I know there are a lot of posts on issues with Navigation but my problem seems to be a little different. I have a 2009 Lexus RX and while driving my mapping will start going to random locations and then all of the buttons freeze for about 10 minutes. It is fixed if the car is restarted. I have updated the CD maps, reset it by disconnecting the battery and replaced the fuse. None of these have made any difference. It seems to just be some GPS glitch. Any help would be appreciated.

 

did you updated with a official Lexus/Toyota DVD? it could be a bad disk reader.