2023 JEEP GRAND CHEROKEE air conditioning

GETTING TO KNOW YOUR VEHICLE67
Max A/C Button
Press and release to change the current
setting. The MAX A/C indicator
illuminates when MAX A/C is ON.
Performing this function again will cause
the MAX A/C operation to switch into manual mode
and the MAX A/C indicator will turn off. Pressing
other setting buttons will also cause the MAX A/C
to turn off.
MAX A/C sets the control for maximum cooling
performance.
NOTE:The MAX A/C button is only available on the touch -
screen.
A/C Button
Press and release the button on the
touchscreen or push and release the
button on the faceplate to change the
current setting. The A/C indicator
illuminates when A/C is on.
Recirculation Button
Press and release the Recirculation
button on the touchscreen or push and
release the button on the faceplate to
change the system between recirculation
mode and outside air mode. Recirculation can be
used when outside conditions such as smoke,
odors, dust, or high humidity are present.
Recirculation can be used in all modes. Recirculation may be unavailable if conditions
exist that could create fogging on the inside of the
windshield. The A/C can be deselected manually
without disturbing the mode control selection.
Continuous use of Recirculation mode may make
the inside air stuffy and window fogging may occur.
Extended use of this mode is not recommended.
Recirculation mode may automatically adjust to
optimize customer experience for warming,
cooling, dehumidification, etc.
In cold weather, use of Recirculation mode may
lead to excessive window fogging. The
Recirculation feature may be unavailable if
conditions exist that could create fogging on the
inside of the windshield.
AUTO Button
The AUTO button automatically controls
the interior cabin temperature by
adjusting distribution and amount of
airflow. Air Conditioning (A/C) may be
active during AUTO operation to improve
performance. Performing this function will cause
the system to switch between manual mode and
automatic modes Úpage 72. AUTO mode is highly
recommended for efficiency.
MAX Defrost Button
Push the MAX Defrost button to change
the current airflow setting to Defrost
mode. The indicator illuminates when this feature is on. Performing this function will
cause the automatic climate controls to change to
manual mode, and the following settings will occur:
The blower speed increases to full (all LEDs on)
The rear blower is off
The air conditioning compressor is turned on
(A/C LED off)
Both driver and passenger temperature controls
are set to HI
Defrost mode is selected (LED on)
Rear defroster is turned on (LED on)
The air recirculation is turned off (LED off)
If MAX Defrost mode is turned off, the Climate
Control system will return to the previous setting.
MAX Defrost automatically turns off after
20 minutes.
Rear Defrost Button
Press and release the button on the
touchscreen, or push and release the
button on the faceplate, to turn on the
rear window defroster and the heated
outside mirrors (if equipped). The Rear Defrost
indicator illuminates when the rear window
defroster is on. The rear window defroster
automatically turns off after 10 minutes.
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GETTING TO KNOW YOUR INSTRUMENT PANEL109
applied or a brake fault is detected. If the light does
not illuminate, have the light inspected by an
authorized dealer.
The light also will turn on when the parking brake
is applied with the ignition switch in the ON/RUN
position.
NOTE:This light shows only that the parking brake is
applied. It does not show the degree of brake appli -
cation.
Battery Charge Warning Light
This warning light will illuminate when the
battery is not charging properly. If it stays
on while the engine is running, there may
be a malfunction with the charging
system. Contact an authorized dealer as soon as
possible.
This indicates a possible problem with the
electrical system or a related component.
Door Open Warning Light
This indicator will illuminate when a door
is ajar/open and not fully closed.
NOTE:If the vehicle is moving, there will also be a single
chime.
Electric Power Steering (EPS) Fault
Warning Light
This warning light will turn on when
there's a fault with the EPS system
Ú page 139.
Electronic Throttle Control (ETC) Warning
Light
This warning light will illuminate to
indicate a problem with the ETC system.
If a problem is detected while the vehicle
is running, the light will either stay on or
flash depending on the nature of the problem.
Cycle the ignition when the vehicle is safely and
completely stopped and the transmission is placed
in the PARK position. The light should turn off. If
the light remains on with the vehicle running, your
vehicle will usually be drivable; however, see an
authorized dealer for service as soon as possible.
NOTE:This light may turn on if the accelerator and brake
pedals are pressed at the same time.
If the light continues to flash when the vehicle is
running, immediate service is required and you
may experience reduced performance, an
elevated/rough idle, or engine stall and your
vehicle may require towing. The light will come on
when the ignition is placed in the ON/RUN position
and remain on briefly as a bulb check. If the light
does not come on during starting, have the system
checked by an authorized dealer.
Engine Coolant Temperature Warning
Light
This warning light warns of an
overheated engine condition. If the
engine coolant temperature is too high,
this indicator will illuminate and a single
chime will sound. If the temperature reaches the
upper limit, a continuous chime will sound for four
minutes or until the engine is able to cool;
whichever comes first.
If the light turns on while driving, safely pull over
and stop the vehicle. If the Air Conditioning (A/C)
system is on, turn it off. Also, shift the transmission
into NEUTRAL (N) and idle the vehicle. If the
temperature reading does not return to normal,
turn the engine off immediately and call for service
Ú page 322.
WARNING!
Continued operation with reduced assist could
pose a safety risk to yourself and others. Service
should be obtained as soon as possible.
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340SERVICING AND MAINTENANCE
Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner
filters varies considerably. Only high quality
Mopar® filters should be used.
Engine Air Cleaner Filter Inspection and
Replacement
Engine Air Cleaner Filter Removal

1. With a suitable tool, fully loosen fasteners on the engine air cleaner filter cover.

2. Lift the engine air cleaner filter cover and rotate hinge to access the air cleaner filter.

Engine Air Cleaner Filter Cover

3. Remove the engine air cleaner filter from the housing assembly. Engine Air Cleaner Filter Installation
NOTE:Inspect and clean the housing assembly if signif
-
icant dirt or debris is present before replacing the
engine air cleaner filter.

1. Install the engine air cleaner filter into the housing assembly with the engine air cleaner
filter inspection surface facing downward.

2. Install the engine air cleaner filter cover onto the housing assembly locating tabs.
3. Tighten the fasteners on the engine air cleaner filter assembly.
AIR CONDITIONER MAINTENANCE
For best possible performance, your air conditioner
should be checked and serviced by an authorized
dealer at the start of each warm season. This
service should include cleaning of the condenser
fins and a performance test. Drive belt tension
should also be checked at this time.
1 — Engine Air Cleaner Filter Cover
2 — Fasteners
CAUTION!
Do not overtighten the engine air cleaner filter
cover lid screws or damage may result.
WARNING!
Use only refrigerants and compressor lubri
-
cants approved by the manufacturer for your
air conditioning system. Some unapproved
refrigerants are flammable and can explode,
injuring you. Other unapproved refrigerants or
lubricants can cause the system to fail,
requiring costly repairs. Refer to Warranty
Information Book, for further warranty infor -
mation.
The air conditioning system contains refrig -
erant under high pressure. To avoid risk of
personal injury or damage to the system,
adding refrigerant or any repair requiring lines
to be disconnected should be done by an
experienced technician.
CAUTION!
Do not use chemical flushes in your air
conditioning system as the chemicals can
damage your air conditioning components. Such
damage is not covered by the New Vehicle
Limited Warranty.

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SERVICING AND MAINTENANCE341
Refrigerant Recovery And Recycling —
R–1234yf
R–1234yf Air Conditioning Refrigerant is a
Hydrofluoroolefin (HFO) that is endorsed by the
Environmental Protection Agency and is an
ozone-friendly substance with a low
global-warming potential. The manufacturer
recommends that air conditioning service be
performed by an authorized dealer using recovery
and recycling equipment.
NOTE:Use only manufacturer approved A/C system PAG
compressor oil, and refrigerants.
Cabin Air Filter Replacement
For the proper maintenance intervals Úpage 331. The cabin air filter is located in the fresh air inlet
behind the glove compartment. Perform the
following procedure to replace the filter:

1. Open the glove compartment and remove all
contents.

2. There is a glove compartment travel stop on the right side of the glove compartment door.
Partially close the glove compartment door
and pull the travel stop toward you to release
the glove compartment travel stop.

Glove Compartment
3. With the glove compartment door loose,
remove the glove compartment tension tether
and tether clip by sliding the clip toward the
face of the glove compartment door and lifting
the clip out of glove compartment door.

Side Of Glove Compartment

4. Lower the glove compartment door to the floor.
5. Squeeze the retaining tabs together that secures the cabin air filter cover to the HVAC
housing. Unhinge the filter cover on the right
side to fully remove the cover.
WARNING!
Do not remove the cabin air filter while the
vehicle is running, or while the ignition is in the
ON/RUN mode. With the cabin air filter removed
and the blower operating, the blower can
contact hands and may propel dirt and debris
into your eyes, resulting in personal injury.
1 — Glove Compartment Travel Stop
2 — Glove Compartment Door
1 — Glove Compartment Tension Tether
2 — Glove Compartment Door
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350SERVICING AND MAINTENANCE
(Continued)
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 neces-
sary, install ONLY the correct type thermostat.
Other designs may result in unsatisfactory
engine cooling performance, poor gas mileage,
and increased emissions.
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically. For the proper maintenance intervals
Ú page 331.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should be
checked whenever the vehicle is serviced, or
immediately if the Brake System Warning Light is
on. If necessary, add fluid to bring level within the
designated marks on the side of the reservoir of
the brake master cylinder. Be sure to clean the top
of the master cylinder area before removing cap.
With disc brakes, fluid level can be expected to fall
as the brake pads wear. Brake fluid level should be
checked when pads are replaced. If the brake fluid
is abnormally low, check the system for leaks.
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 temperatures, excessive
lining wear, and possible brake damage. You
would not have your full braking capacity in an
emergency.
WARNING!
Use only manufacturer's recommended brake
fluid Ú page 402. Using the wrong type of
brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in an open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure. This
could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.
Do not allow petroleum-based fluid to contam -
inate the brake fluid. Brake seal components
could be damaged, causing partial or
complete brake failure. This could result in a
collision.
WARNING!

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392SERVICING AND MAINTENANCE
TRACTION GRADES
The Traction grades, from highest to
lowest, are AA, A, B, and C. These grades
represent the tire's ability to stop on wet
pavement, as measured under
controlled conditions on specified
government test surfaces of asphalt and
concrete. A tire marked C may have poor
traction performance.
TEMPERATURE GRADES
The Temperature grades are A (the
highest), B, and C, representing the tire's
resistance to the generation of heat and
its ability to dissipate heat, when tested
under controlled conditions on a
specified indoor laboratory test wheel. Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. The grade C corresponds to a
level of performance, which all
passenger vehicle tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A
represent higher levels of performance
on the laboratory test wheel, than the
minimum required by law.
STORING THE VEHICLE
If you are storing your vehicle for more than three
weeks, we recommend that you take the following
steps to minimize the drain on your vehicle's
battery:
Disconnect the negative cable from battery.
Any time you store your vehicle or keep it out of
service (i.e., vacation) for two weeks or more,
run the air conditioning system at idle for about
five minutes in the fresh air and high blower
setting. This will ensure adequate system lubri-
cation to minimize the possibility of compressor
damage when the system is started again.
BODYWORK
PROTECTION FROM ATMOSPHERIC
A
GENTS
Vehicle body care requirements vary according to
geographic locations and usage. Chemicals that
make roads passable in snow and ice and those
that are sprayed on trees and road surfaces during
other seasons are highly corrosive to the metal in
your vehicle. Outside parking, which exposes your
vehicle to airborne contaminants, road surfaces on
which the vehicle is operated, extreme hot or cold
weather and other extreme conditions will have an
adverse effect on paint, metal trim, and underbody
protection.
WARNING!
The traction grade assigned to this tire is based
on straight-ahead braking traction tests, and
does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
WARNING!
The temperature grade for this tire is
established for a tire that is properly inflated and
not overloaded. Excessive speed, underinflation,
or excessive loading, either separately or in
combination, can cause heat buildup and
possible tire failure.

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409
INDEX
A
About Your Brakes......................................... 396Accessory Drive Belt Inspection..................... 342Active Driving Assist System.......................... 152
Active Lane Management System.. 112, 115, 171
Adaptive Cruise Control (ACC)..... 113, 115, 142Adding Engine Coolant (Antifreeze)............... 347Adding Fuel.................................................... 183Additives, Fuel............................................... 398AdjustDown........................................................... 42Forward....................................................... 42Rearward..................................................... 42Up................................................................ 42Air Bag........................................................... 108Air Bag Operation...................................... 279Air Bag Warning Light...................... 277, 280Driver Knee Air Bag................................... 284Enhanced Accident Response......... 287, 329
Event Data Recorder (EDR)...................... 329Front Air Bag............................................. 280If Deployment Occurs............................... 286Knee Impact Bolsters............................... 284Maintaining Your Air Bag System.............. 288Maintenance............................................ 288Redundant Air Bag Warning Light............. 278Side Air Bags............................................ 284Transporting Pets..................................... 303Air Bag Light......................................... 277, 303
Air Cleaner, Engine (Engine Air Cleaner Filter)... 339
Air Conditioner Maintenance........................ 340Air Conditioner Refrigerant.................. 340, 341Air Conditioner System................................. 340Air Conditioning................................................ 67Max............................................................. 67Rear............................................................. 71Air Conditioning Filter....................................... 73Air Conditioning System................................... 72Air Conditioning, Operating Tips....................... 73
Air Filter......................................................... 339Air PressureTires.......................................................... 382AlarmArm The System....................................26, 27Disarm The System......................................27Panic............................................................19Rearm The System......................................27Security Alarm.......................................... 111Alarm SystemSecurity Alarm.............................................26Alterations/ModificationsVehicle.........................................................12Amazon FireTV..................................... 234, 240Amazon FireTV Built-in.................................. 234Ambient LightMulticolor.....................................................63Antifreeze (Engine Coolant).................. 347, 400Disposal.................................................... 348
11

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412 Emergency Freeing A Stuck Vehicle
............................. 325Hazard Warning Flashers.......................... 307Jump Starting............................................ 319Manual Park Release................................ 323Refueling................................................... 321Tow Hooks................................................. 328Towing A Disabled Vehicle......................... 326Emergency Braking........................................ 263Emergency, In Case OfJacking...................................................... 310Emission Control System Maintenance......... 118Engine........................................................... 334Air Cleaner................................................. 339Break-In Recommendations...................... 122Checking Oil Level..................................... 337Compartment......................... 334, 335, 336Compartment Identification... 334, 335, 336Coolant (Antifreeze)................................... 109Cooling...................................................... 346Exhaust Gas Caution....................... 305, 306Fails To Start............................................. 122Flooded, Starting....................................... 122Fuel Requirements.......................... 397, 400Jump Starting............................................ 319Oil.................................................... 338, 400
Oil Filler Cap............................................. 334Oil Filter.................................................... 339Oil Selection........................... 338, 400, 401Oil Synthetic............................................. 339Starting..................................................... 119Engine Oil Life Reset
b
............................... 100
Enhanced Accident Response Feature...287, 329
Ethanol......................................................... 398Exhaust Gas Cautions.......................... 305, 306Exhaust System................................... 305, 345Extend, Seats................................................... 43Exterior Lights............................... 57, 305, 374
F
FamCam System........................................... 177FiltersAir Cleaner................................................ 339Air Conditioning..................................73, 341Engine Oil................................................. 339Engine Oil Disposal................................... 339FireTV............................................................ 240FlashersTurn Signals.................................... 116, 305Flash-To-Pass................................................... 59Flooded Engine Starting................................ 122Fluid Capacities............................................ 400
Fluid Leaks.................................................... 305Fluid Level ChecksBrake........................................................ 350Engine Oil................................................. 337Fluids And Lubricants.................................... 402Fog Lights.............................................. 61, 115Fold-Flat Seats.................................................36Forward Collision Warning.......... 113, 115, 261Four Wheel Drive............... 113, 114, 131, 134Operation.................................................. 131Shifting..................................................... 114System...................................................... 131Four Wheel Drive Operation.......................... 131Freeing A Stuck Vehicle................................. 325Front And Rear ParkSense System............... 159Front Axle (Differential)................................. 351Front View Camera........................................ 176Fuel............................................................... 397Additives................................................... 398Clean Air................................................... 398Ethanol..................................................... 398Gasoline................................................... 397Materials Added....................................... 398Methanol.................................................. 398

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