I am trying to figure out what would cause SNSR.2 fuse to blow randomly on an 07 Elantra GLS. Replaced the speed sensors on the transmission and that did not stop it from happening. It may go months or days or weeks then go through a handful of fuses and then all of the sudden be fine. Sometimes just starting would blow it other times putting it in gear from park would do it. Anyone know what all is connected to this fuse. It is #12 under the hoof fuse box.

 

Do you have the owner's manual?
If so , it should give a description of what that fuse protects.
From what I was able to pull up for a 2007 Hyundai Elantra showed fuse # 12 was a spare, that is why I would check with the particular owner's manual.
If your manual does provide a circuit description we may be able to assist with finding the problem.

Maybe yes and maybe no, but judging from what moves when the shift selector is placed out of park may provide some direction.