2021 JEEP PATRIOT radiator

Blower Control
Rotate this control to
regulate the amount of
air forced through the
ventilation system in
any mode. The blower
speed increases as you
move the control to the
right from the “O” (OFF)
position. There are
seven blower speeds.
Temperature Control
Rotate this control to
regulate the tempera-
ture of the air inside the
passenger compart-
ment. Rotating the dial
left into the blue area of
the scale indicates
cooler temperatures,
while rotating right into
the red area indicates warmer temperatures.NOTE:
If your air conditioning performance seems
lower than expected, check the front of the
A/C condenser located in front of the radia-
tor for an accumulation of dirt or insects.
Clean with a gentle water spray from behind
the radiator and through the condenser.
Fabric front fascia protectors may reduce
airflow to the condenser, reducing air con-
ditioning performance.
Air Conditioning Control
Push this button to en-
gage the Air Condition-
ing. A light will illuminate
when the Air Condition-
ing system is engaged.
Rotating the dial left into
the blue area of the
scale indicates cooler
temperatures, while ro-
tating right into the red
area indicates warmer temperatures.NOTE:
The air conditioning compressor will not
engage until the engine has been running
for about 10 seconds.
•MAX A/C
For maximum cooling use the A/C and recircu-
lation buttons at the same time.
•ECONOMY MODE
If economy mode is desired, push the A/C
button to turn OFF the indicator light and the
A/C compressor. Then, select Panel, Bi-Level or
Floor mode and move the temperature control
to the desired temperature.
Mode Control (Air Direction)
Rotate this control to
choose from several
patterns of air distribu-
tion. You can select ei-
ther a primary mode as
identified by the sym-
bols on the control, or a
blend of two of these
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NOTE:
•The temperature setting can be adjusted
at anytime without affecting automatic
operation.
•Pushing the Air Conditioning Control but-
ton while in AUTO mode will cause the
LED in the control button to flash three
times and then turn off. This indicatesthat the system is in AUTO mode and
requesting the air conditioning is not
necessary.
•If your air conditioning performance
seems lower than expected, check the
front of the A/C condenser located in front
of the radiator for an accumulation of dirt
or insects. Clean with a gentle water
spray from behind the radiator andthrough the condenser. Fabric front fas-
cia protectors may reduce airflow to the
condenser, reducing air conditioning
performance.
•Please read the Automatic Temperature
Control Operation Chart that follows for
details.
154

CAUTION!(Continued)
water. Water can cause permanent damage
to engine, driveline or other vehicle compo-
nents and your brakes will be less effective
once wet and/or muddy.
Before You Cross Any Type Of Water
As you approach any type of water, you need to
determine if you can cross it safely and respon-
sibly. If necessary, get out and walk through the
water or probe it with a stick. You need to be
sure of its depth, approach angle, current and
bottom condition. Be careful of murky or muddy
waters; check for hidden obstacles. Make sure
you will not be intruding on any wildlife, and you
can recover the vehicle if necessary. The key to
a safe crossing is the water depth, current and
bottom conditions. On soft bottoms, the vehicle
will sink in, effectively increasing the water level
on the vehicle. Be sure to consider this when
determining the depth and the ability to safely
cross.Crossing Puddles, Pools, Flooded Areas
Or Other Standing Water
Puddles, pools, flooded or other standing water
areas normally contain murky or muddy waters.
These water types normally contain hidden
obstacles and make it difficult to determine an
accurate water depth, approach angle, and
bottom condition. Murky or muddy water holes
are where you want to hook up tow straps prior
to entering. This makes for a faster, cleaner and
easier vehicle recovery. If you are able to deter-
mine you can safely cross, than proceed using
the low and slow method.
CAUTION!
Muddy waters can reduce the cooling sys-
tem effectiveness by depositing debris onto
the radiator.
After Driving Off-RoadOff-road operation puts more stress on your
vehicle than does most on-road driving. After
going off-road, it is always a good idea to check
for damage. That way you can get any problemstaken care of right away and have your vehicle
ready when you need it.
•Completely inspect the underbody of your
vehicle. Check tires, body structure, steering,
suspension, and exhaust system for dam-
age.
•Inspect the radiator for mud and debris and
clean as required.
•Check threaded fasteners for looseness, par-
ticularly on the chassis, drivetrain compo-
nents, steering, and suspension. Retighten
them, if required, and torque to the values
specified in the Service Manual.
•Check for accumulations of plants or brush.
These things could be a fire hazard. They
might hide damage to fuel lines, brake hoses,
axle pinion seals, and propeller shafts.
•After extended operation in mud, sand, wa-
ter, or similar dirty conditions, have the radia-
tor, fan, brake rotors, wheels, brake linings,
and axle yokes inspected and cleaned as
soon as possible.
183

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.
227

JUMP-STARTING
PROCEDURES
If your vehicle has a discharged battery it can be
jump-started using a set of jumper cables and a
battery in another vehicle or by using a portable
battery booster pack. Jump-starting can be dan-
gerous if done improperly so please follow the
procedures in this section carefully.
NOTE:
When using a portable battery booster pack
follow the manufacturer’s operating instruc-
tions and precautions.
CAUTION!
Do not use a portable battery booster pack or
any other booster source with a system
voltage greater than 12 Volts or damage to
the battery, starter motor, alternator or elec-
trical system may occur.
WARNING!
Do not attempt jump-starting if the battery is
frozen. It could rupture or explode and cause
personal injury.
Preparations For Jump-StartThe battery in your vehicle is located in the front
of the engine compartment below the air intake
duct. To access the battery remove the air
intake duct by turning the two finger screws,
located on the radiator support.
WARNING!
•Take care to avoid the radiator cooling fan
whenever the hood is raised. It can start
anytime the ignition switch is ON. You can
be injured by moving fan blades.
•Remove any metal jewelry such as rings,
watch bands and bracelets that could
make an inadvertent electrical contact.
You could be seriously injured.
(Continued)Air Intake Finger Screws
Positive Battery Post
241

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

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