JimM

What is the DVD disc in the vehicle? It needs to be an 86271-3303(2 or higher) to be compatible with your vehicle. If it is an 86271-3304(2 or higher) the DVD disc not compatible with the DVD unit in your vehicle. Lastly if the correct map disc is installed the DVD unit has failed. I am not aware of any authorized repair facilities in the US. The DVD units are sophisticated hardware... the only other option would be to pick-up a reman unit from a Lexus dealership. If that doesn't appeal to you there is always the junk yard. :( ← NavGuy The DVD that is in there is 86271-33032 - the right one. Thanks for that info. Before I go to "toast" status and buy a reman from a dealer I would love to go deeper. I bet this thing is expensive, right? Eeeeeeeeeeeeee! I am not an auto tech but I am a computer network tech. Is there anything else I can do myself? The unit "looks" to be working correct in that a) the optical laser lights, B) the disk spins up, c) the disk is read (it can tell a program disk from a fake), and d) the DVD reads perfect in my pc. If you (or anyone else reading this!) has any ideas - even some long shots, or knows of a repair facility, I would be very appreciative and would owe you a few beers and a few tequila shooters and probably dinner when you come to Southern Idaho. I would also be open to paying someone to advise me if we could get some results. Again many thanks. Jim

My problem is that the NAV does not work (everything else does). The screen says "NO DISK INSERTED" when no map disk is in the related DVD unit under the passenger seat, or it says "PROGRAM DISK INSERTED" when the disk is in there. My belief is that a disk update might have occurred with a disk given to me when I purchased the car (the problem was present then too). The diagnostics error is 58-42 which translates to "dirty or scratched disk". It is not. The DVD reads great on my pc. I have tried using a DVD Unit Cleaner in the drive with no results. The DVD Unit is described as follows: TOYOTA 86841-47020 ----------------- 462100-0364 12V s/n 418794 DENSO Made in Japan U1 Questions: ======= 1) Could you tell me please if I am doing something wrong, what I need to do? Or, 2) if you believe the NAV DVD Unit is having a problem who you might trust and refer me to repair it? or, 3) if you don't have any answers, who you might refer me to who could possibly help. Many thanks!