I changed oil on my Prius, and noticed something funny. Its some component that is just dangling by its elect. cord on right front side just behind the bumper grille. Its round and in a gray platic housing. Its marked Denso. Id have to take the bumper off to get to it to tie-wrap it in place or something. Anyone know what it is? Perhaps the contant swinging/ flexing while driving would eventually break a wire?