First post, sort of feel like a leach having not contributed anything to this point.
I recently purchased a 2007 RC400h and it's been a fantastic vehicle. My wife loves it (I still get to drive the beater...go figure). Anyway, today in between school runs, the audio opted to quit working. Specifically:
Mark Levinson system with Nav, DVD changer and Rear Seat entertainment (no sat).
Bluetooth connection still functions, voice commands still work including audio controls.
Steering wheel controls all work and perform the functions expected with the following exceptions:
There is no audible audio so despite the volume numbers changing on both the radio display and the nav screen, there is no audio
Using the "Seek" function while in radio mode, it searches endlessly without every picking up a station.
Memory buttons work to select pre-programmed stations and the steering wheel controls to cycle mode and stations works.
The DVD changer shows 2 CDs installed (accurate) but it will not initiate them - it makes no attempt to "read disc", I can't eject them, I can't play them.
Cycling the mode to the rear seat entertainment, suddenly the audio works. No problems listening to the kid's movies from the back seat, but that's not really cutting it.
Primary symptoms:
No audio from the speakers except the rear seat DVD
DVD Changer registers loaded CDs but does not access them
No radio station tuning
Are there easily obtainable service / troubleshooting manuals for these vehicles? A logic flow chart? Am I dead in the water with a "broken" head unit or might I find something shorted in a harness somewhere?
Any and all help greatly appreciated.
-Andrew
Thought I'd come back and post the resolution - Lexus pulled the head unit and sent it off for repair, so we spent the hottest part of the summer without A/C or audio, but it works like a charm now. No information about what area failed or what the fix was beyond "repaired head unit".
