2015 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.” or#METRIC#appears.
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.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 341

▫Tread Wear Indicators..................507
▫Life Of Tire.........................508
▫Replacement Tires.....................509
!TIRE CHAINS (TRACTION DEVICES).......510
!TIRE ROTATION RECOMMENDATIONS.....512
!TIRE PRESSURE MONITOR SYSTEM (TPMS) . . .513
▫Base TPM System.....................517
▫Premium System — If Equipped...........520
▫General Information...................525
!FUEL REQUIREMENTS..................525
▫3.6L Engine..........................525
▫Reformulated Gasoline.................526
▫Gasoline/Oxygenate Blends..............526
▫E-85 Usage In Non-Flex Fuel Vehicles.......527
▫MMT In Gasoline.....................527
▫Materials Added To Fuel................528
▫Fuel System Cautions...................528
▫Carbon Monoxide Warnings.............529
!ADDING FUEL........................530
▫Fuel Filler Cap (Gas Cap)...............530
▫Loose Fuel Filler Cap Message............531
!VEHICLE LOADING....................532
▫Certification Label....................532
!TRAILER TOWING.....................534
▫Common Towing Definitions.............534
▫Trailer Hitch Classification...............537
418 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.
Both under-inflation 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.
Economy
Under-inflated tires will increase tire rolling resistance
resulting in higher fuel consumption.
Tread Wear
Improper cold tire inflation pressures can cause abnor-
mal wear patterns and reduced tread life, resulting in the
need for earlier tire replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfortable ride.
Over-inflation produces a jarring and uncomfortable
ride.
5
STARTING AND OPERATING 499

CAUTION!(Continued)
•After inspecting or adjusting the tire pressure,
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the valve
stem, which could damage the Tire Pressure Moni-
toring Sensor.
NOTE:
•The TPMS is not intended to replace normal tire care
and maintenance, nor to provide warning of a tire
failure or condition.
•The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
•Driving on a significantly under-inflated tire causes
the tire to overheat and can lead to tire failure.
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.
516 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 StatesMRXC4W4MA4
Canada2546A-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 525

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 weight values 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
items down low and be sure that the weight is distributed
equally. Stow all loose items securely before driving.
5
STARTING AND OPERATING 533

About Your Brakes........................468
ABS (Anti-Lock Brake System)................309
Adding Engine Coolant (Antifreeze)............614
Adding Fuel.............................530
Additives, Fuel...........................528
Air bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Air Bag
Advance Front Air Bag....................64
Air bag Operation.......................67
Air Bag Warning Light....................72
Enhanced Accident Response................72
Event Data Recorder (EDR).................75
Front Air Bag . . . . . . . . . . . . . . . . . . . . . . . . . . .63
If A Deployment Occurs...................70
Knee Impact Bolsters.....................68
Maintaining Your Air Bag System............74
Air bag Deployment........................63
Air bag Light.............................72
Air bag Maintenance........................74
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . .591
Air Conditioner Maintenance.................598
Air Conditioning..........................400
Air Conditioning Controls...................400
Air Conditioning Filter.....................413
Air Conditioning, Operating Tips..............412
Air Conditioning Refrigerant.................598
Air Conditioning System....................400
Air Pressure, Tires.........................500
Alarm Light.............................312
Alarm (Security Alarm)......................20
Alterations/Modifications, Vehicle...............9
Antenna, Satellite Radio.....................359
Antifreeze (Engine Coolant)..................613
Disposal..............................616
Anti-Lock Warning Light....................309
Appearance Care.........................625
Arming System (Security Alarm)...............20
Assistance Towing.........................129
672 INDEX

Capacities, Fluid..........................646
Caps, Filler
Fuel.................................530
Power Steering.........................465
Radiator (Coolant Pressure)................615
Carbon Monoxide Warning..................100
Cargo Light.............................173
Car Washes.............................626
Cellular Phone...........................115
Center High Mounted Stop Light..............645
Certification Label.........................532
Chains, Tire.............................510
Changing A Flat Tire.......................563
Chart, Tire Sizing.........................488
Check Engine Light (Malfunction Indicator Light) . .310
Checking Your Vehicle For Safety...............99
Checks, Safety............................99
Child Restraint............................76
Child Restraints
Booster Seats...........................81
Child Restraints.........................76
Child Seat Installation.....................95
How To Stow An Unused ALR Seat Belt........91
Infants And Child Restraints................79
Install A LATCH-compatible Child Restraint.....90
Installing Child Restraints Using The Vehicle Seat
Belt..................................92
Locating The LATCH Anchorages............87
Lower Anchors And Tethers For Children.......83
Older Children And Child Restraints..........79
Seating Positions........................82
Child Safety Locks.........................42
Clean Air Gasoline........................526
Cleaning
Wheels...............................627
Climate Control..........................400
Clock..................................344
Cold Weather Operation....................421
674 INDEX