FORD 2012 Explorer v.2 - Manual (Page 297)

If the front end of the vehicle is hit or damaged, the radar sensing zone
may be altered causing missed or false collision warnings. Check with
your authorized dealer to have your collision warning radar checked for
proper coverage and operation.
WARNING: The collision warning system’s brake support can
only help reduce the speed at which a collision occurs if the
driver applies the vehicle’s brakes. The brake pedal must be pressed
just like any typical braking situation.
Blocked sensor
If a message regarding a blocked
sensor is displayed, the radar signals
from the sensor, located behind a
fascia cover near the driver side of
the lower grille, have been
obstructed. When the radar signals
are obstructed, a vehicle ahead
cannot be detected and the collision
warning system will not function.
The following table lists possible
causes and actions for this message being displayed.
Cause Action
The surface of the radar in
the grille is dirty or
obstructed in some way Clean the grille surface in front of the
radar or remove the object causing the
obstruction
The surface of the radar in
the grille is clean but the
message remains in the
display Wait a short time. It may take several
minutes for the radar to detect that it is no
longer obstructed
Heavy rain, spray, snow, or
fog is interfering with the
radar signals The collision warning system is temporarily
disabled. Collision warning should
automatically reactivate a short time after
the weather conditions improve.
Swirling water, or snow or ice
on the surface of the road
may interfere with the radar
signals The collision warning system is temporarily
disabled. Collision warning should
automatically reactivate a short time after
the weather conditions improve.
Driving
297
2012 Explorer (exp)
Owners Guide, 2nd Printing
USA (fus)