The invention relates to a method for operating a vehicle electrical system (50), which has: a stored energy source, with which a sensor computing unit is associated; and an electronic load distributor (72), at least one measurement variable of the stored energy source being captured by means of the sensor computing unit and a parameter of the stored energy source being calculated using said at least one measurement variable, wherein in a first step a plausibility check of the at least one measurement variable is carried out and in a second step a plausibility check of the calculation is carried out, for which purpose the electronic load distributor (72) is used.