sensor JEEP GRAND CHEROKEE LIMITED 2019 Owner's Manual

above. When in REVERSE and above the system’s operat-
ing speed, a warning will appear within the instrument
cluster display indicating the vehicle speed is too fast. The
system will become active again if the vehicle speed is
decreased to speeds less than approximately 6 mph
(9 km/h).
ParkSense Sensors
The four ParkSense sensors, located in the rear fascia/
bumper, monitor the area behind the vehicle that is within
the sensors’ field of view. The sensors can detect obstacles
from approximately 12 inches (30 cm) up to 79 inches (200
cm) from the rear fascia/bumper in the horizontal direc-
tion, depending on the location, type and orientation of the
obstacle.
ParkSense Display
The ParkSense display is always shown in the instrument
cluster display as long as the vehicle is in REVERSE.The system will indicate a detected obstacle by showing a
single arc in the left and/or right rear regions based on the
obstacle’s distance and location relative to the vehicle.

Service The ParkSense Rear Park Assist System
During vehicle start up, when the ParkSense Rear Park
Assist System has detected a faulted condition, the instru-
ment cluster will actuate a single chime, once per ignition
cycle, and it will display the “PARKSENSE UNAVAIL-
ABLE WIPE REAR SENSORS” or the “PARKSENSE UN-
AVAILABLE SERVICE REQUIRED” message. Refer to “In-
strument Cluster Display”. When the gear selector is
moved to REVERSE and the system has detected a faulted
condition, the instrument cluster display will display the
PARKSENSE UNAVAILABLE WIPE REAR SENSORSor
PARKSENSE UNAVAILABLE SERVICE REQUIRED mes-
sage for as long as the vehicle is in REVERSE. Under this
condition, ParkSense will not operate.
If “PARKSENSE UNAVAILABLE WIPE REAR SENSORS”
appears in the instrument cluster display make sure the
outer surface and the underside of the rear fascia/bumper
is clean and clear of snow, ice, mud, dirt or other obstruc-
tion and then cycle the ignition. If the message continues to
appear, see an authorized dealer.
If “PARKSENSE UNAVAILABLE SERVICE REQUIRED”
appears in the instrument cluster display, see an autho-
rized 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. Otherwise, you could damage the
sensors.
ParkSense System Usage Precautions
NOTE:
• Ensure that the rear bumper is free of snow, ice, mud,
dirt and debris to keep the ParkSense system operating
properly.
• Jackhammers, large trucks, and other vibrations could
affect the performance of ParkSense.
• When you turn ParkSense off, the instrument cluster
will display “PARKSENSE OFF.” Furthermore, 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 display will display “PARKSENSE OFF” mes-
sage 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.
320 STARTING AND OPERATING

•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 the fascia/bumper, or it could provide a
false indication that an obstacle is behind 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) from 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 display.
• ParkSense should be disabled when the liftgate is in the
open position and the vehicle is in REVERSE. An open
liftgate could provide a false indication that an obstacle
is behind the vehicle.

CAUTION!
•ParkSense is only a parking aid and it is unable to
recognize every obstacle, including small obstacles.
Parking curbs might be temporarily detected or not
detected at all. Obstacles located above or below the
sensors will not be detected when they are in close
proximity.
• The vehicle must be driven slowly when using
ParkSense in order to be able to stop in time when an
obstacle is detected. It is recommended that the
driver looks over his/her shoulder when using
ParkSense.
PARKSENSE FRONT AND REAR PARK ASSIST —
IF EQUIPPED
The ParkSense Park Assist system provides visual and
audible indications of the distance between the rear and/or
front fascia and a detected obstacle when backing up or
moving forward, e.g. during a parking maneuver. If your
vehicle is equipped with an automatic transmission, the
vehicle brakes may be automatically applied and released
when performing a reverse parking maneuver if the sys-
tem detects a possible collision with an obstacle. NOTE:
•
The driver can override the automatic braking function
by pressing the gas pedal, turning ParkSense off via
ParkSense switch, or changing the gear while the auto-
matic brakes are being applied.
• Automatic brakes are not available if the vehicle is in
4LO.
• 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 Programmable Features
section of the Uconnect System.
• ParkSense will retain its last known configuration state
for the automatic braking function through ignition
cycles.
322 STARTING AND OPERATING

The automatic braking function is intended to assist the
driver in avoiding possible collisions with detected ob-
stacles when backing up in REVERSE gear.
NOTE:
•The driver is always responsible for controlling the
vehicle.
• The system is provided 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.
Refer to “ParkSense System Usage Precautions” for limita-
tions of this system and recommendations.
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 speeds less than approxi-
mately 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 (or six, if equipped with Active
Park Assist), located in the rear fascia/bumper, monitor the
area behind the vehicle that is within the sensors’ field of
view. The sensors can detect obstacles from approximately
12 inches (30 cm) up to 79 inches (200 cm) from the rear
fascia/bumper in the horizontal direction, depending on
the location, type and orientation of the obstacle.
The six ParkSense sensors, located in the front fascia/
bumper, monitor the area in front of the vehicle that is
within the sensors’ field of view. The sensors can detect
obstacles from approximately 12 inches (30 cm) up to
47 inches (120 cm) from the front fascia/bumper in the
horizontal direction, depending on the location, type and
orientation of the obstacle.
6
STARTING AND OPERATING 323

The ParkSense Warning screen is located within the instru-
ment cluster display. It provides visual warnings to indi-
cate the distance between the rear fascia/bumper and/or
front fascia/bumper and the detected obstacle. Refer to
“Instrument Cluster Display” in “Getting To Know Your
Instrument Panel” for further information.
Enabling And Disabling ParkSense
ParkSense can be enabled and disabled with the ParkSense
switch.When the ParkSense switch is pushed to disable
the system, the instrument cluster will display
the “PARKSENSE OFF” message for approxi-
mately five seconds. When the gear selector is
moved to REVERSE and the system is disabled, the instru-
ment cluster display will display the “PARKSENSE OFF”
message for as long as the vehicle is in REVERSE.
Refer to “Instrument Cluster Display” in “Getting To Know
Your Instrument Panel” for further information.
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 System
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 the
PARKSENSE UNAVAILABLE WIPE REAR
SENSORS, PARKSENSE UNAVAILABLE WIPE FRONT
SENSORS,orthePARKSENSE UNAVAILABLE SERVICE
REQUIRED message 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 SEN-
SORS, PARKSENSE UNAVAILABLE WIPE FRONT SEN-
SORS orPARKSENSE UNAVAILABLE SERVICE RE-
QUIRED pop up message for five seconds. After five
seconds, a vehicle graphic will be displayed with UN-
AVAILABLE 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 function-
ing properly. These arc alerts will interrupt the
PARKSENSE UNAVAILABLE WIPE REAR SENSORS,
PARKSENSE UNAVAILABLE WIPE FRONT SENSORS,
6
STARTING AND OPERATING 329

orPARKSENSE UNAVAILABLE SERVICE REQUIRED
messages if an object is detected within the five second
pop-up duration. The vehicle graphic will remain dis-
played for as long as the vehicle is in REVERSE.
Refer to “Instrument Cluster Display” in “Getting To Know
Your Instrument Panel” for further information.
If PARKSENSE UNAVAILABLE WIPE REAR SENSORS
or PARKSENSE UNAVAILABLE WIPE FRONT SEN-
SORS 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 your
authorized dealer.
If the PARKSENSE UNAVAILABLE SERVICE RE-
QUIRED message appears in the instrument cluster dis-
play, see your 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. Otherwise, you could damage the
sensors.
ParkSense System Usage Precautions
NOTE:
• Ensure that the front and rear bumper are free of snow,
ice, mud, dirt and debris to keep the ParkSense system
operating properly.
• Jackhammers, large trucks, and other vibrations could
affect the performance of ParkSense.
• When you turn ParkSense off, the instrument cluster
will display “PARKSENSE OFF.” Furthermore, 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.
330 STARTING AND OPERATING

•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) from 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.

CAUTION!
•ParkSense is only a parking aid and it is unable to
recognize every obstacle, including small obstacles.
Parking curbs might be temporarily detected or not
detected at all. Obstacles located above or below the
sensors will not be detected when they are in close
proximity.
• The vehicle must be driven slowly when using
ParkSense in order to be able to stop in time when an
obstacle is detected. It is recommended that the
driver looks over his/her shoulder when using
ParkSense.
PARKSENSE ACTIVE PARK ASSIST SYSTEM — IF
EQUIPPED
The ParkSense Active Park Assist system is intended to
assist the driver during parallel and perpendicular parking
maneuvers by identifying a proper parking space, provid-
ing audible/visual instructions, and controlling the steer-
ing wheel. The ParkSense Active Park Assist system is
defined as “semi-automatic” since the driver maintains control of the accelerator, gear selector and brakes. De-
pending on the driver’s parking maneuver selection, the
ParkSense Active Park Assist system is capable of maneu-
vering a vehicle into a parallel or a perpendicular parking
space on either side (i.e., driver side or passenger side).
NOTE:
•
The driver is always responsible for controlling the
vehicle, responsible for any surrounding objects, and
must intervene as required.
• The system is provided to assist the driver and not to
substitute the driver.
• During a semi-automatic maneuver, if the driver touches
the steering wheel after being instructed to remove their
hands from the steering wheel, the system will cancel,
and the driver will be required to manually complete the
parking maneuver.
• The system may not work in all conditions (e.g. envi-
ronmental conditions such as heavy rain, snow, etc., or if
searching for a parking space that has surfaces that will
absorb the ultrasonic sensor waves).
332 STARTING AND OPERATING

WARNING!
•Drivers must be careful when performing parallel or
perpendicular parking maneuvers even when using
the ParkSense Active Park Assist system. Always
check carefully behind and in front of your vehicle,
look behind and in front of you, and be sure to check
for pedestrians, animals, other vehicles, obstructions,
and blind spots before backing up and moving
forward. You are responsible for safety and must
continue to pay attention to your surroundings. Fail-
ure to do so can result in serious injury or death.
• Before using the ParkSense Active Park Assist sys-
tem, it is strongly recommended that the ball mount
and hitch ball assembly is 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 loudspeaker 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.
CAUTION!
•The ParkSense Active Park Assist system is only a
parking aid and it is unable to recognize every
obstacle, including small obstacles. Parking curbs
might be temporarily detected or not detected at all.
Obstacles located above or below the sensors will
not be detected when they are in close proximity.
• The vehicle must be driven slowly when using the
ParkSense Active Park Assist system in order to be
able to stop in time when an obstacle is detected. It is
recommended that the driver looks over his/her
shoulder when using the ParkSense Active Park
Assist system.
LANESENSE — IF EQUIPPED
LaneSense Operation
The LaneSense system is operational at speeds above
37 mph (60 km/h) and below 112 mph (180 km/h). The
LaneSense system uses a forward looking camera to detect
lane markings and measure vehicle position within the
lane boundaries.
352 STARTING AND OPERATING