Hello, today i went out to my car and turned it over and the fuel gauge read empty and I had half a tank when I parked it. I went and put some gas in it and it still stayed under the empty line. Als, when I drive it it accelerates very slowly and my power locks and wipers all dont work. It also was making a lound grinding type sound when I would lock or unlock the drivers door either by keyless entry or by the switch in the interior. What could this be?