2008 JEEP GRAND CHEROKEE Owners Manual

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IF YOU NEED CONSUMER ASSISTANCE 465
9

DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following describes the tire grading categories estab-
lished by the National highway Traffic Safety Adminis-
tration. The specific grade rating assigned by the tire's
manufacturer in each category is shown on the sidewall
of the tires on your car.
All Passenger Car Tires Must Conform to Federal Safety
Requirements in Addition to These Grades.
Treadwear
The treadwear grade is a comparative rating based on the
wear rate of the tire when tested under controlled con-
ditions on a specified government test course. For ex-
ample, a tire graded 150 would wear one and a half (1
1/2) times as well on the government course as a tire
graded 100. The relative performance of tires depends
upon the actual conditions of their use, however, andmay depart significantly from the norm due to variations
in driving habits, service practices and differences in road
characteristics and climate.
Traction Grades
The traction grades, from highest to lowest, are AA, A, B,
and C. Those grades represent the tire's ability to stop on
wet pavement as measured under controlled conditions
on specified government test surfaces of asphalt and
concrete. A tire marked C may have poor traction perfor-
mance.
WARNING!
The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not
include acceleration, cornering, hydroplaning, or
peak traction characteristics.
466 IF YOU NEED CONSUMER ASSISTANCE

Temperature Grades
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation of heat
and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure. The
grade C corresponds to a level of performance, which all
passenger car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades B and A repre-
sent higher levels of performance on the laboratory test
wheel than the minimum required by law.WARNING!
The temperature grade for this tire is established for
a tire that is properly inflated and not overloaded.
Excessive speed, under inflation, or excessive load-
ing, either separately or in combination, can cause
heat buildup and possible tire failure.
IF YOU NEED CONSUMER ASSISTANCE 467
9

INDEX
10

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

Fluid Type........................... 417
Special Additives...................... 417
Torque Converter...................... 291
Autostick............................. 287
Auxiliary Electrical Outlet (Power Outlet)...... 168
Auxiliary Power Outlet................... 168
Battery............................... 401
Emergency Starting..................... 378
Keyless Transmitter Replacement (RKE)....... 25
Saving Feature (Protection)............... 124
Belts, Drive............................ 398
Belts, Seat.............................. 37
Body Mechanism Lubrication............... 405
B-Pillar Location........................ 314
Brake Assist System...................... 140
Brake Control System, Electronic............. 138
Brake Fluid............................ 414
Brake System........................... 413Anti-Lock (ABS)....................138,305
Fluid Check.......................... 414
Hoses.............................. 413
Master Cylinder....................... 414
Parking............................. 304
Warning Light........................ 188
Brake/Transmission Interlock............... 285
Break-In Recommendations, New Vehicle........ 68
Bulb Replacement.....................434,435
Calibration, Compass..................... 205
Camera, Rear........................... 156
Capacities, Fluid........................ 440
Caps, Filler
Fuel................................ 346
Radiator (Coolant Pressure)............... 409
Car Washes............................ 422
Carbon Monoxide Warning...............69,340
Cargo Area Cover....................... 173
INDEX 471
10

Cargo Area Features...................... 172
Cargo Compartment...................... 172
Light............................... 172
Luggage Carrier....................... 179
Cargo Light............................ 172
Cargo Load Floor........................ 176
Cargo Tie-Downs........................ 174
Catalytic Converter...................... 399
CD (Compact Disc) Player................. 241
Cellular Phone.......................... 81
Center High Mounted Stop Light............ 439
Certification Label....................... 348
Chains, Tire............................ 325
Changing A Flat Tire..................... 372
Chart, Tire Sizing........................ 311
Checks, Safety.........................69,70
Child Restraint....................58,59,63,65
Child Restraint Tether Anchors.............62,63
Child Safety Locks........................ 30Climate Control......................... 258
Clock........................215,230,242,244
Cold Weather Operation................... 276
Compact Disc (CD) Maintenance............. 257
Compass.............................. 204
Compass Calibration..................... 205
Compass Variance....................... 205
Computer, Trip/Travel.................... 201
Connector
UCI ................................ 246
Universal Consumer Interface (UCI)......... 246
Console, Overhead....................... 157
Contract, Service........................ 462
Converter, Catalytic...................... 399
Cooling System......................... 407
Adding Coolant (Antifreeze).............. 409
Coolant Capacity...................... 440
Coolant Level......................... 410
Disposal of Used Coolant................ 410
472 INDEX