FORD 2013 Explorer v.2 - Manual (Page 239)

Automatic Steering into Parking Space
Note: If vehicle speed exceeds 7 mph (12 km/h), the system turns off
and you need to take full control of the vehicle.
Note: If a maneuver is interrupted before completion, the system turns
off. The steering wheel position will not indicate the actual position of
the steering and you have to full take control of the vehicle.
With hands off the wheel (and nothing obstructing its movement) and
the transmission in R (Reverse), the vehicle steers itself as instructions
to safely move the vehicle back and forward in the space are displayed in
the touch screen. While reversing, the touch screen displays a message
instructing the driver to check their surroundings (for safety reasons)
and to back-up slowly, accompanied by a corresponding graphic.
When you think the vehicle has enough space in front and behind it, or
you hear a solid tone from the parking aid, bring the vehicle to a
complete stop.
When automatic steering is finished, the touch screen displays a message
indicating that the active park assist process is done. The driver is
responsible for checking the parking job and making any necessary
corrections before putting the transmission in P (Park).
Parking Aids 239
2013 Explorer (exp)
Owners Guide gf, 2nd Printing
USA (fus)