July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Seat Track Position Sensor (STPS): Components
WARNING: This page is about a different car, the 2007 Kia Sedona and 2006 Kia Sedona. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Seat Track Position Sensor And Driver Seat