Importance

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Abstract

An engine activation device that activate an engine installed in a vehicle is provided with an activator, an acquirer, a storage, a prohibiter, and an engine controller. The activator activates the engine in response to a radio signal from a remote controller. The acquirer acquires an authentication result of a key code stored in a vehicle key possessed by a user. In a case where the acquirer acquires an authentication result that the key code fails to be authenticated after the engine is activated by the activator, the storage stores failure information indicative of authentication failure. In a case where the storage stores the failure information, the prohibitor prohibits the activator from activating the engine. Even in a case where the acquirer acquires the authentication result that the key code fails to be authenticated after the engine is activated by the activator, the engine controller keeps the engine from deactivating.

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First Claim