Dodge DURANGO 2021 Owner's Manual page 140

138 STARTING AND OPERATING
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/FCW 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
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.
"Clean Front Windshield" Warning
The "ACC/FCW 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/FCW 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/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 rearview
mirror. They may require cleaning or removal of
an obstruction.