2016 JEEP WRANGLER cooling

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.
(Continued)
WARNING! (Continued)
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
Disposal Of Used Engine Coolant
Used ethylene glycol-based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposal
rules for your community. To prevent ingestion by ani-
mals or children, do not store ethylene glycol-based
engine coolant in open containers or allow it to remain in
puddles on the ground. If ingested by a child or pet, seek
emergency assistance immediately. Clean up any ground
spills immediately.
628 MAINTAINING YOUR VEHICLE

•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.90032) 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.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting or
riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You would not have your full
braking capacity in an emergency.
630 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES
U.S.Metric
Fuel (Approximate)
Two Door Models 18.6 Gallons70 Liters
Four Door Models 22.5 Gallons85 Liters
Engine Oil with Filter
3.6L Engine 6 Quarts5.6 Liters
Cooling System *
3.6L Engine (MOPAR Antifreeze/
Engine Coolant 10 Year/150,000
Mile Formula or equivalent) 10.5 Quarts
9.9 Liters
* Includes coolant recovery bottle filled to MAX level.
7
MAINTAINING YOUR VEHICLE 659

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.90032), by an au-
thorized 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.
7
MAINTAINING YOUR VEHICLE 661

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 OilChange Indicator System:
•Change oil and filter
• 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
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•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.
Maintenance Chart
Refer to the Maintenance Schedules on the following
pages for the required maintenance intervals.
666 MAINTENANCE SCHEDULES

Compact Spare Tire....................... .516
Compass ........................ .338, 341, 348
Compass Calibration ....................341, 349
Compass Variance .....................340, 350
Computer, Trip/Travel ..................... .347
Connector UCI................................ .404
Universal Consumer Interface (UCI) ..........404
Console ............................... .192
Console, Floor .......................... .192
Contract, Service ......................... .675
Coolant Pressure Cap (Radiator Cap) ...........628
Cooling System .......................... .624
Adding Coolant (Antifreeze) ...............626
Coolant Capacity ...................... .659
Coolant Level ......................... .629
Disposal Of Used Coolant .................628
Drain, Flush, And Refill ...................625
Inspection ........................... .624Points To Remember
.....................629
Pressure Cap ......................... .628
Radiator Cap ......................... .628
Selection Of Coolant (Antifreeze) ......625, 659, 660
Corrosion Protection ...................... .638
Cupholders ............................ .191
Customer Assistance ...................... .673
Data Recorder, Event .......................74
Daytime Running Lights ....................172
Dealer Service ........................... .599
Defroster, Rear Window .....................302
Defroster, Windshield ............102, 417, 423, 424
Delay (Intermittent) Wipers ..................178
Diagnostic System, Onboard .................596
Dimmer Switch, Headlight ...................171
Dipsticks Oil (Engine) .......................... .600
Power

Steering ........................ .477
10
INDEX 685

Compartment Identification................595
Coolant (Antifreeze) .....................660
Cooling ............................. .624
Exhaust Gas Caution .................100, 538
Fails To Start ......................... .435
Flooded, Starting ...................... .435
Fuel Requirements ...................534, 659
Jump Starting ......................... .581
Oil .......................... .600, 659, 660
Oil Change Interval ..................... .353
Oil Filter ............................ .603
Oil Selection ...................... .601, 659
Oil Synthetic ......................... .602
Overheating .......................... .570
Starting .......................... .434, 435
Engine Oil Viscosity ...................... .602
Engine Oil Viscosity Chart ...................602
Enhanced Accident Response Feature ............71
Entry System, Illuminated ....................21 Ethanol
............................... .535
Event Data Recorder ........................74
Exhaust Gas Caution ...................100, 538
Exhaust System ...................... .100, 622
Exterior Lights .......................... .104
Fabric Care ............................. .644
Fabric Top ............................. .644
Filters Air Cleaner .......................... .603
Air Conditioning ....................427, 612
Engine Oil ........................ .603, 660
Engine Oil Disposal .....................602
Flashers Hazard Warning ....................... .570
Turn Signal .....................104, 657, 658
Flash-To-Pass ........................... .171
Flooded Engine Starting ....................435
Fluid, Brake ............................ .662
10
INDEX 687

Towing......................... .544, 548, 589
24-Hour Towing Assistance ................129
Disabled Vehicle ....................... .589
Recreational .......................... .563
Weight .............................. .548
Towing Assistance ........................ .129
Towing Vehicle Behind A Motorhome ...........563
Trac-Lok Rear Axle ....................... .458
Traction Control ......................... .487
Trailer Sway Control (TSC) ..................496
Trailer Towing .......................... .544
Cooling System Tips .....................562
Hitches ............................. .546
Minimum Requirements ..................556
Trailer And Tongue Weight .............548, 555
Wiring .............................. .559
Trailer Towing Guide ...................... .548
Trailer Weight ........................... .548Transaxle
Autostick ............................ .451
Transfer Case ........................... .637
Fluid ............................... .662
Four-Wheel-Drive Operation ...............454
Maintenance .......................... .637
Transmission ........................... .632
Automatic ........................ .445, 632
Fluid ............................... .662
Manual ............................. .438
Shifting ............................. .442
Transmitter Battery Service (Remote Keyless Entry) ....................27
Tread Wear Indicators ..................... .518
Trip Computer .......................... .338
Turn Signals ..................... .170, 657, 658
UCI Connector .......................... .404
10
INDEX 699