What to Do When the Car Battery Dies and the Key Can't Open the Door?

[DelBraxton]

The solutions for when the car battery dies and the key can't open the door are: 1. Replace the battery; 2. Use the mechanical key to open the door. The method to replace the car key battery is: 1. Remove the mechanical key; 2. Insert a flat-head screwdriver into the "open" position at the bottom and pry it up and down; 3. Once a gap appears, use the screwdriver to pry open the key along the gap; 4. Remove the old battery and replace it with a new one. The functions of the car key are: 1. Press the horn-shaped button to locate the car; 2. After turning off the engine, hold down the lock button to close the windows; 3. Remote lock and unlock. The working principle of the car key is: A weak radio wave is emitted from the owner, which is received by the car antenna. The electronic controller identifies the signal code, and the system's actuator performs the action of unlocking or locking the car.