Welcome to the forum & irv2.
The level sensor should not have changed anything its just to show coach when level.
The sensor will be approximately at mid coach.
This link will give
some direction as to installing a new sensor and how to adjust.
Unless a rock or something else hit it the sensor should not cause your problem
There is a other leveling sensor on a DP coach in compartment under drivers seat that you may have and I will have to find it if its not in the link provided.
Here is the leveling type
you may have its in same thread.
In my signature below are QT's links that will cover many items in your Newmar.