2023 JEEP GRAND CHEROKEE sensor

142STARTING AND OPERATING
(Continued)
CRUISE CONTROL SYSTEMS
Your vehicle is equipped with the Adaptive Cruise
Control (ACC) system which will adjust the vehicle
speed up to the preset speed to maintain a
distance with the vehicle ahead.
NOTE:In vehicles NOT equipped with the Active Driving
Assist (ADA) system:
Fixed Speed Cruise Control can be used when
ACC is not enabled, and functions as normal
cruise control.
Fixed Speed Cruise Control will not detect vehi -
cles directly ahead of you. Always be aware of
the feature selected.
Only one Cruise Control feature can operate at a
time. For example, if Fixed Speed Cruise Control
is enabled, Adaptive Cruise Control will be
unavailable, and vice versa.
ADAPTIVE CRUISE CONTROL (ACC)
Adaptive Cruise Control (ACC) increases the driving
convenience provided by Cruise Control while
traveling on highways and major roadways.
However, it is not a safety system and not designed
to prevent collisions. ACC will allow you to keep Cruise Control engaged
in light to moderate traffic conditions without the
constant need to reset your Cruise Control. ACC
utilizes a radar sensor and a forward facing
camera designed to detect a vehicle directly ahead
of you.
NOTE:
If the ACC sensor detects a vehicle ahead, ACC
will apply limited braking or acceleration (not to
exceed the original set speed) automatically to
maintain a preset following distance, while
matching the speed of the vehicle ahead.
Any chassis/suspension or tire size modifica
-
tions to the vehicle will affect the performance
of the Adaptive Cruise Control and Forward Colli -
sion Warning system.
In vehicles NOT equipped with the Active Driving
Assist system, Fixed Speed Cruise Control (ACC
not enabled) will not detect vehicles directly
ahead of you. Always be aware of the feature
selected Ú page 408.
WARNING!
Adaptive Cruise Control (ACC) is a conve -
nience system. It is not a substitute for active
driver involvement. It is always the driver’s
responsibility to be attentive of road, traffic,
and weather conditions, vehicle speed,
distance to the vehicle ahead and, most
importantly, brake operation to ensure safe
operation of the vehicle under all road condi -
tions. Your complete attention is always
required while driving to maintain safe control
of your vehicle. Failure to follow these warn -
ings can result in a collision and death or
serious personal injury.
The ACC system:
Does not react to pedestrians, oncoming
vehicles, and stationary objects (e.g., a
stationary vehicle in a traffic jam or a
disabled vehicle).

Cannot take street, traffic, and weather
conditions into account, and may be limited
upon adverse sight distance conditions.

Does not always fully recognize complex
driving conditions, which can result in
wrong or missing distance warnings.

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STARTING AND OPERATING147
To decrease the distance setting, push the
Distance Decrease button and release. Each time
the button is pushed, the distance setting
decreases by one bar (shorter).
If there is no vehicle ahead, the vehicle will
maintain the set speed. If a slower moving vehicle
is detected in the same lane, the instrument
cluster display will show the ACC Set With Target
Detected Indicator Light, and the system will adjust
the vehicle speed automatically to maintain the
distance setting, regardless of the set speed.
The vehicle will then maintain the set distance
until:
The vehicle ahead accelerates to a speed above
the set speed.
The vehicle ahead moves out of your lane or
view of the sensor.
The distance setting is changed.
The system disengages Ú page 144.
The maximum braking applied by ACC is limited;
however, the driver can always apply the brakes
manually, if necessary.
NOTE:The brake lights will illuminate whenever the ACC
system applies the brakes. A Proximity Warning will alert the driver if ACC
predicts that its maximum braking level is not
sufficient to maintain the set distance. If this
occurs, a visual alert “BRAKE!” will flash in the
instrument cluster display and a chime will sound
while ACC continues to apply its maximum braking
capacity.
NOTE:The “BRAKE!” screen in the instrument cluster
display is a warning for the driver to take action
and does not necessarily mean that the Forward
Collision Warning system is applying the brakes
autonomously.
Overtake Aid
When driving with Adaptive Cruise Control (ACC)
engaged and following a vehicle, the system will
provide an additional acceleration up to the ACC
set speed to assist in passing the vehicle. This
additional acceleration is triggered when the driver
utilizes the left turn signal and will only be active
when passing on the left hand side.
ACC Operation At Stop
If the ACC system brings your vehicle to a standstill
while following a vehicle ahead, your vehicle will
resume motion, without any driver interaction, if
the vehicle ahead starts moving within two
seconds of your vehicle coming to a standstill.If the vehicle in front does not start moving within
two seconds of your vehicle coming to a standstill,
the driver will either have to push the RES (resume)
button, or apply the accelerator pedal to reengage
the ACC to the existing set speed.
NOTE:
If your vehicle is at a standstill for longer than
two seconds, the system will hold brake pres
-
sure for up to 10 minutes. If no driver action is
taken after the 10 minutes, the Electric Park
Brake will be applied and the ACC system will
cancel.
While ACC is holding your vehicle at a standstill
(or the vehicle is traveling below 3 mph
(5 km/h), and the driver seat belt is unbuckled
or the driver door is opened, the Electric Park
Brake will be applied and the ACC system will
cancel.
WARNING!
When the ACC system is resumed, the driver
must ensure that there are no pedestrians,
vehicles or objects in the path of the vehicle.
Failure to follow these warnings can result in a
collision and death or serious personal injury.
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148STARTING AND OPERATING
Display Warnings And Maintenance
“WIPE FRONT RADAR SENSOR IN FRONT OF
VEHICLE” WARNING
The “ACC Unavailable Wipe Front Radar Sensor”
warning will display and a chime will sound when
conditions temporarily limit system performance.
This most often occurs at times of poor visibility,
such as in snow or heavy rain. The ACC system may
also become temporarily blinded due to
obstructions, such as mud, dirt or ice. In these
cases, the instrument cluster display will display
the above message and the system will deactivate.
This message can sometimes be displayed while
driving in highly reflective areas (i.e. ice and snow,
or tunnels with reflective tiles). The ACC system will
recover after the vehicle has left these areas.
Under rare conditions, when the radar is not
tracking any vehicles or objects in its path, this
warning may temporarily occur.
NOTE:If the “ACC Unavailable Wipe Front Radar Sensor”
warning is active, Fixed Speed Cruise Control is still
available.
If weather conditions are not a factor, the driver
should examine the sensor. It may require cleaning
or removal of an obstruction. The sensor is located
in the center of the vehicle behind the lower grille. To keep the ACC System operating properly, it is
important to note the following maintenance
items:
Always keep the sensor clean. Carefully wipe the
sensor lens with a soft cloth. Be cautious not to
damage the sensor lens.
Do not remove any screws from the sensor.
Doing so could cause an ACC system malfunc
-
tion or failure and require a sensor realignment.
If the sensor or front end of the vehicle is
damaged due to a collision, see your authorized
dealer for service.
Do not attach or install any accessories near the
sensor, including transparent material or after -
market grilles. Doing so could cause an ACC
system failure or malfunction.
When the condition that deactivated the system is
no longer present, the system will return to the
“Adaptive Cruise Control Off” state and will resume
function by simply reactivating it.
NOTE:
If the “ACC Unavailable Wipe Front Radar
Sensor” message occurs frequently (e.g. more
than once on every trip) without any snow, rain,
mud, or other obstruction, have the radar
sensor realigned at an authorized dealer.
Installing a snowplow, front-end protector, an
aftermarket grille or modifying the grille is not
recommended. Doing so may block the sensor
and inhibit ACC operation.
“CLEAN FRONT WINDSHIELD” WARNING
The “ACC Limited Functionality Clean Front
Windshield” warning will display, and a chime will
sound when conditions temporarily limit system
performance. This most often occurs at times of
poor visibility, such as in snow or heavy rain and
fog. The ACC system may also become temporarily
blinded due to obstructions, such as mud, dirt, or
ice on windshield and fog on the inside of glass. In
these cases, the instrument cluster display will
read “ACC Limited Functionality Clean Front
Windshield” and the system will have degraded
performance.
This message can sometimes be displayed while
driving in adverse weather conditions. The ACC
system will recover after the vehicle has left these
areas. Under rare conditions, when the camera is
not tracking any vehicles or objects in its path this
warning may temporarily occur.
If weather conditions are not a factor, the driver
should examine the windshield and the camera
located on the back side of the inside rearview
mirror. They may require cleaning or removal of an
obstruction.

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152STARTING AND OPERATING
(Continued)
When a newly detected speed limit is lower than
the current speed limit, the display will update
along with a down arrow.
NOTE:Up or down arrows will be displayed for up to five
seconds.

Traffic Signs Recognized

Supplemental Information
Supplemental information may be displayed, along
with a newly detected speed limit, indicating
special circumstances of which the driver should
be aware. Available supplemental information
includes:
School
Construction
Rain
Snow
Fog
NOTE:Supplemental information will not be displayed
when the vehicle is ONLY equipped with GPS.
Speed Limit Exceeded
When the vehicle’s speed exceeds the displayed
speed limit by 3 mph (5 km/h), the speed limit sign
on the instrument cluster display will show a red
outline to alert the driver.
ACTIVE DRIVING ASSIST SYSTEM —
IF EQUIPPED
OPERATION
The Active Driving Assist (ADA) system is combined
with the Adaptive Cruise Control (ACC) system, and
centers the vehicle in the driving lane while
traveling at speeds up to 90 mph (145 km/h).
For ACC system operating instructions and system
limitations, see Ú page 142.
NOTE:
The driver should always obey traffic laws and
speed limits. Never drive above applicable
speed limit restrictions.
1 — Current Speed Limit With Supplemental Infor
-
mation (School Zone)
2 — Next Speed Limit Detected
3 — No Passing Zone Detected
CAUTION!
Traffic Sign Assist is designed to assist the
driver and not to substitute the driver. It is the
driver’s responsibility to continue to monitor
the vehicle speed.
Functionality may be limited or the system
may not work if the sensor is obstructed.
The system may have limited operation or not
work at all in weather conditions such as
heavy rain, hail, and thick fog. Strong light
contrasts can influence the recognition capa -
bility of the sensor.
The area surrounding the sensor must not be
covered with stickers or any other object.
Do not tamper or perform any operations in
the area of the windshield glass directly
surrounding the sensor.
Clean foreign matters such as bird droppings,
insects, snow or ice on the windshield. For
glass cleaning recommendations, see
Ú page 395.
CAUTION!

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STARTING AND OPERATING153
The driver can override ADA at any time by
braking, accelerating, or steering the vehicle.
Just like ACC, ADA will maintain a set speed as long
as the set distance between your vehicle and the
vehicle in front is maintained. ADA will also keep
your vehicle centered between the lane lines, and
monitor for other vehicles in adjacent lanes by
utilizing the Blind Spot Monitoring sensors.
Two types of Active Driving Assist systems are
available:
Base ADA system
Hands-Free ADA system
Base Active Driving Assist System — If Equipped
The Base ADA system uses sensors within the
steering wheel to measure driver attentiveness,
and requires that the driver have their hands on
the steering wheel at all times.
The system will generally aim to keep the vehicle
centered in the lane, but when the driver turns the
steering wheel (e.g. to move farther away from a
large vehicle in an adjacent lane) the system will
reduce its control and enter "co-steering" mode.
While in co-steering mode, the system will provide
reduced assistance and allow the driver to control
the path of the vehicle. Once the driver stops
providing input to the steering wheel, the system
will require a few seconds to fully resume lane
centering assistance, especially during curves. Hands-Free Active Driving Assist System —
If Equipped
The Hands-Free ADA system uses sensors within
the steering wheel and a driver monitoring camera
located on top of the steering column to monitor
driver attentiveness. The Hands-Free ADA system
allows the driver to remove their hands from the
steering wheel when engaged, but requires that
the driver continue to pay attention to the road.
The Hands-Free ADA system will also change lanes
when a turn signal is activated if the adjacent lane
in the direction indicated is clear of another
vehicle, and lane markings are detected (noted by
a dashed line in the direction of the available lane
change). The system uses sensors, including Blind
Spot Monitoring (BSM) sensors, to determine if a
lane change is possible. If the assisted lane
change is in progress, a green arrow will appear. If
a lane change is requested but the direction
indicated is not possible, a yellow arrow will
appear. Once conditions are clear, the arrow will
turn green and the assisted lane change will begin.
Additionally, Hands-Free ADA will slow the vehicle
down when approaching and going through sharp
curves.

Assisted Lane Change (Green Left Arrow)

Extended Auto Resume
If equipped with Hands-Free ADA and the system
brings your vehicle to a stop while following the
vehicle ahead, your vehicle will automatically
resume driving without driver input when the path
in front of the vehicle is clear and the driver is
attentive. The path in front of the vehicle is
determined to be clear based on the forward facing
camera, front radars, and front ultrasonic sensors.WARNING!
The driver is always responsible for determining
if a lane change is safe. Failure to follow this
warning can result in a collision and death or
serious personal injury.
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158STARTING AND OPERATING
(Continued)
Hands-Free Active Driving Assist System
Two haptic brake jerk warnings will be issued
(red warning light is being issued).
A seat vibration warning will occur (red warning
light is being issued).
The driver can take control of the vehicle at
anytime to override the warnings by pressing the
gas or brake pedal, moving the steering wheel, and
being attentive to the road.
SYSTEM OPERATION/LIMITATIONS
The Base Active Driving Assist and Hands-Free
Active Driving Assist systems DO NOT:
Warn or prevent collisions with other vehicles
Steer your vehicle around stopped vehicles,
slower vehicles, construction zones or equip -
ment, pedestrians, or animals
Respond to traffic lights or stop signs
Merge onto highways or exit off ramps
Change lanes (exception: Hands-Free, only
when initiated by the driver)
React to cross traffic
NOTE:Adaptive Cruise Control (ACC) is a core component
of ADA. For ACC system limitations Ú page 142.
The Active Driving Assist system may have limited
or reduced functionality when one of the following
conditions occur:
The vehicle’s radar sensors and/or forward
facing camera is damaged, covered,
misaligned, or obstructed (e.g. by mud, ice,
snow, etc.)
WARNING!
Active Driving Assist is an SAE Level 2 Driver
Assist feature, requiring driver attention at all
times. To prevent serious injury or death:
Always remember that the Active Driving
Assist system is a convenience system that
cannot accurately detect all situations.
Complete attention is always required while
driving, even when using the Active Driving
Assist system.
Always remain alert and be ready to take
control of the vehicle in the event that the
Active Driving Assist system deactivates, or
otherwise lacks full functionality as described
further before and after this statement.
Always keep your hands on the steering wheel
when the Base Active Driving Assist system is
activated.
Always keep your eyes on the road when the
Hands-Free Active Driving Assist system is
activated.
Maintain a safe distance from other vehicles
and pay attention to traffic conditions.
Do not use a hand held device when either
Base, or Hands-Free Active Driving Assist
system is engaged.
Always pay attention to the road when the
Hands-Free Active Driving Assist system is
engaged. The Active Driving Assist system will
not steer to avoid safety hazards, construction
zones, objects, or road impediments. You
need to take control to steer and brake the
vehicle in such situations, and when merging
into traffic, exiting the highway, making a turn
for crossing traffic, or stopping for traffic
control devices.
Do not place any objects on the steering wheel
(e.g. steering wheel covers) which could inter -
fere with the hand detection sensors.
WARNING!

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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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