luvlexy

Did you try to repair or replace the OE headunit?  Were you getting the same intermittent symptoms I have?  

Please let me know right away how the Android headunit works out.  

Yes, discovered the 4 year old battery had a bad cell.  Thought that may have been the problem.  Replaced with new battery and the symptoms continue unresolved.  

Multi-function Nav started acting erratically.  Screen displays variously “check system”, “external system not connected”, "Air Conditioner" "Audio Off" . 

From what I see on the LS430 forum,. I think my Nav assembly needs R and R.  Or maybe an exchange for refurbished.  I was told that an exchange unit would have to be "initialized" to my car by a Lexus dealer or somehow requires an "initializer" device.  Comment, please.  I am anxious to get this working again.

2004 Lexus LS430, Modern Luxury Package incl Mark Levinson Audio/Nav System

Is there any further information about a fix?  

I have been told by a tech (no Lexus training) that he was told by (unknown) that if the unit is replaced with a "working" one, Used or refurbished, that only a Lexus dealer, or a tech with a Lexus-exclusive programmer device, can initialize the replacement unit to the car.  Anyone hear any information like this?

What did you find to be the problem and how did you fix it?

What weight synthetic oil 2004 LS430 with 146,000 very well maintained.  Northern IL vicinity.