General Procedure

NOTE: The object used in this system check can be fabricated from 76.2 mm (3 in) OD 1, 219.2 mm (48 in) in length pipe (from a hardware or plumbing supply).

NOTE: The following system check should be carried out with the vehicle on a level surface. The specified object locations are approximate, not absolute.

NOTE: The parking aid system defaults to on when the ignition key is cycled from OFF to ON.

NOTE: The scan tool may be used to monitor distance PIDs . The distance PIDs read between 0 and 255 cm (0 and 8 ft) on a correctly functioning system.

Turn the ignition to the ON position, engine off.

Fig 1: Identifying Minimum Detectable Object Locations
Courtesy of FORD MOTOR CO.
Set the parking brake on.
Place the gear shift in DRIVE (D).
Verify that the parking aid system detects the specified object when placed within the 3 specified locations (P1, P2, P3) and record the distances.
Confirm that the recorded distances are within the specification ranges.
If the active park assist system does not detect the object, REFER to Symptom Chart: Active Park Assist .