Horn
The horn is the audible warning device operated from the steering wheel.
What is Horn?
Most cars have one or two electric horns. A relay switches the horn current. The signal often passes through the clock spring. Horns can be single-tone or dual-tone; dual-tone sets sound richer. Water and corrosion at the front of the car are common causes of failure.
How it works
Current vibrates a diaphragm, producing sound.
Why it matters for your car
A silent horn can mean a fuse, relay, clock spring or horn fault. A working horn is required for inspections.
Other terms
- Brake Caliper Slide Pins (Guide Pins)
- Brake Disc (Rotor)
- CHAdeMO Connector
- Coachbuilder
- Coolant Level Sensor
- Cylinder Head Skimming (Resurfacing)
- DOT Code (Tyre Date Code)
- Hill Descent Control
- Interior Detailing
- Primer (Primer Surfacer)
- Rod Knock (Big-end Knock)
- SAE Levels Of Driving Automation
- Service History
- Shift Solenoid
- Smartphone Integration (Apple CarPlay, Android Auto)
- Steering Wheel
- Synchromesh (Synchroniser)
- Third-Party Liability Insurance
- Tree Sap On Paint
- Wiring Diagram (Circuit Diagram)