User Manual - Page 9

For 2021 WRANGLER.

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7
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE
ENGINE ............................................................... 360
Maintenance Plan......................................361
SCHEDULED SERVICING — DIESEL ENGINE .. 364
Maintenance Plan — Diesel Fuel Up To B5
Biodiesel.....................................................365
Additional Maintenance — B6 To B20
Biodiesel.....................................................367
ENGINE COMPARTMENT .................................. 368
2.0L Gasoline Engine ...............................368
3.6L Gasoline Engine ...............................369
3.0L Diesel Engine.....................................370
Checking Oil Level......................................371
Adding Washer Fluid..................................371
Maintenance-Free Battery .......................371
Pressure Washing......................................372
VEHICLE MAINTENANCE .................................. 372
Engine Oil ..................................................372
Engine Oil Filter..........................................373
Engine Air Cleaner Filter............................374
Draining Fuel/Water Separator Filter —
Diesel Engine .............................................375
Fuel Filter Replacement — Diesel
Engine.........................................................376
Priming If The Engine Has Run Out Of
Fuel — Diesel Engine ................................378
Intervention Regeneration Strategy —
Message Process Flow .............................378
Diesel Exhaust Fluid ..................................379
Accessory Drive Belt Inspection ...............379
Air Conditioner Maintenance ....................380
Body Lubrication........................................382
Windshield Wiper Blades ..........................382
Exhaust System ........................................384
Cooling System ..........................................385
Brake System ............................................389
Front/Rear Axle Fluid ...............................390
Transfer Case ............................................390
Manual Transmission — If Equipped ........390
Automatic Transmission — If Equipped ...391
Fuses .........................................................392
Bulb Replacement .....................................400
TIRES ..................................................................404
Tire Safety Information..............................404
Tires — General Information .....................410
Tire Types ...................................................415
Spare Tires — If Equipped ........................415
Wheel And Wheel Trim Care .....................417
Snow Traction Devices .............................418
Tire Rotation Recommendations .............419
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES .....................................420
Treadwear ..................................................420
Traction Grades .........................................420
Temperature Grades .................................420
STORING THE VEHICLE......................................421
BODYWORK ........................................................422
Protection From Atmospheric Agents.......422
Body And Underbody Maintenance..........422
Preserving The Bodywork..........................422
INTERIORS ......................................................... 424
Carpet Safety Information.........................424
Carpet Removal .........................................425
Seats And Fabric Parts..............................429
Plastic And Coated Parts...........................430
Leather Surfaces .......................................430
Glass Surfaces ..........................................430
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER ............... 431
BRAKE SYSTEM ................................................. 431
WHEEL AND TIRE TORQUE
SPECIFICATIONS................................................ 431
Torque Specifications................................431
FUEL REQUIREMENTS — GASOLINE
ENGINE................................................................ 432
2.0L Engine................................................432
3.6L Engine................................................432
Reformulated Gasoline .............................433
Materials Added To Fuel ...........................433
Gasoline/Oxygenate Blends ....................433
Do Not Use E-85 In Non-Flex Fuel
Vehicles......................................................433
CNG And LP Fuel System Modifications ..434
MMT In Gasoline........................................434
Fuel System Cautions................................434
FUEL REQUIREMENTS – DIESEL ENGINE ...... 434
Diesel Fuel Specifications.........................435
Biodiesel Fuel Requirements....................435
21_JL_OM_EN_USC_t.book Page 7
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