Rear diff sensor leaking

[Fb73]

I'm posting this for a friend, which has a leaking sensor on the rear differential (see picture).

We'r having trouble finding the part number of this thing and associated seal and what it's supposed to be (e-locker sensor or ABS sensor ?).

Can it be changed just by pulling the little bolt out, or it may have some wires going inside the diff ? Any advice is welcome !!

 

[xtela]

It looks like the case to cover seal (rtv silicome) is what is leaking/weaping. You may want to try changing that first.

 

[Fb73]

Pic may be confusing but it's not coming from the cover...It's sweating from that sensor on the side...

Anybody already had that issue ?