20794779
Horn Button
Volvo

The horn button is the user interface for the vehicle’s audible signaling system, located on the steering wheel or control stalk. Although small, its reliability is vital for safety, enabling quick alerts to other road users in hazardous situations. A high-quality horn button resists corrosion from moisture and sweat, provides a tactile press feel, and maintains consistent electrical contact with minimal resistance. In addition to signaling, some horns integrate with vehicle electronics to trigger auxiliary functions or programmable warning tones. Worn contacts or a sluggish response can result in delayed or inaudible alerts, which undermines safety protocols on busy highways or complex urban routes. Replacement demands compatibility with the steering wheel hub and horn switch assembly to avoid binding or misalignment. Proper electrical inspection ensures a clean circuit path, protecting the horn function and reducing the risk of false triggers. Source One Parts Center recommends verifying steering wheel compatibility and ensuring secure connections during installation.