Cars feature a uniquely designed ignition switch system. The switch controls all necessary vehicle components. You might drive cars for a long time without noticing the mechanism behind it. There are different positions of the ignition switch in a car. Traditional vehicles equipped with a standard ignition system have four key positions. But modern vehicles only have three key positions. There is a specific action each time you turn on the ignition switch.
Modern vehicles come with a smart key start system. That’s why there is one less key position. The ignition switch is the centerpiece of an automobile. You won’t be able to start the engine with a faulty ignition. It’s important to keep this switch in good condition.
Let’s discuss in detail the positions and operation of the switch.
What happens when you turn on the ignition switch in a car?
The ignition switch is a crucial element of a car’s interior. You cannot start the engine or turn on accessories without an ignition switch. Do not force the key or any other tool into the ignition switch. This could damage the entire ignition system, causing you trouble. Also, do not apply extreme pressure when inserting the keys.
Let’s explore the mechanism behind the four ignition positions here.
1. Lock – First Position
This is the first position of the ignition switch. Manufacturers describe the lock as the OFF position. You need to turn the key clockwise to turn on the ignition switch. The lock position involves only inserting the keys. There is no effect on the steering wheel or other accessories in the locked position. You can only remove the keys in the lock position.
2. Accessory/Acc – Second Position
Wondering what acc means in car ignition systems? It’s the accessory mode. You can use some of the standard accessories in this mode. Accessory or Acc is the second position of the ignition switch. Acc brings to life the radio, stereo system, power windows, and seats.
3. ON or Ignition – Third Position
Next is the ignition position. All electronic accessories become active when you turn on the ignition switch in this mode. According to expert maintenance tips, the ON position is the default position in vehicles. You cannot remove the keys from the ignition switch.
4. Start – Fourth Position
You can now start the engine. This is not the off position of the ignition system. The keys return to ON or ignition, which is the default position. The engine starter can be damaged if you leave the keys here for a long time. Let the keys turn to the default position once the engine is started.
The Bottom Line
That’s all that happens when you turn on the ignition switch. I hope this gives you a better understanding of the ignition switch and its mechanism.