fuel cap JEEP COMMANDER 2008 1.G User Guide

Each axle 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 vehi-
cle'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 insure that the GVWR has not been exceeded.
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 the front
STARTING AND OPERATING 345
5

MAINTAINING YOUR VEHICLE
CONTENTS
mEngine Compartment ± 3.7L...............382
mEngine Compartment ± 4.7L...............383
mEngine Compartment ± 5.7L...............384
mOnboard Diagnostic System Ð OBD II........385
NLoose Fuel Filler Cap Message............386
mEmissions Inspection And Maintenance
Programs............................386
mReplacement Parts......................388
mDealer Service.........................388mMaintenance Procedures..................389
NEngine Oil..........................389
NDrive Belts Ð Check Condition And Tension . . 392
NSpark Plugs.........................392
NSpark Plug Wires.....................392
NEngine Air Cleaner Filter................393
NCatalytic Converter....................393
NCrankcase Emission Control System........395
NMaintenance-Free Battery................395
7

Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is loose, improperly
installed, or damaged. A ªCHECK GASCAPº message
will be displayed in the EVIC (Refer to Section 4 of this
manual). Tighten the gas cap until a9clicking9sound is
heard. This is an indication that the gas cap is properly
tightened.
This message may be temporarily overridden by pressing
either the C/T, STEP, or MENU buttons. However, after
one minute of no customer interaction, the EVIC will
display again the ªCHECK GASCAPº message. The
message will remain displayed until the vehicle diagnos-
tic system can retest the fuel system. The test will
perform the next time the vehicle is started, if the vehicle
was keyed off above 40ÉF (4ÉC) outside temperature and
the following vehicle start is above 40ÉF (4ÉC) outside
temperature. It may be possible to have a message that
will not clear due to the test being disabled due to lowoutside temperatures. If the test is performed and the
problem is gone, the message will disappear.
If the problem persists, the message will appear the next
time the vehicle is started. This might indicate a damaged
cap. If the problem is detected twice in a row, the system
will turn on the Malfunction Indicator Light (MIL).
Resolving the problem will turn the MIL light off. See
your authorized dealer for service.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle's emissions control system.
Failure to pass could prevent vehicle registration.
For states which have an I/M (Inspection and
Maintenance) requirement, this check verifies the
following: the MIL (Malfunction Indicator Lamp)
386 MAINTAINING YOUR VEHICLE

CAUTION!
Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage
your engine.
Change Engine Oil
Refer to the Maintenance Schedule for recommended
engine oil change intervals.
Engine Oil Selection
For best performance and maximum protection for all
engines under all types of operating conditions, the
manufacturer only recommends engine oils that are API
Certified and meet the requirements of DaimlerChrysler
Material Standard MS-6395.
American Petroleum Institute (API) Engine Oil
Identification Symbol
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends
API Certified engine oils.
Engine Oil Viscosity (3.7L/4.7L/5.7L Engines)
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 vehicle. For information on engine oil filler cap
location, refer to the ªEngine Compartmentº illustration
in this section.
390 MAINTAINING YOUR VEHICLE

Pay particular attention to the hoses nearest to high heat
sources such as the exhaust manifold. Inspect hose rout-
ing to be sure hoses do not touch any heat source or
moving component that may cause heat damage or
mechanical wear.
Insure nylon tubing in these areas has not melted or
collapsed. Inspect all hose connections such as clamps
and couplings to make sure they are secure and no leaks
are present. Components should be replaced immedi-
ately if there is any evidence of degradation that could
cause failure.
Fuel System Connections
Electronic Fuel Injection high pressure fuel systems are
designed with tubes and special connects, connections
and clamps which have unique material characteristics to
provide adequate sealing and resist attack by deterio-
rated gasoline.You are urged to use only the manufactures-specified
tubes, connections and clamps, or their equivalent in
material and specification, in any fuel system servicing.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Refer to the Maintenance Schedule in Section 8 for
suggested service intervals.
WARNING!
Riding the brakes can lead to brake failure and
possibly an accident. Driving with your foot resting
or riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You wouldn't have your full
braking capacity in an emergency.
MAINTAINING YOUR VEHICLE 407
7

FLUIDS AND CAPACITIES
U.S. Metric
Fuel (Approximate)21 Gallons 79 Liters
Engine Oil with Filter
3.7 Liter Engine (SAE 5W-20, API Certified) 5 Qts 4.7 Liters
4.7 Liter Engine (SAE 5W-20, API Certified) 6 Qts 5.7 Liters
5.7 Liter Engine (SAE 5W-20, API Certified) 7 Qts 6.6 Liters
Cooling System *
3.7 Liter Engine (MopartEngine Coolant/Antifreeze 5 Year/
100,000 Mile Formula)9 Qts 10 Liters
4.7 Liter Engine (MopartEngine Coolant/Antifreeze 5 Year/
100,000 Mile Formula)14.5 Qts 13.7 Liters
5.7 Liter Engine (MopartEngine Coolant/Antifreeze 5 Year/
100,000 Mile Formula)14.5 Qts 13.7 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
MAINTAINING YOUR VEHICLE 435
7

FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant MopartAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or-
ganic Additive Technology)
Engine Oil (3.7L/4.7L/5.7L En-
gines)Use API Certified SAE 5W-20 Engine Oil, meeting the requirements of
DaimlerChrysler Material Standard MS-6395. Refer to your engine oil filler
cap for correct SAE grade.
Oil Filter (All Engines) MopartOil Filter (P/N 05281090)
Spark Plugs (3.7L Engine) ZFR6F-11G (Gap 0.043º)
Spark Plugs (4.7L Engine) Upper Bank Ð FR8TE2 (Gap 0.040º) Lower Bank Ð FR8T1332 (Gap 0.050º)
Spark Plugs (5.7L Engine) REC14MCC4 (Gap 0.043º)
Fuel Selection (3.7L and 4.7L En-
gines)87 Octane
Fuel Selection (5.7L Engines) 87 Octane Acceptable - 89 Octane Recommended
436 MAINTAINING YOUR VEHICLE

Fluid and Filter Changes................. 411
Fluid Level Check................... 411,412
Fluid Type........................... 411
Special Additives...................... 414
Torque Converter...................... 288
Autostick............................. 285
Auxiliary Electrical Outlet (Power Outlet)...... 169
Auxiliary Power Outlet................... 169
Battery............................... 395
Emergency Starting..................... 374
Keyless Transmitter Replacement (RKE)....... 25
Saving Feature (Protection)............... 125
Belts, Drive............................ 392
Belts, Seat.............................. 39
Body Mechanism Lubrication............... 399
B-Pillar Location........................ 311
Brake Assist System...................... 141
Brake Control System, Electronic............. 139Brake System........................... 407
Anti-Lock (ABS)....................139,302
Hoses.............................. 408
Master Cylinder....................... 408
Parking............................. 300
Warning Light........................ 187
Brake/Transmission Interlock............... 283
Break-In Recommendations, New Vehicle........ 69
Bulb Replacement.....................427,428
Calibration, Compass..................... 204
Camera, Rear........................... 157
Capacities, Fluid........................ 435
Caps, Filler
Fuel................................ 341
Radiator (Coolant Pressure)............... 404
Car Washes............................ 415
Carbon Monoxide Warning...............70,337
Cargo Area Features...................... 174
INDEX 459
10

Pressure Cap......................... 404
Radiator Cap......................... 404
Selection of Coolant (Antifreeze).........402,435
Courtesy Lights......................... 130
Crankcase Emission Control System.......... 395
Cruise Light........................... 193
Cup Holder............................ 172
Customer Assistance..................... 448
Data Recorder, Event...................... 58
Daytime Running Lights................... 128
Dealer Service.......................... 388
Defroster, Rear Window................... 177
Defroster, Windshield................71,258,265
Diagnostic System, Onboard................ 385
Digital Video Disc (DVD) Player............. 239
Dimmer Switch, Headlight................. 129
Dipsticks
Automatic Transmission................. 412Oil (Engine).......................... 389
Power Steering........................ 398
Disabled Vehicle Towing................... 378
Disposal
Antifreeze (Engine Coolant)............... 405
Engine Oil........................... 391
Used Engine Fluids..................... 391
Door Locks............................. 28
Door Locks, Automatic.................... 29
Door Opener, Garage..................... 159
Drive Belts............................ 392
Driving............................... 296
Off-Pavement......................... 296
Off-Road............................ 296
DVD Player (Video Entertainment System)...... 253
E-85 Fuel............................. 337
Electric Remote Mirrors.................... 80
Electrical Outlet, Auxiliary (Power Outlet)...... 169
INDEX 461
10

Starting............................. 277
Temperature Gauge..................... 191
Engine Oil Viscosity...................... 390
Engine Oil Viscosity Chart................. 390
Enhanced Accident Response Feature.......... 56
Entry System, Illuminated.................. 21
Event Data Recorder...................... 58
Exhaust Gas Caution.................38,70,337
Exhaust System......................... 401
Extender, Seat Belt........................ 48
Exterior Finish Care...................... 415
Filters
Air Cleaner.......................... 393
Engine Oil........................... 391
Engine Oil Disposal.................... 391
Finish Care............................ 415
Flashers.............................. 366
Hazard Warning....................... 366Turn Signal.....................187,430,432
Flexible Fuel Vehicles
Cruising Range........................ 340
Engine Oil........................... 340
Fuel Requirements..................337,339
Replacement Parts..................... 340
Starting............................. 340
Flipper Glass, Liftgate..................... 35
Flooded Engine Starting................... 279
Fluid Capacities......................... 435
Fluid Leaks............................. 72
Fluid Level Checks
Automatic Transmission............... 411,412
Engine Oil........................... 389
Power Steering........................ 398
Fluids, Lubricants and Genuine Parts.......... 436
Fog Light Service........................ 431
Fog Lights.......................128,194,431
Fold and Tumble Rear Seat................. 113
INDEX 463
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