engine coolant JEEP WRANGLER 2012 JK / 3.G User Guide

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
reserve tank.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precaution.
Never add engine coolant (antifreeze) when the en-
gine 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.
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 (antifreeze) 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.
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MAINTAINING YOUR VEHICLE 533

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 bottle.
•Check the engine coolant (antifreeze) freeze point in
the radiator and in the coolant recovery bottle. If
engine coolant (antifreeze) needs to be added, the
contents of the coolant recovery bottle must also be
protected against freezing.
•If frequent engine coolant (antifreeze) additions are
required, or if the level in the recovery bottle does not
drop when the engine cools, the cooling system should
be pressure-tested for leaks.
•Maintain the engine coolant (antifreeze) concentration
at 50% HOAT engine coolant (antifreeze) (minimum)
and distilled water for proper corrosion protection of
your engine which contains aluminum components.
534 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES
U.S.Metric
Fuel (Approximate) — Two Door Models 18.6 Gallons70 Liters
Fuel (Approximate) — Four Door Models 22.5 Gallons85 Liters
Engine Oil with Filter
3.6 Liter Engine 6 Quarts5.6 Liters
Cooling System *
3.6 Liter Engine (MOPAR Antifreeze/Engine Coolant
5 Year/100,000 Mile Formula or equivalent) 10.5 Quarts
9.9 Liters
* Includes coolant recovery bottle filled to MAX level.
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MAINTAINING YOUR VEHICLE 559

FLUIDS, LUBRICANTS AND GENUINE PARTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine Coolant MOPARAntifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid
Organic Additive Technology) or equivalent.
Engine Oil Use API Certified SAE 5W-30 Engine Oil, meeting the requirements of
Chrysler Material Standard MS-6395. Refer to your engine oil filler cap for
correct SAE grade.
Engine Oil Filter MOPAREngine Oil Filter or equivalent.
Spark Plugs RER8ZWYCB4 (Gap 0.043 in [1.1 mm])
Fuel Selection 87 Octane
560 MAINTAINING YOUR VEHICLE

Once A Month
•Check tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of coolant reservoir, brake
master cylinder, power steering and transmission and
add as needed.
•Check all lights and other electrical items for correct
operation.At Each Oil Change
•Change the engine oil filter.
•Inspect the brake hoses and lines.
•Check the manual transmission fluid level.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
Required Maintenance Intervals
Refer to the Maintenance Schedules on the following
pages for the required maintenance intervals.
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S566 MAINTENANCE SCHEDULES

72,000 Miles (117,000 km) or
54 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
❏ Rotate the tires, rotate at the first sign of
irregular wear, even if it occurs before
72,000 miles (117 000 km).
❏ Inspect all door latches for presence of
grease, reapply if necessary.
❏ Inspect the CV joints.
❏ Inspect exhaust system.
❏ Inspect the front and rear axle fluid.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
80,000 Miles (130,000 km) or 60 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.
❏ Rotate the tires, rotate at the first sign of irregular wear, even if it occurs before
80,000 miles (130 000 km).
❏ Inspect all door latches for presence of grease, reapply if necessary.
❏ If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏ Replace the air conditioning filter.
❏ Flush and replace the engine coolant at 60 months or 104,000 miles (169 000 km) whichever
comes first.
❏ Inspect the brake linings, replace if necessary.
❏ Inspect the front suspension, tie rod ends and boot seals for cracks or leaks and all parts for
damage, wear, improper looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
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S572 MAINTENANCE SCHEDULES

104,000 Miles (169,000 km) or
78 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
❏ Rotate the tires, rotate at the first sign of
irregular wear, even if it occurs before
104,000 miles (169 000 km).
❏ Inspect all door latches for presence of
grease, reapply if necessary.
❏ Flush and replace the engine coolant at
104,000 miles (169 000 km) or 60 months
whichever comes first.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
112,000 Miles (182,000 km) or 84 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.
❏ Rotate the tires, rotate at the first sign of irregular wear, even if it occurs before
112,000 miles (182 000 km).
❏ Inspect all door latches for presence of grease, reapply if necessary.
❏ If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏ Replace the air conditioning filter.
❏ Inspect the brake linings, replace if necessary.
❏ Inspect the front suspension, tie rod ends and boot seals for cracks or leaks and all parts for
damage, wear, improper looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order #Dealer Code
Signature, Authorized Service Center
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SMAINTENANCE SCHEDULES 575

ABS (Anti-Lock Brake System)............272,417
Adding Engine Coolant (Antifreeze) .......... 532
Adding Fuel ........................... 465
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 520
Air Conditioner Maintenance ............... 522
Air Conditioning ........................ 354
Air Conditioning Controls ................. 354
Air Conditioning Filter .................365,523
Air Conditioning Refrigerant ............... 523
Air Conditioning System ................354,358
Air Conditioning, Operating Tips ............ 366
Air Filter .............................. 520
Air Pressure, Tires ....................... 444
Airbag ................................ 58
Airbag Deployment ....................... 67
Airbag Light ..................... 65,69,87,273
Airbag Maintenance ....................... 69
Airbag, Side ............................ 65
Alarm (Security Alarm) .................... 19 Alarm Light
........................... 274
Alterations/Modifications, Vehicle ............. 9
Antenna, Satellite Radio ................317,342
Anti-Lock Brake System (ABS) .............. 417
Anti-Lock Warning Light .................. 272
Antifreeze (Engine Coolant) ................ 559
Appearance Care ........................ 541
Arming Theft System (Security Alarm) ......... 19
Assistance Towing ....................... 114
Auto Down Power Windows ................ 40
Automatic Door Locks ..................... 37
Automatic Oil Change Indicator ............. 292
Automatic Temperature Control (ATC) ......... 358
Automatic Transmission ................382,537
Fluid and Filter Changes ............... 537
Fluid Level Check .................... 538
Fluid Type ......................... 537
Special Additives ..................... 537
Autostick ............................. 389
592 INDEX

Defroster, Rear Window................... 261
Defroster, Windshield ................87,356,362
Delay (Intermittent) Wipers ................. 156
Diagnostic System, Onboard ................ 514
Dimmer Switch, Headlight ................. 152
Dipsticks Oil (Engine) ........................ 518
Power Steering ...................... 413
Disabled Vehicle Towing ................... 508
Disarming, Theft System ................... 20
Disposal Engine Oil ......................... 520
Used Coolant (Antifreeze) .............. 533
Door Locks ............................. 34
Door Locks, Automatic .................... 37
Doors ................................. 29
Driver’s Seat Back Tilt .................... 137 Driving
............................... 398
Off-Pavement ....................... 399
Off-Road .......................... 399
Dual Top .............................. 170
Electric Remote Mirrors .................... 98
Electrical Outlet, Auxiliary (Power Outlet) ...... 162
Electrical Power Outlets ................... 162
Electronic Brake Control System ............. 419
Brake Assist System ................... 420
Electronic Roll Mitigation ............... 424
Traction Control System ................ 419
Electronic Roll Mitigation (ERM) ............. 424
Electronic Speed Control (Cruise Control) ...... 159
Electronic Stability Control (ESC) ............. 425
Electronic Throttle Control Warning Light ...... 283
Electronic Vehicle Information
Center (EVIC) ....................... 283,289
Emergency Brake ........................ 414
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INDEX 595

Fuel System Caution................... 463,465
Fuses ................................ 549
Gas Cap (Fuel Filler Cap) ............465,466,514
Gasoline (Fuel) ......................... 460
Gasoline, Reformulated ................... 460
Gauges Coolant Temperature .................. 274
Fuel .............................. 269
Odometer .......................... 277
Speedometer ........................ 269
Tachometer ......................... 273
Gear Ranges ........................ 377,384
Gear Select Lever Override ................. 507
General Information ................. 18,130,459
Glass Cleaning .......................... 545
Gross Axle Weight Rating ...............467,470
Gross Vehicle Weight Rating .............467,469
GVWR ............................... 467 Hands-Free Phone (Uconnect™)
.............. 99
HardTop ............................. 176
Hard Top Removal ....................... 184
Hard Top, Modular ...................... 176
Hazard Warning Flasher ................... 492
Head Restraints ......................... 142
Head Rests ............................ 142
Headlights Bulb Replacement .................... 556
Dimmer Switch ...................... 152
Replacing .......................... 556
Switch ............................ 150
Heated Seats ........................... 141
Heater ............................... 354
Heater, Engine Block ..................... 375
High Beam Indicator ..................... 270
Hill Descent Control ..................... 431
Hill Descent Control Indicator ............... 431
Hill Start Assist ......................... 420
598 INDEX