How do you know ignition is broken?

You can tell the ignition is broken if the engine doesn't start when you turn the key or press the start button, even though the battery is functioning properly. Additional signs include unusual sounds like clicking or grinding when attempting to start, or dashboard warning lights indicating a malfunction. If the ignition system is faulty, you might also notice issues with the vehicle's electrical components or problems with the key fob if it's a push-to-start system. A professional diagnostic can confirm the exact issue.