2014 JEEP WRANGLER radiator

leaves, etc. If dirty, clean by gently spraying water from a
garden hose vertically down the face of the A/C con-
denser (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.
With the engine at normal operating temperature (but
not running), check the cooling system pressure cap for
proper vacuum sealing by draining a small amount of
engine coolant (antifreeze) from the radiator drain cock.
If the cap is sealing properly, the engine coolant (anti-
freeze) will begin to drain from the coolant recovery
bottle. DO NOT REMOVE THE COOLANT PRESSURE
CAP WHEN THE COOLING SYSTEM IS HOT.Cooling System — Drain, Flush And Refill
If the engine coolant (antifreeze) is dirty or contains
visible sediment, have an authorized dealer clean and
flush with OAT coolant (antifreeze) (conforming to
MS-12106).
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
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.
Selection Of Coolant
Refer to “Fluids, Lubricants, and Genuine Parts” in
“Maintaining Your Vehicle” for further information.
598 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.
Adding Coolant
Your vehicle has been built with an improved engine
coolant (OAT coolant conforming to MS-12106) that allows
extended maintenance intervals. This engine coolant (anti-
freeze) can be used up to ten years or 150,000 miles
(240,000 km) before replacement. To prevent reducing this
extended maintenance period, it is important that you use7
MAINTAINING YOUR VEHICLE 599

•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.
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
7
MAINTAINING YOUR VEHICLE 601

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.
Engine Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. With the
engine idling, and warm to normal operating tempera-
ture, 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 cap unless checking for
engine coolant (antifreeze) freeze point or replacing en-
gine coolant (antifreeze). 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 (antifreeze) is needed to
maintain the proper level, it should be added to the
coolant bottle. Do not overfill.
Points To Remember
NOTE:
When the vehicle is stopped after a few miles/
kilometers of operation, you may observe vapor coming
from the front of the engine compartment. This is nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized 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.
602 MAINTAINING YOUR VEHICLE

•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.
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
(Continued)
7
MAINTAINING YOUR VEHICLE 603

CavityCartridge Fuse Mini Fuse Description
J5 25 Amp Clear –Passenger Door Node
J6 40 Amp Green –Anti-Lock Brake System (ABS) Pump/
Stability Control System
J7 30 Amp Pink –Anti-Lock Brake System (ABS) Valve/
Stability Control System
J8 –– –
J9 40 Amp Green –PZEV Sec Motor/Flex Fuel
J10 30 Amp Pink –Headlamp Wash Relay/Manifold Tuning
Valve
J11 30 Amp Pink – Sway Bar
J12 30 Amp Pink –Rear Blower Motor/Radiator Fan
J13 60 Amp Yellow –Ignition Off Draw (IOD) – Main
J14 40 Amp Green –Rear Defroster
J15 40 Amp Green –Front Blower
J17 40 Amp Green –Starter Solenoid
7
MAINTAINING YOUR VEHICLE 621

CavityCartridge Fuse Mini Fuse Description
J18 20 Amp Blue –Powertrain Control Module (PCM) Trans
Range
J19 60 Amp Yellow –Radiator Fan
J20 30 Amp Pink –Front Wiper LO/HI
J21 20 Amp Blue –Front/Rear Washer
J22 –– Spare
M1 –15 Amp Blue Center High-Mounted Stop Light
(CHMSL)/Switch Stop Lamp Feed
M2 –20 Amp Yellow Relay Trailer Lighting (Stoplamp)
M3 –20 Amp Yellow Frt/Rear Axle Locker Relay
M4 –2 Amp Grey Clock Spring
M5 –25 Amp Clear Power Inverter – If Equipped
M6 –20 Amp Yellow Power Outlet #1/Rain Sensor
M7 –20 Amp Yellow Power Outlet #2 (BATT/ACC SELECT)
M8 –20 Amp Yellow Front Heated Seat
622 MAINTAINING YOUR VEHICLE

Adding Fluid......................... .608
Fluid and Filter Changes ..................608
Fluid Change ......................... .608
Fluid Level Check ...................... .606
Fluid Type ........................... .605
Special Additives ...................... .606
Autostick .............................. .437
Auxiliary Electrical Outlet (Power Outlet) ........185
Auxiliary Power Outlet .....................185
Axle Lock .............................. .444
Battery ................................ .588
Keyless Transmitter Replacement (RKE) ........29
Belts, Seat ...............................53
Body Mechanism Lubrication .................593
Brake Assist System ...................... .468
Brake Control System, Electronic ..............467
Brake System ........................... .603
Anti-Lock (ABS) ....................... .465Master Cylinder
....................... .604
Parking ............................. .462
Warning Light ........................ .310
Brake/Transmission Interlock .................429
Bulb Replacement ........................ .627
Bulbs, Light ............................ .107
Calibration, Compass ..................... .326
Capacities, Fluid ......................... .632
Caps, Filler Fuel ................................ .526
Power Steering ........................ .461
Radiator (Coolant Pressure) ................601
Carbon Monoxide Warning ..................104
Cargo Light ............................ .175
Car Washes ............................ .612
Cellular Phone ...........................118
Center High Mounted Stop Light ..............631
Certification Label ........................ .528
10
INDEX 657