It seems that the solutions will react in the anti-slip mat with the foamed dashboard. When I removed the mat, including a depression was not going away! For clarity, I have set a photo is not looked from my car, but has exactly! One sees so there are several interested! I have taken the mat just down because I got installed a new dashboard to guarantee (crack in the supporting structure). Here I discovered the mishap, which was really lucky :-) So practically it may be, to the new dashboard comes to me such a part is no longer !!!