Ford 2014 Econoline Owner's Manual page 136

Using the Rear Sensing System
The rear sensors are only active when the transmission is in R (Reverse).
As the vehicle moves closer to the obstacle, the rate of the audible
warning increases. When the obstacle is fewer than 10 inches (25
centimeters) away, the warning sounds continuously. If a stationary or
receding object is detected farther than 10 inches (25 centimeters) from
the side of the vehicle, the tone sounds for only three seconds. Once the
system detects an object approaching, the warning sounds again.
A
The system detects certain objects while the transmission is in R
(Reverse):
• and moving toward a stationary object at a speed of 3 mph (5 km/h)
or less.
• but not moving, and a moving object is approaching the rear of the
vehicle at a speed of 3 mph (5 km/h) or less.
• and moving at a speed of less than 3 mph (5 km/h) and a moving
object is approaching the rear of the vehicle at a speed of less than
3 mph (5 km/h).
2014 Econoline (eco)
Owners Guide gf, 1st Printing, November 2012
USA (fus)
Parking Aids
A. Coverage area of up to 6 feet
(2 meters) from the rear bumper
(with a decreased coverage area at
the outer corners of the bumper).
135