How to Open the Door When the Car Battery is Dead and the Door Won't Open?

[SerenityMarie]

Solutions for a dead car battery are as follows: 1. If the door can't even be opened in an emergency, you can use jumper cables to connect to someone else's battery and start the car using their battery. 2. Alternatively, remove the battery and take it to a battery shop for charging. Since the battery is completely dead, short-term driving won't fully charge it; a longer charging period is required to restore its capacity. 3. If the car battery is dead and the door can't be opened with the remote, you can also try using the mechanical key to open the door. The working principle of a mechanical door lock involves using the mechanical energy from turning the key to drive the gears and achieve the opening or closing of the door. The basic components of a mechanical door lock mainly include the door lock switch, door lock actuator, and door lock controller.