The invention relates to a method (200) for monitoring a state of an electronic circuit unit (120) of a vehicle (100). The method (200) comprises a step of implementing (210) a first processing specification (150) on a first arithmetic and logic unit (145) of the electronic circuit unit (120), in order to obtain a first processing result (155), and implementing (210) a second processing specification (165), which is different from the first processing specification (150), on a second arithmetic and logic unit (160) of the electronic circuit unit (120), in order to obtain a second processing result (170), wherein the second arithmetic and logic unit (170) is designed to implement the second processing specification (165) independently of the first arithmetic and logic unit (145). Further, the method (200) comprises a step of identifying (220) a correct state (180) of the electronic circuit unit (120) when the second processing result (170) is in a predetermined relationship with the first processing result (155) and/or a predefined criterion and/or when the first processing result (155) is in a predetermined relationship with the second processing result (170) and/or the predefinedcriterion, wherein the step of identifying (220) is implemented in a safety area (300) of the electric circuit unit (120), the safety area (300) of the electronic circuit unit (120) having a protection module that is designed to ensure that algorithms are implemented with better protection against erroneous execution in comparison with the first (145) or second (160) arithmetic and logic unit.