RE160299 - AXLE 3166 Automatic Control Function Parts group 3166 Automatic Control Function 3166 Automatic Control Function . Return-to-Dig (Z-Bar) Return-to-Dig (Powerllel™) Return-to-Dig (Tool Carrier) Boom-Height Kick-Out / Return-to-Carry (Z-Bar) Boom-Height Kick-Out / Return-to-Carry (Powerllel™) Boom-Height Kick-Out / Return-to-Carry (Tool Carrier)