Rev Up and Rule the Road 2025: JJ Keller Entry Level CDL Driver Test Challenge!

In order to start a truck that is equipped with a starter button, the first step is to turn the engine key to the 'on' position. This action is crucial because it activates the electrical systems of the vehicle, allowing power to flow to the starter and other essential components necessary for starting the engine.

Turning the key to 'on' ensures that the fuel system is primed and that the dashboard indicators and warning lights function correctly, signaling that the vehicle is ready to start. This is a standard procedure in most ignition systems and is critical for the proper functioning of the vehicle.

Engaging the parking brake or turning on the headlights, although good practices for safety, are not required before the engine can be started. Pressing the accelerator pedal is also unnecessary at this stage and can cause undue wear or instability during the starting process. Thus, turning the key to the ‘on’ position is the essential first step in starting a vehicle with a starter button.