2023 JEEP GRAND CHEROKEE brakes

262SAFETY
If a Forward Collision Warning with Mitigation event
begins at a speed below 39 mph (62 km/h), the
system may provide maximum braking to mitigate
the potential forward collision. If the Forward
Collision Warning with Mitigation event stops the
vehicle completely, the system will hold the vehicle
at a standstill for two seconds and then release the
brakes.

FCW Message

When the system determines a collision with the
vehicle in front of you is no longer probable, the
warning message will be deactivated Ú page 408.
NOTE:
The minimum speed for FCW activation is
3 mph (5 km/h).
The FCW alerts may be triggered on objects
other than vehicles, such as guardrails or sign
posts based on the course prediction. This is
expected and is a part of normal FCW activation
and functionality.
It is unsafe to test the FCW system. To prevent
such misuse of the system, after four Active
Braking events within an ignition cycle, the
Active Braking portion of FCW will be deacti -
vated until the next ignition cycle.
The FCW system is intended for on-road use
only. If the vehicle is taken off-road, the FCW
system should be deactivated to prevent unnec -
essary warnings to the surroundings. If the
vehicle enters 4WD Low, the FCW system will be
automatically deactivated.
FCW Braking Status And Sensitivity
The FCW Sensitivity and Active Braking status are
programmable through the Uconnect system
Ú page 204.
NOTE:
The default sensitivity of FCW is the “Medium”
setting and the system status is “Warning &
Braking”. This allows the system to warn the
driver of a possible collision with the vehicle in
front using audible/visual warnings and it
applies autonomous braking.
Changing the FCW status to the “Far” setting
allows the system to warn the driver of a
possible collision with the vehicle in front using
an audible/visual warning when the latter is at a
farther distance than the “Medium” setting. This
provides the most reaction time to avoid a
possible collision.
The “Far” setting may result in a greater number
of FCW possible collision warnings experienced.
Changing the FCW status to the “Near” setting
allows the system to warn the driver of a
possible collision with the vehicle in front when
the distance between the vehicle in the front is
much closer. This setting provides less reaction
time than the “Far” and “Medium” settings,
which allows for a more dynamic driving experi -
ence.
WARNING!
Forward Collision Warning (FCW) is not intended
to avoid a collision on its own, nor can FCW
detect every type of potential collision. The driver
has the responsibility to avoid a collision by
controlling the vehicle via braking and steering.
Failure to follow this warning could lead to
serious injury or death.

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SAFETY263
The “Near” setting may result in a lesser
number of FCW possible collision warnings
experienced.
NOTE:
Changing the FCW status to “Only Warning”
prevents the system from providing limited
active braking, or additional brake support if the
driver is not braking adequately in the event of
a potential frontal collision, but maintains the
audible and visual warnings.
Changing the FCW status to “Off” prevents the
system from providing autonomous braking, or
additional brake support if the driver is not
braking adequately in the event of a potential
frontal collision.
The system will retain the last setting selected
by the driver after ignition shut down.
FCW may not react to irrelevant objects such as
overhead objects, ground reflections, objects
not in the path of the vehicle, stationary objects
that are far away, oncoming traffic, or leading
vehicles with the same or higher rate of speed.
FCW will be disabled like ACC, with the unavail -
able screens.
FCW Limited Warning
If the instrument cluster displays “Automatic
Emergency Braking (AEB) Limited Service
Required” or “Limited Functionality Clean Front
Windshield” momentarily, there may be a
condition that limits FCW functionality. Although
the vehicle is still drivable under normal
conditions, the active braking may not be fully
available. Once the condition that limited the
system performance is no longer present, the
system will return to its full performance state. If
the problem persists, see an authorized dealer.
Service FCW Warning
If the system turns off, the instrument cluster
displays “AEB Unavailable Service Required.”
AEB Unavailable Service Required indicates there
is an internal system fault. Although the vehicle is
still drivable under normal conditions, have the
system checked by an authorized dealer.
Pedestrian Emergency Braking (PEB) —
If Equipped
PEB is a subsystem of the Forward Collision
Warning (FCW) system which provides the driver
with audible warnings and visual warnings, in the
instrument cluster display. It may apply limited
automatic braking when it detects a potential
frontal collision with a pedestrian/cyclist.
PEB Message

If a PEB event begins at a speed below 39 mph
(62 km/h), the system may provide maximum
braking to mitigate the potential collision with a
pedestrian/cyclist. If the PEB event stops the
vehicle completely, the system will hold the vehicle
at a standstill for two seconds and then release the
brakes. When the system determines a collision
with the pedestrian/cyclist in front of you is no
longer probable, the warning message will be
deactivated.
The minimum speed for PEB activation is 3 mph
(5 km/h).
6

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IN CASE OF EMERGENCY323
In the event it is observed that the temperature
gauge is moving towards or close to the HOT (H)
position, you can reduce the potential for
overheating by taking the appropriate action.
On the highways — slow down.
In city traffic — while stopped, place the trans -
mission in NEUTRAL (N), but do not increase the
engine idle speed while preventing vehicle
motion with the brakes.
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 supplement to the radiator and
aids in removing heat from the engine cooling
system.
MANUAL PARK RELEASE
To move the vehicle in cases where the
transmission will not shift out of PARK (P) (such as
a depleted battery), a Manual Park Release is
available.
To activate the Manual Park Release, see the
following steps:

1. Apply firm pressure to the brake pedal while seated in the driver’s seat.

2. Apply the Electric Park Brake (EPB), if possible.
3. Using a flathead screwdriver or similar tool, remove the Manual Park Release access
cover, which is to the lower left of the steering
column.

Manual Park Release Access Cover
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads
“H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H” and you hear
continuous chimes, turn the engine off
immediately and call for service.
WARNING!
You should be seated in the driver’s seat with
your foot firmly placed on the brake pedal to
maintain control of the vehicle before activating
the Manual Park Release. If possible, you should
apply the parking brake. Activating the Manual
Park Release will allow your vehicle to roll away if
it is not secured or properly connected to a tow
vehicle. Activating the Manual Park Release on
an unsecured vehicle could lead to serious
injury or death for those in or around the vehicle.
7

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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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388SERVICING AND MAINTENANCE
WHEEL AND WHEEL TRIM CARE
All wheels and wheel trim, especially aluminum
and chrome plated wheels, should be cleaned
regularly using mild (neutral Ph) soap and water to
maintain their luster and to prevent corrosion.
Wash wheels with the same soap solution
recommended for the body of the vehicle and
remember to always wash when the surfaces are
not hot to the touch. Your wheels are susceptible to deterioration
caused by salt, sodium chloride, magnesium
chloride, calcium chloride, etc., and other road
chemicals used to melt ice or control dust on dirt
roads. Use a soft cloth or sponge and mild soap to
wipe away promptly. Do not use harsh chemicals or
a stiff brush. They can damage the wheel’s
protective coating that helps keep them from
corroding and tarnishing.
When cleaning extremely dirty wheels including
excessive brake dust, care must be taken in the
selection of tire and wheel cleaning chemicals and
equipment to prevent damage to the wheels.
Mopar® Wheel Treatment or Mopar® Chrome
Cleaner or their equivalent is recommended or
select a non-abrasive, non-acidic cleaner for
aluminum or chrome wheels.
NOTE:If you intend parking or storing your vehicle for an
extended period after cleaning the wheels with
wheel cleaner, drive your vehicle and apply the
brakes to remove the water droplets from the
brake components. This activity will remove the
red rust on the brake rotors and prevent vehicle
vibration when braking.
Dark Vapor Chrome, Black Satin Chrome, or Low
Gloss Clear Coat Wheels
WARNING!
Limited use spares are for emergency use only.
Installation of this limited use spare tire affects
vehicle handling. With this tire, do not drive
more than the speed listed on the limited use
spare wheel. Keep inflated to the cold tire
inflation pressures listed on your Tire And
Loading Information Placard located on the
driver’s side B-pillar or the rear edge of the
driver’s side door. Replace (or repair) the original
equipment tire at the first opportunity and
reinstall it on your vehicle. Failure to do so could
result in loss of vehicle control.
CAUTION!
Avoid products or automatic car washes that use
acidic solutions or strong alkaline additives or
harsh brushes. Many aftermarket wheel
cleaners and automatic car washes may
damage the wheel's protective finish. Such
damage is not covered by the New Vehicle
Limited Warranty. Only car wash soap, Mopar®
Wheel Cleaner or equivalent is recommended.
CAUTION!
Do not use scouring pads, steel wool, a bristle
brush, metal polishes or oven cleaner. These
products may damage the wheel's protective
finish. Such damage is not covered by the New
Vehicle Limited Warranty. Only car wash soap,
Mopar® Wheel Cleaner or equivalent is
recommended.
CAUTION!

If your vehicle is equipped with these specialty
wheels, DO NOT USE wheel cleaners, abrasives, or
polishing compounds. They will permanently
damage this finish and such damage is not
covered by the New Vehicle Limited Warranty.
HAND WASH ONLY USING MILD SOAP AND WATER
WITH A SOFT CLOTH. Used on a regular basis; this
is all that is required to maintain this finish.

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396
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER (VIN)
The VIN is found on a label located on the left front
corner of the instrument panel pad, visible from
outside of the vehicle through the windshield.
Windshield VIN Label Location

NOTE:It is illegal to remove or alter the VIN.
BRAKE SYSTEM
Your vehicle is equipped with dual hydraulic brake
systems. If either of the two hydraulic systems lose
normal capability, the remaining system will still
function. However, there will be some loss of
overall braking effectiveness. You may notice
increased pedal travel during application, greater
pedal force required to slow or stop, and potential
activation of the Brake Warning Light.
In the event power assist is lost for any reason the
brakes will still function. However, the effort
required to brake the vehicle will be much greater
than that required with the power system
operating.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to
ensure that the wheel is properly mounted to the
vehicle. Any time a wheel has been removed and
reinstalled on the vehicle, the lug nuts/bolts
should be torqued using a properly calibrated
torque wrench using a six-sided (hex) deep wall
socket.
TORQUE SPECIFICATIONS
**Use only authorized dealer recommended lug
nuts/bolts and clean or remove any dirt or oil
before tightening.
Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion or
loose particles.
Wheel Mounting Surface

Lug Nut/Bolt
Torque **Lug Nut/
Bolt SizeLug Nut/Bolt
Socket Size
130 ft-lb
(176 N·m) M14 x 1.50 22 mm

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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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416 Onboard Diagnostic System
.......................... 117Operating Precautions................................... 117Operator Manual Owner's Manual........................................ 407Outside Rearview Mirrors................................ 51
P
Paint Care...................................................... 392Panic Alarm..................................................... 19Parking Brake................................................ 123ParkSenseFront And Rear.......................................... 159ParkSense Active Park Assist........................ 166ParkSense System, Rear............................... 159Passenger Screen......................................... 228Passive Entry................................................... 29Pedestrian Warning System.......................... 263Permissions................................................... 228Pets............................................................... 303Pinch Protection....................................... 84, 86Placard, Tire And Loading Information........... 379PowerBrakes....................................................... 396Distribution Center (Fuses).... 353, 361, 367Door Locks.................................................. 28
Inverter........................................................ 80Mirrors......................................................... 52Outlet (Auxiliary Electrical Outlet)................ 78Seats........................................................... 41Steering.................................................... 139Sunroof................................................. 83, 85Tilt/Telescoping Steering Column................ 32Windows...................................................... 81Power SeatsDown........................................................... 42Forward....................................................... 42Rearward..................................................... 42Up................................................................ 42Power Seats, Third Row................................... 43Pregnant Women And Seat Belts.................. 275Preparation For Jacking................................ 311Pressure Washing......................................... 338PretensionersSeat Belts................................................. 275Profile........................................................... 207Programmable Features............................... 204
Q
Quadra-Lift........................................... 114, 136Quadra-Trac.................................................. 131
R
Radial Ply Tires.............................................. 383Radiator Cap (Coolant Pressure Cap)............ 348RadioOff Road Pages......................................... 245Settings.................................................... 204Sound Setting........................................... 223Radio Operation............................................ 247Radio Remote Controls................................. 228Rain Sensitive Wiper System...........................65Rear Air Conditioning.......................................71Rear Axle (Differential).................................. 351Rear Camera........................................ 174, 181Rear Camera, Washer................................... 174Rear Cross Path............................................ 260Rear ParkSense System................................ 159Rear Seat Entertainment.............................. 234Rear Wiper/Washer.........................................66Rear Seat Reminder Alert............................. 249Reclining Front Seats.......................................37Recreational Towing...................................... 195Reformulated Gasoline................................. 398Refrigerant.................................................... 341Release, Hood..................................................87Reminder, Seat Belt...................................... 270Remote ControlStarting System...........................................24

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