Jeep WRANGLER 2020 Owner's Manual page 253

NOTE:
If the "ACC/FCW Unavailable Wipe Front Radar
Sensor" warning is active Normal (Fixed Speed)
Cruise Control is still available. For additional
information refer to "Normal (Fixed Speed)
Cruise Control Mode" in this section.
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
malfunction or failure and require a sensor
realignment.
If the sensor or front end of the vehicle is

damaged due to a collision, see an autho-
rized dealer for service.
Do not attach or install any accessories near

the sensor, including transparent material or
aftermarket 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/FCW 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 autho-
rized dealer.
Installing a snow plow, front-end protector,

an aftermarket grille or modifying the grille is
not recommended. Doing so may block the
sensor and inhibit ACC/FCW operation.
STARTING AND OPERATING
"Clean Front Windshield" Warning
The "ACC/FCW Limited Functionality Clean Front
Windshield" warning will display and also a chime
will indicate 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 display "ACC/FCW Limited
Functionality Clean Front Windshield" and the
system will have degraded performance.
The "ACC/FCW Limited Functionality Clean
Front Windshield" message can sometimes be
displayed while driving in adverse weather
conditions. The ACC/FCW 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 rear view
mirror. They may require cleaning or removal of
an obstruction.
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