Ford 2016 F-150 Owner's Manual page 229

In these cases the system may brake late
or unexpectedly. Stay alert and take action
when necessary.
If something hits the front end of your
vehicle or damage occurs, the
radar-sensing zone may change. This could
cause missed or false vehicle detections.
Contact an authorized dealer to have them
check for proper coverage and operation.
System Not Available
Conditions that can cause the system to
deactivate or prevent the system from
activating when requested include:
• A blocked sensor.
• High brake temperature.
• A failure in the system or a related
system.
Note: If you disable electronic stability
control, adaptive cruise control is not
available. See Using Stability Control
(page 205).
Blocked Sensor
WARNINGS
Do not use the system when towing
a trailer with aftermarked trailer
brake controls. Aftermarket trailer
brakes will not function properly when you
switch the system on because the brakes
are electronically controlled. Failing to do
so may result in loss of vehicle control,
which could result in serious injury.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 08/2015, First Printing
Cruise Control
226
(If Equipped)
WARNINGS
Do not use adaptive cruise control
while you have a snow plow blade
installed.
Do not use tire sizes other than those
recommended because this can
affect the normal operation of the
system. Failing to do so may result in a loss
of vehicle control, which could result in
serious injury.
E183741
A message displays if something obstructs
the radar signals from the sensor. The
sensor is behind a cover near the driver side
of the lower grille. The system cannot
detect a vehicle ahead and does not
function when something obstructs the
radar signals. The following table lists
possible causes and actions for this
message displaying.