Ford F-150 2018 Owner's Manual page 252

Optimal system performance requires a
clear view of the road by the
windshield-mounted camera.
Optimal performance may not occur if:
• The camera is blocked.
• There is poor visibility or lighting
conditions.
• There are bad weather conditions.
System Not Available
The system may not turn on if there is:
• A blocked sensor.
• High brake temperature.
• A failure in the system or a related
system.
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.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 201709, Second Printing
Cruise Control
Cause
Blocked Sensor
E249424
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.
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Action