2021 JEEP PATRIOT fuel

ONBOARD DIAGNOSTIC
SYSTEM — OBD II
Your vehicle is equipped with a sophisticated
onboard diagnostic system called OBD II. This
system monitors the performance of the emis-
sions, engine, and automatic transmission con-
trol systems. When these systems are operat-
ing properly, your vehicle will provide excellent
performance and fuel economy, as well as
engine emissions well within current govern-
ment regulations.
If any of these systems require service, the
OBD II system will turn on the “Malfunction
Indicator Light” (MIL). It will also store diagnos-
tic codes and other information to assist your
service technician in making repairs. Although
your vehicle will usually be drivable and not
need towing, see your authorized dealer for
service as soon as possible.
CAUTION!
•Prolonged driving with the MIL on could
cause further damage to the emission con-
trol system. It could also affect fuel
economy and driveability. The vehicle
must be serviced before any emissions
tests can be performed.
•If the MIL is flashing while the engine is
running, severe catalytic converter dam-
age and power loss will soon occur. Imme-
diate service is required.
Onboard Diagnostic System (OBD II)
Cybersecurity
Your vehicle is required to have an Onboard
Diagnostic system (OBD II) and a connection
port to allow access to information related to the
performance of your emissions controls. Autho-
rized service technicians may need to access
this information to assist with the diagnosis and
service of your vehicle and emissions system.
WARNING!
•ONLY an authorized service technician
should connect equipment to the OBD II
connection port in order to diagnose or
service your vehicle.
•If unauthorized equipment is connected to
the OBD II connection port, such as a
driver-behavior tracking device, it may:
•Be possible that vehicle systems, in-
cluding safety related systems, could be
impaired or a loss of vehicle control
could occur that may result in an acci-
dent involving serious injury or death.
•Access, or allow others to access, infor-
mation stored in your vehicle systems,
including personal information.
For further information, refer to “Cybersecurity”
in the “Understanding Your Instrument Panel”
section.
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Loose Fuel Filler Cap MessageAfter fuel is added, the vehicle diagnostic sys-
tem can determine if the fuel filler cap is possi-
bly loose or improperly installed. A “gASCAP”
message will be displayed in the instrument
cluster. Tighten the gas cap until a “clicking”
sound is heard. This is an indication that the gas
cap is properly tightened. Push the trip odom-
eter 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.
REPLACEMENT PARTS
Use of genuine MOPAR parts for normal/
scheduled maintenance and repairs is highly
recommended to ensure the designed perfor-
mance. Damage or failures caused by the use
of non-MOPAR parts for maintenance and re-
pairs will not be covered by the New Vehicle
Limited Warranty.
MAINTENANCE PROCEDURES
The pages that follow contain therequired
maintenance services determined by the engi-
neers who designed your vehicle.
Besides those maintenance items specified in
the fixed “Maintenance Schedule”, there are
other components which may require servicing
or replacement in the future.
CAUTION!
•Failure to properly maintain your vehicle or
perform repairs and service when neces-
sary could result in more costly repairs,
damage to other components or negatively
impact vehicle performance. Immediately
have potential malfunctions examined by
an authorized dealer or qualified repair
center.
(Continued)
CAUTION!(Continued)
•Your vehicle has been built with improved
fluids that protect the performance and
durability of your vehicle and also allow
extended maintenance intervals. Do not
use chemical flushes in these components
as the chemicals can damage your engine,
transmission, or air conditioning. Such
damage is not covered by the New Vehicle
Limited Warranty. If a flush is needed
because of component malfunction, use
only the specified fluid for the flushing
procedure.
Engine Oil
Checking Oil Level
To assure proper engine lubrication, the engine
oil must be maintained at the correct level.
Check the oil level at regular intervals, such as
every fuel stop.
The best time to check the engine oil level is
about five minutes after a fully warmed engine is
shut off. Do not check oil level before starting
256

the engine after it has sat overnight. Checking
engine oil level when the engine is cold will give
you an incorrect reading.
Checking the oil while the vehicle is on level
ground and only when the engine is hot, will
improve the accuracy of the oil level readings.
Maintain the oil level between the range mark-
ings on the dipstick. The range markings will
consist of a crosshatch zone that says SAFE or
a crosshatch zone that says MIN at the low end
of the range and MAX at the high end of the
range. Adding one quart of oil when the reading
is at the low end of the indicated range will result
in the oil level at the full end of the indicator
range.
CAUTION!
Do not overfill the engine. Overfilling the
engine will cause oil aeration, which can lead
to loss of oil pressure and an increase in oil
temperature. This could damage your en-
gine. Also, be sure the oil fill cap is replaced
and tightened after adding oil.Change Engine Oil – All Engines
Refer to the “Maintenance Schedule” for the
proper maintenance intervals.
Engine Oil Selection
For best performance and maximum protection
under all types of operating conditions, the manu-
facturer only recommends engine oils that are API
certified and meet the requirements of FCA Ma-
terial Standard MS-6395 or ACEA A1/B1.
American Petroleum Institute (API) Engine
Oil Identification Symbol
This symbol means that
the oil has been certified
by the American Petro-
leum Institute (API). The
manufacturer only rec-
ommends API Certified
engine oils.
This symbol certifies 0W-20, 5W-20, 0W-30,
5W-30 and 10W-30 engine oils.
CAUTION!
Do not use chemical flushes in your engine
oil as the chemicals can damage your en-
gine. Such damage is not covered by the
New Vehicle Limited Warranty.
Engine Oil Viscosity (SAE Grade)
MOPAR SAE 5W-20 engine oil is recom-
mended for all operating temperatures. This
engine oil improves low temperature starting
and vehicle fuel economy.
The engine oil filler cap also shows the recom-
mended engine oil viscosity for your engine. For
information on engine oil filler cap location, refer
to “Engine Compartment” in “Maintaining Your
Vehicle” for further information.
NOTE:
MOPAR SAE 5W-30 engine oil approved to
FCA MS-6395 or FCA Material Standard
9.55535-CR1 may be used when SAE 5W-20
engine oil meeting FCA MS-6395 or FCA
Material Standard 9.55535-CR1 is not avail-
able.
257

WARNING!
Commercially available windshield washer
solvents are flammable. They could ignite
and burn you. Care must be exercised when
filling or working around the washer solution.
Exhaust SystemThe best protection against carbon monoxide
entry into the vehicle body is a properly main-
tained engine exhaust system.
If you notice a change in the sound of the
exhaust system; or if the exhaust fumes can be
detected inside the vehicle; or when the under-
side or rear of the vehicle is damaged; have an
authorized technician inspect the complete ex-
haust system and adjacent body areas for bro-
ken, damaged, deteriorated, or mispositioned
parts. Open seams or loose connections could
permit exhaust fumes to seep into the passen-
ger compartment. In addition, have the exhaust
system inspected each time the vehicle is
raised for lubrication or oil change. Replace as
required.
WARNING!
•Exhaust gases can injure or kill. They
contain carbon monoxide (CO), which is
colorless and odorless. Breathing it can
make you unconscious and can eventually
poison you. To avoid breathing CO, refer to
“Safety Tips/Exhaust Gas” in “Things To
Know Before Starting Your Vehicle” for
further information.
•A hot exhaust system can start a fire if you
park over materials that can burn. Such
materials might be grass or leaves coming
into contact with your exhaust system. Do
not park or operate your vehicle in areas
where your exhaust system can contact
anything that can burn.CAUTION!
•The catalytic converter requires the use of
unleaded fuel only. Leaded gasoline will
destroy the effectiveness of the catalyst as
an emissions control device and may seri-
ously reduce engine performance and
cause serious damage to the engine.
•Damage to the catalytic converter can
result if your vehicle is not kept in proper
operating condition. In the event of engine
malfunction, particularly involving engine
misfire or other apparent loss of perfor-
mance, have your vehicle serviced
promptly. Continued operation of your ve-
hicle with a severe malfunction could
cause the converter to overheat, resulting
in possible damage to the converter and
vehicle.
Under normal operating conditions, the catalytic
converter will not require maintenance. How-
ever, it is important to keep the engine properly
tuned to assure proper catalyst operation and
prevent possible catalyst damage.
262

Rear Tail/Stop LampsLight is an LED assembly. See your authorized
dealer for replacement.
Rear Turn Signal And Backup
Lamps
1. Remove the two push-pins from the tail lamp
housing.2. Grasp the tail lamp and pull firmly to disen-
gage the lamp from the aperture panel.
3. Twist and remove socket from lamp.
4. Remove bulb from socket and replace.License Lamps
1. Remove the lens cover while holding the tab.
2. Remove the bulb and replace.3.
Install the lens cover (engage it until it snaps
in).
Center High-Mounted StoplampLight is an LED assembly. See your authorized
dealer for replacement.
FLUID CAPACITIES
U.S. Metric
Fuel (Approximate)13.6 Gallons 51 Liters
Engine Oil with Filter
2.0L and 2.4L Engine (SAE 5W-20, API Certi-
fied)4.5 Quarts 4.26 Liters
Cooling System *
2.0L and 2.4L Engine (MOPAR Antifreeze/
Engine Coolant 10 Year/150,000 Mile Formula
or equivalent)7.2 Quarts 6.8 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
280

FLUIDS, LUBRICANTS, AND GENUINE PARTS
Engine
Component Fluid, Lubricant, or Genuine Part
Engine Coolant – 2.0L and 2.4L Engine We recommend you use MOPAR Antifreeze/Coolant 10 Year/150,000 Mile Formula OAT (Organic
Additive Technology) that meets the requirements of FCA Material Standard MS.90032, or an
equivalent coolant.
Engine Oil We recommend you use SAE 5W-20 engine oil, meeting the requirements of FCA Material Stan-
dard MS-6395 or FCA Material Standard 9.55535–CR1. Refer to your engine oil filler cap for cor-
rect SAE grade.
SAE 5W-30 engine oil approved may be used when SAE 5W-20 engine oil is not available.
Engine Oil Filter We recommend you use MOPAR Engine Oil Filters.
Spark Plugs – 2.0L and 2.4L Engine We recommend you use MOPAR Spark Plugs.
Fuel Selection – 2.0L and 2.4L Engine Minimum 91 Research Octane Number (RON), 0-15% Ethanol.
281

Adding Engine Coolant (Antifreeze). . . .264
Adding Fuel..................212
Adding Washer Fluid.............261
Additives, Fuel................211
Adjust
Down....................89
Forward...................89
Rearward..................89
Up......................89
AirBag.....................38
Advance Front Air Bag..........38
Air Bag Operation.............39
Air Bag Warning Light...........44
Enhanced Accident Response......43
Event Data Recorder (EDR).......45
Front Air Bag................38
If A Deployment Occurs..........43
Knee Impact Bolsters...........40
Maintaining Your Air Bag System.....45
Side Air Bags...............40
Transporting Pets.............57
Air Bag Deployment..............38
Air Bag Light.............44, 59, 123
Air Bag Maintenance.............45
Air Cleaner, Engine (Engine Air Cleaner
Filter)....................258
Air Conditioner Maintenance........259Air Conditioning................150
Air Conditioning Controls..........150
Air Conditioning Filter.........158, 260
Air Conditioning Refrigerant......259, 260
Air Conditioning System.....150, 153, 259
Air Conditioning, Operating Tips. . . .157, 159
Air Pressure, Tires..............196
Alarm (Security Alarm)............125
Alarm System (Security Alarm)......14, 15
Alterations/Modifications, Vehicle.......8
Anti-Lock Brake System (ABS).......187
Anti-Lock Warning Light...........133
Antifreeze (Engine Coolant)......263, 280
Capacities................280
Disposal..................265
Appearance Care...............271
Assist, Hill Start................189
Automatic Dimming Mirror..........65
Automatic Door Locks.............22
Automatic Temperature Control (ATC) . . .153
Automatic Transaxle..............12
Fluid Level Check.........268, 269
Automatic Transmission . .168, 169, 267, 268
Autostick.................176
Fluid And Filter Changes........269
Fluid Type.............267, 268
Gear Ranges............170, 174Special Additives..........268, 269
Autostick.................176, 177
Battery..................127, 258
Charging System Light.........127
Keyless Transmitter Replacement
(RKE)...................18
Belts, Seat...................59
Body Mechanism Lubrication........261
Brake Assist System.............189
Brake Fluid..................282
Brake System..............186, 266
Master Cylinder.............266
Parking..................185
Warning Light..............124
Brake, Parking................185
Brake/Transmission Interlock........169
Brakes.....................186
Bulb Replacement..............279
Bulbs, Light................60, 279
Calibration, Compass............144
Camera, Rear.................104
Capacities, Antifreeze (Engine Coolant) . .280
Capacities, Fluid...............280
Caps, Filler
Fuel....................212
318

Electronic Roll Mitigation........194
Traction Control System........191
Electronic Speed Control (Cruise Control) .102
Electronic Stability Control (ESC)......191
Electronic Throttle Control Warning Light. .128
Electronic Vehicle Information Center
(EVIC)...................139
Emergency, In Case Of
Jacking..................228
Jump Starting..............241
Towing..................247
Engine..................253, 254
Air Cleaner................258
Break-In Recommendations.......57
Checking Oil Level............256
Coolant (Antifreeze)...........263
Cooling..................263
Exhaust Gas Caution...........58
Fuel Requirements............210
Jump Starting..............241
Oil ..................256, 280
Oil Change Interval...........257
Oil Filler Cap.........253, 254, 257
Oil Filter.................258
Oil Selection...............257
Oil Synthetic...............258
Overheating...............227Enhanced Accident Response Feature . . .43
Event Data Recorder.............45
Exhaust Gas Caution.............58
Exhaust System.............58, 262
Exterior Lights.................60
Filters
Air Cleaner................258
Air Conditioning..........158, 260
Engine Oil................258
Engine Oil Disposal...........258
Flash-To-Pass.................98
Flashers
Hazard Warning.............227
Turn Signal...........60, 136, 280
Flooded Engine Starting...........166
Fluid Capacities...............280
Fluid Leaks...................60
Fluid Level Checks
Automatic Transaxle........268, 269
Cooling System.............263
Power Steering.............184
Fluid, Brake..................282
Fluids, Lubricants And Genuine Parts . . .281
Fog Lights................97, 279
Folding Rear Seat...............94
Four Wheel Drive............134, 178Systems.................178
Four Wheel Drive Operation.........178
Four-Way Hazard Flasher..........227
Freeing A Stuck Vehicle...........243
Fuel......................210
Adding..................212
Additives.................211
Capacity.................280
Filler Cap (Gas Cap)..........212
Gasoline.................210
Gauge..................133
Octane Rating..............210
Requirements..............210
Tank Capacity..............280
Fueling....................212
Fuses.....................274
Gas Cap (Fuel Filler Cap).......212, 256
Gasoline (Fuel).............210, 280
Gasoline, Clean Air..............211
Gauges
Fuel....................133
Gear Ranges..............170, 174
Gear Select Lever Override.........244
Glass Cleaning................273
Gross Axle Weight Rating..........213
320