I had my D1 Unit in my 350z for about two years now. I moved to California about 6 months ago and I bought a CD from ebay. I didn't know it was fake CD but it worked great. I traveled 3000 miles from CA to NJ two months ago and when I go to PA, my navigation told me to switch over the CD, so I did. It saids the CD is not working (don't know the proper error message). It's just BLANK screen with error message. I switched over to my west side CD and it doesn't work at all now.. my navigation pointer is on a sea water.. .. also I have problem when my car gets real hot.. it won't open.. Grrrrrrrrr