I have a 2005 limited and the lcd screen below the navigation screen that shows temp and time is only half lit. It is cut directly in half, half lit and half not, does anyone know how or if I can replace that light? Also my buttons for a/c temp control etc, all of the buttons do not light up, they only light if one is in use? Does something need to be replaced there as well?? I bought it used and those buttons have not lit up since I got it. Thanks!