What is the solution when the car is completely dead and the door cannot be opened?

[DamianFitz]

The solutions when the car is completely dead and the door cannot be opened are: 1. Take out the mechanical key, pry open the protective cover of the door handle on the left side of the car door, find the key slot, and use the mechanical key to open it; 2. If the door does not have a keyhole, seek help from a car 4S store or let a professional repairman solve the problem. The methods for maintaining the battery are: 1. Start the car regularly to charge the battery; 2. When the electrolyte is insufficient, add distilled water or a special replenishing fluid; 3. Frequently check whether the small holes on the battery cover are ventilated during daily driving; 4. Check whether the positive and negative terminals of the battery are oxidized; 5. Check whether any part of the circuit is aged or short-circuited; 6. Turn off electrical equipment when leaving the car.