Why Doesn't the Engine Turn Off After Removing the Key?

[IsaacRose]

If the engine doesn't turn off after removing the key, it may be due to wear on the key teeth and lock cylinder, causing increased clearance. Relevant explanations are as follows: Ignition switch malfunction: Normally, the key can only be removed after the vehicle is turned off, and it must be rotated back to the final position to be pulled out. If the engine doesn't turn off after removing the key and the clearance between the key teeth and lock cylinder is not large, then the ignition switch may be faulty. Wiring issue: Another possibility is a problem with the wiring. In such cases, it is recommended that the owner immediately take the vehicle to a repair shop for inspection and maintenance.

[LeGeorge]

I've been driving for decades, and this situation is usually caused by a minor fault in the ignition switch. If the engine keeps running after you remove the key, it means the power isn't being cut off. Common causes include worn or stuck contacts in the ignition switch or a stuck relay. Just like my old car last year—the lights wouldn't turn off after removing the key, and it turned out the relay's internal spring was broken, failing to break the circuit. Another possible cause is a short circuit or a situation where the circuit remains live even after a fuse blows. If you encounter this, never force it—find a safe place to stop, manually shut off the engine (like using the power switch), and get it checked by a professional immediately. Small issues in the ignition system can damage other components if left unattended. Regular cleaning of the contacts during maintenance can help prevent this.

[DeEloise]

Last time I drove, the engine was still running after I pulled out the key, which felt super weird. It might be a loose wire in the ignition circuit or a faulty switch. Wires in older cars tend to age and cause short circuits. It's rare in new cars, but as someone who's driven several vehicles, I'd advise not driving too far—pull over, turn off the engine, and check the fuses. Don't panic; most cases are simple fixes. Paying attention to dashboard warning lights during normal driving can help detect minor issues early. It sounds scary, but once you understand it, it makes sense.

[Emman]

The engine not turning off after removing the key is a serious safety issue. Possible causes include a faulty ignition switch or a short circuit, which prevents the voltage from being cut off. I recommend safely stopping the vehicle immediately, shutting off the engine, and possibly manually cutting the power to prevent fire hazards. Seek professional repair as soon as possible—delaying could lead to more severe failures, such as engine damage. Regular maintenance and checking the wiring are crucial.

[LaLillian]

From an electrical circuit perspective, the engine not shutting off is due to ignition system failures, such as oxidized key contacts or stuck relays, which prevent current from being cut off. I've encountered similar issues before and resolved them by locating the short circuit point with a multimeter. This problem is more likely to occur when voltage is unstable. Don't wait for it to fix itself; early inspection and repair can prevent battery depletion from affecting the vehicle's lifespan. Regular checks and cleaning of contacts can help avoid such troubles.

[DiJayce]

When I was young, once after pulling out the car key, the engine was still shaking due to a short circuit caused by burnt wires. Old vehicles with oxidized circuits are prone to this issue, often caused by relay or switch failures. It's recommended to stop the car, turn off the engine, and check the cause rather than continuing to drive to prevent accidents. Regular maintenance focusing on the condition of the wiring can reduce such risks. Safe driving is the most important.