2010 JEEP GRAND CHEROKEE check engine light

23. Charging System Light
This light shows the status of the electrical charging
system. The light should come on when the ignition
switch is first turned ON and remain on briefly as a bulb
check. If the light stays on or comes on while driving, turn
off some of the vehicle’s non-essential electrical devices or
increase engine speed (if at idle). If the charging system
light remains on, it means that the vehicle is experiencing
a problem with the charging system. Obtain SERVICE
IMMEDIATELY. See an authorized dealer.
If jump starting is required, refer to “Jump Starting
Procedures” in “What To Do In Emergencies”.
24. Low Fuel Warning Light When the fuel level reaches approximately 2.3 U.S.
Gallons (8.7 Liters) this light will come on and
remain on until fuel is added. The Low Fuel
Warning Light may turn on and off again, especially
during and after hard braking, accelerations, or turns.
This occurs due to the shifting of the fuel in the tank.
ELECTRONIC VEHICLE INFORMATION CENTER
(EVIC)
The Electronic Vehicle Information Center (EVIC) fea-
tures a driver-interactive display that is located in the
instrument cluster.
Electronic Vehicle Information Center
166 UNDERSTANDING YOUR INSTRUMENT PANEL

WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to ensure accurate fluid level reading. Do
not overfill. Use only manufacturers recommended
power steering fluid.
If necessary, add fluid to restore to the proper indicated
level. With a clean cloth, wipe any spilled fluid from all
surfaces.
PARKING BRAKE
Before leaving the vehicle, make sure that the parking
brake is fully applied and place the shift lever in the
PARK position.
The parking brake lever is located in the center console.
To apply the parking brake, pull the lever up as firmly as possible. To release the parking brake, pull the lever up
slightly, press the center button, then lower the lever
completely.
When the parking brake is applied with the ignition
switch in the ON position, the “Brake Warning Light” in
the instrument cluster will illuminate.
Parking Brake
250 STARTING AND OPERATING

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 “Electronic Vehicle
Information Center (EVIC)” in “Understanding Your
Instrument Panel” for further information. Tighten the
314 MAINTAINING YOUR VEHICLE

gas cap until aclickingsound is heard. This is an
indication that the gas cap is properly tightened.
The message will remain displayed until the vehicle
diagnostic system can retest the fuel system. The test will
perform the next time the vehicle is started, if the vehicle
was keyed off above 40°F (4°C) outside temperature and
the following vehicle start is above 40°F (4°C) outside
temperature. It may be possible to have a message that
will not clear due to the test being disabled due to low
outside 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 MIL. Resolving the problem will turn the
MIL 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 that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction
Indicator Light (MIL)” is functioning and is not
on when the engine is running, and that the OBD II
system is ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may notbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. If the OBD II system should be determined not
ready for the I/M test, your vehicle may fail the test.
7
MAINTAINING YOUR VEHICLE 315

•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 a
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 (EVIC)/Oil Change Required” in
“Understanding Your Instrument Panel” for further in-
formation.
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 the coolant reservoir, brake
master cylinder, and power steering and add as
needed.
•Check all lights and other electrical items for correct
operation.8
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SMAINTENANCE SCHEDULES 361

ABS (Anti-Lock Brake System)............159,252
Adding Engine Coolant (Antifreeze) .......... 330
Adding Fuel ........................... 287
Additives, Fuel ......................... 285
Adjustable Pedals ........................ 114
Air Conditioner Maintenance ............... 322
Air Conditioning, Operating Tips ............ 232
Air Conditioning Refrigerant ............... 323
Air Pressure, Tires ....................... 274
Airbag .............................. 45,54
Airbag Deployment ....................... 55
Airbag Light ................... 46,53,58,73,159
Airbag Maintenance ....................... 57
Airbag, Side .......................... 51,54
Airbag, Window (Side Curtain) ...........48,51,54
Alarm, Panic ............................ 22
Alarm (Security Alarm) .................17,159
Alterations/Modifications, Vehicle ............. 8
Antenna, Satellite Radio ................... 216 Antifreeze (Engine Coolant)
..............329,355
Disposal ............................ 332
Anti-Lock Brake System (ABS) ............252,255
Anti-Lock Warning Light .................. 159
Anti-Theft System ....................... 159
Appearance Care ........................ 336
Arming Theft System (Security Alarm) ......... 17
Auto Down Power Windows ................ 30
Automatic Dimming Mirror ................. 80
Automatic Door Locks ..................... 28
Automatic Headlights .................... 101
Automatic Temperature Control (ATC) ......... 225
Automatic Transmission ................242,335
Fluid Level Check ..................... 335
Autostick ............................. 245
Auxiliary Electrical Outlet (Power Outlet) ...... 137
Auxiliary Power Outlet ................... 137
Battery ............................... 322
388 INDEX

Check Engine Light
(Malfunction Indicator Light)............... 315
Checking Your Vehicle For Safety ............. 71
Checks, Safety ........................... 71
Child Restraint .................... 60,61,66,68
Child Restraint Tether Anchors .............65,66
Child Safety Locks ........................ 28
Clean Air Gasoline ....................... 283
Climate Control ......................... 225
Clock ........................ 185,187,190,199
Cold Weather Operation ................... 239
Compact Disc (CD) Maintenance ............. 224
Compass .............................. 177
Compass Calibration ..................... 177
Compass Variance ....................... 178
Computer, Trip/Travel .................... 171
Connector UCI ................................ 210
Universal Consumer Interface (UCI) ......... 210Console, Overhead
....................... 127
Contract, Service ........................ 381
Coolant Pressure Cap (Radiator Cap) .......... 331
Cooling System ......................... 328
Adding Coolant (Antifreeze) .............. 330
Coolant Capacity ...................... 355
Coolant Level ...................... 328,332
Disposal of Used Coolant ................ 332
Drain, Flush, and Refill .................. 329
Inspection ........................... 332
Points to Remember .................... 332
Pressure Cap ......................... 331
Radiator Cap ......................... 331
Selection of Coolant (Antifreeze) .........329,355
Cruise Light ........................... 164
Cupholders ............................ 143
Customer Assistance ..................... 379
Daytime Running Lights ................... 103
390 INDEX

Checking Oil Level..................... 318
Compartment ......................... 313
Compartment Identification ............... 313
Coolant (Antifreeze) .................... 328
Cooling ............................. 328
Exhaust Gas Caution .................. 71,286
Fails to Start .......................... 239
Flooded, Starting ...................... 239
Fuel Requirements .................. 282,355
Jump Starting ......................... 304
Oil .............................. 318,355
Oil Change Interval .................... 319
Oil Selection ....................... 319,355
Overheating .......................... 302
Starting ............................. 238
Temperature Gauge .................... 162
Engine Oil Viscosity ...................... 320
Engine Oil Viscosity Chart ................. 320
Enhanced Accident Response Feature .......... 55Entry System, Illuminated
.................. 18
Ethanol ............................... 283
Exhaust Gas Caution ................71,286,326
Exhaust System ....................... 71,325
Exterior Finish Care ...................... 337
Exterior Lights .......................... 73
Filters Air Cleaner .......................... 321
Engine Oil ........................... 321
Engine Oil Disposal .................... 321
Finish Care ............................ 337
Flashers .............................. 302
Hazard Warning ....................... 302
Turn Signal ................... 73,157,351,352
Flipper Glass, Liftgate ..................... 33
Flooded Engine Starting ................... 239
Fluid, Brake ........................... 334
Fluid Capacities ......................... 355
392 INDEX