2015 JEEP WRANGLER cooling

NOTE:
•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 your
local authorized dealer.
•Mixing engine coolant (antifreeze) types is not recom-
mended and can result in cooling system damage. If
HOAT and OAT coolant are mixed in an emergency,
have a authorized dealer drain, flush, and refill with
OAT coolant (conforming to MS-12106) 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
(antifreeze) will return to the radiator from the coolant
recovery tank.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
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 en-
gine damage may result.7
MAINTAINING YOUR VEHICLE 615

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 coolant freeze point in the radiator and in
the coolant expansion bottle. If engine coolant (anti-
freeze) needs to be added, the contents of the coolant
expansion bottle must also be protected against freez-
ing.
•If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks.
•Maintain engine coolant (antifreeze) concentration
at a minimum of 50% OAT coolant (conforming to
MS-12106) and distilled water for proper corrosion
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. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
•Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory engine coolant (antifreeze)
performance, poor gas mileage, and increased emis-
sions.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
7
MAINTAINING YOUR VEHICLE 617

FLUID CAPACITIES
U.S.Metric
Fuel (Approximate)
Two Door Models18.6 Gallons70 Liters
Four Door Models22.5 Gallons85 Liters
Engine Oil with Filter
3.6L Engine6 Quarts5.6 Liters
Cooling System *
3.6L Engine (MOPAR® Antifreeze/
Engine Coolant 10 Year/150,000
Mile Formula or equivalent)
10.5 Quarts9.9 Liters
* Includes coolant recovery bottle filled to MAX level.
646 MAINTAINING YOUR VEHICLE

CAUTION!
•Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine
damage and may decrease corrosion protection.
Organic Additive Technology (OAT) engine cool-
ant is different and should not be mixed with
Hybrid Organic Additive Technology (HOAT) en-
gine coolant (antifreeze) or any “globally compat-
ible” 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-12106), by an
authorized dealer as soon as possible.
(Continued)
CAUTION!(Continued)
•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 (an-
tifreeze) is not recommended.
648 MAINTAINING YOUR VEHICLE

Once A Month Or Before A Long Trip:
•Check engine oil level
•Check windshield washer fluid level
•Check the tire inflation pressures and look for unusual
wear or damage
•Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and automatic trans-
mission, and fill as needed
•Check function of all interior and exterior lights
Required Maintenance Intervals.
Refer to the maintenance schedules on the following
page for the required maintenance intervals.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Change oil and filter
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Rotate the tires.Rotate at the first sign of irregu-
lar wear, even if it occurs before the oil indicator
system turns on.
•Inspect battery and clean and tighten terminals as
required
•Inspect automatic transmission fluid if equipped
with dipstick
•Inspect brake pads, shoes, rotors, drums, hoses
and park brake
•Inspect engine cooling system protection and hoses
•Inspect exhaust system
•Inspect engine air cleaner if using in dusty or
off-road conditions
•Inspect all door latches for presence of grease,
reapply if necessary.
8
MAINTENANCE
SCHEDULES
MAINTENANCE SCHEDULES 653

Compact Disc (CD) Maintenance..............397
Compact Spare Tire........................505
Compass...............................322
Compass Calibration.......................325
Compass Variance.........................324
Computer, Trip/Travel......................321
Connector
UCI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..389
Universal Consumer Interface (UCI)..........389
Console................................189
Console, Floor...........................189
Contract, Service..........................665
Coolant Pressure Cap (Radiator Cap)...........615
Cooling System...........................611
Adding Coolant (Antifreeze)...............614
Coolant Capacity.......................646
Coolant Level..........................616
Disposal of Used Coolant.................616
Drain, Flush, and Refill...................612
Inspection............................612
Points to Remember.....................616
Pressure Cap..........................615
Radiator Cap..........................615
Selection of Coolant (Antifreeze).............613
Corrosion Protection.......................625
Cruise Light.............................318
Cupholders.............................188
Customer Assistance.......................663
Data Recorder, Event.......................75
Daytime Running Lights....................171
Dealer Service............................586
Defroster, Rear Window.....................298
Defroster, Windshield......................101
Delay (Intermittent) Wipers..................176
Diagnostic System, Onboard.................584
10
INDEX 675

Emission Control System Maintenance..........585
Engine
Air Cleaner...........................591
Block Heater..........................424
Break-In Recommendations.................98
Compartment..........................583
Compartment Identification................583
Coolant (Antifreeze).....................647
Cooling..............................611
Exhaust Gas Caution.....................100
Fails to Start...........................422
Flooded, Starting.......................422
Fuel Requirements......................525
Jump Starting..........................570
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..588
Oil Change Interval......................331
Oil Selection...........................589
Oil Synthetic..........................590
Overheating...........................560
Starting..............................420
Temperature Gauge......................312
Engine Oil Viscosity.......................590
Engine Oil Viscosity Chart...................590
Enhanced Accident Response Feature............72
Entry System, Illuminated....................22
Ethanol................................526
Event Data Recorder........................75
Exhaust Gas Caution.......................100
Exhaust System...........................100
Exterior Lights...........................103
Fabric Care..............................628
Fabric Top..............................630
Filters
Air Cleaner...........................591
Air Conditioning.......................413
Engine Oil............................591
Engine Oil Disposal.....................59010
INDEX 677

Jacking...............................563
Life of Tires...........................508
Load Capacity.........................493
Pressure Monitor System (TPMS)............513
Pressure Warning Light...................318
Quality Grading........................669
Radial...............................501
Replacement...........................509
Rotation..............................512
Safety...............................487
Sizes................................488
Snow Tires............................503
Spare Tire.............................565
Spinning.............................507
Tread Wear Indicators....................507
Tire Safety Information.....................487
Tongue Weight/Trailer Weight................545
To Open Hood...........................165
Tow Hooks, Emergency.....................575
Towing................................534
24-Hour Towing Assistance................129
Disabled Vehicle........................577
Guide...............................538
Recreational...........................553
Weight...............................538
Towing Assistance.........................129
Towing Vehicle Behind a Motorhome...........553
Trac-Lok Rear Axle........................446
Traction Control..........................471
Trailer Sway Control (TSC)..................484
Trailer Towing...........................534
Cooling System Tips.....................552
Hitches..............................537
Minimum Requirements..................546
Trailer and Tongue Weight.................545
Wiring...............................550
Trailer Towing Guide.......................538
Trailer Weight............................53810
INDEX 689