The invention relates to a device for controlling the operating state of a system for the automatic starting/stopping of a heat engine of a vehicle. The invention is characterised in that the device comprises at least one operating state indicator (F1, F2) which is associated with an operating mode of the system and which can adopt a first position (B1, P1) in an operating mode inhibition state, a second position (B2, P2) in an operating mode activation state and a third position (B3, P3) in an operating mode intermediate state.