On my S2 the window cables coming from the body in the footwell through to the door are near the hinge and stay mechanism. The slot is a little too small for the number of them and they tend to pinch. This led to a couple of the wires shorting and needing to be replaced. I found this out as I asked the dealer to install some thicker speaker cable and they gave me that little look. "I don't want to be the person that says no to him!". They sorted it all in the end
