I'm told this pn TriMark series 030-0900 is standard for the Fleetwood Class A's. There is also another series pn inside the lock where you have to remove the inside to view. It's critical.
I've also read that Class A motorhomes, because of the egress system being only 1 point of entry, that manufacturers aren't making a keyless entry lock as it wouldn't be certified for egress. I'm only going by what I have read...and the lack of options seem to support that.
lock is starting to give me some trouble....but I haven't investigated replacement parts...which I'm also told ARE available. I've also seen entire lock units available albeit pricey.
Good luck. Attached is a doc from Tri-Mark on adjustments. Also is a company that may have what you need.