cooling JEEP WRANGLER 2023 Owner's Manual

SERVICING AND MAINTENANCE359
on a specified government test course.
For example, a tire graded 150 would
wear one and one-half times as well on
the government course as a tire graded
100. The relative performance of tires
depends upon the actual conditions of
their use, however, and may depart
significantly from the norm due to
variations in driving habits, service
practices, and differences in road
characteristics and climate.
TRACTION GRADES
The Traction grades, from highest to
lowest, are AA, A, B, and C. These grades
represent the tire's ability to stop on wet
pavement, as measured under
controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have poor
traction performance.
TEMPERATURE GRADES
The Temperature grades are A (the
highest), B, and C, representing the tire's
resistance to the generation of heat and
its ability to dissipate heat, when tested
under controlled conditions on a
specified indoor laboratory test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. The grade C corresponds to a
level of performance, which all
passenger vehicle tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A
represent higher levels of performance on the laboratory test wheel, than the
minimum required by law.
STORING THE VEHICLE
WARNING!
The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not
include acceleration, cornering, hydroplaning, or peak
traction characteristics.
WARNING!
The temperature grade for this tire is established for a
tire that is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading,
either separately or in combination, can cause heat
buildup and possible tire failure.
WARNING!

Take care to avoid the radiator cooling fan whenever
the hood is raised. It can start anytime the ignition
switch is ON. You can be injured by moving fan
blades.
 Remove any metal jewelry such as rings, watch
bands and bracelets that could make an inadvertent
electrical contact. You could be seriously injured.
 Vehicles with the Stop/Start system will be equipped
with two batteries. Both the main and the supple -
mental batteries must be disconnected to
completely de-energize the 12 Volt electrical system.
 Serious injury or death could result if you do not
disconnect both batteries. To learn how to properly
disconnect, see an authorized dealer.
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TECHNICAL SPECIFICATIONS373
FLUID CAPACITIES
USMetric
Fuel (Approximate)
Two Door Models 17.5 gal66 L
Four Door Models 21.5 gal81 L
3.0L Diesel Engine 18.3 gal69 L
Diesel Exhaust Fluid Tank 5.1 gal19.3 L
Engine Oil with Filter
2.0L Engine 5 qt4.73 L
3.6L Engine 5 qt4.73 L
3.0L Diesel Engine 9 qt8.5 L
Cooling System *
2.0L Engine 11.8 qt11.2 L
2.0L Engine Intercooler 3.7 qt3.5 L
3.6L Engine 13.4 qt12.7 L
3.6L Motor Generator Unit (MGU) 2.3 qt2.2 L
3.6L Power Pack Unit (PPU) Coolant 3.1 qt2.9 L
3.0L Diesel Engine 14 qt13.2 L
* Includes coolant recovery bottle filled to MAX level.9

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TECHNICAL SPECIFICATIONS375
DIESEL ENGINES
CAUTION!
Mixing of engine coolant (antifreeze) other than specified Organic Additive Technology (OAT) engine coolant (antifreeze), may result in engine damage and may decrease corrosion
protection. Organic Additive Technology (OAT) engine coolant is different and should not be mixed with Hybrid Organic Additive Technology (HOAT) engine coolant (antifreeze) or
any “globally compatible” coolant (antifreeze). If a non-OAT engine coolant (antifreeze) is introduced into the cooling system in an emergency, the cooling system will need to be
drained, flushed, and refilled with fresh OAT coolant (conforming to MS.90032), by an authorized dealer as soon as possible.
 Do not use water alone or alcohol-based engine coolant (antifreeze) products. Do not use additional rust inhibitors or antirust products, as they may not be compatible with the
radiator engine coolant and may plug the radiator.
 This vehicle has not been designed for use with propylene glycol-based engine coolant (antifreeze). Use of propylene glycol-based engine coolant (antifreeze) is not recommended.
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend using Mopar® Antifreeze/Coolant 10 Year/150,000 Mile (240,000 km)
Formula OAT (Organic Additive Technology) or equivalent meeting the requirements of the
manufacturer Material Standard MS.90032.
Engine Oil — 3.0L Diesel Engine We recommend using Mopar® API Certified SAE 5W-40 Full Synthetic Engine Oil which
meets the requirements of the manufacturer Material Standard MS-12991. Equivalent
full synthetic SAE 5W-40 engine oil can be used but must be compliant to API SN/SP and
ACEA A3/B4 specifications.
Fuel Filters — 3.0L Diesel Engine We recommend using Mopar® Fuel Filter. Must meet 3 micron rating.
Using a fuel filter
that does not meet the manufacturer filtration and water separating requirements can
severely impact fuel system life and reliability.
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383
Bulb Replacement .............................................. 342, 343
Bulbs, Light.......................................................... 290, 342
Bumper End Cap Removal .......................................... 178
CCamera, Rear ............................................................... 163
Capacities, Fluid ........................................................... 373
Caps, Filler Fuel .......................................................................... 165
Oil (Engine) .............................................................. 314
Radiator (Coolant Pressure)................................... 330
Car Washes .................................................................. 361
Carbon Monoxide Warning .......................................... 290
Cargo Load Floor .......................................................... 102
Cargo Tie-Downs .......................................................... 102
Carpeting ...................................................................... 363
CD.................................................................................. 210
Cellular Phone .............................................................. 240
Center High Mounted Stop Light................................. 345
Certification Label ........................................................ 169
Chains, Tire................................................................... 357
Chart, Tire Sizing .......................................................... 346
Check Engine Light (Malfunction Indicator Light) ...... 125
Checking Your Vehicle For Safety ............................... 288
Checks, Safety.............................................................. 288
Child Restraint.............................................................. 277
Child Restraints Booster Seats.......................................................... 279
Child Seat Installation ............................................ 286
How To Stow An unused ALR Seat Belt ................. 284
Infant And Child Restraints .................................... 278Locating The LATCH Anchorages ........................... 282Lower Anchors And Tethers For Children .............. 280 Older Children And Child Restraints....................... 278
Seating Positions ..................................................... 280
Clean Air Gasoline ........................................................ 369
Cleaning Wheels .....................................................................356
Climate Control Automatic ................................................................... 54
Manual ....................................................................... 57
Cold Weather Operation ............................................... 128
Compact Spare Tire ...................................................... 355
Connected Services ................ 225
, 226, 227, 228, 237
Connector UCI .............................................................................. 61
Universal Consumer Interface (UCI) ......................... 61
Console............................................................................ 60 Floor ........................................................................... 60
Contract, Service .......................................................... 379
Controls ......................................................................... 201
Cooling Pressure Cap (Radiator Cap) ..........................330
Cooling System ............................................................. 328 Adding Coolant (Antifreeze) ....................................329
Coolant Level ...........................................................330
Cooling Capacity ...................................................... 373
Disposal Of Used Coolant ....................................... 330Drain, Flush, And Refill............................................329
Inspection ...................................................... 329
, 330
Points To Remember............................................... 331
Pressure Cap ...........................................................330
Radiator Cap ............................................................330 Selection Of Coolant (Antifreeze) ........ 329
, 373, 374
Corrosion Protection ..................................................... 360
Cruise Control (Speed Control) .......................... 151
, 152
Cruise Light ......................................................... 123, 124 Customer Assistance ................................................... 377
Customer Programmable Features ............................. 184
Cybersecurity ................................................................ 184
DDaytime Running Lights ................................................. 51
Dealer Service .............................................................. 318
Defroster, Windshield .................................................. 289
Delay (Intermittent) Wipers............................................ 53
Deleting A Phone .......................................................... 216
Diagnostic System, Onboard ....................................... 124
Diesel Display Messages ................................................... 115
Diesel Fuel .................................................................... 371
Diesel Fuel Requirements ........................................... 371 Bulk Storage Of ....................................................... 167
Diesel Fuel System, Re-Priming .................................. 323
Dimmer Switch Headlight ................................................................... 51
Dipsticks Oil (Engine) .............................................................. 317
Disable Vehicle Towing ................................................ 303
Disc Drive ...................................................................... 210
Disconnecting ............................................................... 216
Disposal Antifreeze (Engine Coolant) .................................... 330
Disturb........................................................................... 219
Door Ajar .............................................................. 117
, 119
Door Ajar Light ..................................................... 117, 119
Door Frame ..................................................................... 95 Installation ................................................................. 95
Removal..................................................................... 95
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384
Door Locks
Automatic ...................................................................23
Door Off Mirror Kit...........................................................29
Door Off Mirror Kit — If Equipped

S
............................ 29
Doors................................................................................ 20 Removal .............................................................. 24
, 27
Removal, Front...........................................................24
Removal, Rear ...........................................................27
Drag & Drop.................................................................. 200
Draining Fuel/Water Separator Filter ......................... 321
Driver Memory Presets ................................................ 207
Driver’s Seat Back Tilt ............................................. 37
, 38
Driving ........................................................................... 178
EElectric Brake Control System..................................... 245 Anti-Lock Brake System ......................................... 244
Electronic Roll Mitigation .............................. 245
, 251
Electric Remote Mirrors ..................................................46 Electrical Outlet, Auxiliary (Power Outlet) ...................... 62Electrical Power Outlets..................................................62Electronic Stability Control (ESC) ................................ 246
Electronic Throttle Control Warning Light................... 118
Emergency In Case Of ................................................................ 291SOS Emergency Call ............................................... 291
Emergency Brake ......................................................... 133
Emergency, In Case Of Jacking..................................................................... 293
Jump Starting .......................................................... 298
Tow Hooks ............................................................... 304
Emission Control System Maintenance...................... 125 Engine............................................................................314
Air Cleaner ............................................................... 319
Block Heater ............................................................129Break-In Recommendations ...................................133
Checking Oil Level ...................................................317
Compartment........................................ 314
, 315, 316
Compartment Identification................. 314, 315, 316
Coolant (Antifreeze)................................................. 374
Cooling .....................................................................328
Exhaust Gas Caution ............................................... 290
Fails To Start ............................................................128 Flooded, Starting ..................................................... 128Fuel Requirements ........................................ 369
, 373
Idling......................................................................... 131
Jump Starting...........................................................298
Oil .......................................................... 318
, 373, 374
Oil Filler Cap ............................................................. 314
Oil Filter ....................................................................319 Oil Reset...................................................................110Oil Selection ................................................... 318
, 373
Oil Synthetic ............................................................. 318
Starting.....................................................................126
Enhanced Accident Response Feature ............. 276
, 305
Ethanol .......................................................................... 370
Exhaust Gas Caution ....................................................290
Exhaust Gas Cautions ..................................................290
Exhaust System .................................................. 290
, 328
Exterior Lights ........................................................50, 290
FFabric Care ....................................................................361
Fabric Top...................................................................... 361
Family Alerts .................................................................. 236
FAQ ................................................................................ 237 Features ........................................................................ 228
Filters
Air Cleaner ............................................................... 319Air Conditioning ................................................ 59
, 325
Engine Fuel .............................................................. 321 Engine Oil................................................................. 319
Engine Oil Disposal ................................................. 319
Flashers Hazard Warning....................................................... 291Turn Signal............................................................... 290Turn Signals.................................................... 123
, 344
Flash-To-Pass.................................................................. 51
Flat Tire Changing ...............................................345
, 355
Flat Tire Stowage .................................................345, 355
Flooded Engine Starting............................................... 128
Fluid Capacities ............................................................ 373
Fluid Leaks.................................................................... 290
Fluid Level Manual Transmission ............................................. 332
Fluid Level Checks ....................................................... 332 Brake........................................................................ 331
Engine Oil................................................................. 317
Fluid, Brake................................................................... 376
Fog Lights...................................................................... 344
Fog Lights, Service ....................................................... 344
Fold And Tumble Rear Seat ........................................... 39
Fold-Flat Seats ................................................................ 37
Folding Rear Seats ......................................................... 39
Folding Windshield ......................................................... 97
Forward Collision Warning ........................................... 255
Four Wheel Drive .......................................................... 140 Operation ........................................................140
, 141
Shifting..................................................................... 140 System ..................................................................... 140

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