Hi my 2009 Patrol ST has lost its central locking, it wont lock with the button on the drivers door, it won't lock with the key (only the door that you use the key in), wont lock with the remote. I can hear a faint click some where under the dash when I push the central locking button but no doors activate, cannot find a fuse anywhere that has blown, (unless there is a hidden one that I don't know of). Has anybody else had this problem, oh and it happenned suddenly when we were camping, morning it worked tried again in the afternoon and nothing, thought I had a flat battery but it started straight up.