Weird Cover under the Dashboard.
 

hey guys, so one day i went and got in the car and just see a plastic cover laying down in the passenger side floor mat , its number 126 in this drawing(http://www.mbpartsworld.com/images/p...060.990526.jpg) and here you can find what was behind that cover(http://imgur.com/a/wRPdO) does anybody know what it is ? thanks !

access panel for the wiring, CPU's are above the 126 panel. the engine compartment side of the same area is a black plastic cover that keeps dust and water from the electronic chips. Don't use a hammer in that area!!!