Mercury 2005 Mountaineer Owner's Manual page 443

Seating and Safety Restraints
Using the power lumbar support (if equipped)
The power lumbar control is located on the outboard side of the seat.
Press one side of the control to
adjust firmness.
Press the other side of the control
to adjust softness.
Adjusting the front power seat (if equipped)
The control is located on the
outboard side of the seat cushion.
107
2005 Mountaineer (mnt)
Owners Guide (post-2002-fmt)
USA (fus)