fuel consumption JEEP WRANGLER UNLIMITED 2018 Owner handbook (in English)

Gear Shift Indicator (GSI) — If Equipped
The Gear Shift Indicator (GSI) system is en-
abled on vehicles with a manual transmis-
sion, or when a vehicle with an automatic
transmission is in manual shift mode. The
GSI provides the driver with a visual indica-
tion when the recommended gear shift point
has been reached. This indication notifies
the driver that changing gear will allow a
reduction in fuel consumption. When the up
shift indicator is shown on the instrument
cluster display, the GSI is advising the driver
to engage a higher gear. When the down shift
indicator is shown on the display, the GSI is
advising the driver to engage a lower gear.
The GSI indicator remains illuminated until
the driver changes gear, or the driving condi-
tions return to a situation where changing
gear is not required to improve fuel consump-
tion.
Fuel System Messages
The following chart contains a list of different
messages that may appear in the instrument
cluster, depending on different system or fuel
conditions. Use the descriptions to interpret
what the message means and determine the
best action to take.
GETTING TO KNOW YOUR INSTRUMENT PANEL
64

CAUTION!
age to the vehicle control system. It also
could affect fuel economy and driveability.
If the MIL is flashing, severe catalytic
converter damage and power loss will soon
occur. Immediate service is required.
— AdBlue (UREA) Injection System
Failure Warning Light — If Equipped
This warning light will illuminate along with a
dedicated message on the display (If
Equipped) if an unknown fluid not conform-
ing with acceptable characteristics is in-
serted, or if an average consumption of Ad-
Blue (UREA) over 50% is detected. Contact
an authorized dealer as soon as possible.
If the problem is not solved, a specific mes-
sage will appear on the Instrument Cluster
Display whenever a certain threshold is
reached until it will no longer be possible to
start the engine.When about 125 mi (200 km) are remaining
before the AdBlue (UREA) tank is empty, a
continuous dedicated message will appear on
the instrument panel, accompanied by a
buzzer sound (If Equipped).
SERV4WD— Service 4WD Warning Light — If
Equipped
This warning light will illuminate to signal a
fault with the 4WD system. If the light stays
on or comes on during driving, it means that
the 4WD system is not functioning properly
and that service is required. We recommend
you drive to the nearest service center and
have the vehicle serviced immediately.
— Service Stop/Start System Warning
Light — If Equipped
This warning light will illuminate when the
Stop/Start system is not functioning properly
and service is required. Contact an autho-
rized dealer for service.
— Speed Control Fault Warning Light
This warning light will illuminate to indicate
the Speed Control System is not functioning
properly and service is required. Contact an
authorized dealer.
— Sway Bar Fault Warning Light
This light will illuminate when there is a fault
in the sway bar disconnect system.
— Tire Pressure Monitoring System
(TPMS) Warning Light
The warning light switches on and a message
is displayed to indicate that the tire pressure
is lower than the recommended value and/or
that slow pressure loss is occurring. In these
cases, optimal tire duration and fuel con-
sumption may not be guaranteed.
Should one or more tires be in the condition
mentioned above, the display will show the
indications corresponding to each tire.
CAUTION!
Do not continue driving with one or more
flat tires as handling may be compro-GETTING TO KNOW YOUR INSTRUMENT PANEL
72

Push the SWAY BAR switch to activate the
system. Push the switch again to deactivate
the system. The “Sway Bar Indicator Light”
(located in the instrument cluster) will illumi-
nate when the bar is disconnected. The
“Sway Bar Indicator Light” will flash during
activation transition, or when activation con-
ditions are not met. The stabilizer/sway bar
should remain in on-road mode during nor-
mal driving conditions.
WARNING!
Ensure the stabilizer/sway bar is recon-
nected before driving on hard surfaced
roads or at speeds above 18 mph
(29 km/h); a disconnected stabilizer/sway
bar may contribute to the loss of vehicle
control, which could result in serious in-
jury. Under certain circumstances, the
front stabilizer/sway bar enhances vehicle
stability and assists with vehicle control.
The system monitors vehicle speed and
will attempt to reconnect the stabilizer/
sway bar at speeds over 18 mph
(29 km/h). This is indicated by a flashing
or solid “Sway Bar Indicator Light.” Once
WARNING!
vehicle speed is reduced below 14 mph
(22 km/h), the system will once again
attempt to return to off-road mode.
To disconnect the stabilizer/sway bar, shift to
either 4H or 4L and push the SWAY BAR
switch to obtain the off-road position. Refer
to “Four-Wheel Drive Operation” in this sec-
tion for further information. The “Sway Bar
Indicator Light” will flash until the stabilizer/
sway bar has been fully disconnected.
NOTE:
The stabilizer/sway bar may be torque locked
due to left and right suspension height differ-
ences. This condition is due to driving sur-
face differences or vehicle loading. In order
for the stabilizer/sway bar to disconnect/
reconnect, the right and left halves of the bar
must be aligned. This alignment may require
that the vehicle be driven onto level ground or
rocked from side to side.
To return to on-road mode, push the SWAY
BAR switch again.
WARNING!
If the stabilizer/sway bar will not return to
on-road mode, the “Sway Bar Indicator
Light” will flash in the instrument cluster
and vehicle stability may be reduced. Do
not attempt to drive the vehicle over
18 mph (29 km/h). Driving faster than
18 mph (29 km/h) with a disconnected
stabilizer/sway bar may contribute to the
loss of vehicle control, which could result
in serious injury.
STOP/START SYSTEM —
AUTOMATIC
TRANSMISSION (IF
EQUIPPED)
The Stop/Start function is developed to re-
duce fuel consumption. The system will stop
the engine automatically during a vehicle
stop if the required conditions are met. Re-
leasing the brake pedal or pressing the accel-
erator pedal will automatically re-start the
engine.
157

TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION
NUMBER.................246
WHEEL AND TIRE TORQUE
SPECIFICATIONS...........246
Torque Specifications............246
DIMENSIONS...............247
WHEELS..................250
WEIGHTS.................250FUEL REQUIREMENTS — GASOLINE
ENGINE...................252
2.0L Engine.................252
3.6L Engine.................252
Materials Added To Fuel.........253
Fuel Icon Identification Compliant To
EN16942...................253
FUEL REQUIREMENTS — DIESEL
ENGINE..................255
Fuel Icon Identification Compliant To
EN16942...................256
FLUID CAPACITIES..........257
FLUIDS AND LUBRICANTS.....259
Engine....................259
Chassis....................261
FUEL CONSUMPTION AND CO2EMISSIONS................262
MOPAR ACCESSORIES.......262
Authentic Accessories And Jeep
Performance Parts By Mopar.......262
TECHNICAL SPECIFICATIONS
245

FLUIDS AND LUBRICANTS
Engine
Your vehicle is equipped with an engine oil
that has been thoroughly developed and
tested in order to meet the requirements ofthe Scheduled Servicing Plan. Constant use
of the prescribed lubricants guarantees the
fuel consumption and emission specifica-
tions. Lubricant quality is crucial for engine
operation and duration. If lubricants con-
forming to the specific request are not avail-
able, products that meet the indicated speci-fications can be used to top up, in this case
optimal performance of the engine is not
guaranteed.
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend you use PARAFLUUPFormula OAT (Organic Additive Technology) or
equivalent meeting the requirements of FCA Material Standard MS.90032.
Intercooler – If Equipped We recommend you use PARAFLU
UPFormula OAT (Organic Additive Technology) or
equivalent meeting the requirements of FCA Material Standard MS.90032.
Engine Oil — 2.0L Gasoline Engine We recommend you use API SN PLUS Certified SAE 5W-30 Full Synthetic Engine Oil which
meets the requirements of FCA Material Standard MS-13340. If SN PLUS or equivalent oil
is unavailable then use SAE 0W-30 ACEA C2/API SN Full Synthetic Engine Oil which meets
the requirement of FCA Material Standard 9.55535-GS1, such as SELENIA DIGITEK.
CAUTION!
Failure to use the recommended SN PLUS or equivalent oil can cause engine damage not cov-
ered by the vehicle warranty.
Engine Oil — 3.6L Gasoline Engine We recommend you use, API Certified SAE 0W-20 Engine Oil, meeting the requirements
of FCA Material Standard MS-6395. Refer to your engine oil filler cap for correct SAE
grade.
259

Component Fluid, Lubricant, or Genuine Part
Brake Master Cylinder We recommend you use DOT 3, SAE J1703 brake fluid. If DOT 3 brake fluid is not available
then TUTELA TOP4/S, FMVSS no. 116 DOT 4, ISO 4925 SAE J1704, or equivalent, is
acceptable.
If using DOT 4 brake fluid, the fluid must be changed every 24 months regardless of mileage.
Power Steering Reservoir We recommend you use TUTELA TRANSMISSION FORCE 4 fluid, or equivalent, meeting
requirement of FCA Material Standard 9.55550-AV4 or MS.9602.
FUEL CONSUMPTION AND
CO
2EMISSIONS
The fuel consumption and CO2emission
figures declared by the manufacturer are de-
termined on the basis of the type-approval
tests laid down by the applicable standards
in the country where the vehicle is registered.
The type of route, traffic conditions, weather
conditions, driving style, general condition of
the vehicle, trim level/equipment/ accesso-
ries, use of the climate control system, ve-
hicle load, presence of roof racks and othersituations that adversely affect the aerody-
namics or wind resistance lead to different
fuel consumption values than those mea-
sured.
The fuel consumption will only become more
regular after driving the first 1,864 miles
(3000 km).
To find the specific fuel consumption and
CO
2emission figures for this vehicle, please
refer to the data in the Certificate of Confor-
mity, and the related documentation that
accompanies the vehicle.
MOPAR ACCESSORIES
Authentic Accessories And Jeep
Performance Parts By Mopar
• Mopar Accessories and Jeep performance
parts are developed with the same engi-
neering that went into your Wrangler.
Choose these products with confidence
knowing that they have passed the same
rigid standards for function, fit, durability
and performance as your Wrangler.
• For the full line of Authentic Jeep Accesso-
ries by Mopar, visit your local dealership or
online at jeep.mopar.eu
NOTE:
All parts are subject to availability.TECHNICAL SPECIFICATIONS
262

Jump Starting..............196
Oil..................257, 259
Oil Filler Cap...............217
Oil Selection...............257
Overheating...............199
Starting..................142
Enhanced Accident Response
Feature...............119, 205
Exhaust Gas Cautions...........137
Exhaust System...............137
Exterior Lights.............35, 139
Fabric Care..................240
Fabric Top..................240
Filters
Air Conditioning..............45
Engine Oil................259
Flashers
Hazard Warning.............176
Turn Signal............178, 179
Turn Signals.............76, 139
Flash-To-Pass.................36
Fluid, Brake.................261
Fluid Capacities...............257
Fluid Leaks..................139
Fluid Level Checks
Brake...................224Engine Oil................220
Fluids And Lubricants...........259
Fog Lights.............36, 74, 179
Fog Light Service..............179
Fold And Tumble Rear Seat.........29
Fold-Flat Seats................26
Folding Rear Seats..............28
Four-Way Hazard Flasher..........176
Four Wheel Drive..............150
Operation.................150
Shifting..................150
Systems..................150
Four Wheel Drive Operation
. . . .150, 153
Freedom Panels................51
Freeing A Stuck Vehicle..........201
Fuel......................252
Adding..................166
Additives.................253
Consumption...............262
Filler Cap (Gas Cap).......166, 167
Gasoline.................252
Materials Added.............253
Octane Rating...........252, 259
Requirements..............257
Specifications..............259
Tank Capacity..............257
Fueling....................166Fuses.....................180
Gas Cap (Fuel Filler Cap)......166, 167
Gasoline (Fuel)................252
Gasoline Particulate Filter (GPF)......60
General Information.............288
Glass Cleaning................243
Hard Top....................51
Hazard Warning Flasher..........176
Headlights
Automatic.................36
Bulb Replacement...........178
Cleaning.................239
High Beam/Low Beam Select Switch .35
Leveling...................37
Lights On Reminder...........37
Passing...................36
Replacing.................178
Head Restraints................30
Heated Mirrors.................35
High Beam/Low Beam Select (Dimmer)
Switch....................35
Hill Descent Control.............89
Hill Descent Control Indicator.......89
Hill Start Assist................84
Hood Prop...................56
337