Sorry to highjack this post. I haven't had a problem with mine yet and from what I've gathered it's probably just a matter of time before I do! Is it at all possible to seal the unit and hence prevent the ingress of water, mud, etc.
http://www.jeepforum.com/forum/f96/o...study-1135688/
Looking at the pictures in the link above, it appears that the circuit board and electric motor are only as good as the gaskets and seals within the unit itself. Since it's located way below the fording depth, it seems odd that it isn't waterproof.
The DBOR system looks simple and reliable. The OEM unit on the other hand seems way too complicated for what it's meant to do.