Chrysler 2007 PT Cruiser Convertible - Manual (Page 172)

4. Attach the cinching tether strap, located at the side of
the seat cushion, onto the hook bar on the center trim
panel and tighten by pulling the cinching strap until the
seat is secure. To return the tumbling rear seat to the latched (normal)
position use the following procedure:
1. Loosen the strap by pushing rearward on the cinching
tether strap buckle.
2. Disconnect the cinching tether strap.
Cinching Tether Strap
Releasing Cinching Tether Strap
172 UNDERSTANDING THE FEATURES OF YOUR VEHICLE