Water entering the 307 spare wheel

Friends, I have a lot of au entries in the place where my vehicle's fire is located, but I found where I came from, but it is under the bumper.

I http://forum.peugeotturkey.com/forum_posts.asp?tıd=25884&title=307-stepnesine-su-girenler-coz

If my friend car has an original parking sensor, disassemble and check the sensor's brain as soon as possible.