Display for CD/ song number or radio station has quit showing. How do I fix it?

I drive an '04 Acura tl with the navigation unit. But the unit doesn't work. In the dash there
Is the display screen which shows temperature, time, what radio station or song number then temperature again. My 1 year old was playing around with the buttons and now everything shows except where it would normally display the song number or station. I can't find it anywhere in the manual. I also called my local Acura dealership and they had never heard of that before. I unhooked the battery, let it set then hooked it back up and now it doesn't display the radio station and the clock time is completely wrong! How do I get the station/cd to display again as how do I get the time fixed since the navigation unit doesn't work?