radiator cap JEEP GLADIATOR 2023 Owners Manual

GETTING TO KNOW YOUR VEHICLE109
5. Reinstall the protective caps over the wiper arm hex bolts and push gently until they snap
into place.

Step Five

NOTE:Make sure the windshield is raised prior to
installing the tops.
HOOD
OPENING THE HOOD
Release both of the outside hood latches.
Hood Latch Locations

Raise the hood slightly, and place a hand
palm-side down in the center of the hood opening.
Locate the safety latch in the middle, and push the
latch to the right to open.

Place Hand In Hood Opening
Remove the support rod from the hood, and insert
it into the radiator crossmember.
NOTE:
Vehicle must be at a stop and the gear selector
must be in PARK.
You may have to push down slightly on the hood
before pushing the safety latch.
While lifting the hood, use both hands.
Before lifting the hood, check that the wiper
arms are not in motion and not in the lifted posi
-
tion.
CLOSING THE HOOD
To close the hood, remove the support rod from the
radiator crossmember, and install into the clip on
the hood. Lower the hood slowly. Secure both of
the hood latches.
1 — Hex Bolt Cover Installed
2 — Hex Bolt Cover Removed
WARNING!
Be sure the hood is fully latched before driving
your vehicle. If the hood is not fully latched, it
could open when the vehicle is in motion and
block your vision. Failure to follow this warning
could result in serious injury or death.
2

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348IN CASE OF EMERGENCY
In the event it is observed that the temperature
gauge is moving towards or close to the HOT (H)
position, you can reduce the potential for
overheating by taking the appropriate action.
On the highways — slow down.
In city traffic — while stopped, place the trans -
mission in NEUTRAL (N), but do not increase the
engine idle speed while preventing vehicle
motion with the brakes.
If your Air Conditioner (A/C) is on, turn it off. The
A/C system adds heat to the engine cooling
system and turning the A/C off can help remove
this heat.
You can also turn the temperature control to
maximum heat, the mode control to floor and
the blower control to high. This allows the heater
core to act as a supplement to the radiator and
aids in removing heat from the engine cooling
system.
MANUAL PARK RELEASE
In order to move the vehicle in cases where the
transmission will not shift out of Park (P) (such as
a depleted battery), a Manual Park Release is
available. See the following steps to use the Manual Park
Release:

1. Firmly apply the parking brake.

2. Using a small screwdriver or similar tool,
remove the manual park release cover located
in front of the gear selector, to access the
release tether strap.

Manual Park Release Cover

WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator.
If you see or hear steam coming from under the
hood, do not open the hood until the radiator
has had time to cool. Never try to open a cooling
system pressure cap when the radiator or
coolant bottle is hot.
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads “H,
” pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the
pointer drops back into the normal range. If the
pointer remains on the “H” and you hear
continuous chimes, turn the engine off
immediately and call for service.
WARNING!
Always secure your vehicle by fully applying the
parking brake before activating the Manual Park
Release. In addition, you should be seated in the
driver’s seat with your foot firmly on the brake
pedal when activating the Manual Park Release.
Activating the Manual Park Release will allow
your vehicle to roll away if it is not secured by the
parking brake, or by proper connection to a tow
vehicle. Activating the Manual Park Release on
an unsecured vehicle could lead to serious
injury or death for those in or around the vehicle.

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SERVICING AND MAINTENANCE377
COOLING SYSTEM
Coolant Checks
Check the engine coolant (antifreeze) protection
every 12 months (before the onset of freezing
weather, where applicable). If the engine coolant is
dirty or rusty in appearance, the system should be
drained, flushed, and refilled with fresh Organic
Additive Technology (OAT) coolant (conforming to MS.90032) by an authorized dealer. Check the
front of the A/C condenser (if equipped) or radiator
for any accumulation of bugs, leaves, etc. If dirty,
clean by gently spraying water from a garden hose
vertically down the face of the A/C condenser (if
equipped) or the back of the radiator core.
Check the engine cooling system hoses for brittle
rubber, cracking, tears, cuts, and tightness of the
connection at the coolant recovery bottle and
radiator. Inspect the entire system for leaks. DO
NOT REMOVE THE COOLANT PRESSURE CAP
WHEN THE COOLING SYSTEM IS HOT.
Cooling System — Drain, Flush, And Refill
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.
If the engine coolant (antifreeze) is dirty or
contains visible sediment, have an authorized
dealer clean and flush with OAT coolant
(conforming to MS.90032).
For the proper maintenance intervals see
Ú
page 354 for gas engines or Ú page 358 for
diesel engines.
Selection Of Coolant
For further information Ú page 424.
NOTE:
Mixing of engine coolant (antifreeze), other than
specified Organic Additive Technology (OAT)
engine coolant, may result in engine damage
and may decrease corrosion protection. OAT
engine coolant is different and should not be
mixed with Hybrid Organic Additive Technology
(HOAT) engine coolant or any “globally compat -
ible” coolant. If a non-OAT engine coolant is
introduced into the cooling system in an emer -
gency, the cooling system will need to be
drained, flushed, and refilled with fresh OAT
coolant (conforming to MS.90032), by an autho -
rized dealer as soon as possible.
Do not use water alone or alcohol-based engine
coolant products. Do not use additional rust
inhibitors or anti-rust products, as they may not
be compatible with the radiator engine coolant
and may clog the radiator.
This vehicle has not been designed for use with
propylene glycol-based engine coolant. Use of
propylene glycol-based engine coolant is not
recommended.
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.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from your
radiator. If you see or hear steam coming from
under the hood, do not open the hood until the
radiator has had time to cool. Never open a
cooling system pressure cap when the radi -
ator or coolant bottle is hot.
Keep hands, tools, clothing, and jewelry away
from the radiator cooling fan when the hood is
raised. The fan starts automatically and may
start at any time, whether the engine is
running or not.
When working near the radiator cooling fan,
disconnect the fan motor lead or turn the igni -
tion to the OFF position. The fan is tempera -
ture controlled and can start at any time the
ignition is in the ON position.
8

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378SERVICING AND MAINTENANCE
Adding Coolant

Your vehicle has been built with an improved engine
coolant (OAT coolant conforming to MS.90032) that
allows extended maintenance intervals. This engine
coolant (antifreeze) can be used up to 10 years or
150,000 miles (240,000 km) before replacement.
To prevent reducing this extended maintenance
period, it is important to use the same engine
coolant (OAT coolant conforming to MS.90032)
throughout the life of your vehicle.

Please review these recommendations for using
Organic Additive Technology (OAT) engine coolant
that meets the requirements of the manufacturer
Material Standard MS.90032. When adding
engine coolant (antifreeze):
We recommend using Mopar® Antifreeze/
Coolant 10 Year/150,000 Mile (240,000 km)
Formula OAT (Organic Additive Technology) that
meets the requirements of the manufacturer
Material Standard MS.90032.
Mix a minimum solution of 50% OAT engine
coolant that meets the requirements of the
manufacturer Material Standard MS.90032
and distilled water. Use higher concentrations
(not to exceed 70%) if temperatures below
-34°F (-37°C) are anticipated. Please contact
an authorized dealer for assistance.
Use only high purity water, such as distilled or
deionized water, when mixing the water/engine coolant solution. The use of lower quality water
will reduce the amount of corrosion protection
in the engine cooling system.
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.
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 recom
-
mended 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.
WARNING!
Do not open hot engine cooling system. Never
add engine coolant (antifreeze) when the
engine is overheated. 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
specified for your vehicle. Personal injury or
engine damage may result.

23_JT_OM_EN_USC_t.book Page 378

SERVICING AND MAINTENANCE379
Coolant Level
The coolant bottle provides a quick visual method
for determining that the coolant level is adequate.
With the engine in the 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
only needs to be checked once a month.
When additional engine coolant is needed to
maintain the proper level, only OAT coolant that
meets the requirements of FCA Material Standard
MS.90032 should be added to the coolant bottle.
Do not overfill.
Cooling System Notes
NOTE:When the vehicle is stopped after a few miles/kilo -
meters of operation, you may observe vapor
coming from the front of the engine compartment.
This is normally a result of moisture from rain,
snow, or high humidity accumulating on the
radiator and being vaporized when the thermostat
opens, allowing hot engine coolant (antifreeze) to
enter the radiator. If an examination of your engine compartment
shows no evidence of radiator or hose leaks, the
vehicle may be safely driven. The vapor will soon
dissipate.
Do not overfill the coolant expansion bottle.
Check the freezing point of the coolant in the
radiator and in the coolant expansion bottle. If
determined that more engine coolant needs to
be added to the radiator, the contents of the
coolant expansion bottle must also be protected
against freezing.
If frequent engine coolant additions are
required, the cooling system should be pressure
tested for leaks.
Maintain engine coolant concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corro
-
sion protection of your engine which contains
aluminum components.
Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.
Keep the front of the radiator clean. With air
conditioning, keep the front of the condenser
clean.
Do not change the thermostat for Summer or
Winter operation. If replacement is ever neces -
sary, install ONLY the correct type thermostat. Other designs may result in unsatisfactory
engine system performance, poor gas mileage,
and increased emissions.
CHARGE AIR COOLER — INTER-COOLER
(D
IESEL ENGINE)
The charge air cooler is positioned in front of the
radiator and the air conditioner condenser. Air
enters the engine through the air cleaner and
passes through the turbocharger, where it is
pressurized. This pressurized air rapidly reaches
high temperature. The air is then directed through
a hose to the charge air cooler and through
another hose to the intake manifold of the engine.
This cooling process enables more efficient
burning of fuel resulting in fewer emissions.
To guarantee optimum performance of the system,
keep the surfaces of the charge air cooler,
condenser and radiator clean and free of debris.
Periodically check the hoses leading to and from
the charge air cooler for cracks or loose clamps
resulting in loss of pressure and reduced engine
performance.
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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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439
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
11

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