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Discussion Starter · #1 ·
When I brought my M5 in for service I told them that the screen sometimes goes blank and that when the car is restarted it was fine. They couldn't duplicate the problem so they didn't fix it.

Yesterday when I tried to use the NAV system it gave me some idiot message about my CD and them it wouldn't work at all. I restarted the car, took the CD out and reinstalled it, but it wouldn't work. The gps bar wouldn't even light up.

After I parked the car and it was off for an hour, it worked.

Any thoughts?
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