2010 JEEP WRANGLER fuel cap

MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment — 3.8L ............. 455
 Onboard Diagnostic System — OBD II ...... 456
▫ Loose Fuel Filler Cap Message ........... 456
 Emissions Inspection And Maintenance
Programs ............................ 457
 Replacement Parts ..................... 458
 Dealer Service ........................ 458
 Maintenance Procedures ................. 459
▫ Engine Oil ......................... 460 ▫
Engine Oil Filter ..................... 462
▫ Engine Air Cleaner Filter ............... 463
▫ Maintenance-Free Battery .............. 463
▫ Air Conditioner Maintenance ............ 465
▫ Body Lubrication .................... 466
▫ Windshield Wiper Blades ............... 466
▫ Adding Washer Fluid ................. 467
▫ Exhaust System ..................... 468
▫ Cooling System ..................... 470
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,
456 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 “Maintaining Your Vehicle” for further informa-
tion.
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 with a new filter
at every engine oil change.
462 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES
U.S.Metric
Fuel (Approximate) — Two Door Models 18.5 Gallons70 Liters
Fuel (Approximate) — Four Door Models 22.5 Gallons85 Liters
Engine Oil with Filter
3.8 Liter Engine 6 Quarts5.7 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 501

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
502 MAINTAINING YOUR VEHICLE

Axle Lock.......................... 350,351
Battery ............................... 463
Keyless Transmitter Replacement (RKE) ....... 23
Belts, Seat ............................ 39,77
Body Mechanism Lubrication ............... 466
Brake Assist System ...................... 374
Brake Assist Warning Light ................. 259
Brake Control System, Electronic ............. 373
Brake System ........................... 476
Anti-Lock (ABS) .................... 371,373
Master Cylinder ....................... 476
Parking ............................. 369
Warning Light ........................ 248
Brake/Transmission Interlock ............... 340
Break-In Recommendations, New Vehicle ........ 75
Bulb Replacement ..................... 497,498
Bulbs, Light ............................ 79 Capacities, Fluid
........................ 501
Caps, Filler Fuel ............................... 416
Power Steering ........................ 368
Car Washes ............................ 483
Carbon Monoxide Warning ...............76,415
Cargo Light ............................ 140
Cargo (Vehicle Loading) ................... 418
Cellular Phone ........................ 88,317
Center High Mounted Stop Light ............ 500
Certification Label ....................... 418
Changing A Flat Tire ..................... 442
Chart, Tire Sizing ........................ 389
Check Engine Light (Malfunction Indicator
Light) ............................. 257,457
Checking Your Vehicle For Safety ............. 75
Checks, Safety ........................... 75
Child Restraint .................... 61,62,69,72
10
INDEX 537

Flooded, Starting...................... 332
Fuel Requirements .................. 41 1,501
Jump Starting ......................... 446
Oil .............................. 460,501
Oil Disposal .......................... 462
Oil Filter ............................ 462
Oil Selection .......................... 501
Overheating .......................... 440
Starting ............................. 331
Temperature Gauge .................... 251
Engine Oil Viscosity ...................... 462
Engine Oil Viscosity Chart ................. 462
Enhanced Accident Response Feature .......... 58
Entry System, Illuminated .................. 19
Event Data Recorder ...................... 60
Exhaust Gas Caution ................... 76,415
Exhaust System ....................... 76,468
Extender, Seat Belt ........................ 49
Exterior Finish Care ...................... 483 Exterior Lights
.......................... 79
Fabric Care ......................... 485,487
Fabric Top ............................. 487
Filters Air Cleaner .......................... 463
Engine Oil ........................... 462
Finish Care ............................ 483
Flashers Hazard Warning ....................... 440
Turn Signal ................... 79,247,499,500
Flooded Engine Starting ................... 332
Fluid Capacities ......................... 501
Fluid Leaks ............................. 79
Fluid Level Checks ...................... 482
Automatic Transmission ................. 478
Engine Oil ........................... 460
Manual Transmission ................... 481
Power Steering ........................ 368
540 INDEX

Fluids, Lubricants and Genuine Parts.......... 502
Fog Light Service ........................ 499
Fog Lights .......................... 138,499
Fold and Tumble Rear Seat ................. 130
Folding Rear Seat ........................ 133
Four Wheel Drive ....................... 345
Shifting ............................. 347
Four Wheel Drive Operation ................ 345
Four-Way Hazard Flasher .................. 440
Front Axle (Differential) ................... 482
Fuel ................................. 411
Filler Cap (Gas Cap) .................... 416
Gasoline ............................ 411
Gauge .............................. 246
Materials Added ....................... 414
Octane Rating ........................ 411
Requirements ......................... 501
Tank Capacity ........................ 501
Fuel System Caution ................... 414,417Fuses
................................ 490
Gas Cap (Fuel Filler Cap) ............416,418,456
Gasoline (Fuel) ......................... 411
Gasoline, Reformulated ................... 412
Gasoline/Oxygenate Blends ................ 412
Gauges Coolant Temperature ................... 251
Fuel ............................... 246
Odometer ........................... 254
Speedometer ......................... 246
Tachometer .......................... 250
Gear Ranges ........................ 336,342
General Information ................. 17,119,411
Glass Cleaning .......................... 486
Gross Axle Weight Rating ...............419,421
Gross Vehicle Weight Rating .............418,421
GVWR ............................... 418
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INDEX 541