It's not the horn that beeps, it's a beep that's coming from the engine somewhere. It's not that loud nor quietThen I'd be off to a competent dealer. The horn shouldn't beep unless the button is pressed. You could have a short in your wiring between the clutch switch and the horn or it could be in the computer, but I don't think the horn is part of the BUS circuit.
Try idling in neutral and just pulling the clutch in and out.
But definitely off for a full elec check at the dealer.
It does it no matter what rpm or speed, it just started happening, the sound doesent last longer if i hold the gear, the sound doesent do anything different if I alter anything. And it happens only sometimesdoes it make the same sound (pitch) regardless of rpm or gear? if you were to keep pressure on the shifter longer, does the sound last longer? has it always done this? has it changed... getting louder or softer ? can you make the sound different by doing anything different?
All gearsA bearing would make a chirping sound if it is damaged but what bearing is used only when shifting? Can't be that, it would have to be on a shaft that is turning fast. When shifting, what is moved?
does it happen is all gears or just some or one?