How to Fix a Car Ignition Lock That Won't Turn?

[VonAsher]

Here are the reasons and solutions for a car ignition lock that won't turn: 1. Cause Analysis: There is an ignition switch assembly on the steering wheel, with one half being the lock cylinder and the other half being the base. If the base lacks lubrication, you can try spraying it with dashboard wax. 2. The lock cylinder won't turn mainly due to key wear. Over time, the key becomes smaller than its original size. Normally, when the key is inserted, the pins in the lock cylinder should drop, aligning all parts on the same plane, allowing the lock cylinder to turn. When the key is removed, the pins pop up, preventing the lock cylinder from turning. 3. When the key wears to a certain extent, inserting it won't fully drop the pins in the lock cylinder, causing misalignment and preventing the lock cylinder from turning. 4. The most effective solution is to find a professional to create a slightly larger key based on the worn-out key.