The little electrical gremlin has been popping about and providing the following inactive/error messages:
Dynamic drive inactive
Rear camera inactive
SOS phone inactive
Service vehicle immediately (ALL the icons were yellow from oil to brakes...everything)
I-drive/NAV/SAT/radio inactive
Door locks stopped working
push start button and SAV does not start, turn over, nothing.

Each of these, and probably one or to more I forget, have come and gone at the whim of that little gremlin hiding in the dash someplace.

The dealer can't find anything wrong because the gremlin only shows up now and then. So, "The problem can't be duplicated."

Then I started thinking about how the car seems so busy while alone in the garage. If you've never passed by the truck long after you left it, you may not know that there are things working and "whirring" and doing whatever the truck does while nobody is in it.

I decided to open up the trunk and put it on a battery tender overnight once a week for a month. And voila no more gremlin. I have been trouble free only because I have to plug in my $70K luxury vehicle before I put it to bed at night.

Maybe there are others with the same problem and this seems to do the trick. For the moment, I'm taking this in stride, but if this f*&$%r strands me, its history.