Hello Lexus Community,

I'm facing a challenge with my 2005 LS430's screen. It no longer displays the navigation or responds to the menu button. I'm aware that my navigation device is outdated and likely needs replacing, but I'm curious if the menu button's failure to display the "Check System" message is directly linked to the navigation issue, or if it's a separate problem.

Does anyone have insights on whether these issues are connected and how I might go about fixing them? Any advice on troubleshooting or replacement recommendations would be highly appreciated.

Thank you all for your help and guidance!