Method for controlling an operating state of a vehicle

A method for controlling an operating state of a vehicle, wherein the control method is such that the operating state is a locked state (E0) which immobilizes the vehicle (100), and can be modified in order to adopt any of the following unlocking states:

• a total unlocking state which allows activation of an operating mode of the vehicle without any restrictions,
• at least two partial unlocking states which each allow the activation of an operating mode associated with the partial unlocking state and which allow restricted activation of the vehicle,
• and in that wherein the control method comprises:
• a step of receiving a control instruction requesting activation of one of the operating modes,
• a step of modifying the operating state so as to change it from the locked state to a selected unlocking state associated with the operating mode for which activation is requested in order to authorize activation of said operating mode,
• a step (E102) of activating the authorized operating mode,
• and in that the step of modifying the operating state comprises, after receipt of the control instruction:
• a step of transmitting an encrypted key identifying the operating mode for which activation is requested, said encrypted key being transmitted by a first computer of the vehicle to at least one second computer of the vehicle, and
• a step of said at least one second computer receiving the encrypted key, resulting in the at least one second computer switching from the locked state to the selected unlocking state associated with the operating mode for which activation is requested in order to authorize said at least one second computer to provide at least one service that assists with implementation of the operating mode identified by the encrypted key received.