Hi - the horn on my 2010 C5 Tourer Exclusive (manual, 2.0 HDI) has ceased working - possibly after I went through a flood. The 15A fuse identified in the owners handbook (fuse f2 in box under bonnet) has not blown. Past experience with many citroen's tells me that the fuse layouts are not always as published in the owner's manual, so I'd be keen to know (before I start searching for the horn itself!) from anyone who may known of alternative fusebox layouts on these models....