Honda Odyssey 2009 Owner's Manual page 188

Seats
To return the seat to the upright
position:
1. Pull the seat out of the recess by
pulling on the handle. Pivot the
seat forward all the way. The front
legs of the third row seat will
automatically latch.
182
STRAPS
2. Pull the seat-back upright with the
strap. Make sure the seat is
securely locked into position
before driving.