2023 JEEP GRAND CHEROKEE ignition

STARTING AND OPERATING141
TO START THE ENGINE WHILE IN
A
UTOSTOP MODE
While in a forward gear, the engine will start when
the brake pedal is released or the throttle pedal is
pressed. The transmission will automatically
re-engage upon engine restart.
Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:
The transmission selector is moved out of
DRIVE.
To maintain cabin temperature comfort.
HVAC is set to full defrost mode.
HVAC system temperature or fan speed is
manually adjusted.
Battery voltage drops too low.
Stop/Start OFF switch is pushed.
A Stop/Start system error occurs.
Steering angle is beyond threshold.
TO MANUALLY TURN OFF THE STOP/
S
TART SYSTEM

Stop/Start OFF Switch

Push the Stop/Start OFF switch (located on the
switch bank). The light on the switch will illuminate.
The “Stop/Start OFF” message will appear in the
instrument cluster display and the Autostop mode
will be disabled Ú page 98.
NOTE:The Stop/Start system will reset itself back to the
ON mode every time the ignition is turned OFF and
back ON.
TO MANUALLY TURN ON THE STOP/
S
TART SYSTEM
Push the Stop/Start OFF switch (located on the
switch bank). The light on the switch will turn off.
SYSTEM MALFUNCTION
If there is a malfunction in the Stop/Start system,
the system will not shut down the engine. A
“Service Stop/Start System” message and a yellow
Stop/Start telltale will appear in the instrument
cluster display Ú page 98.
If the “Service Stop/Start System” message
appears in the instrument cluster display, have the
system checked by an authorized dealer.
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STARTING AND OPERATING145
NOTE:
Keeping your foot on the accelerator pedal can
cause the vehicle to continue to accelerate
beyond the set speed. If this occurs, the
message “DRIVER OVERRIDE” will display in the
instrument cluster display.
If you continue to accelerate beyond the set
speed while ACC is enabled, the system will not
be controlling the distance between your vehicle
and the vehicle ahead. The vehicle speed will
only be determined by the position of the accel-
erator pedal.
To Cancel
The following conditions cancel the ACC or Fixed
Speed Cruise Control systems:
The brake pedal is applied
The CANC (cancel) button is pushed
The gear selector is removed from the DRIVE
position
The Electronic Stability Control/Traction Control
System (ESC/TCS) activates
The vehicle parking brake is applied
The Trailer Sway Control (TSC) activates
The braking temperature exceeds normal range
(overheated) The following conditions will only cancel the ACC
system:
Driver seat belt is unbuckled at low speeds
Driver door is opened at low speeds
To Turn Off
The system will turn off and erase the set speed in
memory if:
The Adaptive Cruise Control (ACC) on/off button
is pushed
Fixed Speed Cruise Control on/off button is
pushed
The ignition is placed in the OFF position
4WD Low is engaged
The Active Driving Assist (ADA) system (if
equipped) is enabled/engaged and the ADA
button is pressed
NOTE:If ADA is not enabled/engaged and the ADA button
is pressed, the ACC system will remain on or turn
on, depending on the state of ACC at the time of
the ADA button press.
To Resume
If there is a set speed in memory, push the RES
(resume) button and remove your foot from the
accelerator pedal. The instrument cluster display
will show the last set speed. Resume can be used at any speed above 20 mph
(32 km/h) when only Fixed Speed Cruise Control is
being used.
Resume can be used at any speed above 0 mph
(0 km/h) when ACC is active.
NOTE:
While in ACC mode, when the vehicle comes to
a complete stop longer than two seconds, the
driver will either have to push the RES (resume)
button or press the accelerator pedal to reen
-
gage the ACC system.
ACC cannot be resumed if there is a stationary
vehicle in front of your vehicle in close proximity.
WARNING!
The Resume function should only be used if
traffic and road conditions permit. Resuming a
set speed that is too high or too low for
prevailing traffic and road conditions could
cause the vehicle to accelerate or decelerate too
sharply for safe operation. Failure to follow these
warnings can result in a collision and death or
serious personal injury.
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STARTING AND OPERATING149
When the condition that created limited
functionality is no longer present, the system will
return to full functionality.
NOTE:If the “ACC Limited Functionality Clean Front Wind -
shield” message occurs frequently (e.g. more than
once on every trip) without any snow, rain, mud, or
other obstruction, have the windshield and forward
facing camera inspected at an authorized dealer.
SERVICE ACC WARNING
If the system turns off, and the instrument cluster
display reads “ACC Unavailable Service Required”
or “Cruise Unavailable Service Required”, there
may be an internal system fault or a temporary
malfunction that limits ACC functionality. Although
the vehicle is still drivable under normal
conditions, ACC will be temporarily unavailable. If
this occurs, try activating ACC again later, following
an ignition cycle. If the problem persists, see an
authorized dealer.
Precautions While Driving With ACC
In certain driving situations, ACC may have
detection issues. In these cases, ACC may brake
late or unexpectedly. The driver needs to stay alert
and may need to intervene. The following are
examples of these types of situations:
TOWING A TRAILER
Towing a trailer is not recommended when using
ACC.
OFFSET DRIVING
ACC may not detect a vehicle in the same lane that
is offset from your direct line of travel, or a vehicle
merging in from a side lane. There may not be
sufficient distance to the vehicle ahead. The offset
vehicle may move in and out of the line of travel,
which can cause your vehicle to brake or
accelerate unexpectedly.
Offset Driving Condition Example
TURNS AND BENDS
When driving on a curve with ACC engaged, the
system may increase or decrease the vehicle
speed for stability, with no vehicle ahead detected.
Once the vehicle is out of the curve, the system will
resume your original set speed. This is a part of
normal ACC system functionality.
NOTE:On tight turns ACC performance may be limited.
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STARTING AND OPERATING157
As the system detects driver inattentiveness as
previously described Ú page 152, the system
status indicator lights will change from green, to
yellow, to red. The following indicators will change
in color as warnings to the driver escalate:
Active Driving Assist Indicator (steering wheel
icon in the instrument cluster display or Head
Up Display [if equipped])
Glow effect of the instrument cluster display
For Hands-Free ADA only, light strips in the
driver and front passenger’s door panels (red
and green only)
For Base ADA, if driver attention is not returned,
the system will deactivate.
For Hands-Free ADA, if driver attention is not
returned, the system will perform a Stop-In-Lane
maneuver. Once the vehicle is at a standstill, the
vehicle will be shifted to PARK and the Electric Park
Brake (EPB) will be applied. Then, the vehicle will
attempt to place an emergency call through the
Assist and SOS system. If too many Stop-In-Lane
maneuvers are initiated, or if one is completed, the
system will be unavailable until the ignition is
cycled OFF, then back to ON.
Active Driving Assist Indicators Are Off
ADA is not turned on/enabled by the driver. Active Driving Assist Indicators Are White
ADA is turned on/enabled by the driver, but the
system is not actively steering and providing
speed control for the vehicle.
Active Driving Assist Indicators Are Green
System is actively steering and providing speed
control for the vehicle and the system detects
driver is attentive.
Active Driving Assist Indicators Are Yellow
Driver inattentiveness has been detected,
warning the driver to place hands on the
steering wheel, or look back toward the road (if
equipped with the Hands-Free system).
Active Driving Assist Indicators Are Red
Driver inattentiveness is still being detected, or
driver take-over is being requested, warning the
driver to place hands on the steering wheel, or if
equipped with the Hands-Free system, take
control of the vehicle.
NOTE:For both Base ADA and Hands-Free ADA, the driver
MUST replace hands on the steering wheel and
take control of the vehicle when the system is
deactivated.
Active Driving Assist Cancelled Message

SYSTEM STATUS
Along with changes in the system’s indicator lights
(green, yellow, and red), the system can also issue
several accompanying warnings intended to
provide the driver with enough time to react, avoid
or mitigate a potential collision.
Base Active Driving Assist System
Two haptic brake jerk warnings will be issued
(red warning light is being issued).
A steering wheel vibration warning (if enabled)
will occur if the vehicle crosses a lane marker,
for example, when driving on a tight curve. The
steering wheel vibration feature can be turned
on or off within the Uconnect system
Ú
page 204.
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STARTING AND OPERATING159
If the suspension alignment is not correct, if the
vehicle is modified (e.g. lifting or lowering the
suspension, installing different sized wheels or
tires) or if there has been damage due to road
hazards
Driving near highway toll booths
NOTE:If damage to the windshield occurs, have the wind -
shield replaced by an authorized dealer as soon as
possible.
PARKSENSE FRONT/REAR PARK ASSIST
SYSTEM — IF EQUIPPED
The ParkSense Park Assist system provides visual
and audible indications of the distance between
the rear, and if equipped, the front fascia/bumper
and a detected obstacle when backing up or
moving forward (e.g. during a parking maneuver).
The vehicle brakes may be automatically applied
and released when performing a reverse parking
maneuver if the system detects a possible collision
with an obstacle.
NOTE:
The driver can disable the automatic braking
function by turning ParkSense off via the
ParkSense switch. The driver can also override
automatic braking by changing the gear or by
pressing the gas pedal over 90% of its capacity
during the braking event.
Automatic brakes are not available if the vehicle
is in 4WD Low.
Automatic brakes will not be available if there is
a faulted condition detected with the ParkSense
Park Assist system or the Braking System
Module.
The automatic braking function may only be
applied if the vehicle deceleration is not enough
to avoid colliding with a detected obstacle.
The automatic braking function may not be
applied fast enough for obstacles that move
toward the rear of the vehicle from the left and/
or right sides.
The automatic braking function can be
enabled/disabled from the Customer Program -
mable Features section of the Uconnect system.
ParkSense will retain its last known configura -
tion state for the automatic braking function
through ignition cycles.
The automatic braking function is intended to
assist the driver in avoiding possible collisions with
detected obstacles when backing up in REVERSE
gear.
NOTE:
The system is designed to assist the driver and
not to substitute the driver.
The driver must stay in full control of the
vehicle's acceleration and braking and is
responsible for the vehicle's movements.
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160STARTING AND OPERATING
For limitations of this system and
recommendations, see Ú page 166.
ParkSense will retain the last system state
(enabled or disabled) from the last ignition cycle
when the ignition is changed to the ON/RUN
position.
ParkSense can be active only when the gear
selector is in REVERSE or DRIVE. If ParkSense is
enabled at one of these gear selector positions,
the system will remain active until the vehicle
speed is increased to approximately 7 mph
(11 km/h) or above. The system will become active
again if the vehicle speed is decreased to less than
approximately 6 mph (9 km/h). A display warning
will appear in the instrument cluster display if the
vehicle is in REVERSE and the speed exceeds
7 mph (11 km/h).
PARKSENSE SENSORS
The four ParkSense sensors located in the rear
fascia/bumper, and the six ParkSense sensors
located in the front fascia/bumper, monitor the
area in front and behind the vehicle that is within
the sensors’ field of view. The front sensors detect
obstacles from approximately 12 inches (30 cm)
up to 47 inches (120 cm) from the front fascia/
bumper. The rear sensors can detect obstacles
from approximately 12 inches (30 cm) up to
79 inches (200 cm) from the rear fascia/bumper.
These distances depend on the location, type and
orientation of the obstacle in the horizontal
direction.
NOTE:If the vehicle is equipped with ParkSense Active
Park Assist, there will be six ParkSense sensors
located in the rear fascia/bumper.
PARKSENSE DISPLAY
The warning display will turn on indicating the
system status when the vehicle is in REVERSE or
when the vehicle is in DRIVE and an obstacle has
been detected.
The system will indicate a detected obstacle by
showing a single arc in the left and/or right front or
rear regions based on the object’s distance and
location relative to the vehicle.
If an object is detected in the left and/or right rear
region, the display will show a single arc in the left
and/or right rear region and the system will
produce a tone. As the vehicle moves closer to the
object, the display will show the single arc moving
closer to the vehicle and the tone will change from
a single 1/2 second tone to slow, to fast, to
continuous.

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STARTING AND OPERATING163
Front Park Assist Audible Alerts
ParkSense will turn off the Front Park Assist
audible alert (chime) after approximately three
seconds when an obstacle has been detected, and
the vehicle is stationary.
Adjustable Chime Volume Settings
Front and rear chime volume settings can be
selected from the Uconnect system Ú page 204.
The chime volume settings include low, medium,
and high.
ParkSense will retain its last known configuration
state through ignition cycles.
PARKSENSE WARNING DISPLAY
The ParkSense Warning screen is located within
the instrument cluster display Ú page 98. It
provides visual warnings to indicate the distance
between the rear fascia/bumper and/or front
fascia/bumper and the detected obstacle.
ENABLING AND DISABLING PARKSENSE
ParkSense can be enabled and disabled
with the ParkSense switch located on the
switch panel above the Uconnect display.
When the ParkSense switch is pushed to enable
the system, the instrument cluster will display the
system state. When the ParkSense switch is pushed to disable
the system, the instrument cluster will display the
“PARKSENSE OFF” message for approximately two
seconds. When the gear selector is moved to
REVERSE and the system is disabled, the
instrument cluster display will display the
“PARKSENSE OFF” message for as long as the
vehicle is in REVERSE.
NOTE:When ParkSense is disabled and the gear selector
is moved to the DRIVE position, no warning
message will be displayed.
The ParkSense switch LED will be on when
ParkSense is disabled or requires service. The
ParkSense switch LED will be off when the system
is enabled. If the ParkSense switch is pushed, and
the system requires service, the ParkSense switch
LED will blink momentarily, and then the LED will
be on.
SERVICE THE PARKSENSE PARK ASSIST
S
YSTEM
During vehicle start-up, when the ParkSense
System has detected a faulted condition, the
instrument cluster will actuate a single chime,
once per ignition cycle, and it will display a pop-up.
The pop-up will include up to two faults. Possible
fault messages are "PARKSENSE UNAVAILABLE
WIPE REAR SENSORS", "PARKSENSE
UNAVAILABLE WIPE FRONT SENSORS", or "PARKSENSE UNAVAILABLE SERVICE REQUIRED.”
The pop-up message will display for five seconds.

When the gear selector is moved to REVERSE and
the system has detected a faulted condition, the
instrument cluster display will display a
"PARKSENSE UNAVAILABLE WIPE REAR SENSORS",
"PARKSENSE UNAVAILABLE WIPE FRONT SENSORS"
or "PARKSENSE UNAVAILABLE SERVICE REQUIRED"
pop-up message for five seconds. After five seconds,
a vehicle graphic will be displayed with
"UNAVAILABLE" at either the front or rear sensor
location depending on where the fault is detected.
The system will continue to provide arc alerts for the
side that is functioning properly. These arc alerts will
interrupt the "PARKSENSE UNAVAILABLE WIPE REAR
SENSORS", "PARKSENSE UNAVAILABLE WIPE
FRONT SENSORS", or "PARKSENSE UNAVAILABLE
SERVICE REQUIRED" messages if an object is
detected within the five second pop-up duration. The
vehicle graphic will remain displayed for as long as
the vehicle is in REVERSE.

If "PARKSENSE UNAVAILABLE WIPE REAR
SENSORS" or "PARKSENSE UNAVAILABLE WIPE
FRONT SENSORS" appears in the instrument
cluster display make sure the outer surface and
the underside of the rear fascia/bumper and/or
front fascia/bumper is clean and clear of snow,
ice, mud, dirt or other obstruction and then cycle
the ignition. If the message continues to appear
see an authorized dealer.
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164STARTING AND OPERATING
If the "PARKSENSE UNAVAILABLE SERVICE
REQUIRED" message appears in the instrument
cluster display, see an authorized dealer.
CLEANING THE PARKSENSE SYSTEM
Clean the ParkSense sensors with water, car wash
soap and a soft cloth. Do not use rough or hard
cloths. Do not scratch or poke the sensors.
PARKSENSE SYSTEM USAGE
P
RECAUTIONS
NOTE:
Ensure that the front and rear fascia/bumper
are free of snow, ice, mud, dirt and debris to
keep the ParkSense system operating properly.
Jackhammers, large trucks, and other vibra -
tions could affect the performance of
ParkSense.
When you turn ParkSense off, the instrument
cluster will display “PARKSENSE OFF.” Further -
more, once you turn ParkSense off, it remains
off until you turn it on again, even if you cycle the
ignition.
When you move the gear selector to the
REVERSE position and ParkSense is turned off,
the instrument cluster will display “PARKSENSE
OFF” for as long as the vehicle is in REVERSE.
ParkSense, when on, will reduce the volume of
the radio when it is sounding a tone.
Clean the ParkSense sensors regularly, taking
care not to scratch or damage them. The
sensors must not be covered with ice, snow,
slush, mud, dirt or debris. Failure to do so can
result in the system not working properly. The
ParkSense system might not detect an obstacle
behind or in front of the fascia/bumper, or it
could provide a false indication that an obstacle
is behind or in front of the fascia/bumper.
Use the ParkSense switch to turn the ParkSense
system off if objects such as bicycle carriers,
trailer hitches, etc., are placed within 12 inches
(30 cm) of the rear fascia/bumper. Failure to do
so can result in the system misinterpreting a
close object as a sensor problem, causing the
“PARKSENSE UNAVAILABLE SERVICE
REQUIRED” message to be displayed in the
instrument cluster.
ParkSense should be disabled when the liftgate
is in the open position. An opened liftgate could
provide a false indication that an obstacle is
behind the vehicle.
WARNING!
Drivers must be careful when backing up even
when using ParkSense. Always check carefully
behind your vehicle, look behind you, and be
sure to check for pedestrians, animals, other
vehicles, obstructions, and blind spots before
backing up. You are responsible for safety and
must continue to pay attention to your
surroundings. Failure to do so can result in
serious injury or death.
Before using ParkSense, it is strongly recom -
mended that the ball mount and hitch ball
assembly be disconnected from the vehicle
when the vehicle is not used for towing.
Failure to do so can result in injury or damage
to vehicles or obstacles because the hitch ball
will be much closer to the obstacle than the
rear fascia when the vehicle sounds the
continuous tone. Also, the sensors could
detect the ball mount and hitch ball assembly,
depending on its size and shape, giving a false
indication that an obstacle is behind the
vehicle.

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