Jeep Wrangler (2018 year). Manual

VEHICLE IDENTIFICATION NUMBER

The Vehicle Identification Number (VIN) is found on the

left front corner of the A pillar, visible from outside of the

vehicle through the windshield. This number also appears

underbody, on the right side of the frame rail near the

center of the vehicle, as well as on the Automobile Infor-

mation Disclosure Label affixed to a window on your

vehicle. Save this label for a convenient record of your

vehicle identification number and optional equipment.
The VIN is also stamped on either right or left hand side of

the engine block.

NOTE:

It is illegal to remove or alter the VIN plate.

BRAKE SYSTEM

Your vehicle is equipped with dual hydraulic brake sys-

tems. If either of the two hydraulic systems loses normal

capability, the remaining system will still function. How-

ever, there will be some loss of overall braking effective-

ness. You may notice increased pedal travel during appli-

cation, greater pedal force required to slow or stop, and

potential activation of the Brake Warning Light.
In the event power assist is lost for any reason (i.e.,

repeated brake applications with the engine off) the brakes

will still function. However, the effort required to brake the

vehicle will be much greater than that required with the

power system operating.

WHEEL AND TIRE TORQUE SPECIFICATIONS

Proper lug nut/bolt torque is very important to ensure that

the wheel is properly mounted to the vehicle. Any time a

wheel has been removed and reinstalled on the vehicle, the

lug nuts/bolts should be torqued using a properly cali-

brated torque wrench using a high quality six sided (hex)

deep wall socket.

Vehicle Identification Number

486

TECHNICAL SPECIFICATIONS

Torque Specifications

Lug Nut/Bolt

Torque

**Lug Nut/Bolt

Size

Lug Nut/Bolt

Socket Size

130 Ft-Lbs (176

N·m)

M14 x 1.50

22 mm

**Use only your authorized dealer recommended lug nuts/

bolts and clean or remove any dirt or oil before tightening.
Inspect the wheel mounting surface prior to mounting the

tire and remove any corrosion or loose particles.

Spare Tire Torque Specifications

Lug Nut/Bolt

Torque

**Lug Nut/Bolt

Size

Lug Nut/Bolt

Socket Size

59 Ft-Lbs (80

N·m)

M14 x 1.50

22 mm

Spare tire torque is for the spare tire carrier located on the

tailgate.

Tighten the lug nuts/bolts in a star pattern until each

nut/bolt has been tightened twice. Ensure that the socket is

fully engaged on the lug nut/bolt (do not insert it half-

way).

Wheel Mounting Surface

TECHNICAL SPECIFICATIONS

487

After 25 miles (40 km), check the lug nut/bolt torque to be

sure that all the lug nuts/bolts are properly seated against

the wheel.

WARNING!

To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts fully until the vehicle has been
lowered. Failure to follow this warning may result in
personal injury.

FUEL REQUIREMENTS

2.0L Engine

This engine is designed to meet all emis-

sion regulations, and provide satisfac-

tory fuel economy and performance

when using high-quality unleaded

“Regular” gasoline having a posted oc-

tane number of 87 as specified by the

(R+M)/2 method. For optimal perfor-

mance the use of 91 or higher octane “Premium” gasoline

is recommended in these engines.
While operating on gasoline with the required octane

number, hearing a light knocking sound from the engine is

not a cause for concern. However, if the engine is heard

making a heavy knocking sound, see your dealer immedi-

ately. Use of gasoline with a lower than recommended

octane number can cause engine failure and may void or

not be covered by the New Vehicle Limited Warranty.
Poor quality gasoline can cause problems such as hard

starting, stalling, and hesitations. If you experience these

symptoms, try another brand of gasoline before consider-

ing service for the vehicle.

Torque Patterns

488

TECHNICAL SPECIFICATIONS

3.6L Engine

This engine is designed to meet all emis-

sions regulations and provide excellent

fuel economy and performance when

using high-quality unleaded “Regular”

gasoline having an octane rating of 87 as

specified by the (R+M)/2 method. The

use of higher octane “Premium” gaso-

line will not provide any benefit over “Regular” gasoline in

these engines.
While operating on gasoline with an octane number of 87,

hearing a light knocking sound from the engine is not a

cause for concern. However, if the engine is heard making

a heavy knocking sound, see your dealer immediately. Use

of gasoline with an octane number lower than 87 can cause

engine failure and may void or not be covered by the New

Vehicle Limited Warranty.
Poor quality gasoline can cause problems such as hard

starting, stalling, and hesitations. If you experience these

symptoms, try another brand of gasoline before consider-

ing service for the vehicle.

Reformulated Gasoline

Many areas of the country require the use of cleaner burning

gasoline referred to as “Reformulated Gasoline”. Reformu-

lated gasoline contains oxygenates and are specifically

blended to reduce vehicle emissions and improve air quality.
The use of reformulated gasoline is recommended. Prop-

erly blended reformulated gasoline will provide improved

performance and durability of engine and fuel system

components.

Materials Added To Fuel

Besides using unleaded gasoline with the proper octane

rating, gasolines that contain detergents, corrosion and

stability additives are recommended. Using gasolines that

have these additives will help improve fuel economy,

reduce emissions, and maintain vehicle performance.

Designated TOP TIER Detergent Gaso-

line contains a higher level of detergents

to further aide in minimizing engine

and fuel system deposits. When avail-

able, the usage of Top Tier Detergent

gasoline

recommended.

Visit

www.toptiergas.com for a list of TOP

TIER Detergent Gasoline Retailers.

TECHNICAL SPECIFICATIONS

489

Indiscriminate use of fuel system cleaning agents should be

avoided. Many of these materials intended for gum and

varnish removal may contain active solvents or similar

ingredients. These can harm fuel system gasket and dia-

phragm materials.

Gasoline/Oxygenate Blends

Some fuel suppliers blend unleaded gasoline with oxygen-

ates such as ethanol.

CAUTION!

DO NOT use E-85, gasoline containing methanol, or
gasoline containing more than 15% ethanol (E-15). Use
of these blends may result in starting and drivability
problems, damage critical fuel system components,
cause emissions to exceed the applicable standard,
and/or cause the “Malfunction Indicator Light” to
illuminate. Please observe pump labels as they should
clearly communicate if a fuel contains greater than 15%
ethanol (E-15).

Problems that result from using gasoline containing more

than 15% ethanol (E-15) or gasoline containing methanol are

not the responsibility of the manufacturer and may void or

not be covered under New Vehicle Limited Warranty.

Do Not Use E-85 In Non-Flex Fuel Vehicles

Non-Flex Fuel Vehicles (FFV) are compatible with gasoline

containing up to 15% ethanol (E-15). Use of gasoline with

higher ethanol content may void the New Vehicle Limited

Warranty.
If a Non-FFV vehicle is inadvertently fueled with E-85 fuel,

the engine will have some or all of these symptoms:
• Operate in a lean mode.
• OBD II “Malfunction Indicator Light” on.
• Poor engine performance.
• Poor cold start and cold drivability.
• Increased risk for fuel system component corrosion.

CNG And LP Fuel System Modifications

Modifications that allow the engine to run on compressed

natural gas (CNG) or liquid propane (LP) may result in

damage to the engine, emissions, and fuel system compo-

nents. Problems that result from running CNG or LP are

not the responsibility of the manufacturer and may void or

not be covered under the New Vehicle Limited Warranty.

490

TECHNICAL SPECIFICATIONS

MMT In Gasoline

Methylcyclopentadienyl Manganese Tricarbonyl (MMT) is

a manganese-containing metallic additive that is blended

into some gasoline to increase octane. Gasoline blended

with MMT provides no performance advantage beyond

gasoline of the same octane number without MMT. Gaso-

line blended with MMT reduces spark plug life and

reduces emissions system performance in some vehicles.

The manufacturer recommends that gasoline without

MMT be used in your vehicle. The MMT content of

gasoline may not be indicated on the gasoline pump;

therefore, you should ask your gasoline retailer whether

the gasoline contains MMT. MMT is prohibited in Federal

and California reformulated gasoline.

Fuel System Cautions

CAUTION!

Follow these guidelines to maintain your vehicle’s
performance:
• The use of leaded gasoline is prohibited by Federal

law. Using leaded gasoline can impair engine perfor-
mance and damage the emissions control system.

(Continued)

CAUTION! (Continued)

• An out-of-tune engine or certain fuel or ignition

malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact an authorized dealer for service assistance.

• The use of fuel additives, which are now being sold

as octane enhancers, is not recommended. Most of
these products contain high concentrations of metha-
nol. Fuel system damage or vehicle performance
problems resulting from the use of such fuels or
additives is not the responsibility of the manufac-
turer and may void or not be covered under the New
Vehicle Limited Warranty.

NOTE:

Intentional tampering with the emissions control

system can result in civil penalties being assessed against

you.

TECHNICAL SPECIFICATIONS

491

Carbon Monoxide Warnings

WARNING!

Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon mon-
oxide poisoning:
• Do not inhale exhaust gases. They contain carbon

monoxide, a colorless and odorless gas, which can
kill. Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the

(Continued)

WARNING! (Continued)

engine running for an extended period. If the vehicle
is stopped in an open area with the engine running
for more than a short period, adjust the ventilation
system to force fresh, outside air into the vehicle.

• Guard against carbon monoxide with proper main-

tenance. Have the exhaust system inspected every
time the vehicle is raised. Have any abnormal condi-
tions repaired promptly. Until repaired, drive with
all side windows fully open.

FLUID CAPACITIES

U.S.

Metric

Fuel (Approximate)
Two Door Models

18.5 Gallons

70 Liters

Four Door Models

21.5 Gallons

81 Liters

Engine Oil with Filter
2.0L Engine

5 Quarts

4.73 Liters

3.6L Engine

5 Quarts

4.73 Liters

492

TECHNICAL SPECIFICATIONS

U.S.

Metric

Cooling System *
2.0L Engine (Mopar Antifreeze/Engine Coolant 10 Year/

150,000 Mile Formula or equivalent)

9.9 Quarts

9.4 Liters

2.0L Engine Intercooler without Motor Generator Unit

(MGU) (Mopar Antifreeze/Engine Coolant 10 Year/150,000

Mile Formula or equivalent)

3.2 Quarts

3.0 Liters

2.0L Engine Intercooler with Motor Generator Unit (MGU)

(Mopar Antifreeze/Engine Coolant 10 Year/150,000 Mile

Formula or equivalent)

3.5 Quarts

3.3 Liters

2.0L Battery Coolant (Mopar Antifreeze/Engine Coolant 10

Year/150,000 Mile Formula or equivalent)

2.5 Quarts

2.4 Liters

3.6L Engine (Mopar Antifreeze/Engine Coolant 10 Year/

150,000 Mile Formula or equivalent)

10.7 Quarts

10.1 Liters

3.6L Motor Generator Unit (MGU) (Mopar Antifreeze/

Engine Coolant 10 Year/150,000 Mile Formula or equiva-

lent)

1.9 Quarts

1.8 Liters

3.6L Battery Coolant (Mopar Antifreeze/Engine Coolant 10

Year/150,000 Mile Formula or equivalent)

2.5 Quarts

2.4 Liters

* Includes coolant recovery bottle filled to MAX level.

TECHNICAL SPECIFICATIONS

493

FLUIDS AND LUBRICANTS

Engine

Component

Fluid, Lubricant, or Genuine Part

Engine Coolant

We recommend you use Mopar Antifreeze/Coolant 10 Year/

150,000 Mile Formula OAT (Organic Additive Technology) or

equivalent meeting the requirements of FCA Material Standard

MS.90032.

Intercooler/Motor Generator Unit (if equipped)

We recommend you use Mopar Antifreeze/Coolant 10 Year/

150,000 Mile Formula OAT (Organic Additive Technology) or

equivalent meeting the requirements of FCA Material Standard

MS.90032.

Battery Coolant (if equipped)

We recommend you use Mopar Antifreeze/Coolant 10 Year/

150,000 Mile Formula OAT (Organic Additive Technology) or

equivalent meeting the requirements of FCA Material Standard

MS.90032.

Engine Oil — 2.0L Engine

We recommend you use API Certified SAE 5W-30 Fully Syn-

thetic Engine Oil, meeting the requirements of FCA Material

Standard MS-13340 such as Mopar, Pennzoil, and Shell Helix.

Refer to your engine oil filler cap for correct SAE grade.

Engine Oil — 3.6L Engine

We recommend you use API Certified SAE 0W-20 Engine Oil,

meeting the requirements of FCA Material Standard MS-6395

such as Mopar, Pennzoil, and Shell Helix. Refer to your engine

oil filler cap for correct SAE grade.

494

TECHNICAL SPECIFICATIONS

Component

Fluid, Lubricant, or Genuine Part

Engine Oil Filter

We recommend you use Mopar Engine Oil Filter or equivalent.

Spark Plugs

We recommend you use Mopar Spark Plugs.

Fuel Selection — 2.0L Engine

87 Octane Minimum – 91 Octane Recommended, 0-15% Etha-

nol.

Fuel Selection — 3.6L Engine

87 Octane, 0-15% Ethanol.

CAUTION!

• Mixing of engine coolant (antifreeze) other than

specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine dam-
age and may decrease corrosion protection. Organic
Additive Technology (OAT) engine coolant is differ-
ent and should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant (anti-
freeze) or any “globally compatible” coolant (anti-
freeze). If a non-OAT engine coolant (antifreeze) is
introduced into the cooling system in an emergency,
the cooling system will need to be drained, flushed,
and refilled with fresh OAT coolant (conforming to
MS.90032), by an authorized dealer as soon as pos-
sible.

(Continued)

CAUTION! (Continued)

• Do not use water alone or alcohol-based engine

coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant and
may plug the radiator.

• This vehicle has not been designed for use with

propylene glycol-based engine coolant (antifreeze).
Use of propylene glycol-based engine coolant (anti-
freeze) is not recommended.

TECHNICAL SPECIFICATIONS

495

Chassis

Component

Fluid, Lubricant, or Genuine Part

Automatic Transmission – If Equipped

Use only Mopar ZF 8&9 Speed ATF Automatic Transmis-

sion Fluid or equivalent. Failure to use the correct fluid

may affect the function or performance of your transmis-

sion.

Manual Transmission – If Equipped

We recommend you use Mopar ATF+4 Automatic Trans-

mission Fluid.

Transfer Case

We recommend you use Mopar ATF+4 Automatic Trans-

mission Fluid.

Axle Differential (Front)

We recommend you use Mopar Gear & Axle Lubricant

(SAE 75W85)(API GL-5)

Axle Differential (Rear)

We recommend you use Mopar Gear & Axle Lubricant

(SAE 75W85)(API GL-5). Models equipped with Trac-Lok

Limited Slip Differential require a friction modifier addi-

tive.

Brake Master Cylinder

We recommend you use Mopar DOT 3 Brake Fluid, SAE

J1703. If DOT 3, SAE J1703 brake fluid is not available, then

DOT 4 is acceptable.

Power Steering Reservoir

We recommend you use Mopar Power Steering Fluid +4,

Mopar ATF+4 Automatic Transmission Fluid.

496

TECHNICAL SPECIFICATIONS

UCONNECT SYSTEMS

For detailed information about your Uconnect system,

refer to your Uconnect Owner’s Manual Supplement.

NOTE:

Uconnect screen images are for illustration pur-

poses only and may not reflect exact software for your

vehicle.

DRAG & DROP MENU BAR

The Uconnect features and services in the main menu bar

are easily changed for your convenience. Simply follow

these steps:

1. Press the “Apps

” button to open the App screen.

2. Press and hold, then drag the selected App to replace an

existing shortcut in the main menu bar.

The new shortcut will now be an active App/shortcut on

the main menu bar.

Uconnect 4 Apps Menu

Uconnect 4C/4C NAV Apps Menu

MULTIMEDIA

499

CYBERSECURITY

Your vehicle may be a connected vehicle and may be

equipped with both wired and wireless networks. These

networks allow your vehicle to send and receive informa-

tion. This information allows systems and features in your

vehicle to function properly.
Your vehicle may be equipped with certain security fea-

tures to reduce the risk of unauthorized and unlawful

access to vehicle systems and wireless communications.

Vehicle software technology continues to evolve over time

and FCA US LLC, working with its suppliers, evaluates

and takes appropriate steps as needed. Similar to a com-

puter or other devices, your vehicle may require software

updates to improve the usability and performance of your

systems or to reduce the potential risk of unauthorized and

unlawful access to your vehicle systems.
The risk of unauthorized and unlawful access to your

vehicle systems may still exist, even if the most recent

version of vehicle software (such as Uconnect software) is

installed.

WARNING!

• It is not possible to know or to predict all of the

possible outcomes if your vehicle’s systems are
breached. It may be possible that vehicle systems,
including safety related systems, could be impaired
or a loss of vehicle control could occur that may
result in an accident involving serious injury or
death.

• ONLY insert media (e.g., USB, SD card, or CD) into

your vehicle if it came from a trusted source. Media
of unknown origin could possibly contain malicious
software, and if installed in your vehicle, it may
increase the possibility for vehicle systems to be
breached.

• As always, if you experience unusual vehicle behav-

ior, take your vehicle to your nearest authorized
dealer immediately.

500

MULTIMEDIA

NOTE:
• FCA US LLC or your dealer may contact you directly

regarding software updates.

• To help further improve vehicle security and minimize

the potential risk of a security breach, vehicle owners

should:

• Routinely check www.driveuconnect.com/support/

software-update.html (U.S. Residents) or www.driveu-

connect.ca (Canadian Residents) to learn about avail-

able Uconnect software updates.

• Only connect and use trusted media devices (e.g.

personal mobile phones, USBs, CDs).

Privacy of any wireless and wired communications cannot

be assured. Third parties may unlawfully intercept infor-

mation and private communications without your consent.

For further information, refer to ”Data Collection & Pri-

vacy” in your Uconnect Owners Manual Supplement or

Onboard Diagnostic System (OBD II) Cybersecurity” in

“Getting To Know Your Instrument Panel”.

UCONNECT SETTINGS

The Uconnect system uses a combination of buttons on the

touchscreen and buttons on the faceplate located on the

center of the instrument panel that allow you to access and

change the customer programmable features. Many fea-

tures can vary by vehicle.
Buttons on the touchscreen are accessible on the Uconnect

touchscreen.
Buttons on the faceplate are located below, and beside the

Uconnect system in the center of the instrument panel. In

addition, there is a Scroll/Enter control knob located on the

right side. Turn the control knob to scroll through menus

and change settings (i.e., 30, 60, 90), push the center of the

control knob one or more times to select or change a setting

(i.e., ON, OFF).
Your Uconnect system may also have Screen Off and Mute

buttons on the faceplate.
Push the Display Off button on the faceplate to turn off the

Uconnect screen. Push the Display Off button on the

faceplate a second time to turn the screen on.
Push the Back Arrow button on the faceplate to exit out of

a Menu or certain option on the Uconnect system.

MULTIMEDIA

501

Jeep Wrangler (2018 year). Manual - part 31