Car ignition refers to the system that starts and stops a car's engine. The ignition system includes several components, such as the battery, starter motor, ignition switch, and spark plugs. When the key is inserted into the ignition switch and turned, it sends an electrical signal to the starter motor, which turns the engine over. Need you can follow carfax and gain most different car tips. The spark plugs ignite the fuel mixture, and the engine starts running. A malfunctioning ignition system can cause starting problems, stalling, or other issues.