation................ 293
Four-Way Hazard Flasher.................. 370
Freeing A Stuck Vehicle................... 292
Front Axle (Differential)................... 415
Front Heated Seats....................... 111
Fuel................................. 336
Diesel.............................. 344
Filler Cap (Gas Cap).................... 346
Gasoline............................ 336
Gauge.............................. 195
Hoses.............................. 412
Materials Added....................... 339Octane Rating......................336,337
Requirements......................... 440
System Hoses......................... 412
Tank Capacity........................ 440
Fuel, Flexible.............See Flexible Fuel Vehicles
Fuel System Caution................339,346,348
Fuses................................ 426
Garage Door Opener (HomeLinkt) ........... 158
Gas Cap (Fuel Filler Cap)............346,348,391
Gasoline (Fuel)......................... 336
Gasoline, Reformulated................... 337
Gasoline/Oxygenate Blends................ 338
Gauges
Coolant Temperature.................... 192
Fuel................................ 195
Speedometer......................... 188
Tachometer.......................... 190
Gear Ranges........................... 286
476 INDEX

Oil ................................ 395
Speed Control (Cruise Control).............. 135
Speedometer........................... 188
Starting............................... 275
Automatic Transmission................. 275
Cold Weather......................276,283
Engine Block Heater.................... 283
Engine Fails to Start.................... 277
Remote.............................. 26
Steering
Power...........................308,403
Tilt Column.......................... 133
Wheel, Tilt........................... 133
Steering Wheel Mounted Sound System
Controls.............................. 256
Storage............................... 433
Storage, Behind the Seat................... 172
Storage Bin............................ 172
Storage Compartment, Center Seat............ 117Storage, Vehicle......................269,433
Storing Your Vehicle...................... 433
Sun Roof.............................. 165
Sun Visor Extension....................... 81
Sunglasses Storage....................... 158
Supplemental Restraint System - Airbag........ 46
Sway Control, Trailer..................... 146
Synthetic Engine Oil...................... 397
System, Navigation...................... 244
System, Remote Starting.................... 26
Tachometer............................ 190
Telescoping Steering Column............... 133
Temperature Control, Automatic (ATC)........ 261
Temperature Gauge, Engine Coolant.......... 192
Tether Anchor, Child Restraint............... 62
Tie Down Hooks, Cargo................... 174
Tilt Steering Column..................... 133
Time Delay, Headlight.................... 128
486 INDEX