Why does your horn come on when you start the ignition?

If your horn sounds when you start the ignition, it could be due to a few reasons. One common cause is a malfunctioning ignition switch or wiring issue that causes a short circuit, triggering the horn circuit. Additionally, some vehicles have a feature that activates the horn as a warning if there’s a problem detected during startup. It's best to consult a mechanic to diagnose and fix the underlying issue.