Ford F-150 2018 Owner's Manual page 269

Note: We recommend that you turn the
system off if you install a snow plow or
similar object in such a way that it may
block the radar sensor. Your vehicle
remembers the selected setting across key
cycles.
Blocked Sensors
E249424
The surface of the radar in the grille is dirty
or obstructed in some way.
The surface of the radar in the grille is clean
but the message remains in the display.
Heavy rain, spray, snow, or fog is interfering
with the radar signals.
Swirling water, or snow or ice on the surface
of the road may interfere with the radar
signals.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 201709, Second Printing
Driving Aids
Cause
If a message regarding a blocked sensor
or camera appears in the information
display, the radar signals or camera images
are obstructed. The radar sensor is located
behind a fascia cover near the driver side
of the lower grille. With an obstructed
radar, the Pre-Collision Assist system does
not function and cannot detect a vehicle
ahead. With the front camera obstructed,
the Pre-Collision Assist system does not
respond to pedestrians or stationary
vehicles and the system performance on
moving vehicles reduces. The following
table lists possible causes and actions for
when this message displays.
Clean the grille surface in front of the radar
or remove the object causing the obstruc-
Wait a short time. It may take several
minutes for the radar to detect that there
is no obstruction.
The Pre-Collision Assist system is tempor-
arily disabled. Pre-Collision Assist should
automatically reactivate a short time after
the weather conditions improve.
The Pre-Collision Assist system is tempor-
arily disabled. Pre-Collision Assist should
automatically reactivate a short time after
the weather conditions improve.
266
Action
tion.