2015 JEEP WRANGLER engine

WARNING!
Do not connect the jumper cable to the negative (-) post
of the discharged battery. The resulting electrical spark
could cause the battery to explode and could result in
personal injury. Only use the specific ground point, do
not use any other exposed metal parts.
5. Start the engine in the vehicle that has the booster
battery, let the engine idle a few minutes, and then
start the engine in the vehicle with the discharged
battery.
6. Once the engine is started, remove the jumper cables
in the reverse sequence:
Disconnecting The Jumper Cables
1. Disconnect the negative(-)end of the jumper cable
from the engine ground of the vehicle with the dis-
charged battery.
2. Disconnect the opposite end of the negative(-)jumper
cable from the negative(-)post of the booster battery.
3. Disconnect the positive(+)end of the jumper cable
from the positive(+)post of the booster battery.
4. Disconnect the opposite end of the positive(+)jumper
cable from the positive(+)post of the vehicle with the
discharged battery.
If frequent jump-starting is required to start your vehicle
you should have the battery and charging system in-
spected at your authorized dealer.
CAUTION!
Accessories plugged into the vehicle power outlets
draw power from the vehicle’s battery, even when not
in use (i.e., cellular phones, etc.). Eventually, if
plugged in long enough without engine operation,
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WHAT TO DO IN EMERGENCIES 573

CAUTION!(Continued)
the vehicle’s battery will discharge sufficiently to
degrade battery life and/or prevent the engine from
starting.
FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand or snow, it
can often be moved using a rocking motion. Turn the
steering wheel right and left to clear the area around the
front wheels. Then shift back and forth between DRIVE
and REVERSE (with automatic transmission) or 2nd gear
and REVERSE (with manual transmission), while gently
pressing the accelerator. Use the least amount of accel-
erator pedal pressure that will maintain the rocking
motion, without spinning the wheels, or racing the
engine.
CAUTION!
Racing the engine or spinning the wheels may lead to
transmission overheating and failure. Allow the en-
gine to idle with the transmission in NEUTRAL for at
least one minute after every five rocking-motion
cycles. This will minimize overheating and reduce
the risk of clutch or transmission failure during
prolonged efforts to free a stuck vehicle.
NOTE:Press the#ESC Off#switch, to place the Electronic
Stability Control (ESC) system in#Partial Off#mode,
before rocking the vehicle. Refer to “Electronic Brake
Control” in “Starting And Operating” for further infor-
mation. Once the vehicle has been freed, press the#ESC
Off#switch again to restore#ESC On#mode.
574 WHAT TO DO IN EMERGENCIES

CAUTION!
•When “rocking” a stuck vehicle by shifting be-
tween DRIVE/2nd gear and REVERSE, do not spin
the wheels faster than 15 mph (24 km/h), or drive-
train damage may result.
•Revving the engine or spinning the wheels too fast
may lead to transmission overheating and failure.
It can also damage the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear (no trans-
mission shifting occurring).
WARNING!
Fast spinning tires can be dangerous. Forces gener-
ated by excessive wheel speeds may cause damage, or
even failure, of the axle and tires. A tire could
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WARNING!(Continued)
explode and injure someone. Do not spin your vehi-
cle’s wheels faster than 30 mph (48 km/h) or for
longer than 30 seconds continuously without stop-
ping when you are stuck and do not let anyone near
a spinning wheel, no matter what the speed.
EMERGENCY TOW HOOKS — IF EQUIPPED
If your vehicle is equipped with tow hooks, they are
mounted in the front and the rear.
NOTE:For off-road recovery, it is recommended to use
both of the front tow hooks to minimize the risk of
damage to the vehicle. Always use an appropriately rated
tow strap.
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WHAT TO DO IN EMERGENCIES 575

WARNING!
•Do not use a chain for freeing a stuck vehicle.
Chains may break, causing serious injury or death.
•Stand clear of vehicles when pulling with tow
hooks. Tow straps may become disengaged, caus-
ing serious injury.
CAUTION!
Tow hooks are for emergency use only, to rescue a
vehicle stranded off road. Do not use tow hooks for
tow truck hookup or highway towing. You could
damage your vehicle. Tow straps are recommended
when towing the vehicle, chains may cause vehicle
damage.
SHIFT LEVER OVERRIDE
If a malfunction occurs and the shift lever cannot be
moved out of the PARK position, you can use the
following procedure to temporarily move the shift lever:
1. Turn the engine OFF.
2. Firmly apply the parking brake.
3. Using a small screwdriver or similar tool, remove the
shift lever override access cover (located to the right of
the shift lever).
4. Turn the ignition to the ACC or ON/RUN position,
but do not start the engine.
576 WHAT TO DO IN EMERGENCIES

MAINTAINING YOUR VEHICLE
CONTENTS
!ENGINE COMPARTMENT — 3.6L..........583
!ONBOARD DIAGNOSTIC SYSTEM — OBD II . . .584
▫Loose Fuel Filler Cap Message............584
!EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS..........................585
!REPLACEMENT PARTS..................586
!DEALER SERVICE......................586
!MAINTENANCE PROCEDURES...........587
▫Engine Oil..........................588
▫Engine Oil Filter......................591
▫Engine Air Cleaner Filter................591
▫Accessory Drive Belt Inspection...........595
▫Maintenance-Free Battery...............596
▫Air Conditioner Maintenance.............598
▫Body Lubrication.....................601
▫Windshield Wiper Blades...............602
▫Adding Washer Fluid..................608
▫Exhaust System......................609
▫Cooling System......................611
▫Brake System........................617
7

▫Automatic Transmission — If Equipped.....619
▫Clutch Hydraulic System (Manual Transmission)
— If Equipped.......................623
▫Manual Transmission — If Equipped.......623
▫Transfer Case........................624
▫Front/Rear Axle Fluid..................625
▫Appearance Care And Protection From
Corrosion...........................625
!FUSES..............................633
▫Totally Integrated Power Module..........634
!VEHICLE STORAGE....................640
!REPLACEMENT BULBS.................641
!BULB REPLACEMENT..................642
▫Headlamp..........................642
▫Front Park/Turn Signal.................643
▫Front Side Marker.....................643
▫Front Fog Lamp......................644
▫Rear Tail, Stop, Turn Signal, And Backup
Lamp.............................644
▫Center High-Mounted Stop Lamp (CHMSL) . . .645
!FLUID CAPACITIES....................646
!FLUIDS, LUBRICANTS AND GENUINE
PA R T S . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..647
▫Engine.............................647
▫Chassis............................649
582 MAINTAINING YOUR VEHICLE

ENGINE COMPARTMENT — 3.6L
1 — Integrated Power Module (Fuses)7 — Washer Fluid Reservoir2—Battery8—EngineCoolantReservoir3 — Engine Oil Dipstick9 — Air Cleaner Filter4 — Automatic Transmission Dipstick (Under Engine Cover) 10 — Coolant Pressure Cap5 — Engine Oil Fill11 — Power Steering Fluid Reservoir6 — Brake Fluid Reservoir
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MAINTAINING YOUR VEHICLE 583

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light” (MIL). It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.
CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and driveability.
The vehicle must be serviced before any emissions
tests can be performed.
•If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose, improp-
erly installed, or damaged. A “gASCAP” message will be
displayed in the odometer. Tighten the gas cap until a
#clicking#sound is heard. This is an indication that the
gas cap is properly tightened. Press the odometer reset
button to turn the message off. If the problem persists,
584 MAINTAINING YOUR VEHICLE