2010 JEEP COMMANDER manual transmission

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 loose, improperly
installed, or damaged. A “CHECK GASCAP” message
will be displayed in the EVIC (Refer to Section 4 of this
manual). Tighten the gas cap until aclickingsound is
heard. This is an indication that the gas cap is properly
tightened.
7
MAINTAINING YOUR VEHICLE 359

CAUTION!
Be aware that if the fluid temperature is below 50°F
(10°C) it may not register on the dipstick. Do not add
fluid until the temperature is elevated enough to
produce an accurate reading.
7. Check for leaks. Release parking brake.
To prevent dirt and water from entering the transmission
after checking or replenishing fluid, make certain that the
dipstick cap is properly reseated. It is normal for the
dipstick cap to spring back slightly from its fully seated
position, as long as its seal remains engaged in the
dipstick tube.
Maintenance After Off-Road Driving
After extended operation in mud, sand or water, or
similar dirty conditions, have your brake discs, brake
linings, and axle joints inspected and cleaned as soon as possible. This will prevent any abrasive material from
causing excessive wear or unpredictable braking action.
After driving off-road, completely inspect the underbody
of your vehicle. Check the tires, body structure, steering,
suspension and exhaust system for damage. Check
threaded fasteners for looseness, particularly on the
chassis, drivetrain components, steering and suspension.
Retighten, if required, to torque values specified in the
Service Manual. Also check for accumulations of vegeta-
tion or brush that could become a fire hazard, or conceal
damage to fuel lines, brake hoses, axle pinion seals, and
propeller shafts.
386 MAINTAINING YOUR VEHICLE

•Change your engine oil more often if you drive your
vehicle off-road for an extended period of time.
•Under no circumstances should oil change intervals
exceed 6,000 miles (10,000 km) or 6 months, whichever
comes first.
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If this
scheduled oil change is performed by someone other
than your authorized dealer the message can be reset by
referring to the steps described under ”Electronic Vehicle
Information Center” in Section 4 of this manual.
At Each Stop for Fuel
•Check the engine oil level about five minutes after a
fully warmed engine is shut off. Checking the oil level
while the vehicle is on level ground will improve the
accuracy of the oil level reading. Add oil only when
the level is at or below the ADD or MIN mark.
•Check the windshield washer solvent and add if
required.
Once a Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of coolant reservoir, brake
master cylinder, power steering and transmission
(5.7L engine) and add as needed.
•Check all lights and other electrical items for correct
operation.
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SMAINTENANCE SCHEDULES 413

Pretensioners.......................... 46
Reminder ............................ 168
Shoulder Belt Anchorage ................. 44
Seats ................................. 85
Adjustment ........................... 86
Cleaning ............................ 390
Easy Entry ........................... 102
Fold and Tumble Rear ................... 93
Head Restraints ........................ 89
Heated ............................ 90,91
Lumbar Support ....................... 87
Memory ............................. 98
Power ............................... 88
Rear Folding ........................ 93,97
Reclining ............................. 86
Seatback Release ....................... 97
Security Against Theft ..................... 19
Security Alarm (Theft Alarm) .............19,163
Selection of Oil ......................... 364 Sentry Key (Immobilizer)
................... 17
Sentry Key Programming ................... 18
Sentry Key Replacement ................... 18
Service Assistance ....................... 433
Service Contract ......................... 435
Service Engine Soon Light (Malfunction
Indicator) ............................. 162
Service Manuals ........................ 437
Setting the Clock .................. 186,190,199
Settings, Personal ........................ 181
Shift Lock Manual Override ................ 247
Shifting ............................... 246
Automatic Transmission ................. 246
Shoulder Belts ........................... 40
Signals, Turn ................. 76,110,161,402,404
Sirius Backseat TV™ (uconnect studios)....... 219
Skylights, Command View ................. 139
SmartBeams ........................... 106
Snow Chains (Tire Chains) ................. 301
456 INDEX