So it wouldn't talk to you and didn't know where you were going? I would say that would be a software issue and you would probably want to go by Lexus and have them reset the system if they can or reinstall the nav (with an updated cd perhaps)
Was the location you were going to fairly new? It might not have had the address in the system....
Was the location you were going to fairly new? It might not have had the address in the system....