What's the reason for the buzzing sound when turning the key but the car won't start?

[SanRyder]

Turning the key and hearing a buzzing sound without the car starting is usually caused by a dead car battery. A depleted car battery is a very common issue. In such situations, you need to jump-start the car using another vehicle or an external power source. Additional information: 1. Push-starting: If the car is a manual transmission, you can use the push-start method to activate the generator and start the vehicle. It's important to note that push-starting can cause some damage to the vehicle's engine and clutch. Once the car can start normally, the external power source should be disconnected promptly to avoid any adverse effects on the car battery. 2. Battery: The battery is a wearable part that needs regular replacement. As the number of charge and discharge cycles increases, the battery's performance will gradually decline. During charging and discharging, ions in the battery move through the electrolyte. Some ions react chemically with the electrolyte as they move, and with more charge and discharge cycles, the number of ions in the battery decreases, leading to reduced battery performance.