Abstract: A vehicular secondary control interface is disclosed. In an exemplary embodiment, the control interface includes a plurality of category input devices for selecting a function category, with each of the function categories having one or more selectable secondary functions associated therewith. A display area displays the selectable secondary functions associated with a selected function category, highlighting the active secondary function, and further displays parameter information regarding the active secondary functions. In addition, a selection input device adjustably selects the secondary functions associated with a selected function category, and an adjustment input device controls the active secondary function associated with the selected function category.