2014 JEEP WRANGLER fuel pressure

Display Units In
The EVIC can be changed between English and Metric
units of measure. The units apply to the Outside Tem-
perature, Average Fuel Economy, and Distance to Empty.
To make your selection, press and release the SELECT
button until “U.S.” orMETRICappears.
Nav–Turn By Turn — If Equipped
When on enables display of Navigation System street
name, turn direction, and distance to turn information in
the EVIC. To make your selection, press and release the
SELECT button until “On” or “Off” appears.
Display Fuel Saver — If Equipped
The “ECO” message is located in the compass/outside
temperature/audio information/ECO display. If Display
Fuel Saver is selected as ON, only the ECO message will
display in the audio information/ECO line of the display.
If Display Fuel Saver is selected as OFF, only the audio information will display in the audio information/ECO
line of the display when the audio system is on. To make
your selection, press and release the SELECT button until
“ON” or “OFF” appears.
Compass Variance
Refer to “Compass/Temperature Display” in “Electronic
Vehicle Information (EVIC)” in “Understanding Your
Instrument Panel” for more information.
Calibrate Compass
Refer to “Automatic Compass Calibration” in “Electronic
Vehicle Information (EVIC)” in “Understanding Your
Instrument Panel” for more information.
Tire PSI
Press and release the UP or DOWN button until “Tire
PSI:” displays highlighted in the EVIC. Press the SELECT
button to view a graphic of the vehicle with a tire
pressure value at each corner of the graphic.
342 UNDERSTANDING YOUR INSTRUMENT PANEL

▫Tread Wear Indicators ..................503
▫ Life Of Tire ........................ .504
▫ Replacement Tires .....................505
 TIRE CHAINS (TRACTION DEVICES) .......506
 TIRE ROTATION RECOMMENDATIONS .....508
 TIRE PRESSURE MONITOR SYSTEM (TPMS) . .509
▫ Premium and Base TPM System ...........512
▫ Premium System — If Equipped ...........516
▫ General Information ...................521
 FUEL REQUIREMENTS ..................521
▫ 3.6L Engine ......................... .521
▫ Reformulated Gasoline .................522
▫ Gasoline/Oxygenate Blends ..............522▫
E-85 Usage In Non-Flex Fuel Vehicles .......523
▫ MMT In Gasoline .....................523
▫ Materials Added To Fuel ................524
▫ Fuel System Cautions ...................524
▫ Carbon Monoxide Warnings .............525
 ADDING FUEL ....................... .526
▫ Fuel Filler Cap (Gas Cap) ...............526
▫ Loose Fuel Filler Cap Message ............527
 VEHICLE LOADING ....................528
▫ Certification Label ....................528
 TRAILER TOWING .....................530
▫ Common Towing Definitions .............530
▫ Trailer Hitch Classification ...............533
416 STARTING AND OPERATING

WARNING!(Continued)
•Unequal tire pressures from one side of the vehicle
to the other can cause the vehicle to drift to the
right or left.
• Always drive with each tire inflated to the recom-
mended cold tire inflation pressure.
Economy
Improper inflation pressures can cause uneven wear
patterns to develop across the tire tread. These abnormal
wear patterns will reduce tread life resulting in a need for
earlier tire replacement. Under-inflation also increases
tire rolling resistance resulting in higher fuel consump-
tion.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfortable ride.
Over-inflation produces a jarring and uncomfortable
ride. Both underinflation and over-inflation affect the stability of the vehicle and can produce a feeling of
sluggish response or over responsiveness in the steering.
NOTE:
•
Unequal tire pressures from side to side may cause
erratic and unpredictable steering response.
• Unequal tire pressure from side to side may cause the
vehicle to drift left or right.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed on the
driver’s side B-Pillar or rear edge of the driver’s side
door.
At least once a month:
• Check and adjust tire pressure with a good quality
pocket-type pressure gauge. Do not make a visual
496 STARTING AND OPERATING

Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling and
stopping ability.
• The TPMS is not a substitute for proper tire mainte-
nance, and it is the driver ’s responsibility to maintain
correct tire pressure, even if under-inflation has not
reached the level to trigger illumination of the “Tire
Pressure Monitoring Telltale Light.”
• Seasonal temperature changes will affect tire pressure,
and the TPMS will monitor the actual tire pressure in
the tire.
Premium and Base TPM System
The Tire Pressure Monitor System (TPMS) uses wireless
technology with wheel rim-mounted electronic sensors to
monitor tire pressure levels. Sensors, mounted to each
wheel as part of the valve stem, transmit tire pressure
readings to the Receiver Module. NOTE:
It is particularly important for you to check the
tire pressure in all of your tires regularly and to maintain
the proper pressure.
The Tire Pressure Monitor System (TPMS) consists of the
following components:
• Receiver Module
• Four Tire Pressure Monitoring Sensors
• Tire Pressure Monitoring Telltale Light
A tire pressure monitoring sensor is located in the spare
wheel if the vehicle is equipped with a matching full size
spare wheel and tire assembly. The matching full size
spare tire can be used in place of any of the four road
tires. A low spare tire will not cause the “Tire Pressure
Monitoring Telltale Light” to illuminate or the chime to
sound. The “Tire Pressure Monitoring Telltale Light” will
illuminate in the instrument cluster, a “LOW TIRE
512 STARTING AND OPERATING

General Information
This device complies with part 15 of the FCC rules and
RSS 210 of Industry Canada. Operation is subject to the
following conditions:
•This device may not cause harmful interference.
• This device must accept any interference received,
including interference that may cause undesired op-
eration.
The tire pressure sensors are covered under one of the
following licenses:
United States MRXC4W4MA4
Canada 2546A-C4W4MA4
FUEL REQUIREMENTS
3.6L Engine
This engine is designed to meet all emis-
sions regulations and provide excellent
fuel economy and performance when us-
ing high-quality unleaded “regular” gaso-
line having an octane rating of 87. The use
of premium gasoline is not recommended, as it will not
provide any benefit over regular gasoline in these en-
gines.
Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage and immediate service is
required. Poor quality gasoline can cause problems such
as hard starting, stalling, and hesitations. If you experi-
ence these symptoms, try another brand of gasoline
before considering service for the vehicle.
5
STARTING AND OPERATING 521

Tire Size
The tire size on the Vehicle Certification Label represents
the actual tire size on your vehicle. Replacement tires
must be equal to the load capacity of this tire size.
Rim Size
This is the rim size that is appropriate for the tire size
listed.
Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weightvalues are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and
rear of your vehicle at the ground can best be determined
by weighing it when it is loaded and ready for operation.
The entire vehicle should first be weighed on a commer-
cial scale to insure that the GVWR has not been exceeded.
The weight on the front and rear of the vehicle should
then be determined separately to be sure that the load is
properly distributed over the front and rear axle. Weigh-
ing the vehicle may show that the GAWR of either the
front or rear axles has been exceeded but the total load is
within the specified GVWR. If so, weight must be shifted
from front to rear or rear to front as appropriate until the
specified weight limitations are met. Store the heavier
5
STARTING AND OPERATING 529

ABS (Anti-Lock Brake System)................311
Adding Engine Coolant (Antifreeze) ............599
Adding Fuel ............................ .526
Additives, Fuel .......................... .524
Airbag.................................65
Air bag Deployment ........................74
Air bag Light .............................77
Air bag Maintenance ........................76
Air bag, Side .............................73
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . .587
Air Conditioner Maintenance .................589
Air Conditioning ......................... .400
Air Conditioning Controls ...................400
Air Conditioning Filter .....................411
Air Conditioning, Operating Tips ..............412
Air Conditioning Refrigerant .................589
Air Conditioning System ....................400
Air Pressure, Tires ........................ .496
Alarm Light ............................ .313Alarm (Security Alarm)
......................21
Alterations/Modifications, Vehicle ...............9
Antenna, Satellite Radio .....................360
Antifreeze (Engine Coolant) ..................598
Disposal ............................. .601
Anti-Lock Brake System (ABS) ................465
Anti-Lock Warning Light ....................311
Appearance Care ..........................611
Arming System (Security Alarm) ...............22
Assistance Towing ........................ .133
Auto Down Power Windows ..................46
Automatic Dimming Mirror ..................116
Automatic Door Locks ......................43
Automatic Headlights ..................... .171
Automatic Oil Change Indicator ...............332
Automatic Temperature Control (ATC) ..........404
Automatic Transaxle Interlock System .........................18
Automatic Transmission ....................429
656 INDEX

Adding Fluid......................... .608
Fluid and Filter Changes ..................608
Fluid Change ......................... .608
Fluid Level Check ...................... .606
Fluid Type ........................... .605
Special Additives ...................... .606
Autostick .............................. .437
Auxiliary Electrical Outlet (Power Outlet) ........185
Auxiliary Power Outlet .....................185
Axle Lock .............................. .444
Battery ................................ .588
Keyless Transmitter Replacement (RKE) ........29
Belts, Seat ...............................53
Body Mechanism Lubrication .................593
Brake Assist System ...................... .468
Brake Control System, Electronic ..............467
Brake System ........................... .603
Anti-Lock (ABS) ....................... .465Master Cylinder
....................... .604
Parking ............................. .462
Warning Light ........................ .310
Brake/Transmission Interlock .................429
Bulb Replacement ........................ .627
Bulbs, Light ............................ .107
Calibration, Compass ..................... .326
Capacities, Fluid ......................... .632
Caps, Filler Fuel ................................ .526
Power Steering ........................ .461
Radiator (Coolant Pressure) ................601
Carbon Monoxide Warning ..................104
Cargo Light ............................ .175
Car Washes ............................ .612
Cellular Phone ...........................118
Center High Mounted Stop Light ..............631
Certification Label ........................ .528
10
INDEX 657