thanks for the instruction to take apart nav system. I had the same problem you did but I am not to good at taking stuff apart and putting it back together so I took a risk and tried the ruler method and it worked like a charm. I bought a thin plastick ruler and some windex wipes. I wrapped a thin layer around the ruler and inserted it gently into the player going from right to left and left to right slowly. When I removed it the wipe was filthy! I did it slowly 3 more times. started car and nothing but I waited and started car again and I was uploading and in business. I know it was a risk but I figured I would try. If this is only a temp solution and I start to have the same problem I will bite the bullet and take it out and clean it the proper way. Thanks for the instructions!