No wiring info, etc. available online, so you may get lucky and somebody be up on the newer sernors to know but from looking the best I could see is that the white plastic part is of a type which makes me think it was meant to be snapped into a notch of some type. Another idea is that it appears there might be ID numbers on the side and if you press the release snap one each side (right next to the thumb?) it may unplug from the wiring to let you see a name and model number of some sort to do a search online for ideas on what it might do?
There are thing that are not used if we don't have a specific option, so it may not be one you even need but something that comes standard on chassis but not necessarily used by Winnebago is you don't have that option.
Possible you need it but also maybe not???
2015 Winnebago Vista 31KE on 2014 chassis