What to Do When the Mechanical Key Can't Open the Car Door?

[AlexisLee]

Here are the specific reasons why the mechanical key can't open the car door: 1. Connection device failure: The connection device between the door handle and the door lock fails. The door lock mechanism may have come loose due to driving vibrations, preventing the lock from sensing the action of pulling the door handle. 2. Frozen door in winter: If the door lock, handle, or door frame freezes in winter, the key won't open the door. Avoid forcing it open as this can damage the door. Instead, pour hot water on the frozen parts to speed up melting. 3. Wrong key turning direction: Incorrect operation, such as turning the key the wrong way. Generally, turning the key clockwise unlocks the door, while turning it counterclockwise locks it. 4. Lock cylinder failure: Most car owners use remote keys to unlock or lock the door, rarely using the mechanical key. The lock cylinder may rust due to prolonged disuse. Try adding some engine oil to the lock cylinder.