Jeep GRAND CHEROKEE 2022 Owner's Manual page 151

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.
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.
STARTING AND OPERATING
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.
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