radiator JEEP WRANGLER UNLIMITED 2013 User Guide

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.
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.
7 MAINTAINING YOUR VEHICLE 581

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
freezing.
• If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks. • Maintain engine coolant (antifreeze) concentration at
50% OAT engine coolant (antifreeze) (minimum) 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.582 MAINTAINING YOUR VEHICLE

Cavity Car-
tridge
Fuse Mini
Fuse Description
J1 — —
J2 30 Amp
Pink Transfer Case
Module
J3 — —
J4 25 Amp
Natural Driver Door Node
J5 25 Amp
Natural Passenger Door
Node
J6 40 Amp
Green Anti-Lock Brake
System (ABS)
Pump/Stability
Control System Cavity Car-
tridge
Fuse Mini
Fuse Description
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
7 MAINTAINING YOUR VEHICLE 599

Cavity Car-
tridge
Fuse Mini
Fuse Description
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
J18 20 Amp
Blue Powertrain Control
Module (PCM)
Trans Range
J19 60 Amp
Yellow Radiator Fan Cavity Car-
tridge
Fuse Mini
Fuse Description
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 Relay600 MAINTAINING YOUR VEHICLE

Fluid Level Check ..................... .586
Fluid Type .......................... .585
Special Additives ...................... .585
Autostick .............................. .426
Auxiliary Electrical Outlet (Power Outlet) ....... .182
Auxiliary Power Outlet .................... .182
Axle Lock .............................. .433
Battery ................................ .570
Keyless Transmitter Replacement (RKE) ........27
Belts, Seat ...............................48
Body Mechanism Lubrication ................ .572
Brake Assist System ...................... .457
Brake Control System, Electronic ............. .456
Brake System ........................... .583
Anti-Lock (ABS) ...................... .455
Master Cylinder ....................... .583
Parking ............................. .452
Warning Light ........................ .302 Brake/Transmission Interlock ................ .419
Break-In Recommendations, New Vehicle .........98
Bulb Replacement ........................ .606
Bulbs, Light ............................ .103
Calibration, Compass ..................... .318
Capacities, Fluid ......................... .610
Caps, Filler
Fuel ............................... .510
Power Steering ....................... .451
Radiator (Coolant Pressure) .............. .580
Carbon Monoxide Warning ................. .100
Cargo Light ............................ .172
Car Washes ............................ .592
Cellular Phone ...........................114
Center High Mounted Stop Light ............. .609
Certification Label ........................ .513
Chains, Tire ............................ .492
Changing A Flat Tire ...................... .540
10 INDEX 635

Chart, Tire Sizing ........................ .473
Check Engine Light
(Malfunction Indicator Light) ...............311
Checking Your Vehicle For Safety ...............99
Checks, Safety ............................99
Child Restraint ............................76
Child Safety Locks .........................40
Clean Air Gasoline ....................... .507
Cleaning
Wheels ............................. .593
Climate Control ......................... .391
Clock ................................. .337
Cold Weather Operation ....................411
Compact Disc (CD) Maintenance ............. .390
Compact Spare Tire ....................... .487
Compass .............................. .315
Compass Calibration ...................... .318
Compass Variance ........................ .317
Computer, Trip/Travel ..................... .315 Connector
UCI ............................... .382
Universal Consumer Interface (UCI) ........ .382
Console ............................... .189
Console, Floor .......................... .189
Contract, Service ......................... .627
Coolant Pressure Cap (Radiator Cap) .......... .580
Cooling System .......................... .577
Adding Coolant (Antifreeze) .............. .579
Coolant Capacity ...................... .610
Coolant Level ........................ .581
Disposal of Used Coolant ................ .581
Drain, Flush, and Refill ................. .578
Inspection ........................... .577
Points to Remember .................... .581
Pressure Cap ......................... .580
Radiator Cap ......................... .580
Selection of Coolant (Antifreeze) ........... .578
Corrosion Protection ...................... .591636 INDEX

Oil Pressure Light ........................ .301
Onboard Diagnostic System ................. .562
Operating Precautions ..................... .562
Operator Manual (Owner’s Manual) .............6
Outside Rearview Mirrors ...................112
Overdrive .............................. .427
Overdrive OFF Switch ..................... .427
Overheating, Engine ...................... .305
Owner’s Manual (Operator Manual) .............6
Paint Care ............................. .591
Panic Alarm ..............................24
Parking Brake ........................... .452
Passing Light ........................... .170
Personal Settings ......................... .331
Pets ....................................98
Pets, Transporting ..........................98
Phone, Cellular ...........................114
Phone, Hands-Free (Uconnect™) ...............114 Placard, Tire and Loading Information ......... .478
Power
Door Locks ............................38
Inverter ............................. .186
Mirrors ..............................113
Steering ............................ .450
Windows .............................41
Pregnant Women and Seat Belts ................61
Preparation for Jacking .................... .542
Pretensioners
Seat Belts .............................59
Programmable Electronic Features ............ .331
Radial Ply Tires ......................... .485
Radiator Cap (Coolant Pressure Cap) .......... .580
Radio Operation ......................... .391
Rear Axle (Differential) .................... .590
Rear Swing Gate ...........................44
Rear Window Defroster .................... .294
10 INDEX 645