2006 IS350 .....the whole top half of the navigation screen and buttons have no power... just the clock, hazard and security blinker work.... all the fuzes are ok...

 

Did you check this thread? Do you have the same problem?

https://www.clublexus.com/forums/is-...esponsive.html

 

You have bad main board. It becomes more popular now. You need to replace the display driver board Display driver board has green connector need to be replaced
This is the one cause the problem

 

ok...i have looked at all the threads that deal with this and mine is completely dead, i have not seen someone have anything similar to this........were can i get one? or is this a diy? I'm guessing its in the middle of the stack?

 

https://www.clublexus.com/forums/is-...n-related.html

 

I'm having the same issue and was thinking about just getting a an aftermarket head unit. Do you think that would solve the problem?

 

Most of after market unit only plug and play for non navigation equipped car. If you have factory NAV then more wiring work will be involved but doable

 

You need a factory NAV