Why is the Edge's horn not working?

[MartinRose]

If the Edge's horn is not working, first check if the horn fuse is blown. You can test whether the horn relay engages while pressing the horn. If it doesn't engage, inspect the relay coil. If the relay functions normally, you can directly measure whether there is power at the horn. If there's no power, it indicates a short circuit or open circuit in the wiring between the relay and the horn. If there is power, check the horn's ground wire. If everything is fine, the issue lies with the horn itself. The Edge is a mid-to-large-sized crossover SUV model built on Ford's global mid-size vehicle platform. The new Ford Edge luxury series is equipped with Ford Co-Pilot360™, featuring full-speed intelligent adaptive cruise control, pre-collision assist with automatic emergency braking, evasive steering assist, lane-keeping system, post-collision braking, intelligent navigation assist, blind spot monitoring, active park assist, and other configurations. These features help drivers navigate complex road environments with ease. Some models achieve Level 2 autonomous driving capability, delivering a safer and more comfortable driving experience.