Jeep Wrangler (2018 year). Instruction

WARNING!

Fast spinning tires can be dangerous. Forces generated
by excessive wheel speeds may cause damage, or even
failure, of the axle and tires. A tire could explode and
injure someone. Do not spin your vehicle’s wheels
faster than 30 mph (48 km/h) or for longer than 30
seconds continuously without stopping when you are
stuck and do not let anyone near a spinning wheel, no
matter what the speed.

CAUTION!

• Racing the engine or spinning the wheels may lead

to transmission overheating and failure. Allow the
engine 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.

• When “rocking” a stuck vehicle by shifting between

DRIVE/SECOND 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 transmis-
sion shifting occurring).

406

IN CASE OF EMERGENCY

TOWING A DISABLED VEHICLE

This section describes procedures for towing a disabled

vehicle using a commercial towing service. If the transmis-

sion and drivetrain are operable, disabled vehicles may

also be towed as described under “Recreational Towing” in

the “Starting And Operating” section.

Towing Condition

Wheels OFF The Ground

4WD MODELS

Flat Tow

NONE

See instructions under “Recreational Towing” in

“Starting And Operating”.

• Automatic Transmission in PARK

• Manual Transmission in gear ( NOT in NEU-

TRAL)

• Transfer Case in NEUTRAL

• Tow in forward direction

Wheel Lift Or Dolly Tow

Front

NOT ALLOWED

Rear

NOT ALLOWED

Flatbed

ALL

BEST METHOD

Proper towing or lifting equipment is required to prevent

damage to your vehicle. Use only tow bars and other

equipment designed for this purpose, following equipment

manufacturer’s instructions. Use of safety chains is man-

datory. Attach a tow bar or other towing device to main

structural members of the vehicle, not to bumpers or

associated brackets. State and local laws regarding vehicles

under tow must be observed.

If you must use the accessories (wipers, defrosters, etc.)

while being towed, the ignition must be in the ON/RUN

position, not the ACC position.
If the key fob is unavailable, or the vehicle’s battery is

discharged, refer to

⬙Manual Park Release⬙ in this section

for instructions on shifting the transmission out of PARK in

order to move the vehicle.

IN CASE OF EMERGENCY

407

CAUTION!

• Do not use sling type equipment when towing.

Vehicle damage may occur.

• When securing the vehicle to a flat bed truck, do not

attach to front or rear suspension components. Dam-
age to your vehicle may result from improper towing.

Four–Wheel Drive Models

The manufacturer recommends towing with all wheels
OFF

the ground. Acceptable methods are to tow the vehicle

on a flatbed or with one end of the vehicle raised and the

opposite end on a towing dolly.
If flatbed equipment is not available and the transfer case

is operable, the vehicle may be towed (in the forward

direction, with ALL wheels on the ground), IF the transfer

case is in NEUTRAL (N) and the transmission is in PARK

(for automatic transmissions) or in gear ( NOT in NEU-
TRAL

, for manual transmissions). Refer to “Recreational

Towing” in “Starting And Operating” for detailed instruc-

tions.

CAUTION!

• Front or rear wheel lifts must not be used (if the

remaining wheels are on the ground). Internal dam-
age to the transmission or transfer case will occur if
a front or rear wheel lift is used when towing.

• Towing this vehicle in violation of the above require-

ments can cause severe transmission and/or transfer
case damage. Damage from improper towing is not
covered under the New Vehicle Limited Warranty.

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.

408

IN CASE OF EMERGENCY

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, causing 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.

ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS)

This vehicle is equipped with an Enhanced Accident

Response System.
Please refer to “Occupant Restraint Systems” in “Safety”

for further information on the Enhanced Accident Re-

sponse System (EARS) function.

EVENT DATA RECORDER (EDR)

This vehicle is equipped with an Event Data Recorder

(EDR). The main purpose of an EDR is to record data that

will assist in understanding how a vehicle’s systems per-

formed under certain crash or near crash-like situations,

such as an air bag deployment or hitting a road obstacle.
Please refer to “Occupant Restraint Systems” in “Safety”

for further information on the Event Data Recorder (EDR).

IN CASE OF EMERGENCY

409

SCHEDULED SERVICING

Your vehicle is equipped with an automatic oil change

indicator system. The oil change indicator system will

remind you that it is time to take your vehicle in for

scheduled maintenance.
Based on engine operation conditions, the oil change

indicator message will illuminate. This means that service

is required for your vehicle. Operating conditions such as

frequent short-trips, trailer tow, extremely hot or cold

ambient temperatures will influence when the “Change

Oil” or “Oil Change Required” message is displayed.

Severe Operating Conditions can cause the change oil

message to illuminate as early as 3,500 miles (5,600 km)

since last reset. Have your vehicle serviced as soon as

possible, within the next 500 miles (805 km).
On vehicles equipped with instrument cluster display, “Oil

Change Required” will be displayed and a single chime

will sound, indicating that an oil change is necessary.
On non-instrument cluster display equipped vehicles,

“Change Oil” will flash in the instrument cluster odometer

and a single chime will sound, indicating that an oil change

is necessary.

An authorized dealer will reset the oil change indicator

message after completing the scheduled oil change. If a

scheduled oil change is performed by someone other than

an authorized dealer, the message can be reset by referring

to the steps described under “Instrument Cluster Display”

in “Getting To Know Your Instrument Panel” for further

information.

NOTE:

Under no circumstances should oil change inter-

vals exceed 10,000 miles (16,000 km), twelve months or 350

hours of engine run time, whichever comes first. The 350

hours of engine run or idle time is generally only a concern

for fleet customers.

Severe Duty All Models

Change Engine Oil at 4,000 miles (6,500 km) or 350 hours of

engine run time if the vehicle is operated in a dusty and off

road environment or is operated predominately at idle or

only very low engine RPM’s. This type of vehicle use is

considered Severe Duty.

SERVICING AND MAINTENANCE

413

Once A Month Or Before A Long Trip:
• Check engine oil level
• Check windshield washer fluid level
• Check the tire inflation pressures and look for unusual

wear or damage

• Check the fluid levels of the coolant reservoir, brake

master cylinder, and power steering, and fill as needed

• Check function of all interior and exterior lights

Maintenance Plan

Required Maintenance Intervals

Refer to the maintenance plan on the following pages for

the required maintenance intervals.

At Every Oil Change Interval As Indicated By Oil

Change Indicator System:

• Change oil and filter
• Rotate the tires

Rotate at the first sign of irregular wear, even if it
occurs before the oil indicator system turns on

• Inspect battery and clean and tighten terminals as

required

• Inspect brake pads, shoes, rotors, drums, hoses and

park brake

• Inspect engine cooling system protection and hoses
• Inspect exhaust system
• Inspect engine air cleaner if using in dusty or

off-road conditions

• Inspect all door latches for presence of grease,

reapply if necessary.

414

SERVICING AND MAINTENANCE

Mileage or time passed

(whichever comes first)

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

100,000

10,000

120,000

130,000

140,000

150,000

Or Years:

Or Kilometers:

32,000

48,000

64,000

80,000

96,000

12,000

128,000

144,000

160,000

176,000

192,000

208,000

224,000

240,000

Additional Inspections

Inspect the CV/Universal joints.

Inspect front suspension, tie rod
ends, and replace if necessary.

Inspect the front and rear axle
fluid.

Inspect the brake linings, replace
as necessary

Adjust parking brake on vehicles
equipped with four wheel disc
brakes.

Inspect transfer case fluid.

Additional Maintenance

Replace engine air cleaner filter.

Replace air conditioning/cabin air
filter.

Replace Spark Plugs –
2.0L Engine**

SERVICING AND MAINTENANCE

415

Mileage or time passed

(whichever comes first)

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

100,000

10,000

120,000

130,000

140,000

150,000

Or Years:

Or Kilometers:

32,000

48,000

64,000

80,000

96,000

12,000

128,000

144,000

160,000

176,000

192,000

208,000

224,000

240,000

Replace spark plugs – 3.6L En-
gine**

Flush and replace the engine, in-
tercooler (if equipped), battery (if
equipped), and Motor Generator
Unit (MGU) (if equipped) coolant
at 10 years or 150,000 miles
(240,000 km) whichever comes
first.

Change the manual transmission
fluid if using your vehicle for any of
the following: trailer towing, snow
plowing, heavy loading, taxi, po-
lice, 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).

416

SERVICING AND MAINTENANCE

Mileage or time passed

(whichever comes first)

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

100,000

10,000

120,000

130,000

140,000

150,000

Or Years:

Or Kilometers:

32,000

48,000

64,000

80,000

96,000

12,000

128,000

144,000

160,000

176,000

192,000

208,000

224,000

240,000

Change transfer case fluid if using
your vehicle for any of the follow-
ing: police, taxi, fleet, or frequent
trailer towing.

Inspect and replace PCV valve if
necessary.

Change front and rear axle fluid if
using your vehicle for police, taxi,
fleet, off-road or frequent trailer
towing.

** The spark plug change interval is mileage based only,

yearly intervals do not apply.

SERVICING AND MAINTENANCE

417

WARNING!

• You can be badly injured working on or around a

motor vehicle. Do only service work for which you
have the knowledge and the right equipment. If you
have any doubt about your ability to perform a
service job, take your vehicle to a competent me-
chanic.

• Failure to properly inspect and maintain your vehicle

could result in a component malfunction and effect
vehicle handling and performance. This could cause
an accident.

Heavy Duty Use Of The Vehicle

Change engine oil at 4,000 miles (6,500 km) or 350 hours of

engine run time if the vehicle is operated in a dusty and off

road environment or is operated predominately at idle or

only very low engine RPM’s. This type of vehicle use is

considered Severe Duty.

418

SERVICING AND MAINTENANCE

ENGINE COMPARTMENT

2.0L Engine

1 — Power Distribution Center (Fuses)

8 — Power Pack Unit Pressure Cap — If Equipped

2 — Battery

9 — Power Pack Unit Pressure Reservoir — If Equipped

3 — Engine Oil Dipstick

10 — Washer Fluid Reservoir

4 — Engine Oil Fill

11 — Intercooler/Motor Generator Unit (If Equipped) Coolant Pressure Cap

5 — Engine Coolant Reservoir

12 — Intercooler/Motor Generator Unit (If Equipped) Coolant Reservoir

6 — Engine Coolant Pressure Cap

13 — Power Steering Fluid Reservoir

7 — Brake Fluid Reservoir

14 — Engine Air Cleaner

SERVICING AND MAINTENANCE

419

3.6L Engine

1 — Power Distribution Center (Fuses)

8 — Power Pack Unit Pressure Cap — If Equipped

2 — Battery

9 — Power Pack Unit Pressure Reservoir — If Equipped

3 — Engine Oil Dipstick

10 — Washer Fluid Reservoir

4 — Engine Oil Fill

11 — Motor Generator Unit Coolant Pressure Cap — If Equipped

5 — Engine Coolant Reservoir

12 — Motor Generator Unit Coolant Reservoir — If Equipped

6 — Engine Coolant Pressure Cap

13 — Power Steering Fluid Reservoir

7 — Brake Fluid Reservoir

14 — Engine Air Cleaner

420

SERVICING AND MAINTENANCE

Checking Oil Level

To ensure proper lubrication of your vehicle’s engine, the

engine oil must be maintained at the correct level. The

engine oil level should be checked five minutes after a

warmed up engine has been shut off.
Checking the oil while the vehicle is on level ground will

improve the accuracy of the oil level readings. Always

maintain the oil level within the SAFE zone on the dipstick.

Adding 1 quart (0.95 liters) of oil when the reading is at the

bottom of the crosshatch zone will result in a reading at the

top of the crosshatch zone on these engines.

CAUTION!

Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage your
engine.

Adding Washer Fluid

The fluid reservoir for the windshield washers and the rear

window washer (if equipped) is shared. The fluid reservoir

is located in the engine compartment. Be sure to check the

fluid level at regular intervals. Fill the reservoir with

windshield washer solvent only (not radiator antifreeze).

When refilling the washer fluid reservoir, take some

washer fluid and apply it to a cloth or towel and wipe clean

the wiper blades; this will help blade performance.
To prevent freeze-up of your windshield washer system in

cold weather, select a solution or mixture that meets or

exceeds the temperature range of your climate. This rating

information can be found on most washer fluid containers.

WARNING!

Commercial windshield washer solvents are flam-
mable. They could ignite and burn you. Care must be
exercised when filling or working around the washer
solution.

Maintenance-Free Battery

Your vehicle is equipped with a maintenance-free battery.

You will never have to add water, nor is periodic mainte-

nance required.

SERVICING AND MAINTENANCE

421

Jeep Wrangler (2018 year). Instruction - part 26