2023 JEEP WRANGLER low oil pressure
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330SERVICING AND MAINTENANCE
NOTE:
It is the owner's responsibility to maintain the proper
level of protection against freezing according to the
temperatures occurring in the area where the vehicle is
operated.
Use care when filling under hood fluids such as engine
oil, washer fluid, antifreeze, etc., to minimize spillage
onto the top of the engine. Any excess fluid that is
spilled onto the top of the engine should be removed
using compressed air or an absorbent cloth.
Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could
lead to severe internal engine damage. If any coolant is
needed to be added to the system, please contact an
authorized dealer.
Mixing engine coolant types is not recommended and
can result in cooling system damage. If HOAT and OAT
coolant are mixed in an emergency, have an authorized
dealer drain, flush, and refill with OAT coolant
(conforming to MS.90032) as soon as possible.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant will
return to the radiator from the coolant expansion bottle/
recovery tank if so equipped.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) OAT or
HOAT, is a regulated substance requiring proper disposal.
Check with your local authorities to determine the disposal
rules for your community. To prevent ingestion by animals
or children, do not store ethylene glycol-based coolant in
open containers or allow it to remain in puddles on the
ground, clean up any ground spills immediately. If
ingested, seek emergency assistance immediately.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. With the
engine OFF and cold, the level of the engine coolant
(antifreeze) in the bottle should be between the ranges
indicated on the bottle. The radiator normally remains completely full, so there is
no need to remove the radiator/coolant pressure cap
unless checking for engine coolant freeze point or
replacing coolant. Advise your service attendant of this. As
long as the engine operating temperature is satisfactory,
the coolant bottle need only be checked once a month.
When additional engine coolant is needed to maintain the
proper level, only OAT coolant that meets the
requirements of the manufacturer Material Standard
MS.90032 should be added to the coolant bottle. Do not
overfill.
Engine Coolant Level — 2.0L
WARNING!
Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over -
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
Do not use a pressure cap other than the one speci -
fied for your vehicle. Personal injury or engine
damage may result.
WARNING!
Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is over -
heated. Do not loosen or remove the cap to cool an
overheated engine. Heat causes pressure to build up
in the cooling system. To prevent scalding or injury,
do not remove the pressure cap while the system is
hot or under pressure.
Do not use a pressure cap other than the one speci -
fied for your vehicle. Personal injury or engine
damage may result.
23_JL_OM_EN_USC_t.book Page 330
Page 356 of 396
354SERVICING AND MAINTENANCE
(Continued)
Tread Wear Indicators
Tread wear indicators are in the original equipment tires to
help you in determining when your tires should be
replaced.
Tire Tread
These indicators are molded into the bottom of the tread
grooves. They will appear as bands when the tread depth
becomes 1/16 of an inch (1.6 mm). When the tread is
worn to the tread wear indicators, the tire should be
replaced.
For further information
Úpage 354.
Life Of Tire
The service life of a tire is dependent upon varying factors
including, but not limited to:
Driving style.
Tire pressure - Improper cold tire inflation pressures can
cause uneven wear patterns to develop across the tire tread. These abnormal wear patterns will reduce tread
life, resulting in the need for earlier tire replacement.
Distance driven.
Performance tires, tires with a speed rating of V or
higher, and Summer tires typically have a reduced
tread life. Rotation of these tires per the vehicle sched-
uled maintenance is highly recommended.
NOTE:Wheel valve stem must be replaced as well when installing
new tires due to wear and tear in existing tires.
Keep dismounted tires in a cool, dry place with as little
exposure to light as possible. Protect tires from contact
with oil, grease, and gasoline.
Replacement Tires
The tires on your new vehicle provide a balance of many
characteristics. They should be inspected regularly for
wear and correct cold tire inflation pressures. The
manufacturer strongly recommends using tires equivalent
to the originals in size, quality and performance when
replacement is needed. Refer to the paragraph on “Tread
Wear Indicators” in this section. Refer to the Tire And
Loading Information Placard or the Vehicle Certification
Label for the size designation of your tire. The Load Index
and Speed Symbol for your tire will be found on the original
equipment tire sidewall. For more information relating to the Load Index and Speed
Symbol of a tire
Úpage 346.
It is recommended to replace the two front tires or two rear
tires as a pair. Replacing just one tire can seriously affect
your vehicle’s handling. If you ever replace a wheel, make
sure that the wheel’s specifications match those of the
original wheels.
It is recommended you contact an authorized tire dealer or
original equipment dealer with any questions you may
have on tire specifications or capability. Failure to use
equivalent replacement tires may adversely affect the
safety, handling, and ride of your vehicle.
1 — Tread Wear Indicators
WARNING!
Tires and the spare tire should be replaced after six
years, regardless of the remaining tread. Failure to follow
this warning can result in sudden tire failure. You could
lose control and have a collision resulting in serious
injury or death.
WARNING!
Do not use a tire, wheel size, load rating, or speed
rating other than that specified for your vehicle.
Some combinations of unapproved tires and wheels
may change suspension dimensions and perfor -
mance characteristics, resulting in changes to
steering, handling, and braking of your vehicle. This
can cause unpredictable handling and stress to
steering and suspension components. You could
lose control and have a collision resulting in serious
injury or death. Use only the tire and wheel sizes with
load ratings approved for your vehicle.
Never use a tire with a smaller load index or capacity,
other than what was originally equipped on your
vehicle. Using a tire with a smaller load index could
result in tire overloading and failure. You could lose
control and have a collision.
23_JL_OM_EN_USC_t.book Page 354
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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
11
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386
K
Key Fob Arm The System .........................................................20
Disarm The System....................................................20
Programming Additional Key Fobs ...........................15
Key Fob Battery Service (Remote Keyless Entry) .........14
Key Fob Programming (Remote Keyless Entry) ............ 15
Keyless Enter 'n Go™ ...................................................... 21 Passive Entry .............................................................. 21
Keys .................................................................................13 Replacement .............................................................. 15
LLane Change Assist ........................................................52
Lap/Shoulder Belts ...................................................... 262
Latches ......................................................................... 290 Hood ............................................................... 100
, 118
Leaks, Fluid .................................................................. 290
Life Of Tires .................................................................. 354
Light Bulbs ........................................................... 290
, 342
Lights ............................................................................ 290 Air Bag ...................................................117
, 267, 289
Automatic Headlights ................................................51
Brake Assist Warning ............................................. 247
Brake Warning ........................................................ 117 Bulb Replacement ......................................... 342
, 343
Center Mounted Stop ............................................. 345
Cruise.............................................................. 123
, 124
Daytime Running ....................................................... 51
Dimmer Switch, Headlight.........................................51
Electric Power Steering .......................................... 118
Electronic Stability Program (ESP) Indicator .. 118
, 119
Exterior ............................................................. 50, 290
Fog ........................................................................... 344 Fuel Filler Cap .......................................................... 120
Hazard Warning Flasher ......................................... 291
Headlights ................................................................ 343
High Beam ................................................................. 51
High Beam/Low Beam Select .................................. 51
Hill Descent Control Indicator................................. 248
Interior........................................................................ 52
Lights On Reminder................................................... 51
Low Fuel ...................................................................120 Low Washer Fluid ....................................................120Malfunction Indicator (Check Engine).................... 120
Oil Temperature ....................................................... 118
Park .......................................................................... 123Passing....................................................................... 51
Rear Servicing.......................................................... 344
Rear Tail Lamps....................................................... 344
Seat Belt Reminder ................................................. 118
Security Alarm.......................................................... 119
Service ........................................................... 342
, 343
Side Marker ............................................................. 344
Tire Pressure Monitoring (TPMS)............................ 257
Traction Control ....................................................... 247
Transmission Temperature..................................... 119
Turn Signal ............................................................... 290
Turn Signals ................................................... 123
, 344
Warning Instrument Cluster Descriptions.... 118, 123
Load Floor, Cargo.......................................................... 102
Load Shed Battery Saver Mode ...................................114
Load Shed Battery Saver On ........................................ 114
Load Shed Electrical Load Reduction ......................... 114
Load Shed Intelligent Battery Sensor..........................114
Loading Vehicle............................................................. 169 Tires.......................................................................... 349
Locking Axle ...........................................................................144 Locks
Automatic Door ......................................................... 23
Child Protection ......................................................... 23
Power Door ................................................................ 21
Low Tire Pressure System............................................ 257
Lowering The Soft Top Into Sunrider® Position
S
.... 67
Lubrication, Body.......................................................... 326
Lug Nuts/Bolts ............................................................. 368
Luggage Carrier ............................................................ 102
MMaintenance................................................................... 91
Maintenance Free Battery ........................................... 317
Maintenance Schedule .......................................306
, 310
Malfunction Indicator Light (Check Engine) ......120, 125
Manage My Account..................................................... 237
Manual Park Release ........................................................... 301
Service ..................................................................... 380
Manual Transmission..........................................134
, 332
Fluid Level Check .................................................... 332
Lubricant Selection ........................................332
, 376
Shift Speeds ............................................................ 135
Media Mode .................................................................. 210
Methanol ....................................................................... 370
Mirrors ............................................................................. 45 Automatic Dimming .................................................. 45
Electric Powered ....................................................... 46
Electric Remote ......................................................... 46
Heated ....................................................................... 46
Outside....................................................................... 46
Rearview .................................................................... 45
Vanity ......................................................................... 46
Mobile App .................................................................... 227
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