check engine JEEP GLADIATOR 2023 Service Manual

TECHNICAL SPECIFICATIONS419
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 halfway).

Torque Patterns

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.
FUEL REQUIREMENTS — GASOLINE ENGINE
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 an authorized 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.
3.6L ENGINE
This engine is designed to meet all
emission regulations and provide
excellent 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 higher octane
premium gasoline will not provide any benefit over
regular gasoline in these engines.
REFORMULATED GASOLINE
Many areas of the country require the use of
cleaner-burning gasoline referred to as
“reformulated gasoline”. Reformulated gasoline contains oxygenates and are specifically blended
to reduce vehicle emissions and improve air
quality.
The use of reformulated gasoline is recommended.
Properly blended reformulated gasoline will
provide improved performance and durability of
engine and fuel system components.
MATERIALS ADDED TO FUEL
Besides using unleaded gasoline with the proper
octane rating, gasolines that contain detergents,
corrosion and stability additives are
recommended. Using gasolines that have these
additives will help improve fuel economy, reduce
emissions, and maintain vehicle performance.
Designated TOP TIER Detergent Gasoline
contains a higher level of detergents to
further aide in minimizing engine and
fuel system deposits. When available,
the usage of TOP TIER Detergent Gasoline is
recommended. Visit www.toptiergas.com for a list
of TOP TIER Detergent Gasoline retailers.
Indiscriminate use of fuel system cleaning agents
should be avoided. Many of these materials
intended for gum and varnish removal may contain
active solvents or similar ingredients. These can
harm fuel system gasket and diaphragm materials.
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.9

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INDEX
A
About Your Brakes......................................... 418Accessory Drive Belt Inspection..................... 372Adaptive Cruise Control (ACC)
(Cruise Control).............................................. 173Adding Engine Coolant (Antifreeze)............... 378Adding Fuel.......................................... 191, 192Additives, Fuel............................................... 419Advance Phone Connectivity......................... 252Air BagAir Bag Operation...................................... 308Air Bag Warning Light............. 132, 306, 309Enhanced Accident Response......... 317, 352Event Data Recorder (EDR)....................... 352Front Air Bag................................... 307, 309If Deployment Occurs................................ 316Knee Impact Bolsters................................ 314Maintaining Your Air Bag System.............. 317Maintenance............................................. 317Redundant Air Bag Warning Light.............307Transporting Pets...................................... 329Air Bag Light........................................ 306, 329Air Cleaner, Engine (Engine Air Cleaner
Filter)............................................................. 366Air Conditioner Maintenance......................... 372Air Conditioner Refrigerant.................. 372, 373
Air Conditioner System................................. 372Air Conditioning Filter..............................68, 373Air Conditioning System................................... 67Air Conditioning, Operating Tips....................... 67Air Filter........................................................ 366Air PressureTires......................................................... 402AlarmArm The System.......................................... 23Disarm The System..................................... 23Security Alarm............................................. 23Alterations/ModificationsVehicle......................................................... 11Android Auto........................................ 254, 255Android Auto™
S
........................................ 254Antifreeze (Engine Coolant)................. 377, 423Disposal................................................... 378Anti-Lock Brake System (ABS)............. 135, 279Apple CarPlay....................................... 254, 257Apple CarPlay®
S
...................................... 256Assist, Hill Start............................................. 283Audio Settings............................................... 240Audio Systems (Radio).................................. 214Auto Down Power Windows............................. 81Automatic Dimming Mirror............................... 51Automatic Door Locks...................................... 27
Automatic Headlights.......................................58Automatic High Beams.....................................58Automatic Temperature Control (ATC)..............67Automatic Transmission................................ 157Adding Fluid.............................................. 382Autostick................................................... 160Fluid And Filter Change............................. 382Fluid Change............................................. 382Fluid Level Check............................. 381, 382Fluid Type........................................ 382, 426Gear Ranges............................................. 157Special Additives...................................... 381Automatic Transmission Limp Home Mode... 159AutoPark....................................................... 145AUX..................................................................71Auxiliary Electrical Outlet (Power Outlet)..........77Auxiliary Power Outlet......................................77Auxiliary Switches............................................79Axle Fluid....................................................... 426Axle Lock.............................................. 165, 166
B
Battery.......................................................... 364Charging System Light.............................. 133Keyless Key Fob Replacement....................16Bed Lights........................................................59
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434
Belts, Seat
..................................................... 329Blind Spot Monitoring.................................... 287Bluetooth Connecting To A Particular Mobile Phone Or Audio Device After Pairing
................248Body Mechanism Lubrication........................ 374B-Pillar Location............................................. 400Brake Assist System...................................... 280Brake Control System.................................... 280Brake Fluid.......................................... 380, 426Brake System...................................... 380, 418Anti-Lock (ABS).......................................... 418Fluid Check............................................... 380Master Cylinder......................................... 380Parking...................................................... 152Warning Light............................................ 132Brake/Transmission Interlock....................... 157Bulb Replacement............................... 392, 393Bulbs, Light.......................................... 330, 392Bumper End Cap Removal............................. 208
C
Camera, Rear................................................ 189Capacities, Fluid............................................ 423Caps, FillerFuel........................................................... 191Oil (Engine)................................................ 362Radiator (Coolant Pressure)...................... 378Car Washes................................................... 412Carbon Monoxide Warning............................ 331
Carpet Safety Information............................. 414Carpeting...................................................... 415CD................................................................. 242Cellular Phone.............................................. 276Center High Mounted Stop Light................... 395Certification Label......................................... 195Chains, Tire................................................... 408Charge Air Cooler.......................................... 379Chart, Tire Sizing........................................... 397Checking Your Vehicle For Safety................. 328Checks, Safety.............................................. 328Child Restraint.............................................. 318Child RestraintsBooster Seats........................................... 321Child Seat Installation.............................. 327How To Stow An unused ALR Seat Belt.... 325Infant And Child Restraints....................... 320Locating The LATCH Anchorages.............. 324Lower Anchors And Tethers For Children.. 322Older Children And Child Restraints......... 320Seating Positions...................................... 321Clean Air Gasoline......................................... 419CleaningWheels..................................................... 407Climate Control................................................ 61Automatic.................................................... 62Manual........................................................ 64CNG And LP Fuel System Modifications........ 420Cold Weather Operation............................... 146Compact Spare Tire...................................... 406
Connected Services...................................... 258Connected Services FAQ............................... 272Connected Services Features....................... 261Connected Services, Getting Started............ 260Connected Services, Introduction................. 258ConnectorUCI...............................................................71Universal Consumer Interface (UCI).............71Console............................................................69Floor............................................................69Contract, Service........................................... 430Controls........................................................ 234Cooling Pressure Cap (Radiator Cap)............ 378Cooling System............................................. 377Adding Coolant (Antifreeze)...................... 378Coolant Level............................................ 379Cooling Capacity....................................... 423Disposal Of Used Coolant......................... 378Drain, Flush, And Refill............................. 377Inspection........................................ 377, 379Points To Remember................................ 379Pressure Cap............................................ 378Radiator Cap............................................. 378Selection Of Coolant (Antifreeze)......................... 377, 423, 424Corrosion Protection..................................... 411Cruise Control (Speed
Control)............................. 139, 140, 141, 173Customer Assistance.................................... 428Cybersecurity................................................ 214

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D
Daytime Running Lights
................................... 57Defroster, Windshield.................................... 329De-Icer, Remote Start...................................... 22Deleting A Phone........................................... 248Diesel Exhaust Fluid............................ 193, 371Diesel Fuel..................................................... 421Diesel Fuel Requirements............................. 421Bulk Storage Of......................................... 193Diesel Fuel System, Re-Priming..................... 370Dimmer Control Switch.................................... 60Dimmer Switch Headlight..................................................... 57DipsticksOil (Engine)................................................ 364Disable Vehicle Towing.................................. 350Disc Drive...................................................... 242Disconnecting................................................ 248DisposalAntifreeze (Engine Coolant)....................... 378Disturb........................................................... 251Do Not Use E-85 In Non-Flex Fuel Vehicles... 420Door Ajar Light............................................... 133Door Frame................................................... 104Installation................................................ 104Removal.................................................... 104Door LocksAutomatic.................................................... 27Door Off Mirror Kit........................................... 34
Doors............................................................... 24Removal............................................... 28, 32Removal, Front............................................ 28Removal, Rear............................................. 32Drag & Drop.................................................. 232Draining Fuel/Water Separator Filter............ 368Driver Memory Presets................................. 240Driver’s Seat Back Tilt............................... 43, 44Driving.......................................................... 207Driving Tips................................................... 207
E
Electric Brake Control System....................... 280Anti-Lock Brake System............................ 279Electronic Roll Mitigation................. 280, 286Electric Remote Mirrors................................... 52Electrical Outlet, Auxiliary (Power Outlet)......... 77Electrical Power Outlets................................... 77Electronic Speed Control (Cruise Control)..... 173Electronic Stability Control
(ESC)........................................... 135, 136, 281EmergencyIn Case Of................................................. 332SOS Emergency Call................................. 332Emergency Brake.......................................... 152Emergency Braking....................................... 293Emergency Gas Can Refueling...................... 346
Emergency, In Case OfJacking...................................................... 335Jump Starting........................................... 343Tow Hooks................................................ 351Engine........................................................... 362Air Cleaner................................................ 366Block Heater............................................. 148Break-In Recommendations..................... 151Checking Oil Level.................................... 364Compartment.................................. 362, 363Compartment Identification............. 362, 363Coolant (Antifreeze).................................. 424Cooling...................................................... 377Exhaust Gas Caution................................ 331Fails To Start............................................. 147Flooded, Starting...................................... 147Fuel Requirements................................... 423Idling......................................................... 150Jump Starting........................................... 343Oil...........................................365, 423, 424Oil Filler Cap............................................. 362Oil Filter.................................................... 366Oil Reset................................................... 122Oil Selection..................................... 365, 423Oil Synthetic.............................................. 366Overheating.............................................. 347Starting..................................................... 144Enhanced Accident Response
Feature................................................ 317, 352
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Ethanol
.......................................................... 420Exhaust Gas Caution..................................... 331Exhaust Gas Cautions.................................... 331Exhaust System................................... 331, 376Exterior Lights......................................... 56, 330
F
Fabric Care.................................................... 413Fabric Top...................................................... 413Family Alerts.................................................. 271Fastener Bin.................................................... 70Filters Air Cleaner................................................. 366Air Conditioning.................................. 68, 373Engine Fuel............................................... 368Engine Oil........................................ 366, 424Engine Oil Disposal................................... 366FlashersHazard Warning......................................... 332Turn Signal................................................ 330Turn Signals.................................... 394, 395Flash-To-Pass.................................................. 58Flooded Engine Starting................................ 147Fluid Capacities............................................. 423Fluid Leaks.................................................... 330Fluid LevelManual Transmission................................ 381Fluid Level Checks......................................... 380Brake........................................................ 380Engine Oil.................................................. 364
Fluid, Brake.................................................. 426Fog Lights..................................... 58, 140, 394Fog Lights, Service........................................ 394Fold-Flat Seats................................................. 43Folding Rear Seats........................................... 44Folding Windshield....................................... 106Forward Collision Warning................... 139, 291Four Wheel Drive.......................................... 161Operation................................................. 161Shifting..................................................... 161System..................................................... 161Four Wheel Drive Operation.......................... 163Four-Way Hazard Flasher.............................. 332Freedom Panels............................................... 97Freeing A Stuck Vehicle................................ 349Front Axle (Differential)................................. 380Front Door Removal
S
.................................. 28Front View Camera....................................... 190Fuel...................................................... 419, 421Adding............................................. 191, 192Additives................................................... 419Clean Air................................................... 419Ethanol..................................................... 420Filler Cap (Gas Cap)......................... 136, 191Filter......................................................... 368Gasoline................................................... 419Materials Added....................................... 419Methanol.................................................. 420Octane Rating.................................. 419, 424Requirements.................................. 421, 423
Specifications.................................. 421, 424Tank Capacity........................................... 423Fuel Filter Replacement................................ 369Fuel System Cautions................................... 420Fueling................................................. 191, 192Fuses............................................................ 382
G
Garage Door Opener (HomeLink).....................52Gas Cap (Fuel Filler Cap)...................... 191, 192Gasoline Instrument Clusters
S
................. 118Gasoline, (Fuel)............................................. 419Gasoline, Clean Air........................................ 419Gasoline, Reformulated................................ 419GaugesVoltage...................................................... 149Gear Ranges........................................ 154, 157Glass Cleaning.............................................. 417Gross Vehicle Weight Rating......................... 197GVWR............................................................ 196
H
Half-Door Installation.......................................35Half-Doors — If Equipped
S
...........................36Hard Top..........................................................82Hard Top Front Panel(s) Removal
S
..............95Hazard Warning Flashers.............................. 332Head Restraints...............................................48

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Leaks, Fluid
................................................... 330Leather Surfaces........................................... 417Life Of Tires................................................... 404Light Bulbs........................................... 330, 392Lights............................................................. 3304WD.......................................................... 1384WD Auto.................................................. 1394WD Low................................................... 1384WD Part Time.......................................... 138AdBlue UREA Injection System Failure...... 138Air Bag.................................... 132, 306, 329Automatic Headlights.................................. 58Axle Locker Fault....................................... 138Bed.............................................................. 59Brake Assist Warning................................ 283Brake Warning.......................................... 132Bulb Replacement..................................... 393Cargo......................................................... 139Center Mounted Stop................................ 395Daytime Running......................................... 57Dimmer Switch, Headlight........................... 57Electronic Throttle Control......................... 133Engine Check Malfunction Indicator..........136Engine Coolant Temperature..................... 133Exterior............................................... 56, 330Fog............................................58, 140, 394Front And Rear Axle Lock.......................... 138Hazard Warning Flasher............................ 332Headlight Switch......................................... 56Headlights.......................................... 56, 393
High Beam..........................................57, 141High Beam/Low Beam Select...................... 57Hood Open............................................... 133Instrument Cluster....................................... 56Interior......................................................... 59Lights On Reminder..................................... 58Low Diesel Exhaust Emissions Additive.... 139Low Fuel................................................... 136Neutral..................................................... 139Off Road................................................... 139Oil Pressure.............................................. 134Oil Temperature........................................ 134Passing........................................................ 58Rear Axle Lock.......................................... 138Rear Servicing.......................................... 395Rear Tail Lamps....................................... 395Seat Belt Reminder.................................. 134Security Alarm.......................................... 135Service..................................................... 393Service 4WD............................................. 136Service Forward Collision......................... 137Side Marker.............................................. 395StopStart.................................................. 140Sway Bar Fault.......................................... 137Tire Pressure Monitoring (TPMS)..... 137, 294Traction Control........................................ 283Transmission Temperature....................... 134Turn Signal............................................... 330Turn Signals........................... 140, 394, 395Two Wheel Drive High............................... 140
Load Shed Battery Saver Mode..................... 127Loading Vehicle............................................. 195Tires.......................................................... 400Locking Axle.................................................. 165, 166LocksAutomatic Door............................................27Child Protection...........................................27Power Door..................................................25Low Tire Pressure System............................. 294Lowering The Soft Top
S
........................83, 86Lubrication, Body.......................................... 374Lug Nuts/Bolts.............................................. 418Luggage Carrier............................................. 115
M
Maintenance Free Battery............................ 364Maintenance Schedule........................ 353, 357ManualPark Release............................................ 348Service...................................................... 431Manual Transmission........................... 153, 381Fluid Level Check...................................... 381Lubricant Selection.......................... 381, 426Shift Speeds............................................. 154Media Mode.................................................. 242Methanol....................................................... 420Methylcyclopentadienyl Manganese
Tricarbonyl (MMT) In Gasoline...................... 420

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Mirrors
............................................................. 50Automatic Dimming..................................... 51Electric Powered......................................... 52Electric Remote........................................... 52Heated........................................................ 52Outside........................................................ 51Rearview..................................................... 50Vanity.......................................................... 51Mobile App.................................................... 260Modifications/Alterations Vehicle........................................................ 11Monitor, Tire Pressure System....................... 294Mopar Parts................................................... 431
N
New Vehicle Break-In Period................ 151, 152
O
Occupant Restraints...................................... 299Octane Rating, Gasoline (Fuel)............ 419, 424Off Road Pages.............................................. 277Accessory Gauges..................................... 278Drivetrain.................................................. 278Pitch And Roll............................................ 278Status Bar................................................. 277Off Road+...................................................... 168Oil Filter, Change........................................... 366Oil Filter, Selection......................................... 366Oil Life Reset — If Equipped
S
.................... 122Oil Reset........................................................ 122
Oil, Engine............................................ 365, 424Capacity.................................................... 423Checking................................................... 364Dipstick.................................................... 364Disposal................................................... 366Filter................................................ 366, 424Filter Disposal........................................... 366Identification Logo.................................... 366Materials Added To.................................. 366Recommendation............................ 365, 423Synthetic.................................................. 366Viscosity................................................... 423Operator ManualOwner's Manual........................................ 431Outside Rearview Mirrors................................ 51
P
Paint Care..................................................... 411Pair (Link) Uconnect Phone To A Mobile
Phone
S
..................................................... 246Parking Brake............................................... 152ParkSenseFront And Rear......................................... 184ParkSense System, Rear.............................. 184Passive Entry................................................... 25Pedestrian Warning System.......................... 293Personalized Main Menu Bar........................ 232Pets.............................................................. 329Phone Mode................................................. 244Placard, Tire And Loading Information.......... 400
PowerBrakes...................................................... 418Door Locks...................................................25Inverter........................................................78Mirrors.........................................................52Steering.................................................... 168Windows......................................................81Power Steering Fluid..................................... 426Pregnant Women And Seat Belts.................. 304Preparation For Jacking................................ 336Presets.......................................................... 240Pressure Washing......................................... 365PretensionersSeat Belts................................................. 304
Q
Qualcomm TrueWireless Stereo.......................75
R
Radial Ply Tires.............................................. 403Radiator Cap (Coolant Pressure Cap)............ 378RadioPresets..................................................... 240Radio Controls.............................................. 234Radio Mode................................................... 234Radio Operation................................... 234, 276Radio Remote Controls................................. 233Raising The Soft Top
S
..................................89Rear Axle (Differential).................................. 380Rear Camera................................................. 189
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