Hello all, Mrs Smithy has just reported that her beloved C2 (6 years old I think) is refusing to lock because it thinks the passenger door is open. It obviously isn't. I'm presuming this is a sensor problem of some kind, does anyone know how one goes about fixing this? The car's not with me at present but it would be good to have a plan of action when it returns later on. Is it a case of locate sensor, clean, kick, cross fingers? Any help would be appreciated.