2021 JEEP PATRIOT radiator cap

HAZARD WARNING FLASHERS
The Hazard Warning flasher switch is located
on the instrument panel below the climate
controls.
Push the switch to turn on the Hazard
Warning flasher. When the switch is
activated, all directional turn signals
will flash on and off to warn oncoming traffic of
an emergency. Push the switch a second time
to turn off the Hazard Warning flashers.
This is an emergency warning system and it
should not be used when the vehicle is in
motion. Use it when your vehicle is disabled and
it is creating a safety hazard for other motorists.
When you must leave the vehicle to seek assis-
tance, the Hazard Warning flashers will con-
tinue to operate even though the ignition is
placed in the OFF position.
NOTE:
With extended use the Hazard Warning
flashers may wear down your battery.
IF YOUR ENGINE OVERHEATS
In any of the following situations, you can
reduce the potential for overheating by taking
the appropriate action.
•On the highways — slow down.
•In city traffic — while stopped, place the
transmission in NEUTRAL, but do not in-
crease engine idle speed.
NOTE:
There are steps that you can take to slow
down an impending overheat condition:
•If your air conditioner (A/C) is on, turn it
off. The A/C system adds heat to the
engine cooling system and turning the
A/C off can help remove this heat.
•You can also turn the temperature control
to maximum heat, the mode control to
floor and the blower control to high. This
allows the heater core to act as a supple-
ment to the radiator and aids in removing
heat from the engine cooling system.CAUTION!
Driving with a hot cooling system could dam-
age your vehicle. If the pointer rises to the
H(red) mark, the instrument cluster will
sound a chime. When safe, pull over and
stop the vehicle with the engine at idle. Turn
off the air conditioning and wait until the
pointer drops back into the normal range. If
the pointer remains on theH(red) mark for
more than a minute, turn the engine off
immediately and call for service.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam com-
ing 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 or coolant bottle is hot.
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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.
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CAUTION!
•
Mixing of engine coolant (antifreeze) other
than specified Organic Additive Technology
(OAT) engine coolant (antifreeze), may re-
sult in engine damage and may decrease
corrosion protection. Organic Additive Tech-
nology (OAT) engine coolant is different and
should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant
(antifreeze) or any “globally compatible”
coolant (antifreeze). If a non-OAT engine
coolant (antifreeze) is introduced into the
cooling system in an emergency, the cooling
system will need to be drained, flushed, and
refilled with fresh OAT coolant (conforming
to MS.90032), by an authorized dealer as
soon as possible.
•Do not use water alone or alcohol-based
engine coolant (antifreeze) products. Do not
use additional rust inhibitors or antirust prod-
ucts, as they may not be compatible with the
engine coolant and may plug the radiator.
(Continued)
CAUTION!(Continued)
•This vehicle has not been designed for use
with propylene glycol-based engine coolant
(antifreeze). Use of propylene glycol-based
engine coolant (antifreeze) is not recom-
mended.
Adding Coolant
Your vehicle has been built with an improved
engine coolant (antifreeze) that allows ex-
tended maintenance intervals. This engine cool-
ant (antifreeze) can be used up to 10 years or
240,000 km before replacement. To prevent
reducing this extended maintenance period, it is
important that you use the same engine coolant
(antifreeze) throughout the life of your vehicle.
Please review these recommendations for us-
ing Organic Additive Technology (OAT) engine
coolant (antifreeze).
When adding engine coolant (antifreeze), a mini-
mum solution of 50% recommended MOPAR
Antifreeze/Coolant 10 Year/240,000 km Formula
OAT (Organic Additive Technology), or equivalent,
in water should be used. Use higher concentra-tions (not to exceed 70%) if temperatures below
−34°F (−37°C) are anticipated.
Use only high purity water such as distilled or
deionized water when mixing the water/engine
coolant (antifreeze) solution. The use of lower
quality water will reduce the amount of corro-
sion protection in the engine cooling system.
Please note that it is the owner’s responsibility to
maintain the proper level of protection against
freezing according to the temperatures occurring
in the area where the vehicle is operated.
NOTE:
Mixing engine coolant (antifreeze) types will
decrease the life of the engine coolant (an-
tifreeze) and will require more frequent cool-
ant changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss
of engine coolant (antifreeze), and to ensure
that engine coolant (antifreeze) will return to the
radiator from the coolant recovery bottle.
264

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

Oil (Engine)..........253, 254, 257
Power Steering.............184
Radiator (Coolant Pressure)......264
Car Washes..................271
Carbon Monoxide Warning..........58
Cargo Area Cover..............111
Cargo Area Features.............111
Cargo Compartment.............111
Light....................111
Luggage Carrier.............114
Cargo Light..................111
Cargo Load Floor...............112
Cargo Tie-Downs...............112
Cellular Phone.................67
Center High Mounted Stop Light......280
Chains, Tire..................202
Changing A Flat Tire.............228
Checking Your Vehicle For Safety......58
Checks, Safety.................58
Child Restraints
How To Stow An Unused ALR Seat Belt .56
Child Safety Locks...............23
Clean Air Gasoline..............211
Cleaning
Wheels..................272
Climate Control................150
Clutch.....................266Clutch Fluid..................266
Coin Holder..................111
Compact Disc (CD) Maintenance......150
Compact Spare Tire.............199
Compass Calibration.............144
Compass Variance..............143
Connector
UCI ....................145
Universal Consumer Interface (UCI) . .145
Console....................111
Coolant (Antifreeze).............280
Coolant Pressure Cap (Radiator Cap) . . .264
Cooling System................263
Adding Coolant (Antifreeze)......264
Coolant Level...........263, 265
Disposal Of Used Coolant.......265
Drain, Flush, And Refill
.........263
Inspection................265
Points To Remember..........265
Pressure Cap..............264
Radiator Cap...............264
Selection Of Coolant (Antifreeze) . . .263
Corrosion Protection.............271
Cupholders..................111
Customer Assistance.............296
Data Recorder, Event.............45Defroster, Rear Window...........114
Defroster, Windshield.......59, 152, 156
Delay (Intermittent) Wipers.........100
Diagnostic System, Onboard........255
Dimmer Switch, Headlight...........98
Dipsticks
Power Steering..............184
Disposal
Antifreeze (Engine Coolant)......265
Door Locks
Child-Protection Door Lock — Rear
Doors....................23
Door Locks.................21
KeyFob ..................21
Remote...................21
Remote Keyless Entry (RKE).......21
Door Locks, Automatic............22
Downshifting.................168
Driver’s Seat Back Tilt.............91
Driving.....................179
Off-Pavement..............179
Off-Road.................179
Electric Remote Mirrors............66
Electrical Power Outlets...........108
Electronic Brake Control System......187
Anti-Lock Brake System........187
319

Synthetic.................258
Viscosity.................257
Onboard Diagnostic System.........255
Operating Precautions............255
Operator Manual (Owner’s Manual)......6
Overheating, Engine.............227
Owner’s Manual (Operator Manual)......6
Paint Care..................271
Parking Brake.................185
Passing Light..................98
Personal Settings...............142
Pets.......................57
Phone, Cellular.................67
Phone, Hands-Free (Uconnect)........67
Power
Door Locks................21
Mirrors...................66
Outlet (Auxiliary Electrical Outlet) . . .108
Steering.................184
Sunroof..................106
Transfer Unit...............270
Windows..................24
Power Seats
Down....................89
Forward...................89
Rearward..................89Tilt......................89
Up......................89
Power Steering Fluid.............282
Power Transfer Unit.............270
Pregnant Women And Seat Belts......34
Preparation For Jacking...........229
Pretensioners
Seat Belts.................34
Programmable Electronic Features.....142
Radial Ply Tires................197
Radiator Cap (Coolant Pressure Cap) . . .264
Radio (Sound Systems)...........145
Radio Operation...............150
Rear Axle (Differential)............270
Rear Camera.................104
Rear Drive Assembly.............270
Rear Liftgate (Sedan).............25
Rear Seat, Folding...............94
Rear Window Defroster...........114
Rear Window Features............113
Rear Wiper/Washer.............113
Rearview Mirrors................65
Recorder, Event Data.............45
Recreational Towing.............223
Refrigerant..................260
Reminder, Seat Belt..............27Remote Control
Door Locks................16
Security Alarm...............14
Remote Keyless Entry (Sedan)........16
Remote Sound System (Radio) Controls . .149
Remote Starting System...........19
Repeater Lights, Side............279
Replacement Bulbs.............279
Replacement Keys...............14
Replacement Parts..............256
Replacement Tires..............201
Restraint, Head................92
Retractable Cargo Area Cover........111
Roll Over Warning................4
Roof Type Carrier...............114
Rotation, Tires................203
Safety Checks Inside Vehicle.........59
Safety Checks Outside Vehicle........60
Safety Tips...................58
Safety, Exhaust Gas..............58
Schedule, Maintenance........284, 285
Seat Belt
Adjustable Upper Shoulder Belt
Anchorage.................31
Automatic Locking Retractor (ALR) . . .34
Energy Management Feature.......34
323