Why did the car horn suddenly change its sound?

The sudden change of car horn sound is caused by weather and horn damage. The following is a detailed introduction about the sudden change of the sound of the car horn: Weather reasons: Due to the weather, the rubber of the horn became hard, which led to the change of the sound of the horn. This kind of problem is quite normal. As long as the temperature rises, the problem of speaker voice change will be solved, so don't worry. Horn damage: the horn relay is damaged, the horn contact is damaged, and the horn power cord is damaged, which may cause the horn to change sound. Automobile horn is a kind of automobile audio signal device. Motor vehicle drivers can send necessary signals when the motor vehicle is running to warn pedestrians or other vehicles to pay attention and ensure traffic safety. At the same time, it is also used to urge and transmit signals. The horn of a motor vehicle emits sound through the vibration of a metal diaphragm.