Mercury 2009 Mountaineer Owner's Manual page 173

WARNING: 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.
3rd row power folding seat (if equipped)
Note: Be sure that head restraints are folded down before powering the
3rd row seat down.
The control buttons are located on
the driver-side rear quarter trim
panel (accessible from the liftgate
area).
Push the bottom portion of the
control button to lower the desired
seatback.
2009 Mountaineer (mnt)
Owners Guide, 2nd Printing
USA (fus)
Seating and Safety Restraints
173