2008 JEEP WRANGLER flat tire

inflation pressure of each tire on your vehicle, and inflate
each tire to the vehicle’s recommended cold placard
pressure value. The system will automatically update
and the Tire Pressure Monitoring Telltale Light will
extinguish once the updated tire pressures have been
received. The vehicle may need to be driven for up to 10
minutes above 15 mph (25 km/h) to receive this infor-
mation.
The Tire Pressure Monitoring Telltale Light will flash on
and off for 75 seconds, and will remain on solid when a
system fault is detected. The system fault will also sound
a chime. If the ignition key is cycled, this sequence will
repeat, providing the system fault still exists. A system
fault can occur by any of the following scenarios:
1. Jamming due to electronic devices or driving next to
facilities emitting the same Radio Frequencies as the TPM
sensors.
2. Installing some form of aftermarket window tinting
that affects radio wave signals.3. Lots of snow or ice around the wheels or wheel
housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM sensors.
NOTE:
If your vehicle is equipped with a matching
full-size spare wheel and tire assembly, it has a tire
pressure monitoring sensor, and can be monitored by the
Tire Pressure Monitoring System (TPMS). In the event
that the matching full-size spare tire is swapped with a
low pressure road tire, the next ignition key cycle will
still show the Tire Pressure Monitoring Telltale Light to
be ON, and a chime to sound. Driving the vehicle for up
to 10 minutes above 15 mph (25 km/h) will turn OFF the
Tire Pressure Monitoring Telltale Light as long as none of
the road tires are below the low pressure warning thresh-
old.
334 STARTING AND OPERATING

Each axle’s GAWR is determined by the components in
the system with the lowest load carrying capacity (axle,
springs, tires, or wheels). Heavier axles or suspension
components, sometimes specified by purchasers for in-
creased durability, does not necessarily increase the ve-
hicle’s GVWR.
Tire Size
The tire size on the label represents the actual tire size on
your vehicle. Replacement tires must be equal to the load
capacity of this tire size.
Rim Size
This is the rim size that is appropriate for the tire size
listed.
Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and
rear of your vehicle at the ground can best be determined
by weighing it when it is loaded and ready for operation.
The entire vehicle should first be weighed on a commer-
cial scale to ensure that the GVWR has not been ex-
ceeded. The weight on the front and rear of the vehicle
should then be determined separately to be sure that the
load is properly distributed over front and rear axle.
Weighing the vehicle may show that the GAWR of either
STARTING AND OPERATING 343
5

2. GTW
3. GAWR
4. Tongue weight rating for the trailer hitch utilized
(This requirement may limit the ability to always
achieve the 10% to 15% range of tongue weight as a
percentage of total trailer weight).
Towing Requirements — Tires

Do not attempt to tow a trailer while using a compact
spare tire.
Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle. Refer to the
“Tires–General Information” section of this manual for
proper tire inflation procedures.
Also, check the trailer tires for proper tire inflation
pressures before trailer usage.
Check for signs of tire wear or visible tire damage
before towing a trailer. Refer to the “Tires–General
Information” section of this manual for the proper
inspection procedure.
When replacing tires, refer to the “Tires–General Infor-
mation” section for proper tire replacement proce-
dures. Replacing tires with a higher load carrying
capacity will not increase the vehicle’s GVWR and
GAWR limits.
Towing Requirements — Trailer Brakes

Donot interconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible
personal injury.
STARTING AND OPERATING 355
5

Jacking InstructionsWARNING!
Carefully follow these tire changing warnings to help
prevent personal injury or damage to your vehicle:
•Always park on a firm, level surface as far from the edge
of the roadway as possible before raising the vehicle.
• Block the wheel diagonally opposite the wheel to be
raised.
• Set the parking brake firmly, and shift a automatic
transmission into PARK; or a manual transmission into
REVERSE.
• Never start or run the engine with the vehicle on a jack.
• Do not let anyone sit in the vehicle when it is on a jack.
• Do not get under the vehicle when it is on a jack.
• Only use the jack in the positions indicated and for
lifting this vehicle during a tire change.
• If working on or near a roadway, be extremely careful of
motor traffic.
• To assure that spare tires, flat or inflated are securely
stowed, spares must be stowed with the valve stem
facing the ground.
• Turn on the hazard warning flasher.
Jack Warning Label
368 WHAT TO DO IN EMERGENCIES

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.
444 IF YOU NEED CONSUMER ASSISTANCE

Axle Lock.......................... 290,291
Battery ............................... 389
Emergency Starting ..................... 371
Keyless Transmitter Replacement (RKE) ....... 24
Belts, Drive ............................ 386
Belts, Seat .............................. 41
Body Mechanism Lubrication ............... 392
Brake Assist System ...................... 107
Brake Assist Warning Light ................. 214
Brake Control System, Electronic ............. 105
Brake System ........................... 399
Anti-Lock (ABS) .................... 105,309
Hoses .............................. 400
Master Cylinder ....................... 400
Parking ............................. 308
Warning Light ........................ 207
Brake/Transmission Interlock ............... 281
Break-In Recommendations, New Vehicle ........ 75Bulb Replacement
....................... 420
Capacities, Fluid ........................ 424
Caps, Filler Fuel ................................ 340
Power Steering ........................ 391
Car Washes ............................ 407
Carbon Monoxide Warning ................. 339
Cargo Light ............................ 95
Cargo (Vehicle Loading) ................... 342
Catalytic Converter ...................... 386
Caution, Exhaust Gas ...................... 75
CD (Compact Disc) Player ................. 250
CD (Compact Disc) Player Maintenance ........ 258
Cellular Phone .................. 85,250,251,258
Center High Mounted Stop Light ............ 423
Certification Label ....................... 342
Chains, Tire ............................ 329
Changing A Flat Tire ..................... 366
INDEX 447
10

Key ................................. 12
Ignition Key Removal ..................... 12
Illuminated Entry ........................ 19
Immobilizer (Sentry Key) ................... 14
Infant Restraint .......................... 63
Inflation Pressure Tires .................... 322
Inside Rearview Mirror .................... 83
Instrument Cluster ....................... 205
Instrument Panel and Controls .............. 204
Instrument Panel Lens Cleaning ............. 410
Integrated Power Module (Fuses) ............ 413
Interior Appearance Care .................. 409
Interior Lights ........................... 95
Intermittent Wipers (Delay Wipers) ........... 100
Introduction ............................. 4
Jack Location ........................... 366
Jack Operation .................... 366,368,369
Jacking Instructions ...................... 368 Jump Starting
.......................... 371
Key, Programming ........................ 16
Key, Replacement ........................ 16
Key, Sentry (Immobilizer) ................... 14
Key-In Reminder ......................... 14
Keyless Entry System ...................... 19
Keys ................................. 12
Lane Change and Turn Signals .............. 207
Lap Belts .............................. 41
Lap/Shoulder Belts ....................... 41
LATCH
(Lower Anchors and Tether for CHildren) .....68,69
Lead Free Gasoline ...................... 336
Lights ................................. 95
Airbag ............................ 60,208
Anti-Lock ........................... 208
Anti-Lock Warning ..................... 208
INDEX 453
10

Storage, Vehicle...................... 266,419
Storing Your Vehicle ...................... 419
Sunrider ........................... 161,164
Supplemental Restraint System - Airbag ........ 51
Sway Bar Disconnect, Electronic ............. 292
Swing Gate, Rear ......................... 38
System, Navigation ...................... 250
System, Remote Starting .................... 25
Tachometer ............................ 209
Temperature Gauge, Engine Coolant .......... 209
Tether Anchor, Child Restraint ............... 68
Theft System Arming ...................... 18
Theft System Disarming .................... 18
Tilt Steering Column ..................... 101
Tip Start .............................. 272
Tire and Loading Information Placard ......317,318
Tire Identification Number (TIN) ............. 316
Tire Markings .......................... 313 Tire Safety Information
.................... 313
Tires .............................. 321,442
Air Pressure .......................... 322
Alignment and Balance .................. 328
Chains .............................. 329
Changing ............................ 366
General Information .................... 321
High Speed .......................... 324
Inflation Pressures ..................... 322
Jacking ........................... 366,369
Load Capacity ..................... 317,318
Pressure Monitor System (TPMS) ........... 330
Pressure Warning Light .................. 210
Quality Grading ....................... 442
Radial .............................. 325
Replacement ......................... 327
Rotation ............................. 329
Safety .............................. 313
Sizes ............................... 314
460 INDEX