A control system for controlling a vehicle with a hybrid drive comprising an internal combustion engine and an electric motor and a plurality of functional components each divided into strategy, control and actuator sub-components. The device may carry an onboard alarm. The sample thereby emits characteristic x-rays at takeoff angles. The substitute action is selected from: an application of control to the heating element which is provided for a fault situation, a check of the validity of the measured signal, and a monitoring of the heating element.