So my battery had gone flat coz i left the parking lights on.
Now, my PCM keeps telling me that Navigation Disc unreadable.

What to do?

 

Might try rebooting electronics in the whole car:

- Disconnect the (-) cable, then disconnect the (+) cable from battery.
- Using a coat hanger, wrench or what have you, connect the two cables together for at least 30 seconds (making sure not to contact either of the battery terminals)
- Reconnect the (+) cable to battery, then (-) cable.
- Start car and reinitialize PSM by turning wheels fully left, then fully right and drive 30' in a straight line (this will shut off PSM Failure warning)
- Reinitialize windows: lower window completely, release switch and press to lower again. Raise window completely, release switch and press again to raise window (resets travel stops for one touch open/close). Repeat for all windows and sunroof if coupe.

Good luck

 

All of this continues to work, what doesnt work is my navigation

 

You might just try ejecting and reinserting your NAV DVD disc.

 

I had to replace my DVD player about 6 months ago. It was under warrenty.

 

That might be the case for me.
I wonder if the DVD player is covered under my CPO warranty?
Seems like it's time for a war with the dealer

 

I'd try just ejecting and reinserting the DVD as the previous poster mentioned. It might just do it.

 

I suspect it is although I've heard certain electrical components are excluded. Just call your 'stealer' (dealer) service department and find out.

Did you try ejecting and re-inserting the DVD yet?

 

I had the same problem unreadable i just turned it on and off and it works happens a few times a year

 

So, it was really bugging me. It was just not coming on at all. I scheduled an appointment with my dealer for next thursday.
BTW, My local dealer, Euroclassics - they are really cool guys and no, they are not paying me to say this.

But for now, i burnt a new disc, and VOILA !! the navigation system is up and running again. Loaded in about a second.