2016 JEEP GRAND CHEROKEE service indicator

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.
Onboard Diagnostic System (OBD II)
Cybersecurity
Your vehicle is required to have an Onboard Diagnostic
system (OBD II) and a connection port to allow access to
information related to the performance of your emissions
controls. Authorized service technicians may need to
610 MAINTAINING YOUR VEHICLE

access this information to assist with the diagnosis and
service of your vehicle and emissions system.
WARNING!
•ONLY an authorized service technician should con-
nect equipment to the OBD II connection port in
order to diagnose or service your vehicle.
• If unauthorized equipment is connected to the
OBD II connection port, such as a driver-behavior
tracking device, it may:
• Be possible that vehicle systems, including
safety related systems, could be impaired or a
loss of vehicle control could occur that may result
in an accident involving serious injury or death.
• Access, or allow others to access, information
stored in your vehicle systems, including per-
sonal information. For further information, refer to “Privacy Practices — If
Equipped With Uconnect 8.4 Radio” and “Uconnect
CyberSecurity” in “All About Uconnect Access” in your
Owner ’s Manual Radio Supplement and “Cybersecurity”
in “Understanding Your Instrument Panel”.
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
7
MAINTAINING YOUR VEHICLE 611

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 donot 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 is not readyand you should
not proceed 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 is readyand you can proceed
to the I/M station.
If your OBD II system is not ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your
vehicle as you normally would in order for your OBD II
system to update. A recheck with the above test routine
may then indicate that the system is now ready.
612 MAINTAINING YOUR VEHICLE

MAINTENANCE SCHEDULE
The Scheduled Maintenance services listed in this
manual must be done at the times or mileages specified
to protect your vehicle warranty and ensure the best
vehicle performance and reliability. More frequent main-
tenance may be needed for vehicles in severe operating
conditions, such as dusty areas and very short trip
driving. Inspection and service should also be done
anytime a malfunction is suspected.
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
The Driver Information Display (DID) will display an
“Oil Change Required” message and a single chime will
sound, indicating that an oil change is necessary.Based on engine operation conditions, the oil change
indicator message will illuminate. This means that ser-
vice is required for your vehicle. Have your vehicle
serviced as soon as possible, within the next 500 miles
(805 km).
NOTE:
•
The oil change indicator message will not monitor the
time since the last oil change. Change your vehicle’s oil
if it has been six months since your last oil change,
even if the oil change indicator message is NOT
illuminated.
• 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 six months, which-
ever comes first.
680 MAINTENANCE SCHEDULES

Lead Free Gasoline....................... .555
Leaks, Fluid .............................113
Life Of Tires ............................ .543
Liftgate .................................46
Liftgate Window Wiper/Washer ...............279
Light Bulbs ..............................113
Lights ..............................113,168
AirBag.........................79, 111, 294
Automatic Headlights ....................170
Back-Up ............................. .672
Brake Assist Warning ....................511
Brake Warning ........................ .295
Bulb Replacement ...................... .669
Cargo .............................. .274
Center Mounted Stop ....................674
Cruise ........................... .317, 321
Daytime Running ...................... .171
Dimmer Switch, Headlight .................168
Engine Temperature Warning ...............298Exterior
..............................113
Fog ................................ .671
Hazard Warning Flasher ..................582
Headlights ........................ .669, 670
Headlights On With Wipers ................170
Hill Descent Control Indicator ..............515
Illuminated Entry ........................23
Low Fuel ............................ .312
Malfunction Indicator (Check Engine) .........305
Map Reading ......................... .175
Park ............................... .315
Passing ............................. .178
Reading .......................... .175, 248
Rear Servicing ........................ .672
Rear Tail Lamps ....................... .672
Seat Belt Reminder ..................... .293
Security Alarm ........................ .297
Service .............................. .669
Side Marker .......................... .672
10
INDEX 709

Tire Pressure Monitoring (TPMS)............308
Traction Control ........................511
Turn Signal ..............113, 168, 316, 670, 672
Vanity Mirror ......................... .133
Warning (Instrument Cluster Description) . . .298, 316
Loading Vehicle ......................... .563
Tires ............................... .528
Load Shed Battery Saver Mode ..................... .342
Battery Saver On ...................... .342
Electrical Load Reduction .................342
Intelligent Battery Sensor ..................342
Locks ..................................32
Automatic Door .........................35
Child Protection .........................35
Door .................................32
Power Door ............................34 Lubrication, Body
........................ .629
Lug Nuts .............................. .583
Maintenance Free Battery ....................623
Maintenance Procedures ....................614
Maintenance Schedule ...................680, 682
Malfunction Indicator Light (Check Engine) . . .305, 611
Manual, Service ......................... .694
Memory Feature (Memory Seat) ...............162
Memory Seat ........................... .162
Memory Seats And Radio ...................162
Methanol .............................. .556
Mirrors ............................... .122
Electric Powered ....................... .131
Electric Remote ........................ .131
Exterior Folding ....................... .130
Heated .............................. .132
710 INDEX

Trailer Towing Guide...................... .570
Trailer Weight ........................... .570
Transfer Case ........................... .648
Fluid ............................... .677
Maintenance .......................... .648
Transmission ........................... .471
Automatic ........................ .471, 649
Fluid ............................... .677
Maintenance .......................... .649
Shifting ............................. .468
Transmitter Battery Service (Remote Keyless Entry) . .26
Transmitter, Garage Door Opener (HomeLink) .....250
Transmitter Programming (Remote Keyless Entry). .23, 26
Transmitter, Remote Keyless Entry (RKE) .........23
Transporting Pets ........................ .107
Tread Wear Indicators ..................... .542
Turn Signals ..................... .316, 670, 672Uconnect
Operation ............................ .400
Screen Activated Features ..................25
Uconnect Settings ........................25
Uconnect 8.4A/8.4AN Voice Recognition Additional Information ...................457
Do Not Disturb ....................... .456
Siri Eyes Free ......................... .455
Uconnect Access Vehicle Health Alert .....................449
Uconnect Settings ...................... .24, 25
Customer Programmable Features .......35, 37, 46
Passive Entry Programming ............35, 37, 46
Uconnect Settings ........................46
Uconnect Voice Command ...................438
Uniform Tire Quality Grades .................695
Universal Transmitter ..................... .250
Unleaded Gasoline ....................... .555
718 INDEX