Are Mechanical Keys Made of Iron?

[SilasAnn]

Car mechanical keys are not made of pure iron but of an alloy. Below are the specific reasons why a mechanical key might not open the car door: 1. Connection Device Failure: The connection device between the door handle and the door lock may fail. Due to the jolts during driving, the door linkage might detach, preventing the door lock from sensing the action of pulling the door handle. 2. Frozen Door in Winter: In winter, if the door lock, handle, or door frame freezes, the key might not open the door. If the door is frozen, do not force it open as this could damage the door. Instead, pour hot water on the frozen parts to speed up the melting process. 3. Incorrect Key Turning Direction: Operating the key incorrectly by turning it the wrong way. In most cases, turning the key clockwise unlocks the door, while turning it counterclockwise locks it. 4. Lock Cylinder Malfunction: Most car owners use remote keys to unlock or lock the car doors and rarely use mechanical keys. The lock cylinder might rust from disuse. In such cases, try adding some engine oil to the lock cylinder.