- Faulty flasher relay: The flasher relay is a component responsible for regulating the flashing of the signal lights. A malfunctioning or worn-out flasher relay can produce a buzzing noise.
- Electrical short: A short circuit in the electrical system, particularly within the signal light circuit, can cause a loud buzzing sound when the signal lights are turned on.
- Loose or corroded connections: Loose or corroded connections in the signal light circuit, including the socket contacts or the wiring, can lead to a buzzing noise due to poor electrical contact.
- Grounding issue: If the signal light assembly or its wiring is not properly grounded, it can create a buzzing noise due to the electrical current not completing the circuit correctly.
- Defective turn signal switch: A faulty turn signal switch, which is responsible for controlling the signal lights, can generate a buzzing noise.
To diagnose and fix the problem, you should inspect the electrical components and connections related to the signal light circuit, including the flasher relay, sockets, wiring, and ground points. Replacing any faulty or worn-out components should resolve the buzzing sound. If the issue persists, it's best to consult with a professional mechanic or auto electrician.
