An electronic start system for an agricultural machine is configured to enable the machine to stop the engine while continuing to power onboard electronics and start the engine so long as one or more sensed conditions are met. The system can include a key lock operated by a physical key held by an operator and a button which can be pressed by the operator. The system can also include one or more sensors disposed on the machine for detecting various conditions. When the key is turned on, power can be provided to the onboard electronics, regardless of the state of the engine. Thereafter, when the button is pressed, the engine can be turned on if the one or more sensed conditions are satisfied, such as detecting a closed door, an operator in a seat, an activated brake, and so forth.
