RAM 1500 Owner's Manual page 286

284 UNDERSTANDING THE FEATURES OF YOUR VEHICLE
4. Rotate the center handle horizontally to secure the side
gates in the closed position.
Side Gates Closed
5. Lock the center handle to secure the panel into place
and assist against theft.
Extender Position
The extender position allows you to load the bed of the
truck beyond the tail gate. The bed extender will add an
additional 15 in (38 cm) in the back of the truck when
additional cargo room is needed. The extender position
utilizes a locating pin and rotating handle located on both
sides of the truck bed near the tailgate.