OK, thanks all. Under the step is where I thought it was, and it is. The rubber on our step was loose and someone just put clue on the underside of the rubber, so when I undid the screws to lift up the rubber came up but not the "cover".
We will take back and find out why we can't get to the battery when we return from our trip. Still under warranty so should not be a hassle.
Thanks for all the input.
Dave & Pat
Solera 2014 24S
1992-2012 full timing