Why can't the car start even after jump-starting the battery?

[VonBrielle]

Here are the reasons why jump-starting may not start the car: 1. Confirm whether the voltage of the connected battery is correct, and also check if the jump-start cables are thick enough and the connections are secure. 2. There might be issues with other vehicle components, and it is recommended that the owner tow the car to a 4S shop for inspection. Below are the steps for jump-starting a car: 1. Both your vehicle and the rescue vehicle must be turned off; 2. The order for connecting the jumper cables is to first connect the positive terminal of the dead battery to the positive terminal of the rescue vehicle, then connect the negative terminal of the dead battery to the negative terminal of the rescue vehicle; 3. After ensuring all devices in the dead vehicle are turned off, start the rescue vehicle, then start the dead vehicle, and let the dead vehicle run for a while to charge once it starts normally; 4. Once the vehicle is running normally, remember that the order for removing the jumper cables is the reverse of the connection order.