engine JEEP WRANGLER 2010 JK / 3.G Owner's Manual

- Engine Temperature Warning Light
• This light warns of an overheated engine condition.
• If the light turns on and a warning chime sounds while driving, safely pull over and stopthe vehicle. If the A/C system is on, turn it off. Also, shift the transmission into NEUTRAL
and idle the vehicle. If the temperature reading does not return to normal, turn the
engine off immediately.
• We recommend that you do not operate the vehicle or engine damage will occur. Have the vehicle serviced immediately.
WARNING!
A hot engine cooling system is dangerous. You or others could be badly burned by
steam or boiling coolant. You may want to call an authorized dealership for service if
your vehicle overheats.
- Brake Warning Light
• The Brake Warning light illuminates when there is either a system malfunction or theparking brake is applied. If the light is on and the parking brake is not applied, it
indicates a possible brake hydraulic malfunction, brake booster problem or an Anti-Lock
Brake System problem.
• We recommend you drive to the nearest Service Center and have the vehicle serviced immediately.
WARNING!
Driving a vehicle with the red brake light on is dangerous. Part of the brake system
may have failed. It will take longer to stop the vehicle. You could have an accident.
Have the vehicle checked immediately.
- Malfunction Indicator Light (MIL)
• Certain conditions, such as a loose or missing gas cap, poor fuel quality, etc., mayilluminate the MIL after engine start. The vehicle should be serviced if the light stays on
through several typical driving cycles. In most situations, the vehicle will drive normally
and not require towing.
• If the MIL flashes when the engine is running, serious conditions may exist that could lead to immediate loss of power or severe catalytic converter damage. We recommend
you do not operate the vehicle. Have the vehicle serviced as soon as possible if this
occurs.
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- Electronic Stability Program (ESP) Malfunction Indicator
Light/Brake Assist System (BAS) Warning Light
• If the ESP/BAS warning light comes on continuously with the engine running, a
malfunction has been detected.
• If this light remains on after several ignition cycles, and the vehicle has been driven several miles (kilometers) at speeds greater than 30 mph (48 km/h), we recommend you
drive to the nearest Service Center as soon as possible to have the problem diagnosed
and corrected.
- Charging System Light
• This light shows the status of the electrical charging system. If the charging system lightremains on, it means that the vehicle is experiencing a problem with the charging
system.
• We recommend you do not continue driving if the charging system light is on. Have the vehicle serviced immediately.
- Oil Pressure Warning Light
• This light indicates low engine oil pressure. If the light turns on while driving, stop thevehicle and shut off the engine as soon as possible. A chime will sound for four minutes
when this light turns on.
• We recommend you do not operate the vehicle or engine damage will occur. Have the vehicle serviced immediately.
- Anti-Lock Brake (ABS) Light
• This light monitors the Anti-Lock Brake System (ABS).
• If the light is not on during starting, stays on, or turns on while driving, we recommendyou drive to the nearest Service Center and have the system serviced as soon as
possible.
- Electronic Throttle Control (ETC) Light
• This light informs you of a problem with the Electronic Throttle Control (ETC) system.
• If a problem is detected, the light will come on while the engine is running. Cycle theignition key when the vehicle has completely stopped and the shift lever is placed in the
PARK position; the light should turn off.
• If the light remains lit with the engine running, your vehicle will usually be drivable; however, see an authorized dealer for service as soon as possible. If the light is flashing
when the engine is running, immediate service is required and you may experience
reduced performance, an elevated/rough idle or engine stall and your vehicle may
require towing.
- Airbag Warning Light
• If the light is not on during starting, stays on, or turns on while driving, we recommendyou drive to the nearest Service Center and have the system serviced as soon as
possible.
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WHAT TO DO IN EMERGENCIES

Fuel Cap/Loose Gas Cap Message
• If a “gas cap” message (shown as gASCAP) appears, tighten the gas cap until a “clicking”sound is heard.
• Press the odometer reset button to turn the message off.
• If the message continues to appear for more than three days after tightening the gas cap, see your authorized dealer.
Oil Change Indicator
Message
• If an “oil change” message (shown as CHAngE OIL) appears and a single chime sounds,it is time for your next required oil change.
Resetting The Light After Servicing
• Turn the ignition switch to the ON/RUN position (do not start engine).
• Fully depress the accelerator pedal three times within 10 seconds.
• Turn the ignition switch to the OFF/LOCK position.
IF YOUR ENGINE OVERHEATS
• In any of the following situations, you can reduce the potential for overheating by takingthe appropriate action.
• On the highways — slow down.
• In city traffic — while stopped, shift transmission into NEUTRAL, but do not increase engine idle speed.
NOTE: There are steps that you can take to slow down an impending overheat condition:
• If your air conditioner (A/C) is on, turn it off. The A/C system adds heat to the engine cooling system and turning the A/C off can help remove this heat.
• You can also turn the Temperature Control to maximum heat, the Mode Control to floor and the Fan Control to high. This allows the heater core to act as a supplement to the
radiator and aids in removing heat from the engine cooling system.
• If the temperature reading does not return to normal, turn the engine off immediately.
• We recommend that you do not operate the vehicle or engine damage will occur. Have the vehicle serviced immediately.
CAUTION!
Driving with a hot cooling system could damage your vehicle. If the temperature
gauge reads HOT (H), pull over and stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops back into the normal range. If the
pointer remains on HOT (H), and you hear continuous chimes, turn the engine off
immediately and call for service.
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WARNING!
You or others can be badly burned by hot engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam coming from under the hood, do not open the
hood until the radiator has had time to cool. Never try to open a cooling system
pressure cap when the radiator or coolant bottle is hot.
JACKING AND TIRE CHANGING
WARNING!
• Do not attempt to change a tire on the side of the vehicle close to moving traffic.Pull far enough off the road to avoid the danger of being hit when operating the
jack or changing the wheel.
• Getting under a jacked-up vehicle is dangerous. The vehicle could slip off the jack and fall on you. You could be crushed. Never get any part of your body under a
vehicle that is on a jack. If you need to get under a raised vehicle, take it to a
service center where it can be raised on a lift.
• The jack is designed to use as a tool for changing tires only. The jack should not be used to lift the vehicle for service purposes. The vehicle should be jacked on a
firm, level surface only. Avoid ice or slippery areas.
Jack Location
• The jack and lug wrench are located in the rear storage compartment.
Spare Tire Stowage
• Remove the tire cover, if equipped, and remove the lug nuts with the lug wrench turning
them counterclockwise. Remove wheel lock if equipped.
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WHAT TO DO IN EMERGENCIES

JUMP-STARTING
• If your vehicle has a discharged battery it can be jumpstarted using a set of jumpercables and a battery in another vehicle or by using a portable battery booster pack.
• Jump-starting can be dangerous if done improperly so please follow the procedures in this section carefully.
NOTE: When using a portable battery booster pack follow the manufacturer’s operating
instructions and precautions.
CAUTION!
Do not use a portable battery booster pack or any other booster source with a
system voltage greater than 12 Volts or damage to the battery, starter motor,
alternator or electrical system may occur.
WARNING!
When temperatures are below the freezing point, electrolyte in a discharged battery
may freeze. Do not attempt jump-starting because the battery could rupture or
explode and cause personal injury. Battery temperature must be brought above
freezing point before attempting a jump-start.
Preparations for Jump-Start
• The battery in your vehicle is located in the front of the engine compartment, behind the left headlight assembly.
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WARNING!
• Take care to avoid the radiator cooling fan whenever the hood is raised. It can startanytime the ignition switch is on. You can be injured by moving fan blades.
• Remove any metal jewelry such as watch bands or bracelets that might make an inadvertent electrical contact. You could be seriously injured.
• Batteries contain sulfuric acid that can burn your skin or eyes and generate hydrogen gas which is flammable and explosive. Keep open flames or sparks
away from the battery.
• Set the parking brake, shift the automatic transmission into PARK and turn the ignition to LOCK.
• Turn off the heater, radio, and all unnecessary electrical accessories.
• If using a another vehicle to jump-start the battery, park the vehicle within the jumper cables reach, set the parking brake and make sure the ignition is OFF.
WARNING!
Do not allow vehicles to touch each other as this could establish a ground
connection and personal injury could result.
Jump-Starting Procedure
WARNING!
Failure to follow this procedure could result in personal injury or property damage
due to battery explosion.
CAUTION!
Failure to follow these procedures could result in damage to the charging system of
the booster vehicle or the discharged vehicle.
• Connect the positive (+) end of the jumper cable to the positive (+) post of the discharged vehicle.
• Connect the opposite end of the positive (+) jumper cable to the positive (+) post of the booster battery.
• Connect the negative end (-) of the jumper cable to the negative (-) post of the booster battery.
• Connect the opposite end of the negative (-) jumper cable to a good engine ground (exposed metal part of the discharged vehicle’s engine) away from the battery and the
fuel injection system.
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WHAT TO DO IN EMERGENCIES

WARNING!
Do not connect the 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.
• 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.
• Once the engine is started, remove the jumper cables in the reverse sequence:
• Disconnect the negative (-) jumper cable from the engine ground of the vehicle with the discharged battery.
• Disconnect the negative end (-) of the jumper cable from the negative (-) post of the booster battery.
• Disconnect the opposite end of the positive (+) jumper cable from the positive (+) post of the booster battery.
• Disconnect the positive (+) end of the jumper cable from the positive (+) post of the discharged vehicle.
• Reinstall the air intake duct.
• If frequent jump-starting is required to start your vehicle you should have the battery and charging system inspected at your authorized dealer.
CAUTION!
Accessories that can be 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, the vehicle’s battery will discharge sufficiently to degrade
battery life and/or prevent the engine from starting.
EMERGENCY TOW HOOKS
• 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.
WARNING!
• Chains are not recommended for freeing a stuck vehicle. Chains may break, causing serious injury or death.
• Stand clear of vehicles when pulling with tow hooks. Tow straps and chains may break, causing serious injury.
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ENGINE COMPARTMENT3.8L Engine
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MAINTAINING YOUR VEHICLE

FLUIDS AND CAPACITIES
ComponentFluid, Lubricant, or
Genuine PartCapacities
Engine Coolant 3.8L MOPAR
®Antifreeze/
Coolant Five
Year/100,000 Mile Formula
HOAT (Hybrid Organic
Additive Technology) or
equivalent. 13 Quarts (12 Liters)
Includes heater and
coolant recovery bottle
filled to MAX level.
Engine Oil with filter 3.8L API certified 5W-20 engine oil, meeting the
requirements of Chrysler
material standard
MS-6395. Refer to your oil
filler cap for correct SAE
Grade.6 quarts (5.7 Liters)
Fuel Selection 2 Door 87 Octane 18.5 Gallons (70 Liters)
Fuel Selection 4 Door 87 Octane 22.5 Gallons (85 Liters)
Engine Oil Filter 3.8L MOPAR
®Engine Oil Filter
or equivalent. —
Spark Plug 3.8L RE14PLP5 (Gap 0.050 in
[1.27 mm]) —
Automatic Transmission MOPAR
®ATF+4®
Automatic Transmission
Fluid or equivalent
licensed ATF+4
®product. —
Manual Transmission MOPAR®Manual
Transmission Lubricant or
equivalent meeting the
requirements or Chrysler
material standard
MS–9224. —
Transfer Case MOPAR
®ATF+4®
Automatic Transmission
Fluid or equivalent
licensed ATF+4
®product. —
Axle differential (front) MOPAR®Gear & Axle
Lubricant SAE 80W–90 API
GL–5 or equivalent. —
MAINTAINING YOUR VEHICLE
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MAINTENANCE CHART
Miles: 6,000 12,000 18,000 24,000 30,000 36,000 42,000 48,000 54,000 60,000 66,000 72,000 78,000
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78
Or Kilometers:
10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000 100,000 110,000 120,000 130,000
Change the engine oil and engine oil filter. XXXXXXXXXXXXX
Rotatethetires. XXXXXXXXXXXXX
If using your vehicle for any of the following: dusty or
off-road conditions. Inspect the engine air cleaner
filter; replace if necessary. XXXX
X
Inspect the brake linings; replace if necessary. XXXXXX
Inspect the CV joints. Perform the first inspection at
12,000 miles (20,000 km) or 12 months. X
XXX
Inspect the exhaust system. Perform the first
inspection at 12,000 miles (20,000 km) or 12 months. X
XXX
Replace the engine air cleaner filter. XX
Inspect the transfer case fluid. XXXX
Inspect the front and rear axle fluid. Change if using
your vehicle for police, taxi, fleet, off-road or frequent
trailer towing. XXXX
Adjust the parking brake on vehicles equipped with
four wheel disc brakes. XX
Change the automatic transmission fluid and filter if
using your vehicle for any of the following: police,
taxi, fleet or frequent trailer towing. X
Change the manual transmission fluid if using your
vehicle for any of the following: trailer towing, snow
plowing, heavy loading, taxi, police, delivery service
(commercial service), off-road, desert operation or
more than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32 °C). XX
Inspect front suspension, tie rod ends, and boot
seals; replace if necessary. XXXXXX• Refer to the Owner's Manual on the DVD for complete maintenance schedule.
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MAINTAINING YOUR VEHICLE