2017 JEEP PATRIOT fuel cap

ONBOARD DIAGNOSTIC SYSTEM — OBD II . . .125
▫ Onboard Diagnostic System (OBD II)
Cybersecurity ........................ .126
▫ Loose Fuel Filler Cap Message .............127
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS .......................... .127
94 GETTING TO KNOW YOUR INSTRUMENT PANEL

4. Instrument Cluster Display — If Equipped / OdometerDisplay / Trip Odometer Display
Instrument Cluster Display — If Equipped
The instrument cluster display features a driver-interactive
display that is located in the instrument cluster. Refer to
“Instrument Cluster Display” in this section for further
information.
Message Display Area
When the appropriate conditions exist, the following
odometer messages will display:
door ............................. Door Open
gATE ........................... Liftgate Open
LoW tirE .....................LowTirePr essure
gASCAP ........................ Fuel Cap Fault
noFUSE ........................... Fuse Fault
CHAngE OIL ................Oil Change Required
LoCOOL .........................Low CoolantNOTE:
Some of the above warnings will be displayed in
the instrument cluster display area located in the instru-
ment cluster.
Refer to ”Instrument Cluster Display” in this section for
further information.
LoW tirE
When the appropriate condition exists, the odometer dis-
play will toggle between LoW and tirE for three cycles.
gASCAP
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged, a
“gASCAP” message will display in the odometer display
area. Tighten the fuel filler cap properly and push the STEP
button on the steering wheel to turn off the message. If the
problem continues, the message will appear the next time
the vehicle is started.
noFUSE
If the vehicle diagnostic system determines that the Igni-
tion Off Draw (IOD) fuse is improperly installed, or
damaged, a “noFUSE” message will display in the odom-
eter display area. Refer to “Fuses” in “In Case Of Emer-
gency” for further information on fuses and fuse locations.
4
GETTING TO KNOW YOUR INSTRUMENT PANEL 97

Yellow Telltale Lights
Engine Malfunction Warning Light
Yellow TelltaleLight What It Means
Engine Check/Malfunction Indicator Light (MIL)
The Engine Check/Malfunction Indicator Light (MIL) is a part of an Onboard Diagnostic System
called OBD II that monitors engine and automatic transmission control systems. The light will
illuminate when the ignition is in the ON position before engine start. If the bulb does not come
on when turning the key from OFF to ON/RUN, have the condition checked promptly.
Certain conditions, such as a loose or missing gas cap, poor quality fuel, etc., may illuminate the
light after engine start. The vehicle should be serviced if the light stays on through several typical
driving styles. In most situations, the vehicle will drive normally and will not require towing.
When the engine is running, the MIL may flash to alert serious conditions that could lead to im-
mediate loss of power or severe catalytic converter damage. The vehicle should be serviced as
soon as possible if this occurs.
WARNING!
A malfunctioning catalytic converter, as referenced
above, can reach higher temperatures than in normal
operating conditions. This can cause a fire if you drive
slowly or park over flammable substances such as dry
plants, wood, cardboard, etc. This could result in death
or serious injury to the driver, occupants or others.
CAUTION!
Prolonged driving with the Malfunction Indicator
Light (MIL) on could cause damage to the engine
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.
104 GETTING TO KNOW YOUR INSTRUMENT PANEL

Loose Fuel Filler Cap Indicator Light — If Equipped
Yellow TelltaleLight What It Means
Loose Fuel Filler Cap Indicator Light — If Equipped
This light will illuminate when fuel filler cap is loose. Properly close the filler cap to disengage
the light. If the light does not turn off, please see your authorized dealer.
Low Washer Fluid Indicator Light — If Equipped
Yellow Telltale
Light What It Means
Low Washer Fluid Indicator Light — If Equipped
This indicator will illuminate when the windshield washer fluid is low.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 111

Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose or improp-
erly installed. A “gASCAP” message will be displayed in
the instrument cluster. Tighten the gas cap until a “click-
ing” sound is heard. This is an indication that the gas cap
is properly tightened. Push the trip odometer RESET
button to turn off the message. If the problem persists, the
message will appear the next time the vehicle is started.
This might indicate a damaged cap. If the problem is
detected twice in a row, the system will turn on the MIL.
Resolving the problem will turn the MIL light off.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass an
inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.For states that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction
Indicator Light (MIL)” is functioning and is not on
when the engine is running, and that the OBD II system is
ready for testing. Normally, the OBD II system will be ready. The OBD II
system may
notbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. If the OBD II system should be determined not ready
for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition actuated test, which you
can use prior to going to the test station. To check if your
vehicle’s OBD II system is ready, you must do the following:
1. Cycle the ignition switch to the ON position, but do not crank or start the engine.
NOTE: If you crank or start the engine, you will have to
start this test over.
2. As soon as you cycle the ignition switch to the ON position, you will see the “Malfunction Indicator Light
(MIL)” symbol come on as part of a normal bulb check.
3. Approximately 15 seconds later, one of two things will happen:
• The MIL will flash for about 10 seconds and then return
to being fully illuminated until you turn OFF the igni-
tion or start the engine. This means that your vehicle’s
OBD II system is not readyand you should notproceed
to the I/M station.
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GETTING TO KNOW YOUR INSTRUMENT PANEL 127

approximately 23 psi (158 kPa). This tire pressure is suffi-
ciently low enough to turn ON the Tire Pressure Monitor-
ing Telltale Light. Driving the vehicle may cause the tire
pressure to rise to approximately 27 psi (186 kPa), but the
Tire Pressure Monitoring Telltale Light will still be ON. In
this situation, the Tire Pressure Monitoring Telltale Light
will turn OFF only after the tires are inflated to the
vehicle’s recommended cold placard pressure value.
NOTE:When filling warm tires, the tire pressure may need
to be increased up to an additional 4 psi (30 kPa) above the
recommended cold placard pressure in order to turn the
Tire Pressure Monitoring Telltale Light off.
CAUTION!
• The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system op-
eration or sensor damage may result when using
replacement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage.
(Continued)
CAUTION! (Continued)
•Using aftermarket tire sealants may cause the Tire
Pressure Monitoring System (TPMS) sensor to be-
come inoperable. After using an aftermarket tire
sealant it is recommended that you take your vehicle
to an authorized dealer to have your sensor function
checked.
• After inspecting or adjusting the tire pressure always
reinstall the valve stem cap. This will prevent mois-
ture and dirt from entering the valve stem, which
could damage the TPMS sensor.
NOTE:
• The TPMS is not intended to replace normal tire care and
maintenance or 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.
5
SAFETY 141

▫To Deactivate ........................ .215
▫ To Resume Speed ..................... .215
▫ To Vary The Speed Setting ................215
▫ To Accelerate For Passing .................217
 PARKVIEW REAR BACK UP CAMERA — IF
EQUIPPED ........................... .217
 ADDING FUEL ........................ .219
▫ Fuel Filler Cap (Gas Cap) .................219
▫ Loose Fuel Filler Cap Message .............220
 VEHICLE LOADING .....................220
▫ Certification Label ..................... .220
 TRAILER TOWING ..................... .222
▫ Common Towing Definitions ...............222 ▫
Trailer Hitch Classification ................224
▫ Trailer Towing Weights (Maximum Trailer Weight
Ratings) ............................ .225
▫ Trailer And Tongue Weight ...............226
▫ Towing Requirements ...................226
▫ Towing Tips ......................... .230
 RECREATIONAL TOWING (BEHIND
MOTORHOME, ETC.) ....................232
▫ Towing This Vehicle Behind Another Vehicle. . . .232
 DRIVING TIPS ......................... .233
▫ On-Road Driving Tips ...................233
▫ Off-Road Driving Tips ...................233
194 STARTING AND OPERATING

ADDING FUEL
Fuel Filler Cap (Gas Cap)
The gas cap is behind the fuel filler door, on the left side of
the vehicle. If the gas cap is lost or damaged, be sure the
replacement cap is for use with this vehicle.
After removing the gas cap, place the gas cap tether cable
over a hook on the inside of the fuel door. This keeps the
gas cap suspended away from and protects the vehicle’s
surface.
CAUTION!
•Damage to the fuel system or emission control sys-
tem could result from using an improper fuel tank
filler cap. A poorly fitting cap could let impurities
into the fuel system.
• A poorly fitting fuel filler cap may cause the “Mal-
function Indicator Light (MIL)” to turn on.
• To avoid fuel spillage and overfilling, do not “top
off” the fuel tank after filling.
WARNING!
• Never have any smoking materials lit in or near the
vehicle when the gas cap is removed or the tank is
being filled.
• Never add fuel when the engine is running. This is
in violation of most state and federal fire regulations
and may cause the MIL to turn on.
• A fire may result if gasoline is pumped into a
portable container that is inside of a vehicle. You
could be burned. Always place gas containers on the
ground while filling.
Fuel Filler Cap
6
STARTING AND OPERATING 219