Any one has any luck for it?
It has been full screen for exactly 2 weeks before it changed to split screen. I was told by the dealer who sold me the car the full screen wasn't intended actually. Unbelievable answer as it was the condition sold to me with full screen. And after 2 weeks then Lexus told customer it changed. Was it a trick or false info?

 

If you're talking about the map function in full screen, there is a button on the top right corner i believe that will close the split screen and show the entire maps. I'll update with a photo later if you still find it..

 

nope, it's the back up guideline view.

 

Why is there another thread? If this really bugs you, swing by the dealership and jump into another IS with Nav. I remember the RX, GS, LS does not have a full-screen backup. Also, someone posted an insert from the owner's manual.