Ford 2009 Expedition Owner's Manual page 188

Seating and Safety Restraints
Using the armrest (if equipped)
Push the release control to move
the armrest up or down.
Using the manual lumbar support (if equipped)
The lumbar support control is
located on the outboard side of the
seat.
Turn the lumbar support control
clockwise for more support.
Turn the lumbar support
counter-clockwise for less support.
188
2009 Expedition (exd)
Owners Guide, 1st Printing
USA (fus)