Ford F-150 2018 Owner's Manual page 248

Blocked Sensor
E183741
Possible Causes and Actions for This Message Displaying:
The surface of the radar is dirty or
obstructed.
The surface of the radar is clean but the
message remains in the display.
Heavy rain or snow is interfering with the
radar signals.
Water, snow or ice on the surface of the
road may interfere with the radar signals.
You are in a desert or remote area with no
other vehicles and no roadside objects.
Radar is out of alignment due to a front end
impact.
The windshield in front of the camera is
dirty or obstructed.
The windshield in front of the camera is
clean, but the message remains in the
display.
Due to the nature of radar technology, it is possible to get a blockage warning with no
actual block. This happens, for example, when driving in sparse rural or desert
environments. A false blocked condition either self clears, or clears after you restart your
vehicle.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 201705, First Printing
Cruise Control
Cause
(If Equipped)
Note: You cannot see the radar sensor. It
is behind a fascia panel.
A message displays if something obstructs
the radar signals from the sensor. The
sensor is in the lower grille. The system
cannot detect a vehicle ahead and does
not function when something blocks the
sensor.
Clean the grille surface in front of the radar
or remove the object causing the obstruc-
tion.
Wait a short time. It may take several
minutes for the radar to detect that it is free
from obstruction.
Do not use the system in these conditions
because it may not detect any vehicles
ahead.
Do not use the system in these conditions
because it may not detect any vehicles
ahead.
Wait a short time or switch to normal cruise
control.
Contact an authorized dealer to have the
radar checked for proper coverage and
operation.
Clean the outside of the windshield in front
of the camera.
Wait a short time. It may take several
minutes for the camera to detect that it is
free from obstruction.
245
Action