Can anyone give me details on how to change the brake switch on a mercedes sl500. This model has one screw at the brake pedal, two screws located one at the left and right knee under the dash and two smaller screws on the OBD2 connector. Do all these need to be taken off or not. Should I take the panel off the OBD2 connector. It doesn't seem to be holding the panel in place. Any help really appreciated. I have the part already, but the pics I printed from a prior post do not match my car.

Thanks