2021 JEEP PATRIOT fuel

WARNING!(Continued)
•Overinflation reduces a tire’s ability to
cushion shock. Objects on the road and
chuckholes can cause damage that result
in tire failure.
•Overinflated or underinflated tires can af-
fect vehicle handling and can fail suddenly,
resulting in loss of vehicle control.
•Unequal tire pressures can cause steering
problems. You could lose control of your
vehicle.
•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
recommended 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.
Fuel Economy
Underinflated tires will increase tire rolling resis-
tance resulting in higher fuel consumption.
Tread Wear
Improper cold tire inflation pressures can cause
abnormal 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 un-
comfortable ride.
Tire Inflation PressuresThe 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 judgement when determining
proper inflation. Tires may look properly in-
flated even when they are under-inflated.
•Inspect tires for signs of tire wear or visible
damage.
CAUTION!
After inspecting or adjusting the tire pres-
sure, always reinstall the valve stem cap.
This will prevent moisture and dirt from en-
tering the valve stem, which could damage
the valve stem.
Inflation pressures specified on the placard are
always “cold tire inflation pressure”. Cold tire
inflation pressure is defined as the tire pressure
after the vehicle has not been driven for at least
three hours, or driven less than 1 mile (1.6 km)
after sitting for a minimum of three hours. The
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CAUTION!
•The TPMS has been optimized for the
original equipment tires and wheels. TPMS
pressures and warning have been estab-
lished for the tire size equipped on your
vehicle. Undesirable system operation 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.
•Using aftermarket tire sealants may cause
the Tire Pressure Monitoring System
(TPMS) sensor to become inoperable. Af-
ter using an aftermarket tire sealant it is
recommended that you take your vehicle
to an authorized dealership to have your
sensor function checked.
•After inspecting or adjusting the tire pres-
sure always reinstall the valve stem cap.
This will prevent moisture and dirt from
entering the valve stem, which could dam-
age the TPMS sensor.NOTE:
•The TPMS is not intended to replace nor-
mal tire care and maintenance or to pro-
vide 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 maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure using an accurate tire gauge,
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.Base System
This is the TPMS warning indicator
located in the instrument cluster.
The 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 the tires on your
vehicle regularly and to maintain the proper
pressure.
The TPMS consists of the following compo-
nents:
•Receiver Module.
•Four Tire Pressure Monitoring Sensors.
•Tire Pressure Monitoring Telltale Light.
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the “SERVICE TPM SYSTEM” message will no
longer be displayed as long as no system fault
exists.
To reactivate the TPMS, replace all four wheel
and tire assemblies (road tires) with tires
equipped with TPM sensors. Then, drive the
vehicle for up to 10 minutes above 15 mph
(24 km/h). The TPMS will chime, the “TPM
Telltale Light” will flash on and off for 75 sec-
onds and then turn off, and the Electronic
Vehicle Information Center (EVIC) will display
the “SERVICE TPM SYSTEM” message. The
EVIC will also display pressure values in place
of the dashes. On the next ignition switch cycle,
the “SERVICE TPM SYSTEM” message will no
longer be displayed as long as no system fault
exists.
FUEL REQUIREMENTS —
GASOLINE ENGINE
All gasoline engines are designed to meet all
emissions regulations and provide excellent
fuel economy and performance when using
high quality unleaded gasoline with a minimum
research octane rating (RON) of 91.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
experience these symptoms, try another brand
of gasoline before considering service for the
vehicle.
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 may help improve fuel economy, re-
duce emissions, and maintain vehicle perfor-
mance.
Poor quality gasoline can cause problems such
as hard starting, stalling and stumble. If you
experience these problems, try another brand
of gasoline before considering service for the
vehicle.
Methanol(Methyl) is used in a variety of concentrations
when blended with unleaded gasoline. You mayfind fuels containing 3% or more methanol
along with other alcohols called cosolvents.
Problems that result from using methanol/
gasoline blends are not the responsibility of the
manufacturer.
CAUTION!
Do not use gasolines containing Methanol.
Use of these blends may result in starting
and drivability problems and may damage
critical fuel system components.
EthanolThe manufacturer recommends that your ve-
hicle be operated on fuel containing no more
than 15% ethanol. Purchasing your fuel from a
reputable supplier may reduce the risk of ex-
ceeding this 15% limit and/or of receiving fuel
with abnormal properties. It should also be
noted that an increase in fuel consumption
should be expected when using ethanol-
blended fuels, due to the lower energy content
of ethanol. Problems that result from using
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methanol/gasoline or E-85 ethanol blends are
not the responsibility of the manufacturer.
CAUTION!
Use of fuel with Ethanol content higher than
15% may result in engine malfunction, start-
ing and operating difficulties, and materials
degradation. These adverse effects could
result in permanent damage to your vehicle.
Clean Air GasolineMany gasolines are now being blended that
contribute to cleaner air, especially in those
areas where air pollution levels are high. These
new blends provide a cleaner burning fuel and
some are referred to as “reformulated gasoline.”
The manufacturer supports these efforts toward
cleaner air. You can help by using these blends
as they become available.
MMT In GasolineMMT is a manganese containing metallic addi-
tive that is blended into some gasoline to in-
crease octane. Gasoline blended with MMTprovides no performance advantage beyond
gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces
spark plug life and reduces emission system
performance in some vehicles. The manufac-
turer 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 or not his/her gasoline contains
MMT.
Materials Added To FuelBesides 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, re-
duce emissions, and maintain vehicle perfor-
mance.
Indiscriminate use of fuel system cleaning
agents should be avoided. Many of these ma-
terials intended for gum and varnish removal
may contain active solvents or similar ingredi-ents. These can harm fuel system gasket and
diaphragm materials.
WARNING!
Carbon monoxide (CO) in exhaust gases is
deadly. Follow the precautions below to pre-
vent carbon monoxide poisoning:
•Do not inhale exhaust gases. They contain
carbon monoxide, a colorless and odor-
less 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
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.
(Continued)
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WARNING!(Continued)
•Guard against carbon monoxide with
proper maintenance. Have the exhaust
system inspected every time the vehicle is
raised. Have any abnormal conditions re-
paired promptly. Until repaired, drive with
all side windows fully open.
•Keep the liftgate closed when driving your
vehicle to prevent carbon monoxide and
other poisonous exhaust gases from en-
tering the vehicle.
ADDING FUEL
Locking Fuel Filler Cap (Gas Cap)The locking gas cap is inside 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.
1. Turn off the engine.2. Insert the ignition key into the fuel cap and
turn the key one-quarter turn to the right,
then rotate the fuel cap to the left to remove.
3. 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 sus-
pended away from and protects the vehicle’s
surface.
4. Rotate the ignition key back to the left to
remove the key from the cap.
5. To replace the cap, insert it into the filler neck
and tighten to the right until at least one click
is heard.NOTE:
•When the fuel nozzle “clicks” or shuts off,
the fuel tank is full.
•Tighten the gas cap about 1/4 turn until
you hear one click. This is an indication
that cap is properly tightened.
•If the gas cap is not tightened properly,
the MIL will come on. Be sure the gas cap
is tightened every time the vehicle is
refueled.
Loose Fuel Filler Cap MessageIf the vehicle diagnostic system determines that
the fuel filler cap is loose or improperly installed,
a “gASCAP” message will be displayed in the
Odometer/Trip Odometer in the instrument clus-
ter. Refer to “Warning And Indicator Lights” in
“Understanding Your Instrument Panel” for fur-
ther information. Tighten the fuel filler cap prop-
erly and push the odometer/trip odometer RE-
SET button to turn the message off. If the
problem continues, the message will appear the
next time the vehicle is started. Refer to “On-
board Diagnostic System” in “Maintaining Your
Vehicle” for further information.
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Towing TipsBefore setting out on a trip, practice turning,
stopping and backing the trailer in an area away
from heavy traffic.
Manual Transmission — If Equipped
If using a manual transmission vehicle for trailer
towing, all starts must be in first gear to avoid
excessive clutch slippage.
Automatic Transmission — If Equipped
The DRIVE range can be selected when towing.
However, if frequent shifting or changes in
engine speed occur while in DRIVE, use the
AutoStick shift control to manually select a
lower gear ratio.
NOTE:
Using a lower gear ratio while operating the
vehicle under heavy loading conditions, will
improve performance and extend transmis-
sion life by reducing excessive shifting and
heat buildup. This action will also provide
better engine braking.
If you REGULARLY tow a trailer for more than
45 minutes of continuous operation, then
change the transmission fluid and filter asspecified for"police, taxi, fleet, or frequent
trailer towing."Refer to the “Maintenance
Schedule” for the proper maintenance intervals.
AutoStick
•When using the AutoStick shift control, select
the highest gear that allows for adequate
performance and avoids frequent downshifts.
For example, choose"4"if the desired speed
can be maintained. Choose"3"or"2"if
needed to maintain the desired speed.
•To prevent excess heat generation, avoid
continuous driving at high RPM. Reduce
vehicle speed as necessary to avoid ex-
tended driving at high RPM. Return to a
higher gear or vehicle speed when grade and
road conditions allow.
Electronic Speed Control — If Equipped
•Do not use in hilly terrain or with heavy loads.
•When using the speed control, if you experi-
ence speed drops greater than 10 mph
(16 km/h), disengage until you can get back
to cruising speed.•Use speed control in flat terrain and with light
loads to maximize fuel efficiency.
Cooling System
To reduce potential for engine and transmission
overheating, take the following actions:
City Driving
When stopped for short periods of time, shift the
transmission into NEUTRAL and increase en-
gine idle speed.
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
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WARNING!(Continued)
•Batteries contain sulfuric acid that can
burn your skin or eyes and generate hy-
drogen gas which is flammable and explo-
sive. Keep open flames or sparks away
from the battery.
1. Set the parking brake, shift the automatic
transmission into PARK (manual transmis-
sion to NEUTRAL) and turn the ignition to
LOCK.
2. Turn off the heater, radio, and all unneces-
sary electrical accessories.
3. If using another vehicle to jump-start the
battery, park the vehicle within the jumper
cables reach, set the parking brake and
make sure the ignition is OFF.
WARNING!
Do not allow vehicles to touch each other as
this could establish a ground connection and
personal injury could result.
Jump-Starting Procedure
WARNING!
Failure to follow this jump-starting procedure
could result in personal injury or property
damage due to battery explosion.
CAUTION!
Failure to follow these procedures could re-
sult in damage to the charging system of the
booster vehicle or the discharged vehicle.
NOTE:
Remove Air Intake before proceeding with
this Jump-Starting procedure.Connecting The Jumper Cables
1. Connect the positive(+)end of the jumper
cable to the positive(+)post of the dis-
charged vehicle.
2. Connect the opposite end of the positive(+)
jumper cable to the positive(+)post of the
booster battery.
3. Connect the negative end(-)of the jumper
cable to the negative(-)post of the booster
battery.
4. Connect the opposite end of the negative(-)
jumper cable to a good engine ground (ex-
posed metal part of the discharged vehicle’s
engine) away from the battery and the fuel
injection system.
WARNING!
Do not connect the jumper cable to the
negative(-)post of the discharged battery.
The resulting electrical spark could cause
(Continued)
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7
MAINTAINING YOUR VEHICLE
•ENGINE COMPARTMENT — 2.0L . . . . . . . . . . . . .. . . . . .253
•ENGINE COMPARTMENT — 2.4L . . . . . . . . . . . . .. . . . . .254
•ONBOARD DIAGNOSTIC SYSTEM — OBD II . . ..........255
•Onboard Diagnostic System (OBD II) Cybersecurity.......255
•Loose Fuel Filler Cap Message...................256
•REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . .256
•MAINTENANCE PROCEDURES . . . . . . . . . . . . . . ......256
•Engine Oil................................256
•Engine Oil Filter............................258
•Engine Air Cleaner Filter.......................258
•Maintenance-Free Battery.......................258
•Air Conditioner Maintenance.....................259
•Body Lubrication............................261
•Windshield Wiper Blades.......................261
•Adding Washer Fluid.........................261
•Exhaust System............................262
•Cooling System............................263
•Brake System..............................266
•Automatic Transmission (6-Speed) — If Equipped........267
251