I want to open up what seems to be a passage from the trunk to the back seat of my "07 ES350. There is the small, square passage behind the armrest, but I find a larger structure in the trunk that implies a fold-down function. Also, in the trunk, on the underside of a panel just above the opening in question, a ring is attached to a wire cable, looking like it is to be pulled toward the driver's side. It does not budge. The owner's manual mentions nothing about any of this, even the obvious smaller opening. Thanks for any guidance! Steve C
