Picture of release button on ignition lock cylinder?

The release button on an ignition lock cylinder is typically a small, often spring-loaded mechanism that allows the key to be removed from the ignition when the vehicle is in the "off" position. It may be located on the side of the ignition cylinder or integrated into the key itself. Pressing this button while turning the key to the "off" position releases the lock, enabling key removal. It's important for proper vehicle operation and security.