We had a 2014 Trilogy 3650 RL that had a RV-Lock door lock which we never had an issue with. Our RS has the same one, we had to replace the circuit board once and now the battery in the remote is toast, wouldn't be a big deal but it is 12Volt 27A
, about half the physical size of a AAA and not easy to find. However having said that, customer service at RV-Lock is top notch.
I always keep a spare key in the truck, it served me well once.