To start a vehicle using an ignition key, you move the key through specific positions in the ignition cylinder, culminating in engaging the engine's starter motor.
Understanding the key positions is fundamental to the process. According to the provided reference, there are typically three main positions involved in starting: ACC, ON, and START. Each position serves a distinct purpose before the engine is successfully running.
The Step-by-Step Process
Starting an ignition key vehicle follows a simple sequence of turning the key:
- You can optionally turn the key to the ACC position if you wish to use vehicle accessories like the radio or power windows without powering up the entire system or starting the engine. The reference states, "Turn the key to the ACC position to use features like the radio without starting the car."
- To prepare to start the car, you must next turn the key to the ON position. The reference specifies, "To start the car, turn the key to the ON position first." This powers up the vehicle's electrical systems and dashboard lights.
- Finally, to engage the starter and begin cranking the engine, you briefly turn the key further to the START position. The reference instructs, "Then briefly turn it to the START position so it cranks."
- Once the engine fires up and runs on its own, release the key. The reference advises, "Keep cranking only until the engine fires up, or a maximum of ten seconds." The key will typically spring back to the ON position automatically.
Key Ignition Positions Explained
Based on the reference, here's a breakdown of the key positions:
| Key Position | Function (As per Reference) | Notes |
|---|---|---|
| ACC | Use features like the radio without starting the car. | Powers accessories only. |
| ON | First step to start the car; powers main electrical systems. | Dashboard lights usually illuminate. |
| START | Briefly turn to this position to crank the engine. | Engages the starter motor; should only be held briefly. |
It is crucial to release the key from the START position immediately after the engine starts to avoid damaging the starter motor, and never hold it in the START position for more than the recommended duration (e.g., ten seconds, as mentioned in the reference).
