A horn can stop working or become intermittent without producing a dedicated dashboard alert. A generic horn illustration should not be treated as proof that every vehicle monitors horn operation electronically.
Notice whether the horn is silent, unusually weak, or unreliable, and whether other steering-wheel functions are affected. Avoid opening the steering wheel or probing nearby connectors because restraint-system components may be present.
Contact The Car Clinic of Miami in Miami about the symptoms. Identifying the operating pattern is a better starting point than assuming a failed horn always requires replacement of the horn unit itself.