Honda 2008 Ridgeline Owner's Manual page 106

Seats
Driver's Seat Manual Height
Adjustment
Make all seat adjustments before
you start driving.
On RT, RTX, and Canadian LX models
The height of your driver's seat is
adjustable. To raise the seat,
repeatedly pull up the lever on the
outside of the seat cushion. To lower
the seat, push the lever down
repeatedly.
100
Make sure to pull the lever upward
or downward to its full range.
Driver's Manual Lumbar Support
On RTS model
Vary the lumbar support by moving
the lever on the right side of the
seat-back. Move the lever forward or
backward to adjust the lumbar
support through its full range.