Abstract: A method for operating a drive device for a motor vehicle, the drive device has an exhaust-gas-generating drive unit, and by an exhaust gas probe an exhaust gas value describing a composition of the exhaust gas is determined, and for a plurality of systems of the drive device a state value describing the state of the respective system is determined, in each case as part of a system diagnosis. For each of the plurality of systems, it is defined in at least one system defect data set whether a system defect of the respective system affects the exhaust gas value. If the exhaust gas value departs from an exhaust gas range, the system defect data sets are put on a checklist of system defect data sets to be checked, and then, those system defect data sets for which the exhaust gas value is not affected are removed from the checklist.

Abstract: The invention relates to a vehicle having fail-safe internal data transfer. The vehicle comprises a vehicle body and a wired data transfer network provided on the vehicle body. Furthermore, network subscribers are provided on the vehicle body, which network subscribers are connected to each other via respective network nodes of the data transfer network. The data transfer network has a data-transferring ring wiring.

Abstract: The invention relates to a vehicle having fail-safe internal data transfer. The vehicle comprises a vehicle body and a wired data transfer network provided on the vehicle body. Furthermore, network subscribers are provided on the vehicle body, which network subscribers are connected to each other via respective network nodes of the data transfer network. The data transfer network has a data-transferring ring wiring.

Abstract: The invention relates to a navigation device comprising a turntable which can be rotated about an axis in at least two different rotary positions, in accordance with a rotary control signal. An inertial measuring unit is arranged on the rotary table which can be rotated with the rotary table. The quality of the measurement data can be determined by the initial measuring unit with the help of an evaluation device. When the determined quality does not reach a predetermined minimum quality, the rotary table rotates in the respective other rotary position.

Abstract: The invention relates to a navigation device comprising a turntable which can be rotated about an axis in at least two different rotary positions, in accordance with a rotary control signal. An inertial measuring unit is arranged on the rotary table which can be rotated with the rotary table. The quality of the measurement data can be determined by the initial measuring unit with the help of an evaluation device. When the determined quality does not reach a predetermined minimum quality, the rotary table rotates in the respective other rotary position.