Ford 2011 Explorer Owner's Manual page 189

Seating and Safety Restraints
How to disengage the automatic locking mode
WARNING: After any vehicle collision, the safety belt system at
all passenger seating positions must be checked by an authorized
dealer to verify that the "automatic locking retractor" feature for child
seats is still functioning properly. In addition, all safety belts should be
checked for proper function.
WARNING: BELT AND RETRACTOR ASSEMBLY MUST BE
REPLACED if the safety belt assembly "automatic locking
retractor" feature or any other safety belt function is not operating
properly when checked by an authorized dealer. Failure to replace the
belt and retractor assembly could increase the risk of injury in
collisions.
Disconnect the combination lap/shoulder belt and allow it to retract
completely to disengage the automatic locking mode and activate the
vehicle sensitive (emergency) locking mode.
188
2011 Explorer (exp)
Owners Guide, 1st Printing
USA (fus)