check engine light JEEP GRAND CHEROKEE 2023 Owner's Manual

TECHNICAL SPECIFICATIONS397
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 an 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 tightened.

Torque Pattern

FUEL REQUIREMENTS
While operating on gasoline with the required
octane number, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a heavy
knocking sound, see a dealer immediately. Use of
gasoline with an octane number lower than
recommended can cause engine failure and may
void the New Vehicle Limited Warranty.
Poor quality gasoline can cause problems such as
hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand of
gasoline before considering service for the vehicle.
2.0L ENGINE
This engine is designed to meet all
emissions requirements, and provide
satisfactory fuel economy and
performance, when using high-quality
unleaded regular gasoline having an octane rating
of 87, as specified by the (R+M)/2 method. The
use of 91 or higher octane premium gasoline will
allow these engines to operate to optimal
performance. This increase in performance is most
noticeable in hot weather or under heavy load
conditions, such as while towing.
3.6L ENGINE
Do not use E-85 flex fuel or ethanol blends greater
than 15% in this engine.
This engine is designed to meet all
emissions regulations and provide
optimum fuel economy and performance
when using high quality unleaded regular
gasoline having a posted octane number of 87 as
specified by the (R+M)/2 method. The use of
higher octane premium gasoline is not required, as
it will not provide any benefit over regular gasoline
in these engines.
5.7L ENGINE
Do not use E-85 flex fuel or ethanol blends greater
than 15% in this engine.
This engine is designed to meet all
emission regulations and provide
satisfactory fuel economy and
performance when using high-quality
unleaded gasoline having an octane range of 87 to
89 as specified by the (R+M)/2 method. The use of
89 octane plus gasoline is recommended for
optimum performance and fuel economy.
WARNING!
To avoid the risk of forcing the vehicle off the
jack, do not tighten the lug nuts/bolts fully until
the vehicle has been lowered. Failure to follow
this warning may result in personal injury.
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410 Anti-Lock Brake System (ABS)
............. 111, 248Anti-Lock Warning Light................................. 111Apps.............................................................. 233Arming System Security Alarm............................................. 26Assist, Hill Start............................................. 254Audio Systems (Radio)......................... 104, 203Auto Down Power Windows............................. 82Auto Hold............................................. 115, 125Automatic Folding Mirrors............................... 53Automatic Headlights...................................... 59Automatic High Beams.................................... 59Automatic Temperature Control (ATC)............. 72Automatic Transmission...................... 119, 127Adding Fluid.............................................. 351Fluid And Filter Change............................. 351Fluid Change............................................. 351Fluid Level Check...................................... 351Fluid Type........................................ 351, 402Special Additives....................................... 351Automatic Transmission Limp Home Mode... 129AutoPark........................................................ 120Autostick........................................................ 130Operation.................................................. 130AUX Cord.......................................................... 77Auxiliary Driving Systems............................... 258
Auxiliary Electrical Outlet (Power Outlet).......... 78Auxiliary Power Outlet...................................... 78Axle Fluid...................................................... 402
B
Battery................................................. 109, 338Charging System Light.............................. 109Keyless Key Fob Replacement.................... 19Battery Saver Feature...................................... 62Belts, Seat.................................................... 303Body Mechanism Lubrication....................... 343Bodywork...................................................... 392B-Pillar Location............................................ 379Brake Assist System..................................... 250Brake Control System, Electronic.................. 250Brake Fluid.......................................... 350, 402Brake System...................................... 350, 396Anti-Lock (ABS)......................................... 396Fluid Check............................................... 350Master Cylinder........................................ 350Parking..................................................... 123Warning Light........................................... 108Brake/Transmission Interlock...................... 127Bulb Replacement........................................ 374Bulbs, Light................................................... 305
C
Camera, Front............................................... 176Camera, Night Vision..................................... 177Camera, Rear....................................... 174, 181Camera, Rear Washer................................... 174Camera, Surround View................................ 181Capacities, Fluid............................................ 400Caps, FillerOil (Engine)............................................... 334Radiator (Coolant Pressure)..................... 348Car Washes................................................... 393Carbon Monoxide Warning................... 305, 306Care And Maintenance................................. 392Cargo Area Cover.............................................92Cargo Area Storage..........................................90Cargo Compartment.........................................90Cargo Tie-Downs..............................................91Cellular Phone............................................... 247Center Console, Front......................................75Center Console, Rear.......................................75Chains, Tire................................................... 389ChargingWireless.......................................................80Chart, Tire Sizing........................................... 375Check Engine Light
(Malfunction Indicator Light)......................... 118

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411
Checking Your Vehicle For Safety
.................. 303Checks, Safety............................................... 303Child Restraint............................................... 289Child Restraints Booster Seats............................................ 291Child Seat Installation............................... 300How To Stow An unused ALR Seat Belt..... 297Infant And Child Restraints....................... 290Locating The LATCH Anchorages............... 295Lower Anchors And Tethers For Children.. 292Older Children And Child Restraints..........291Seating Positions...................................... 292Child Safety Locks........................................... 31Clean Air Gasoline......................................... 398CleaningWheels...................................................... 388Climate Control................................................ 66Automatic.................................................... 66Rear............................................................ 69CNG And LP Fuel System Modifications......... 398Cold Weather Operation................................ 122Compact Spare Tire....................................... 386Contract, Service........................................... 405Cooling Pressure Cap (Radiator Cap).............348
Cooling System............................................. 346Adding Coolant (Antifreeze)...................... 347Coolant Level................................... 348, 349Cooling Capacity....................................... 400Disposal Of Used Coolant......................... 348Drain, Flush, And Refill............................. 347Inspection............................... 347, 348, 349Points To Remember................................ 349Pressure Cap............................................ 348Radiator Cap............................................ 348Selection Of Coolant(Antifreeze)......................... 347, 400, 401Corrosion Protection..................................... 392Cruise Control (Speed Control)..................... 142Cruise Light.......................................... 115, 116Customer Assistance.................................... 403Customer Programmable Features............... 204Cybersecurity................................................ 203
D
Daytime Running Lights................................... 58Defroster, Windshield................................... 304De-Icer, Remote Start...................................... 26De-Icer, Windshield.......................................... 66Diagnostic System, Onboard......................... 117Digital Instrument Cluster ¹.............................. 96
DipsticksOil (Engine)............................................... 337DisposalAntifreeze (Engine Coolant)...................... 348Do Not Use E-85 In Non-Flex Fuel Vehicles... 398Door Ajar....................................................... 109Door Locks................................................27, 31Child-Protection Door Lock — Rear Doors....31Doors...............................................................27Driver’s Seat Back Tilt......................................36Driving........................................................... 199Tips........................................................... 199DrowsyDriverDetection................................. 249
E
Electric Brake Control System....................... 250Anti-Lock Brake System............................ 248Electronic Roll Mitigation................. 251, 257Electric Parking Brake................................... 123Electrical Outlet, Auxiliary (Power Outlet).........78
Electronic Stability Control (ESC)... 111, 112, 251
Electronic Sway Bar Disconnect.................... 133Electronic Throttle Control Warning Light...... 109
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412 Emergency Freeing A Stuck Vehicle
............................. 325Hazard Warning Flashers.......................... 307Jump Starting............................................ 319Manual Park Release................................ 323Refueling................................................... 321Tow Hooks................................................. 328Towing A Disabled Vehicle......................... 326Emergency Braking........................................ 263Emergency, In Case OfJacking...................................................... 310Emission Control System Maintenance......... 118Engine........................................................... 334Air Cleaner................................................. 339Break-In Recommendations...................... 122Checking Oil Level..................................... 337Compartment......................... 334, 335, 336Compartment Identification... 334, 335, 336Coolant (Antifreeze)................................... 109Cooling...................................................... 346Exhaust Gas Caution....................... 305, 306Fails To Start............................................. 122Flooded, Starting....................................... 122Fuel Requirements.......................... 397, 400Jump Starting............................................ 319Oil.................................................... 338, 400
Oil Filler Cap............................................. 334Oil Filter.................................................... 339Oil Selection........................... 338, 400, 401Oil Synthetic............................................. 339Starting..................................................... 119Engine Oil Life Reset
b
............................... 100
Enhanced Accident Response Feature...287, 329
Ethanol......................................................... 398Exhaust Gas Cautions.......................... 305, 306Exhaust System................................... 305, 345Extend, Seats................................................... 43Exterior Lights............................... 57, 305, 374
F
FamCam System........................................... 177FiltersAir Cleaner................................................ 339Air Conditioning..................................73, 341Engine Oil................................................. 339Engine Oil Disposal................................... 339FireTV............................................................ 240FlashersTurn Signals.................................... 116, 305Flash-To-Pass................................................... 59Flooded Engine Starting................................ 122Fluid Capacities............................................ 400
Fluid Leaks.................................................... 305Fluid Level ChecksBrake........................................................ 350Engine Oil................................................. 337Fluids And Lubricants.................................... 402Fog Lights.............................................. 61, 115Fold-Flat Seats.................................................36Forward Collision Warning.......... 113, 115, 261Four Wheel Drive............... 113, 114, 131, 134Operation.................................................. 131Shifting..................................................... 114System...................................................... 131Four Wheel Drive Operation.......................... 131Freeing A Stuck Vehicle................................. 325Front And Rear ParkSense System............... 159Front Axle (Differential)................................. 351Front View Camera........................................ 176Fuel............................................................... 397Additives................................................... 398Clean Air................................................... 398Ethanol..................................................... 398Gasoline................................................... 397Materials Added....................................... 398Methanol.................................................. 398

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414 J
Jack Location
................................................. 311Jack Operation............................................... 315Jacking And Tire Changing
b
....................... 310Jacking And Tire Changing Instructions......... 311Jacking Instructions....................................... 315Jump Starting................................................ 319
K
Key Fob Arm The System
.......................................... 26Disarm The System..................................... 27Programming Additional Key Fobs.............. 21Key Fob Battery Service
(Remote Keyless Entry)................................... 19
Key Fob Programming (Remote Keyless Entry).. 21
Keyless Enter 'n Go™..................................... 119Passive Entry............................................... 29Passive Entry Programming......................... 29Keys................................................................. 18Replacement............................................... 21Sentry (Immobilizer).................................... 22
L
Lane Change Assist......................................... 61Lane Management System............................ 171Lap/Shoulder Belts....................................... 271Latches.......................................................... 305Lead Free Gasoline........................................ 397Leaks, Fluid................................................... 305
Life Of Tires................................................... 384Liftgate...................................................88, 110Adjustable Height........................................ 89Closing......................................................... 88Hands-Free.................................................. 89Opening....................................................... 88Liftgate Window Wiper/Washer....................... 66Light Bulbs.................................................... 305Lighted Cupholders.......................................... 76Lights............................................................ 305Air Bag.................................... 108, 277, 303Ambient....................................................... 62Ambient, Mutlicolor..................................... 63Automatic Headlights.................................. 59Brake Assist Warning............................... 252Brake Warning.......................................... 108Bulb Replacement.................................... 374Cruise.............................................. 115, 116Daytime Running......................................... 58Dimmer Switch............................................ 62Dimmer Switch, Headlight........................... 57Electric Power Steering............................. 109Electronic Stability Control............... 111, 112Exterior...............................................57, 305Fog.....................................................61, 115Hazard Warning Flasher........................... 307Headlights On With Wipers.......................... 60High Beam................................................ 117
High Beam/Low Beam Select......................59Hill Descent Control Indicator.......... 116, 253Interior.........................................................62Lights On Reminder.....................................61Low Fuel................................................... 112Malfunction Indicator (Check Engine)....... 112NEUTRAL.................................................. 115Night Vision.............................110, 113, 116Oil Temperature........................................ 110Park................................................... 59, 116Passing........................................................59Reading.......................................................62Seat Belt Reminder.................................. 110Security Alarm.......................................... 111SelecSpeed Control.................................. 117Service...................................................... 374Sport Mode............................................... 116StopStart.................................................. 116Sway Bar................................................... 115Sway Bar Fault.......................................... 113Traction Control........................................ 252Transmission Temperature....................... 110Turn Signals.............................. 61, 116, 305Vanity Mirror................................................50Load Shed Battery Saver Mode..................... 106Load Shed Battery Saver On......................... 106Load Shed Electrical Load Reduction........... 106Load Shed Intelligent Battery Sensor............ 106

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415
Loading Vehicle
............................................. 184Tires.......................................................... 379Locks Child Protection........................................... 31Manual........................................................ 27Power Door.................................................. 28Lubrication, Body........................................... 343Lug Nuts/Bolts.............................................. 396Luggage Carrier............................................... 93
M
Main Menu.................................................... 103Maintenance............................................ 84, 86Maintenance Free Battery............................. 338Maintenance Schedule.................................. 330Malfunction Indicator Light
(Check Engine).................................... 112, 118ManualService...................................................... 407MassageSeats........................................................... 44McIntosh........................................................ 233Memory Feature (Memory Seats).................... 34Memory Seat................................................... 34Memory Seats And Radio................................ 34Methanol....................................................... 398Methylcyclopentadienyl Manganese
Tricarbonyl (MMT) In Gasoline....................... 399
Mirrors............................................................. 49Automatic Dimming Rearview..................... 50Digital Rearview........................................... 50Exterior Folding............................................ 51Heated......................................................... 53Outside........................................................ 51Power.......................................................... 52Power Folding.............................................. 52Rearview.............................................49, 307Tilt Side Mirrors........................................... 53Vanity.......................................................... 50Modifications/AlterationsVehicle......................................................... 12Monitor, Tire Pressure System...................... 264Mopar Parts.................................................. 406Multi-Function Control Lever............................ 58
N
Navigation..................................................... 104Neutral.......................................................... 115New Vehicle Break-In Period......................... 122Night Vision Camera..................................... 177
O
Occupant Restraints..................................... 269Octane Rating, Gasoline (Fuel)..................... 397
Off Road Pages............................................. 245Accessory Gauges..................................... 246Pitch And Roll........................................... 246Selec Terrain............................................. 246Status Bar................................................. 245Suspension............................................... 247Vehicle Dynamics..................................... 246Off-Road Driving (Off-Pavement)................... 104Oil Change Indicator...................................... 100Reset........................................................ 100Oil Filter, Change........................................... 339Oil Filter, Selection........................................ 339Oil Pressure Light.......................................... 110Oil, Engine..................................................... 338Capacity.................................................... 400Checking................................................... 337Dipstick..................................................... 337Disposal.................................................... 339Filter......................................................... 339Filter Disposal........................................... 339Identification Logo.................................... 339Materials Added To................................... 339Pressure Warning Light............................. 110Recommendation............................ 338, 400Synthetic................................................... 339Viscosity.................................................... 400
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