
The method to handle a broken car key in the door lock is: 1. Prepare a hot glue stick and melt one end with a lighter; 2. Insert the hot glue stick directly into the keyhole, wait for it to solidify, then pull it out. A car key is a tool for switching and starting the car, with functions including: 1. After turning off the engine and exiting the car, long-press the lock button on the key to remotely close the windows; 2. Long-press the trunk unlock button to automatically open it. Precautions for using car keys are: 1. Avoid contact with magnetic objects; 2. Avoid exposure to high-temperature environments; 3. Avoid hanging them with other keys or accessories; 4. If lost, promptly match a new key to prevent property loss.