check engine light JEEP GRAND CHEROKEE 2015 WK2 / 4.G SRT User Guide

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 driveability.
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.
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
528 MAINTAINING YOUR VEHICLE

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 maynotbe 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.
Your vehicle has a simple ignition actuated test, which
you can use prior to going to the test station. To check if
your vehicle’s OBD II system is ready, you must do the
following:
1. Cycle the ignition switch to the ON position, but do
not crank or start the engine.
NOTE:If you crank or start the engine, you will have to
start this test over.2. As soon as you cycle the ignition switch to the ON
position, you will see the Malfunction Indicator Light
(MIL) symbol come on as part of a normal bulb check.
3. Approximately 15 seconds later, one of two things will
happen:
•The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
the ignition or start the engine. This means that your
vehicle’s OBD II system isnot readyand you should
notproceed to the I/M station.
•The MIL will not flash at all and will remain fully
illuminated until you place the ignition in the off
position or start the engine. This means that your
vehicle’s OBD II system isreadyand you can proceed
to the I/M station.
If your OBD II system isnot ready,you should see your
authorized dealer or repair facility. If your vehicle was
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MAINTAINING YOUR VEHICLE 529

Installing The Rear Wiper
1. Lift the rear wiper arm pivot cap away from the glass
to allow the rear wiper blade to be raised off of the
glass.
NOTE:The rear wiper arm cannot be fully raised off the
glass unless the wiper arm pivot cap is unsnapped first.
Attempting to fully raise the rear wiper arm without
unsnapping the wiper arm pivot cap may damage the
vehicle.
2. Lift the rear wiper arm fully off the glass.
3. Insert the wiper blade pivot pin into the opening on
the end of the wiper arm. Grab the bottom end of the
wiper arm with one hand, and press the wiper blade
flush with the wiper arm until it snaps into place.
4. Lower the wiper blade onto the glass and snap the
wiper arm pivot cap back into place.Adding Washer Fluid
This vehicle is equipped with a Driver Information
Display (DID), the DID will indicate when the washer
fluid level is low. When the sensor detects a low fluid
level, the windshield will light on the vehicle graphic
outline and the “WASHER FLUID LOW” message will be
displayed.
The fluid reservoir for the windshield washers and the
rear window washer is shared. The fluid reservoir is
located in the engine compartment, be sure to check the
fluid level at regular intervals. Fill the reservoir with
windshield washer solvent only (not radiator antifreeze).
When refilling the washer fluid reservoir, take some
washer fluid and apply it to a cloth or towel and wipe
clean the wiper blades, this will help blade performance.
To prevent freeze-up of your windshield washer system
in cold weather, select a solution or mixture that meets or
exceeds the temperature range of your climate. This
7
MAINTAINING YOUR VEHICLE 553

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 “Driver Informa-
tion Display (DID)” in “Understanding Your Instrument
Panel” for further information.
At Each Stop For Fuel
•Check the engine oil level. Refer to “Maintenance
Procedures/Engine Oil” in “Maintaining Your Ve-
hicle” for further information.
•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.
At Each Oil Change
•Change the engine oil filter.
•Inspect the brake hoses and lines.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
8
MAINTENANCE SCHEDULES 597

Alarm (Security Alarm)..................19, 286
Alterations/Modifications, Vehicle...............9
Antifreeze (Engine Coolant)...............558, 591
Disposal..............................560
Anti-Lock Brake System (ABS)................426
Anti-Lock Warning Light....................286
Appearance Care.........................568
Auto Down Power Windows..................42
Automatic Door Locks......................34
Automatic Headlights......................166
Automatic High Beams.....................166
Automatic Temperature Control (ATC).......366, 374
Automatic Transmission.................407, 568
Adding Fluid..........................568
Autostick.............................414
Fluid And Filter Changes..................568
Fluid Change..........................568
Fluid Level Check...................566, 567
Fluid Type.........................566, 593Gear Ranges...........................409
Special Additives.......................567
Autostick...............................414
Auxiliary Electrical Outlet (Power Outlet)........259
Auxiliary Power Outlet.....................259
Axle Fluid..............................593
Battery.................................540
Keyless Transmitter Replacement (RKE)........26
Belts, Seat...............................109
Blind Spot Monitoring......................132
Body Mechanism Lubrication.................546
B-Pillar Location..........................443
Brake Assist System.......................427
Brake Control System, Electronic..............426
Brake Fluid..........................563, 593
Brake System.........................425, 562
Anti-Lock (ABS).....................425, 426
Fluid Check...........................563
10
INDEX 615

Master Cylinder........................563
Parking..............................423
Warning Light.........................286
Brake/Transmission Interlock.................405
Bulb Replacement......................583, 585
Bulbs, Light.............................111
Camera, Rear............................237
Capacities, Fluid..........................591
Caps, Filler
Oil (Engine)........................533, 534
Radiator (Coolant Pressure)................560
Carbon Monoxide Warning...............108, 474
Cargo Area Cover.........................272
Cargo Area Features.......................270
Cargo Compartment.......................270
Light................................271
Cargo Light.............................271
Cargo Tie-Downs.........................274Car Washes.............................569
Cellular Phone...........................364
Center High Mounted Stop Light..............590
Certification Label.........................479
Chains, Tire.............................460
Chart, Tire Sizing.........................437
Check Engine Light (Malfunction Indicator Light) . .528
Checking Your Vehicle For Safety..............107
Checks, Safety...........................107
Child Restraint............................82
Child Restraints
Booster Seats...........................87
Child Restraints.........................82
Child Seat Installation....................101
How To Stow An Unused ALR Seat Belt........98
Infants And Child Restraints................85
Install A LATCH-Compatible Child Restraint....97
Installing Child Restraints Using The Vehicle Seat
Belt..................................99
616 INDEX

Fails To Start..........................402
Flooded, Starting.......................402
Fuel Requirements...................471, 591
Jump Starting..........................514
Oil ...........................532, 591, 592
Oil Change Interval......................532
Oil Filler Cap.......................533, 534
Oil Filter.............................535
Oil Selection.......................533, 591
Oil Synthetic..........................534
Overheating...........................500
Starting..............................399
Temperature Gauge......................286
Engine Oil Viscosity....................533, 534
Enhanced Accident Response Feature............78
Entry System, Illuminated....................22
Ethanol................................471
Event Data Recorder........................81
Exhaust Gas Caution...................108, 474Exhaust System.......................108, 554
Exterior Lights...........................111
Filters
Air Cleaner...........................535
Air Conditioning.................377, 536, 542
Engine Oil.........................535, 592
Engine Oil Disposal.....................534
Flashers................................500
Hazard Warning........................500
Turn Signal..................111,286, 587, 588
Flooded Engine Starting....................402
Fluid, Brake.............................593
Fluid Capacities..........................591
Fluid Leaks.............................112
Fluid Level Checks
Brake................................563
Cooling System.........................556
Engine Oil............................532
10
INDEX 619

Cargo ...............................271
Center Mounted Stop....................590
Daytime Running.......................167
Dimmer Switch, Headlight.................164
Exterior..............................111
Fog..............................286, 587
Hazard Warning Flasher..................500
Headlights.........................585, 586
Headlights On With Wipers................166
High Beam Indicator.....................286
Illuminated Entry........................22
Malfunction Indicator (Check Engine).........286
Map Reading..........................172
Passing..............................175
Reading...........................172, 240
Rear Servicing.........................588
Rear Tail Lamps........................588
Seat Belt Reminder......................286
Security Alarm.........................286Service...............................585
Service Engine Soon (Malfunction Indicator). . . .286
Side Marker...........................588
Tire Pressure Monitoring (TPMS)............286
Traction Control........................433
Turn Signal..................111,164, 587, 588
Vanity Mirror..........................131
Loading Vehicle..........................479
Tires ................................443
Locks..................................31
Automatic Door.........................34
Child Protection.........................34
Door.................................31
Power Door............................33
Lubrication, Body.........................546
Lug Nuts...............................501
Maintenance Free Battery....................540
Maintenance Procedures....................531
10
INDEX 623

Maintenance Schedule...................596, 598
Malfunction Indicator Light (Check Engine) . . .286, 528
Manual, Service..........................610
Memory Feature (Memory Seat)...............158
Memory Seat............................158
Memory Seats And Radio...................158
Methanol...............................471
Mirrors................................121
Electric Powered........................129
Electric Remote.........................129
Exterior Folding........................128
Heated...............................130
Outside..............................128
Rearview.............................121
Vanity...............................131
Modifications/Alterations, Vehicle...............9
Monitor, Tire Pressure System................463
MOPAR® Parts.......................530, 609
MTBE/ETBE............................471Multi-Function Control Lever.................164
Occupant Restraints........................49
Octane Rating, Gasoline (Fuel)................471
Odometer...............................286
Trip .................................286
Oil, Engine.......................299, 532, 592
Capacity.............................591
Change Interval........................532
Checking.............................532
Disposal..............................534
Filter.............................535, 592
Filter Disposal.........................534
Identification Logo......................533
Materials Added To......................534
Recommendation....................533, 591
Synthetic.............................534
Viscosity......................
.533, 534, 591
Oil Filter, Change.........................535
624 INDEX