FORD 2015 F-150 - Manual (Page 234)

Blocked Sensors
E183741
If a blocked sensor message appears in the
information display, dirt, water, or an object
is blocking the sensor. The sensor is
located behind a cover near the driver side
of the lower grille. If anything blocks the
sensor, your vehicle cannot see through
the sensor, and the collision warning
system will not work. Possible causes for
the blocked sensor message and corrective
actions are listed below.
Action Cause
Clean the radar sensor cover or remove the
obstruction
The radar sensor cover in the grille is dirty
or obstructed
Wait a short time. The radar may take
several minutes to reset after you remove
the obstruction
The surface of the radar sensor cover is
clean but the message remains in the
display
The collision warning system is temporarily
disabled. Shortly after weather conditions
improve, the collision warning system
automatically reactivates
Heavy rain, spray, snow or fog in the air
interferes with the radar signals
The collision warning system is temporarily
disabled. Shortly after weather conditions
improve, the collision warning system
automatically reactivates
Swirling water, snow or ice on the road
surface interferes with the radar signals
System Limitations
WARNING
The collision warning system’s brake
support only reduces collision speed
if you first apply your brakes. You
must brake as you would in any typical
braking situation.
Due to the nature of radar technology,
there may be certain instances where
vehicles do not provide a collision warning.
These include:
• Stationary vehicles or vehicles moving
below 6 mph (10 km/h).
• Pedestrians or objects in the roadway.
• Oncoming vehicles in the same lane.
• Severe weather conditions (see
blocked sensor section).
• Debris build-up on the grille near the
headlamps (see blocked sensor
section).
• Small distance to vehicle ahead.
• Large steering wheel and pedal
movements (very active driving style).
231
F-150 (), enUSA, First Printing
Driving Aids