2018 JEEP GRAND CHEROKEE check engine

These effects can be reduced by timely rota-
tion of tires. The benefits of rotation are
especially worthwhile with aggressive tread
designs such as those on On/Off-Road type
tires. Rotation will increase tread life, help to
maintain mud, snow, and wet traction levels,
and contribute to a smooth, quiet ride.
Refer to the “Maintenance Plan” for the
proper maintenance intervals. More frequent
rotation is permissible if desired. The reasons
for any rapid or unusual wear should be
corrected prior to rotation being performed.
NOTE:
The premium Tire Pressure Monitor System
will automatically locate the pressure values
displayed in the correct vehicle position fol-
lowing a tire rotation.
The suggested rotation method is the
“rearward-cross” shown in the following dia-
gram.
STORING THE VEHICLE
If the vehicle should remain stationary for
more than a month, observe the following
precautions:
• Park your vehicle in a covered, dry and
possibly airy location the windows open
slightly.
• Check that the Electric Park Brake is not
engaged.
• Disconnect the negative (-) terminal from
the battery post and be sure that the battery
is fully charged. During storage check bat-
tery charge quarterly.• If you do not disconnect the battery from
the electrical system, check the battery
charge every 30 days.
• Clean and protect the painted parts by
applying protective waxes.
• Clean and protect polished metal parts by
applying protective waxes.
• Apply talcum powder to the front and rear
wiper blades and leave raised from the
glass.
• Cover the vehicle with an appropriate cover
taking care not to damage the painted sur-
face by dragging across dirty surfaces. Do
not use plastic sheeting which will not allow
the evaporation of moisture present on the
surface of the vehicle.
• Inflate the tires at a pressure of +7.25 psi
(+0.5 bar) higher than recommended on
the tire placard and check it periodically.
• Do not drain the engine cooling system.
• Whenever you leave the vehicle is station-
ary for two weeks or more, run idle the
engine for approximately five minutes, with
the air conditioning system on and high fan
speed. This will ensure a proper lubrication
Tire Rotation
265

nuts/bolts should be torqued using a properly
calibrated torque wrench using a high quality
six sided (hex) deep wall socket.
Torque Specifications
Base Model Vehicle
Lug Nut/Bolt
Torque**Lug Nut/Bolt
SizeLug Nut/Bolt
Socket Size
130 Ft-Lbs
(176 N·m)M14 x 1.50 22 mm
SRT Model Vehicle
Lug Nut/Bolt
Torque**Lug Nut/Bolt
SizeLug Nut/Bolt
Socket Size
110 Ft-Lbs
(149 N·m)M14 x 1.50 22 mm
**Use only your authorized dealer recom-
mended lug nuts/bolts and clean or remove
any dirt or oil before tightening.
Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion
or loose particles.Tighten the lug nuts/bolts in a star pattern
until each nut/bolt has been tightened twice.
Ensure that the socket is fully engaged on the
lug nut/bolt (do not insert it half way).
NOTE:
If in doubt about the correct tightness, have
them checked with a torque wrench by your
authorized dealer or service station.
After 25 miles (40 km), check the lug nut/
bolt torque to be sure that all the lug nuts/
bolts are properly seated against the wheel.
WARNING!
To avoid the risk of forcing the vehicle off
the jack, do not tighten the lug nuts fully
until the vehicle has been lowered. Failure
to follow this warning may result in per-
sonal injury.
FUEL REQUIREMENTS —
GASOLINE ENGINES
3.6L Engine
These engines are designed to meet all emis-
sions regulations and provide excellent fuel
economy and performance when using high-
quality unleaded gasoline with a minimum
Research Octane Number (RON) of 91.
Light spark knock at low engine speeds is not
harmful to your engine. However, continued
heavy spark knock at high speeds can cause
damage, and immediate service is required.
Besides using unleaded gasoline with the
proper octane rating, gasolines that contain
detergents, corrosion and stability additives
Torque Pattern
271

• If you are using the built-in Uconnect navi-
gation system, and you try and start a new
route using CarPlay, via voice or any other
method, a pop-up appears asking if you
would like to switch from Uconnect naviga-
tion to iPhone navigation. A pop-up also
appears, asking if you’d like to switch, if
CarPlay navigation is currently in use and
you attempt to launch a built-in Uconnect
route. Selecting “Yes” switches the naviga-
tion type to the newly used method of
navigation and a route will be planned for
the new destination. If “No” is selected the
navigation type remains unchanged.Apps
To use an app that is compatible with Car-
Play, you must have the compatible app al-
ready downloaded to your iPhone and you
must also be signed in. Refer to http://
www.apple.com/ios/carplay/ to see the latest
list of available apps for CarPlay.
Apps — If Equipped
To access Apps, press the “Uconnect Apps”
button on the touchscreen to browse the list
of applications:
• EcoDrive
• MyCar
• TuneIn
• Deezer
• Reuters
• Twitter
• Facebook Check-In
• Apple CarPlay
• Android Auto
• TomTom Live Services, and many more.
UCONNECT SETTINGS
The Uconnect system allows you to access
Customer Programmable feature settings
such as Display, Voice, Clock, Safety & Driv-
ing Assistance, Lights, Doors & Locks,
Auto-On Comfort, Engine Off Options, Sus-
pension, Compass Settings, Audio, Phone/
Bluetooth, Radio Setup, Restore Settings,
Clear Personal Data, and System Information
through buttons on the touchscreen.
Push the SETTINGS button (Uconnect 4), or
press the “Apps” button (Uconnect 4C/4C
NAV) located near the bottom of the touch-
screen, then press the “Settings” button on
the touchscreen to access the Settings
screen. When making a selection, scroll up or
down until the preferred setting is high-
lighted, then press the preferred setting until
a check-mark appears next to the setting,
showing that setting has been selected. The
following feature settings are available:
• Display • Engine Off Options
• Units • Camera
• Voice • Suspension
Navigation Pop-Up
MULTIMEDIA
308

Accessories..................283
Mopar...................283
Adaptive Cruise Control (ACC) (Cruise
Control)..................165
Off .................166, 168
On..................166, 168
Adding Fuel..............177, 179
Additives, Fuel................273
AirBag ....................110
Air Bag Operation............112
Air Bag Warning Light.........109
Driver Knee Air Bag...........112
Enhanced Accident Response. . . .116
Enhanced Accident Response. . . .228
Event Data Recorder (EDR)......228
Front Air Bag..............110
If Deployment Occurs.........116
Knee Impact Bolsters.........112
Maintaining Your Air Bag System . .117
Maintenance...............117
Redundant Air Bag Warning Light . .110
Side Air Bags..............112
Transporting Pets............130
Air Bag Light...........66, 109, 132
Air Conditioner Maintenance.......249Air Conditioner Refrigerant........249
Air Conditioner System...........249
Air Conditioning Filter.........48, 249
Air Conditioning, Operating Tips......48
Air Conditioning System...........47
Air Pressure
Tires....................256
Alarm
Arm The System...........18, 19
Disarm The System............18
Rearming The System..........19
Security Alarm..............69
Alarm (Security Alarm).........17, 19
Alarm System (Security Alarm).......17
Antifreeze (Engine Coolant). . . .278, 279
Anti-Lock Brake System (ABS).......80
Anti-Lock Warning Light
...........70
Arming System (Security Alarm)
......17
Assist, Hill Start................82
Audio Jack..................309
Auto Down Power Windows.........49
Automatic Door Locks............24
Automatic High Beams...........35
Automatic Temperature Control (ATC) . . .47
Automatic Transmission..........147Adding Fluid..............282
Fluid Type................282
Auto Up Power Windows...........49
Axle Lubrication...............282
Back-Up...................176
Back-Up Camera..............176
Battery..................67, 248
Charging System Light..........67
Belts, Seat..................131
Blind Spot Monitoring............92
Brake Assist System.............81
Brake Control System, Electronic.....81
Brake Fluid..................282
Brake System
Fluid Check...............282
Warning Light...............66
Brake/Transmission Interlock.......146
Break-In Recommendations, New
Vehicle...............143, 144
Bulb Replacement.............198
Bulbs, Light.................133
Camera....................176
Capacities, Fluid...........278, 279
INDEX
357

Caps, Filler
Fuel....................220
Oil (Engine)...............242
Carbon Monoxide Warning.....131, 275
Car Washes..................266
Chains, Tire..............263, 264
Changing A Flat Tire............255
Checking Your Vehicle For Safety. . . .131
Checks, Safety................131
Child Restraints
How To Stow An Unused ALR Seat
Belt....................129
Child Safety Locks..............24
Clean Air Gasoline.............273
Cleaning
Wheels..................262
Climate Control................40
Manual...................40
Compact Spare Tire.............261
Computer, Trip/Travel.............66
Cooling System...............254
Coolant Capacity........278, 279
Inspection................255
Selection Of Coolant (Antifreeze).278, 279
Cruise Light................74, 76
Customer Assistance............340
Customer Programmable Features. . . .308Cybersecurity.................287
Daytime Running Lights...........35
Dealer Service................248
Defroster, Windshield............132
Diagnostic System, Onboard........77
Diesel Fuel..................275
Diesel Fuel Requirements.........275
Bulk Storage Of.............181
Dipsticks
Oil (Engine)...............247
Disturb....................327
Do Not Disturb................335
Door Ajar.................67, 69
Door Ajar Light..............67, 69
Door Locks, Automatic............24
DVD Player (Video Entertainment
System)..................310
Economy (Fuel) Mode...........146
Electric Brake Control System
Anti-Lock Brake System.........80
Electronic Roll Mitigation.....83, 86
Electronic Brake Control System......81
Electronic Speed Control (Cruise
Control)...............163, 164
Electronic Stability Control (ESC).....83Electronic Throttle Control Warning Light.68
Emergency, In Case Of
Freeing Vehicle When Stuck.....222
Hazard Warning Flasher........198
Jacking..................255
Jump Starting..............217
Tow Hooks................227
Engine..........242, 244, 245, 246
Break-In Recommendations . .143, 144
Checking Oil Level...........247
Compartment .242, 243, 244, 245, 246
Compartment Identification . .242, 243
Cooling..................254
Exhaust Gas Caution......
.131, 275
Fuel Requirements. . . .271, 278, 279
Identification..............246
Jump Starting..............217
Oil .................278, 279
Oil Filler Cap...............242
Oil Selection...........278, 279
Overheating...............220
Starting.................137
Enhanced Accident Response Feature.116, 228
Ethanol....................272
Exhaust Gas Cautions........131, 275
Exhaust System...............131
INDEX
358

Lap/Shoulder Belts.............102
Latches....................133
Lead Free Gasoline.............271
Leaks, Fluid.................133
Life Of Tires.................258
Liftgate..................54, 55
Liftgate Window Wiper/Washer.......39
Light Bulbs..................133
Lights.....................133
AirBag................66, 109
AirBag ..................132
Brake Assist Warning...........86
Brake Warning...............66
Bulb Replacement...........198
Cruise.................74, 76
Daytime Running............35
Dimmer Switch, Headlight.......34
Engine Temperature Warning.....68
Exterior..................133
Fog .....................36
Fog .....................73
Hazard Warning Flasher........198
Headlights On With Wipers.......36
Hill Descent Control Indicator.....88
Low Fuel..................71
Malfunction Indicator (Check Engine) .71
Park.....................74Passing..................36
Seat Belt Reminder...........69
Security Alarm..............69
Service..................198
Side Marker...............201
Tire Pressure Monitoring (TPMS)....72
Traction Control..............86
Turn Signal..........34, 75, 201
Turn Signals...............133
Warning (Instrument Cluster
Description)................68
Locks
Automatic Door..............24
Child Protection.............24
Lug Nuts...................270
Maintenance Free Battery.........248
Maintenance Schedule. . . .230, 234, 238
Malfunction Indicator Light (Check
Engine)
...................71
Marker Lights, Side
.............201
Memory Feature (Memory Seat)......24
Memory Seat..................24
Memory Seats And Radio..........24
Methanol...................272
Methanol Fuel................272
Mini-Trip Computer..............66Mirrors.....................32
Exterior Folding.............32
Heated...................33
Monitor, Tire Pressure System.......95
Mopar.....................283
Mopar Accessories.............283
Multi-Function Control Lever........34
Navigation...........316, 318, 320
New Vehicle Break-In Period.......143
Occupant Restraints.............99
Octane Rating, Gasoline (Fuel)......271
Oil, Engine
Capacity..............278, 279
Checking.................247
Dipstick.................247
Pressure Warning Light.........69
Recommendation........278, 279
Viscosity.............278, 279
Oil Pressure Light...............69
Onboard Diagnostic System.........77
Operating Precautions............77
Outlet
Power...................57
Overheating, Engine............220
INDEX
360