I just got an 02 SC430 and I am going through a few things. The Nav screen works fine but is frozen in the rear tilt position. Anybody have any info on this? I would be okay if it were frozen all the way forward

Ralph

 

If it was tilted forward the door would not close.

Remove the NAV screen and look it over. It may be something simple.

 

This has been an ongoing problem with sc430 Navigation systems. Last year (2015) my lexus experienced a failure of the tilt mechanism. I purchase a used Navigation system and replaced my system. At first, all seemed well but with a week or so the same problem occurred. Bummer, so I replace the air conditioning control, bought a used one and replaced it. No joy, so the problem was not in the air conditioning control. Next, I replaced everything back to original and suddenly everything worked for several more weeks and the tilt failed again. Possible that both Nav heads had the same problem? So replacing the Navigation display head and/or the air conditioning control did nothing. I have checked cable loom and all seems good. Grounds and Power are good. This might be related in some way to another system, of which I can't figure out. Next, I'm going to bite the bullet and take it to the dealer and see what they come up with. Any Lexus techs out there with any ideas?