I was attempting to change the oil in my 2008 451 (unsuccessfully, since I couldn't get the drain plug to budge) and noticed that I have a broken wire. It is the wire immediately to the right of the oil filter. The plug is a rounded square, blue connector. It looks like it may have been pulled to the breaking point at some point in the past. Could anyone tell me what this wire is connected to? It looks like it feeds into the main electrical cable that runs across the top of the engine compartment, but I couldn't verify that. There has been no reported errors or engine lights popping up, so I'm at a loss as to what it is used for. I also could not find an electrical schematic of any kind to point me to what it might be, so if anyone knows where to find one, that would be appreciated as well.