Hi there. My 2010 2.0 C5 Exclusive started to "bounce " on my way home today, as though I had a flat tyre. When I pulled up,the rear of the car was sat on the bump stops. When I tried to raise the setting I got a warning up saying "suspension fail ". I managed to raise it slightly and get the half a mile home before it went completely down again. On looking underneath the rear of the car I found a switch that seems to be broken. There seems to be a link from the rear anti roll bar that isn't connected to anything. Could this be the problem? Is it an easy fix if so? Any help would be appreciated, thanks in advance