Radio/tape Cd Player problems of the 2004 Infiniti G35

The heating controls and the radio controls work intemitely. The turn off and on buy it's self. It is very scary we they cut out and the window fog up and the heating controls are off. It gets very scary.

I bought my 2004 Infiniti G35 in Jan 2009 it had about 135000 miles. About a month later my cd player said check cd. The radio and cassette player works fine. I tried new cds and clean the cd player but still didn't work. I call Infiniti they said I may have to get a refurbished unit. I told them that the cd player should last longer than 5 years and that I had a 96 pontiac unit that still work. A week later I tried it and it was working fine until about a month ago it stop working and it still not working. I would like to know if Infiniti could help me.