NorayrG

Dear friends, I have a Lexus RX 350 2008, I have just bought it as a used car, and am very happy with it. But recently I have noticed that I can't open the maintenance menu, in the info screen, also i can't open the map, and menu buttons. When I press MENU button, it does nothing, also when I try to enter the maintenance from info it says "program cannot read, please consult with dealer", if someone knows ho can i fix it. Maybe it is the problem of my navigation disc, or player.
Also please note that I still can use trip info, phone options, audio, screen settings. This menus I can open, but i can't open calendar, maintance, map...