check engine JEEP COMMANDER 2009 1.G Owner's Manual

WARNING!
•The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precau-
tion. Never add engine coolant (antifreeze) when
the engine is overheated. Do not loosen or remove
the cap to cool an overheated engine. Heat causes
pressure to build up in the cooling system. To
prevent scalding or injury, do not remove the
pressure cap while the system is hot or under
pressure.
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
Disposal of Used Engine Coolant
Used ethylene glycol-based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposal
rules for your community. To prevent ingestion by ani-
mals and children, do not store ethylene glycol-based
engine coolant (antifreeze) in open containers or allow it
to remain in puddles on the ground. If ingested by a
child, contact a physician immediately. Clean up any
ground spills immediately.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the engine coolant (antifreeze) level is
adequate. With the engine idling, and warm to normal
operating temperature, the level of the engine coolant
(antifreeze) in the bottle should be between the ranges
indicated on the bottle.
MAINTAINING YOUR VEHICLE 435
7

The radiator normally remains completely full, so there is
no need to remove the radiator cap, unless checking for
engine coolant (antifreeze) freeze point or replacing en-
gine coolant (antifreeze). Advise your service attendant
of this. As long as the engine operating temperature is
satisfactory, the coolant bottle need only be checked once
a month.
When additional engine coolant (antifreeze) is needed to
maintain the proper level, it should be added to the
coolant bottle. Do not overfill.
Points To Remember
NOTE:When the vehicle is stopped after a few miles
(kilometers) of operation, you may observe vapor coming
from the front of the engine compartment. This is nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot engine
coolant (antifreeze) to enter the radiator.If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
•Do not overfill the coolant recovery bottle.
•Check the engine coolant (antifreeze) freeze point in
the radiator and in the coolant recovery bottle. If
engine coolant (antifreeze) needs to be added, contents
of coolant recovery bottle must also be protected
against freezing.
•If frequent engine coolant (antifreeze) additions are
required, or if the level in the coolant recovery bottle
does not drop when the engine cools, the cooling
system should be pressure tested for leaks.
•Maintain engine coolant (antifreeze) concentration at
50% HOAT engine coolant (antifreeze) (minimum)
and distilled water for proper corrosion protection of
your engine, which contains aluminum components.
436 MAINTAINING YOUR VEHICLE

With disc brakes, the fluid level can be expected to fall as
the brake linings wear. However, an unexpected drop in
fluid level may be caused by a leak and a system check
should be conducted.
Refer to “Fluids, Lubricants, and Genuine Parts” in this
section for the correct fluid type.
WARNING!
•Use of a brake fluid that may have a lower initial
boiling point, or is unidentified as to specification,
may result in sudden brake failure during hard
prolonged braking. You could have an accident.
•Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and the
brake fluid catching fire.Use only brake fluid that has been in a tightly-closed
container to avoid contamination from foreign matter or
moisture.
CAUTION!
Do not allow a petroleum-base fluid to contaminate
the brake fluid. Seal damage may result.
Front/Rear Axle Fluid
Front Axle Fluid Level Check
Lubricant should be to the bottom of the oil fill hole.
Rear Axle Fluid Level Check
Lubricant should be 1/2 inch (1 cm) below the oil fill
hole.
Adding Fluid
Add lubricant only at the fill hole and only to the level
specified above.
438 MAINTAINING YOUR VEHICLE

Fluid Level Check (3.7L Engine)
Regular fluid level checks are not required. For this
reason, the dipstick is omitted.
If you notice fluid loss or shift lever malfunction, have
your authorized dealer check the transmission fluid level.
CAUTION!
•Using a transmission fluid other than the manu-
facturer’s recommended fluid may cause deterio-
ration in transmission shift quality and/or torque
converter shudder. Using a transmission fluid
other than that recommended by the manufacturer
will result in more frequent fluid and filter
changes. Refer to “Fluids, Lubricants, and Genu-
ine Parts” in this section for the correct fluid type.
(Continued)
CAUTION! (Continued)
•The fluid level is preset at the factory and it does
not require adjustment under normal operating
conditions. If a transmission fluid leak occurs,
visit your authorized dealer immediately. Severe
damage to the transmission may occur. Your au-
thorized dealer has the proper tools to adjust the
fluid level accurately.
Fluid Level Check (4.7L and 5.7L Engine)
Check the fluid level while the transmission is at normal
operating temperature. This occurs after at least 15 miles
(25 km) of driving. At normal operating temperature the
fluid cannot be held comfortably between the fingertips.
To check the fluid level properly, the following procedure
must be used:
1. Operate the engine at idle speed and normal operating
temperature.
MAINTAINING YOUR VEHICLE 441
7

•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 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy 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
(4.7L and 5.7L engines) and add as needed.
•Check all lights and other electrical items for correct
operation.
At Each Oil Change
•Change the engine oil filter.
•Inspect the brake hoses and lines.
MAINTENANCE SCHEDULES 471
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ABS (Anti-Lock Brake System).............. 320
Adding Fuel........................... 375
Adjustable Pedals....................... 152
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 424
Air Conditioner Maintenance............... 426
Air Conditioning........................ 274
Air Conditioning, Operating Tips............ 283
Air Conditioning, Rear Zone................ 281
Air Conditioning Refrigerant............... 427
Air Conditioning System.................. 274
Air Filter.............................. 424
Air Pressure, Tires....................... 347
Airbag................................ 52
Airbag Deployment....................... 59
Airbag Light.......................61,75,193
Airbag Maintenance....................... 61
Alarm, Panic............................ 24
Alarm (Security Alarm).................20,194
Alterations/Modifications, Vehicle............. 9Antenna, Satellite Radio................... 264
Antifreeze (Engine Coolant)................ 465
Anti-Lock Brake System (ABS)............320,323
Anti-Lock Warning Light.................. 193
Anti-Theft System....................... 194
Appearance Care........................ 444
Arming Theft System (Security Alarm)......... 20
Assist, Hill Start........................ 332
Assistance Towing....................... 102
Auto Down Power Windows................ 35
Automatic Dimming Mirror................. 84
Automatic Door Locks..................... 30
Automatic Headlights.................... 141
Automatic Temperature Control (ATC)......... 274
Automatic Transmission................299,440
Adding Fluid......................... 442
Fluid and Filter Changes................. 440
Fluid Level Check..................... 441
Fluid Type........................... 440
496 INDEX

Cargo Load Floor........................ 178
Cargo (Vehicle Loading)................... 378
Cellular Phone........................88,270
Center High Mounted Stop Light............ 464
Certification Label....................... 378
Chains, Tire............................ 354
Changing A Flat Tire..................... 401
Chart, Tire Sizing........................ 339
Check Engine Light
(Malfunction Indicator Light)............... 419
Checks, Safety........................... 75
Child Restraint....................64,65,69,71
Child Restraint Tether Anchors.............68,69
Child Safety Locks........................ 33
Climate Control......................... 271
Clock........................220,234,237,247
Cold Weather Operation................... 294
Command View Skylights.................. 172
Compact Disc (CD) Maintenance............. 270Compact Spare Tire...................... 349
Compass.............................. 210
Compass Calibration..................... 210
Compass Variance....................... 211
Computer, Trip/Travel.................... 206
Connector
UCI ................................ 257
Universal Consumer Interface (UCI)......... 257
Console, Overhead....................... 162
Contract, Service........................ 489
Cooling System......................... 431
Adding Coolant (Antifreeze).............. 433
Coolant Capacity...................... 465
Coolant Level......................... 435
Disposal of Used Coolant................ 435
Drain, Flush, and Refill.................. 432
Inspection........................... 431
Points to Remember.................... 436
Pressure Cap......................... 434
498 INDEX

Engine Oil Viscosity Chart................. 423
Enhanced Accident Response Feature.......... 60
Entry System, Illuminated.................. 21
Event Data Recorder...................... 62
Exhaust Gas Caution..............42,74,371,429
Exhaust System......................... 429
Extender, Seat Belt........................ 52
Exterior Finish Care...................... 444
Fabric Care............................ 446
Filters
Air Cleaner.......................... 424
Engine Oil........................... 424
Engine Oil Disposal.................... 424
Finish Care............................ 444
Flashers.............................. 400
Hazard Warning....................... 400
Turn Signal.....................192,460,462Flexible Fuel Vehicles
Cruising Range....................... 374
Engine Oil........................... 374
Fuel Requirements..................372,373
Replacement Parts..................... 375
Starting............................. 374
Flipper Glass, Liftgate..................... 38
Flooded Engine Starting................... 295
Fluid Capacities......................... 465
Fluid Leaks............................. 76
Fluid Level Checks
Automatic Transmission..............440,441
Brake.............................. 437
Engine Oil........................... 422
Power Steering........................ 317
Fluids, Lubricants and Genuine Parts.......... 466
Fog Light Service........................ 461
Fog Lights.......................143,199,461
Fold and Tumble Rear Seat................. 128
INDEX 501
10

Courtesy/Reading..................... 147
Cruise.............................. 198
Daytime Running...................... 143
Dimmer Switch, Headlight.............140,146
Electronic Stability Program (ESP) Indicator . . . 336
Electronic Throttle Control Warning......... 199
Fog ..........................143,199,461
Four-Wheel Drive Indicator............... 198
Fuses............................... 449
Hazard Warning Flasher................. 400
Headlight Switch...................... 140
Headlights........................... 458
Headlights On With Wipers............... 141
High Beam Indicator.................... 192
Illuminated Entry....................... 21
Instrument Cluster..................140,144
Interior..........................144,147
Lights On Reminder.................... 145
Low Fuel............................ 200Malfunction Indicator (Check Engine)........ 193
Oil Pressure.......................... 194
Passing............................. 146
Reading............................. 147
Rear Servicing........................ 462
Rear Tail............................ 462
Seat Belt Reminder..................... 198
Security Alarm (Theft Alarm).............. 194
Service............................. 458
Service Engine Soon (Malfunction Indicator) . . . 193
Side Marker.......................... 462
SmartBeams.......................... 141
Tire Pressure Monitoring (TPMS)........... 195
Tow/Haul Indicator.................... 197
Traction Control....................... 336
Turn Signal..................140,145,460,462
Vanity Mirror.......................... 87
Voltage............................. 199
Load Floor, Cargo....................... 178
INDEX 505
10

Loading Vehicle......................... 378
Tires ............................... 342
Locks................................. 29
Automatic Door........................ 30
Child Protection........................ 33
Door................................ 29
Power Door........................... 30
Lower Anchors and Tether for CHildren
(LATCH)............................68,69
Lubrication, Body....................... 427
Luggage Rack (Roof Rack)................. 181
Lumbar Support........................ 122
Maintenance Free Battery.................. 425
Maintenance Procedures................... 422
Maintenance Schedule.................... 470
Malfunction Indicator Light
(Check Engine).......................193,419
Manual, Service......................... 491Memory Feature (Memory Seat)............. 134
Memory Seat........................... 134
Memory Seats and Radio.................. 134
Mini-Trip Computer...................... 206
Mirrors................................ 83
Automatic Dimming..................... 84
Electric Powered....................... 86
Electric Remote........................ 86
Exterior Folding........................ 85
Heated.............................. 87
Outside.............................. 85
Rearview............................. 83
Vanity............................... 87
Modifications/Alterations, Vehicle............. 9
Monitor, Tire Pressure System............... 356
Mopar Parts.........................421,490
Multi-Displacement Engine System........... 323
Multi-Function Control Lever............... 140
506 INDEX