After doing a bit of searching, I found a couple threads regarding malfunction of the navigation CD player, but no guaranteed fix (unless I missed something). Most of the threads were a bit dated as well. My current situation is I simply went to change from one CD to another and nothing happened. This was random, as I was driving down the road. I've read that sometimes burned CD's can possibly present an issue, but I've been using burned CD's in the car since I purchased it three years ago with no problems. Wondering if anyone has any tips as to removing the head unit, or getting it to work with a simple fix? I'm hoping that I don't have to take it into the dealer, but will if that's the last option. The only thing I've tried is disconnecting the battery for a couple minutes in attempt to reset the system... with no luck. Any input is appreciated.