Mercury 2008 Milan Owner's Manual page 119

Fold the seatback(s) down.
Before returning the seatback to its original position, make sure
that cargo or any objects are not trapped behind the seatback.
After returning the seatback to its original position, pull on the
seatback to ensure that it has fully latched. An unlatched seat may
become dangerous in the event of a sudden stop or collision.
Make sure that the safety belt for the rear center passenger is properly
routed over the rear seatback.
2008 Milan (mln)
Owners Guide (post-2002-fmt)
USA (fus)
Seating and Safety Restraints
119