For ignition problems, a car locksmith can fix worn cylinders and fix key-related issues

https://uk-car-locksmithuqep731.lakeviewbrief.com/posts/the-largest-issue-that-comes-with-locksmiths-car-keys-and-how-you-can-repair-it

For ignition issues, a car locksmith can fix used cylinders and resolve key-related issues. They can also reprogram ignition keys to match your vehicle's security system.