Abstract: A method for operating a vehicle electrical system, which includes an energy store. The energy store is assigned a sensor processing unit, and an electronic load distributor. At least one measured variable is detected using the sensor processing unit, and a parameter of the energy store is calculated taking the at least one measured variable into account. A plausibility check of the at least one measured variable is carried out, and a plausibility check of the calculation is carried out, for which purpose the electronic load distributor is used.

Abstract: A method for checking the behavior of at least one group of consumers in a motor vehicle. In the method, it is checked whether the at least one group of consumers behaves corresponding to a request to change their consumption, for which purpose the power consumption of the group of consumers is measured and compared to a modeled consumption calculated based on a dynamic model of the at least one group of consumers, at least one algorithm being used for the comparison.

Abstract: An integrated starter and on-board electrical system disconnecting module for connecting to a starter battery and to an on-board electrical system by a transducer is disclosed. A method for limiting the starting current in a motor vehicle and the use of the integrated starter and on-board electrical system disconnecting module in multi-voltage on-board electrical systems, in particular during a start-stop operation of plug-in hybrid vehicles and for hybrid on-board electrical systems, are also disclosed. The transducer can be connected to a starter circuit including the starter battery from an on-board electrical system side, via a starter control device and via an on-board electrical system disconnector. The on-board electrical system can be uncoupled from the starter circuit and the starter control device and the on-board electrical system disconnector are integrated in the module.