Not quite sure I understand.
My 2006 GS300 has a screen in the dash but doesn't have the navigation feature. Do I need new hardware (ie a new screen) to add nav? Is it just a software fix?
if you find out any info on this can you let me know also, -dcfish can you let me know also if you have the Nav available for a 06 GS300
email address - bme_ii@yahoo