Why Worn Key Blades Create Trouble for Your Car's Locks and Ignition
Every day you slide your car key into the door lock, turn it, and expect the mechanism to respond. Over months and years the metal blade of that key gradually wears down. The ridges that match the lock's pins become shallower, the tip rounds off, and the edge that once felt crisp now feels smooth. Most drivers do not notice until one morning the key refuses to turn, or worse, it turns but does not start the car. Understanding what happens inside a lock or ignition switch whe