How do ignition switches work? Your vehicle’s ignition switch is a small yet mighty component that holds the key to starting your car. The switch and ignition cylinder are often used interchangeably, even though they are separate, with the switch being the electrical portion.

A bad ignition switch will have problems with starting the engine, keeping it running, or engaging other systems when the key is turned. You might also have issues turning the key. What causes an ignition switch to fail?

If your key gets stuck in the ignition or you experience difficulties starting your car, a faulty ignition lock cylinder or switch is possibly the culprit. You might also see a warning light on your dashboard signaling an issue with your anti-theft system.

After inserting and turning your key, the ignition switch sends signals to activate the appropriate electrical systems in your vehicle. Your vehicle's accessories, such as the radio and power windows, may be powered in all of your ignition switch's positions.

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Ignition Switch with Key, 4 Position Universal Key Ignition Switch 12v for Car, Truck, Tractor, Trailer, Forklift, and More, Acc/Off/IGN/Start

A malfunctioning or failed ignition switch may prevent a car or truck from starting, cause the engine to stall or result in electrical problems. AutoZone has the lowest prices on ignition switches from trusted brands such as Duralast, Locksmart and ACDelco.

Mar 15, 2025 · To replace an ignition switch, you'll need to either have your old switch rebuilt by a dealership so you can keep your old keys or purchase a new switch from a dealership and get a new set of keys. Either way, you should remove your old ignition switch by taking out your vehicle's steering wheel and ignition module cover, inserting the key and ...

The ignition switch, located right behind the ignition lock cylinder (or ignition key cylinder), is a much more complex electrical component. In some vehicles, this switch also reads an anti-theft coding in the key before activating your car’s electrical system.