Got my last problem sorted out and now this has popped up. When I lock the car on the remote the lights flash and the horn sounds, or at least it did. Now the horn doesn't sound although the lights flash and the doors lock. The horn itself is working fine, it just no longer sounds when locking the car. Does anyone know if there is a separate fuse or something that could be the problem here? I've checked through the diagrams of the fuse boxes but can't see anything that would relate to this. Any ideas?