I have a 2005 X5 and was wondering if it's standard practice for the nav DVD drive to always be running, searching the disc. The Power LED is also continuously flashing, though I'm not sure what that indicates. Otherwise, the navigation seems to work fine. I have noticed this in the morning after the car has been parked and off for 12+ hours.

Is this normal operation? If not, is there a fix?

Thanks.
- Dave