2009 JEEP WRANGLER fuel cap

Gross Axle Weight Rating (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
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.
364 STARTING AND OPERATING

MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment – 3.8L .............. 401
 Onboard Diagnostic System — OBD II ...... 402
▫ Loose Fuel Filler Cap Message ........... 402
 Emissions Inspection And Maintenance
Programs ............................ 403
 Replacement Parts ..................... 404
 Dealer Service ........................ 405
 Maintenance Procedures ................. 405
▫ Engine Oil ......................... 406 ▫
Engine Oil Filter ..................... 408
▫ Engine Air Cleaner Filter ............... 409
▫ Maintenance-Free Battery .............. 409
▫ Air Conditioner Maintenance ............ 410
▫ Body Lubrication .................... 411
▫ Windshield Wiper Blades ............... 412
▫ Adding Washer Fluid ................. 412
▫ Exhaust System ..................... 413
▫ Cooling System ..................... 416
7

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light (MIL).” It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and drivability. The
vehicle must be serviced before any emissions
tests can be performed.
•If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose, improp-
erly installed, or damaged. A “gASCAP” message will be
displayed in the odometer. Tighten the gas cap until a
clickingsound is heard. This is an indication that the
gas cap is properly tightened. Press the odometer reset
button to turn the message off. If the problem persists,
402 MAINTAINING YOUR VEHICLE

Engine Oil Viscosity (SAE Grade)
SAE 5W-20 engine oil is recommended for all operating
temperatures. This engine oil improves low temperature
starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in this section.
Lubricants which do not have both, the engine oil certi-
fication mark and the correct SAE viscosity grade num-
ber, should not be used.
Synthetic Engine Oils
Synthetic engine oils can be used if the recommended oil
quality requirements are met, and the recommended
maintenance intervals for oil and filter changes are
followed.
Materials Added to Engine Oils
The manufacturer strongly recommends against the ad-
dition of any additives (other than leak detection dyes) to
engine oil. Engine oil is an engineered product and its
performance may be impaired by supplemental
additives.
Disposing of Used Engine Oil and Oil Filters
Care should be taken in disposing of used engine oil and
oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to the
environment. Contact your authorized dealer, service
station, or governmental agency for advice on how and
where used oil and oil filters can be safely discarded in
your area.
Engine Oil Filter
The engine oil filter should be replaced at every engine
oil change.
408 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES
U.S.Metric
Fuel (Approximate) — Two Door Models 18.5 Gallons 70 Liters
Fuel (Approximate) — Four Door Models 22.5 Gallons 85 Liters
Engine Oil with Filter
3.8 Liter Engine 6 Quarts 5.7 Liters
Cooling System *
3.8 Liter Engine (MOPAR Antifreeze/Engine Coolant 5
Year/100,000 Mile Formula or equivalent) 13 Quarts
12 Liters
* Includes coolant recovery bottle filled to MAX level.
7
MAINTAINING YOUR VEHICLE 447

FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant MOPARAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid
Organic Additive Technology) or equivalent.
Engine Oil Use API Certified SAE 5W-20 Engine Oil, meeting the requirements of
Chrysler Material Standard MS-6395. Refer to your engine oil filler cap for
correct SAE grade.
Engine Oil Filter MOPAREngine Oil Filter or equivalent.
Spark Plugs RE14PLP5 (Gap 0.050 in [1.27 mm])
Fuel Selection 87 Octane
448 MAINTAINING YOUR VEHICLE

Battery............................... 409
Emergency Starting ..................... 394
Keyless Transmitter Replacement (RKE) ....... 23
Belts, Seat ............................ 39,75
Body Mechanism Lubrication ............... 411
Brake Assist System ...................... 320
Brake Assist Warning Light ................. 211
Brake Control System, Electronic ............. 318
Brake System ........................... 421
Anti-Lock (ABS) .................... 316,319
Master Cylinder ....................... 422
Parking ............................. 315
Warning Light ........................ 202
Brake/Transmission Interlock ............... 286
Break-In Recommendations, New Vehicle ........ 73
Bulb Replacement ..................... 443,444
Bulbs, Light ............................ 76
Capacities, Fluid ........................ 447 Caps, Filler
Fuel ............................... 361
Power Steering ........................ 314
Car Washes ............................ 429
Carbon Monoxide Warning ...............74,360
Cargo Light ............................ 97
Cargo (Vehicle Loading) ................... 363
Cellular Phone ........................ 82,263
Center High Mounted Stop Light ............ 446
Certification Label ....................... 363
Chains, Tire ............................ 350
Changing A Flat Tire ..................... 389
Chart, Tire Sizing ........................ 335
Check Engine Light
(Malfunction Indicator Light) .............210,403
Checking Your Vehicle For Safety ............. 74
Checks, Safety ........................... 74
Child Restraint ...................... 61,68,71
Child Restraint Tether Anchors .............66,68
10
INDEX 483

Fuel Requirements.................. 356,447
Jump Starting ......................... 394
Oil .............................. 406,447
Oil Disposal .......................... 408
Oil Filter ............................ 408
Oil Selection .......................... 447
Overheating .......................... 388
Starting ............................. 277
Temperature Gauge .................... 204
Engine Oil Viscosity ...................... 408
Engine Oil Viscosity Chart ................. 408
Enhanced Accident Response Feature .......... 57
Entry System, Illuminated .................. 19
Event Data Recorder ...................... 59
Exhaust Gas Caution ................... 74,360
Exhaust System ....................... 74,413
Extender, Seat Belt ........................ 48
Exterior Finish Care ...................... 429
Exterior Lights .......................... 76 Fabric Care
......................... 432,433
Fabric Top ............................. 433
Filters Air Cleaner .......................... 409
Engine Oil ........................... 408
Finish Care ............................ 429
Flashers Hazard Warning ....................... 388
Turn Signal ................... 76,201,445,446
Flooded Engine Starting ................... 278
Fluid Capacities ......................... 447
Fluid Leaks ............................. 76
Fluid Level Checks ...................... 427
Automatic Transmission ................. 423
Engine Oil ........................... 406
Manual Transmission ................... 426
Power Steering ........................ 314
Fluids, Lubricants and Genuine Parts .......... 448
Fog Light Service ........................ 445
486 INDEX