Yes, there is a limit switch under the bed up near the top of the bed. It can be difficult to get to due to the weight of the mattress.
I believe the switch is always on the upper left side - but it may be on the upper right on yours.
You can lift the bed platform to get to it but in my experience it will take 3 strong men and a small boy to get it up and hold it while you bend the tabs on the limit switch to make the bed move.
The day we got our RV out bed didn't move. A strong service tech from the selling dealership came over lifted the bed and bent "something" and this has worked flawlessly.
Every once and a great while - once a year or so - the bed will not respond. I just go to the bottom of the bed and push the bed platform forward with my leg. This moves the bed a silly millimeter toward the head board and suddenly the switch works.
There have been other posts on this here - here's a recent one with much of the same info as above - but links to other info too.
https://www.winnieowners.com/forums/...em-357230.html