2020 JEEP PATRIOT check engine

WARNING!
Improper towing can lead to an injury acci-
dent. Follow these guidelines to make your
trailer towing as safe as possible:
•Make certain that the load is secured in the
trailer and that it will not shift during travel.
When trailering cargo that is not fully se-
cured, dynamic load shifts can occur that
may be difficult for the driver to control. You
could lose control of your vehicle and have
an accident.
•All trailer hitches should be professionally
installed on your vehicle.
•When hauling cargo or towing a trailer, do
not overload your vehicle or trailer. Over-
loading can cause a loss of control, poor
performance, or damage to brakes, axle,
engine, transmission, steering, suspen-
sion, chassis structure, or tires.
(Continued)
WARNING!(Continued)
•Safety chains must always be used be-
tween your vehicle and trailer. Always con-
nect the chains to the frame or hook re-
tainers of the vehicle hitch. Cross the
chains under the trailer tongue and allow
enough slack for turning corners.
•Vehicles with trailers should not be parked
on a grade. When parking, apply the park-
ing brake on the tow vehicle. Always, block
or"chock"the trailer wheels.
•GCWR must not be exceeded.
•Total weight must be distributed be-
tween the tow vehicle and the trailer
such that the following four ratings are
not exceeded:
1. GVWR
2. GTW
3. GAWR
4. Tongue weight rating for the trailer hitch
utilized.Towing Requirements — Tires
•Do not attempt to tow a trailer while using a
compact spare tire.
•Proper tire inflation pressures are essential
for the safe and satisfactory operation of your
vehicle. Refer to “Tires – General Informa-
tion” in “Starting and Operating” for proper
tire inflation procedures.
•Check the trailer tires for proper tire inflation
pressures before trailer usage.
•Check for signs of tire wear or visible tire
damage before towing a trailer. Refer to
“Tires – General Information” in “Starting and
Operating” for the proper inspection
procedure.
•When replacing tires, refer to “Tires – Gen-
eral Information” in “Starting and Operating”
for proper tire replacement procedures. Re-
placing tires with a higher load carrying ca-
pacity will not increase the vehicle’s GVWR
and GAWR limits.
217

NOTE:
Do not remove foreign objects (e.g., screws
or nails) from the tire.
(C) Injecting Tire Service Kit Sealant Into
The Deflated Tire:
•Always start the engine before turning ON
the Tire Service Kit.
NOTE:
Manual transmission vehicles must have the
parking brake engaged and the gear selec-
tor in NEUTRAL.
•After pushing the Power Button (4), the seal-
ant (white fluid) will flow from the Sealant
Bottle (1) through the Sealant Hose (6) and
into the tire.
NOTE:
Sealant may leak out through the puncture
in the tire.
If the sealant (white fluid) does not flow
within0–10seconds through the Sealant
Hose (6):
1. Push the Power Button (4) to turn Off the Tire
Service Kit. Disconnect the Sealant Hose (6)from the valve stem. Make sure the valve
stem is free of debris. Reconnect the Seal-
ant Hose (6) to the valve stem. Check that
the Mode Select Knob (5) is in the Sealant
Mode position and not Air Mode. Push the
Power Button (4) to turn On the Tire Service
Kit.
2. Connect the Power Plug (8) to a different 12
Volt power outlet in your vehicle or another
vehicle, if available. Make sure the engine is
running before turning ON the Tire Service
Kit.
3. The Sealant Bottle (1) may be empty due to
previous use. Call for assistance.
NOTE:
If the Mode Select Knob (5) is on Air Mode
and the pump is operating, air will dispense
from the Air Pump Hose (7) only, not the
Sealant Hose (6).
If the sealant (white fluid) does flow through
the Sealant Hose (6):
1. Continue to operate the pump until sealant is
no longer flowing through hose (typicallytakes 30 - 70 seconds). As the sealant flows
through the Sealant Hose (6), the Pressure
Gauge (3) can read as high as 70 psi (4.8
Bar). The Pressure Gauge (3) will decrease
quickly from approximately 70 psi (4.8 Bar)
to the actual tire pressure when the Sealant
Bottle (1) is empty.
2. The pump will start to inject air into the tire
immediately after the Sealant Bottle (1) is
empty. Continue to operate the pump and
inflate the tire to the pressure indicated on
the tire pressure label on the driver-side
latch pillar (recommended pressure). Check
the tire pressure by looking at the Pressure
Gauge (3).
If the tire does not inflate to at least 26 psi
(1.8 Bar) pressure within 15 minutes:
•The tire is too badly damaged. Do not at-
tempt to drive the vehicle further. Call for
assistance.
238

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

CAUTION!
The A/C air filter is identified with an arrow to
indicate airflow direction through the filter.
Failure to properly install the filter will result
in the need to replace it more often.
7. Rotate the glove compartment door back
into position.
Body LubricationLocks and all body pivot points, including such
items as seat tracks, door hinge pivot points
and rollers, liftgate, tailgate, decklid, sliding
doors and hood hinges, should be lubricated
periodically with a lithium based grease, such
as MOPAR Spray White Lube to assure quiet,
easy operation and to protect against rust and
wear. Prior to the application of any lubricant,
the parts concerned should be wiped clean to
remove dust and grit; after lubricating excess oil
and grease should be removed. Particular at-
tention should also be given to hood latching
components to ensure proper function. When
performing other underhood services, the hoodlatch, release mechanism and safety catch
should be cleaned and lubricated.
The external lock cylinders should be lubricated
twice a year, preferably in the Fall and Spring.
Apply a small amount of a high quality lubricant,
such as MOPAR Lock Cylinder Lubricant di-
rectly into the lock cylinder.
Windshield Wiper BladesClean the rubber edges of the wiper blades and
the windshield periodically with a sponge or soft
cloth and a mild nonabrasive cleaner. This will
remove accumulations of salt or road film.
Operation of the wipers on dry glass for long
periods may cause deterioration of the wiper
blades. Always use washer fluid when using the
wipers to remove salt or dirt from a dry wind-
shield.
Avoid using the wiper blades to remove frost or
ice from the windshield. Keep the blade rubber
out of contact with petroleum products such as
engine oil, gasoline, etc.NOTE:
Life expectancy of wiper blades varies de-
pending on geographical area and fre-
quency of use. Poor performance of blades
may be present with chattering, marks, wa-
ter lines or wet spots. If any of these condi-
tions are present, clean the wiper blades or
replace as necessary.Adding Washer FluidThe washer fluid reservoir is located in the
engine compartment, and the fluid level should
be checked at regular intervals. Fill the reservoir
with windshield washer solvent only (not radia-
tor antifreeze).
When refilling the washer fluid reservoir, take
some washer fluid and apply it to a cloth or
towel and wipe clean the wiper blades, this will
help blade performance. To prevent freeze-up
of your windshield washer system in cold
weather, select a solution or mixture that meets
or exceeds the temperature range of your cli-
mate. This rating information can be found on
most washer fluid containers.
261

NOTE:
Intentional tampering with emissions con-
trol systems can result in civil penalties
being assessed against you.
In unusual situations involving grossly malfunc-
tioning engine operation, a scorching odor may
suggest severe and abnormal catalyst over-
heating. If this occurs, stop the vehicle, turn off
the engine and allow it to cool. Service, includ-
ing a tune-up to manufacturer’s specifications,
should be obtained immediately.
To minimize the possibility of catalytic converter
damage:
•Do not shut off the engine or interrupt the
ignition, when the transmission is in gear and
the vehicle is in motion.
•Do not try to start the engine by pushing or
towing the vehicle.
•Do not idle the engine with any spark plug
wires disconnected or removed, such as
when diagnostic testing, or for prolonged
periods during very rough idle or malfunction-
ing operating conditions.Cooling System
WARNING!
•When working near the radiator cooling
fan, disconnect the fan motor lead or turn
the ignition switch to the OFF position. The
fan is temperature controlled and can start
at any time the ignition switch is in the ON
position.
•You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam
coming from under the hood, do not open
the hood until the radiator has had time to
cool. Never try to open a cooling system
pressure cap when the radiator is hot.
Coolant Checks
Check engine coolant (antifreeze) protection
every 12 months (before the onset of freezing
weather, where applicable). If the engine cool-
ant (antifreeze) is dirty or rusty in appearance,
the system should be drained, flushed, and
refilled with fresh engine coolant (antifreeze).Check the front of the A/C condenser for any
accumulation of bugs, leaves, etc. If dirty, clean
by gently spraying water from a garden hose
vertically down the face of the condenser.
Check the coolant recovery bottle tubing for
brittle rubber, cracking, tears, cuts, and tight-
ness of the connection at the bottle and radiator.
Inspect the entire system for leaks.
Cooling System – Drain, Flush, And Refill
Refer to the “Maintenance Schedule” for the
proper maintenance intervals.
If the engine coolant (antifreeze) is dirty or
contains a considerable amount of sediment,
clean and flush with a reliable cooling system
cleaner. Follow with a thorough rinsing to re-
move all deposits and chemicals. Properly dis-
pose of old engine coolant (antifreeze).
Selection Of Coolant
Refer to “Fluids, Lubricants, And Genuine
Parts” in “Maintaining Your Vehicle” for further
information.
263

The cap should be inspected and cleaned if
there is any accumulation of foreign material on
the sealing surfaces.
WARNING!
•The warning words “DO NOT OPEN HOT”
on the cooling system pressure cap are a
safety precaution. Never add engine cool-
ant (antifreeze) when the engine is over-
heated. Do not loosen or remove the cap
to cool an overheated engine. Heat causes
pressure to build up in the cooling system.
To prevent scalding or injury, do not re-
move the pressure cap while the system is
hot or under pressure.
•Do not use a pressure cap other than the
one specified for your vehicle. Personal
injury or engine damage may result.
Disposal Of Used Engine Coolant
Used ethylene glycol-based engine coolant (an-
tifreeze) is a regulated substance requiring
proper disposal. Check with your local authori-
ties to determine the disposal rules for yourcommunity. To prevent ingestion by animals or
children, do not store ethylene glycol-based
engine coolant (antifreeze) in open containers
or allow it to remain in puddles on the ground. If
ingested by a child or pet, seek emergency
assistance immediately. Clean up any ground
spills immediately.
Coolant Level
The coolant bottle provides a quick visual
method for determining that the coolant level is
adequate. With the engine idling and warm to
normal operating temperature, the level of the
engine coolant (antifreeze) in the bottle should
be between the “ADD” and “FULL” lines shown
on the bottle.
The radiator normally remains completely full,
so there is no need to remove the radiator cap
unless checking for the coolant freeze point or
replacing the engine coolant (antifreeze). Ad-
vise your service attendant of this. As long as
the engine operating temperature is satisfac-
tory, the coolant bottle need only be checked
once a month.When additional engine coolant (antifreeze) is
needed to maintain the proper level, it should be
added to the coolant bottle. Do not overfill.
Points To Remember
NOTE:
When the vehicle is stopped after a few
miles/kilometers of operation, you may ob-
serve vapor coming from the front of the
engine compartment. This is normally a re-
sult of moisture from rain, snow, or high
humidity accumulating on the radiator and
being vaporized when the thermostat opens,
allowing hot engine coolant (antifreeze) to
enter the radiator.
If an examination of your engine compartment
shows no evidence of radiator or hose leaks,
the vehicle may be safely driven. The vapor will
soon dissipate.
•Do not overfill the coolant expansion bottle.
•Check the coolant freeze point in the radiator
and in the coolant expansion bottle. If engine
coolant (antifreeze) needs to be added, the
contents of the coolant expansion bottle must
also be protected against freezing.
265

•If frequent engine coolant (antifreeze) addi-
tions are required, the cooling system should
be pressure tested for leaks.
•Maintain engine coolant (antifreeze) concen-
tration at a minimum of 50% OAT coolant
(conforming to MS.90032) and distilled water
for proper corrosion protection of your engine
which contains aluminum components.
•Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.
•Keep the front of the radiator clean. If your
vehicle is equipped with air conditioning,
keep the front of the condenser clean.
•Do not change the thermostat for Summer or
Winter operation. If replacement is ever nec-
essary, install ONLY the correct type thermo-
stat. Other designs may result in unsatisfac-
tory engine coolant (antifreeze) performance,
poor gas mileage, and increased emissions.
Brake SystemIn order to assure brake system performance,
all brake system components should be in-spected periodically. Refer to the “Maintenance
Schedule” for the proper maintenance intervals.
WARNING!
Riding the brakes can lead to brake failure
and possibly a collision. Driving with your
foot resting or riding on the brake pedal can
result in abnormally high brake tempera-
tures, excessive lining wear, and possible
brake damage. You would not have your full
braking capacity in an emergency.
Brake Master Cylinder
The fluid level in the master cylinder should be
checked when performing under hood services,
or immediately if the brake system warning light
is on.
Be sure to clean the top of the master cylinder
area before removing the cap. If necessary, add
fluid to bring the fluid level up to the require-
ments described on the brake fluid reservoir.
Fluid level can be expected to fall as the brake
pads wear. The brake fluid level should be
checked when the pads are replaced. However,low fluid level may be caused by a leak and a
checkup may be needed.
NOTE:
If your vehicle is equipped with a manual
transmission, the brake fluid reservoir sup-
plies fluid to both the brake system and the
clutch release system. The two systems are
separated in the reservoir, and a leak in one
system will not affect the other system. The
manual transmission clutch release system
should not require fluid replacement during
the life of the vehicle. If the brake fluid
reservoir is low and the brake system does
not indicate any leaks or other problems, it
may be a result of a leak in the hydraulic
clutch release system. See your local autho-
rized dealer for service.
Use only manufacturer’s recommended brake
fluid. Refer to “Fluids, Lubricants, And Genuine
Parts” in “Maintaining Your Vehicle” for further
information.
266