Sorry I didn't respond sooner - I'm just not driving my G35 as often (damn high California gas prices!) so it was a few additional months until I had to bring it in for service.
A week or so ago I brought it in for a simple oil change at the dealership and my "service rep" didn't seem the most competent unfortunately. He told me "well, its a $5 part that will cost big bucks to replace, and everything may never go back together right again" (side note - Are you f'ing kidding me!? You`re the god-damn dealer! You gotta be able to put the dash back together right!). So, I had him clarify what "big bucks" meant and he said "$150-200" which does not sound like a lot considering they have to take the whole dash apart. I informed him that thats not too much (though of course its not a formal quote) and that if I had them do the work I wanted every single LED replaced, not just the oneso I could be confident this would not happen again in the next year or so (seemed dumb that he didn't recommend that himself).
In the end I opted not to have the work done since its not hurting the car, though if/when I decide to sell I will probably just bite the bullet on it and pay the $200 to make sure I get top dollar in the sale.
If anyone comes up with any advice about a better place to take my car to get the LED replaced (such as a Nissan dealership or car stereo installation place, etc) just let me know!