Abstract: In a method for operating an electrically adjustable vehicle seat which has at least one electrically adjustable upholstered seat element and a sitting weight measuring device for sensing the weight of a vehicle occupant sitting on the vehicle seat, prior to an initial sensing of the weight by the sitting weight measuring device, the upholstered seat element is automatically moved into a measuring position. An adjustment range of the upholstered seat element is predefined as a function of the current sensed weight value.

Abstract: In a method for operating an electrically adjustable vehicle seat which has at least one electrically adjustable upholstered seat element and a sitting weight measuring device for sensing the weight of a vehicle occupant sitting on the vehicle seat, prior to an initial sensing of the weight by the sitting weight measuring device, the upholstered seat element is automatically moved into a measuring position. An adjustment range of the upholstered seat element is predefined as a function of the current sensed weight value.

Abstract: In the case of a process for monitoring the operability of a weight-sensing system in a vehicle with at least one force sensor (2, 4, 6, 8), the weight-sensing system emits a warning message when a threshold value for the force acting upon the force sensor (2, 4, 6, 8) is exceeded, which warning message points to a possible damage to the weight-sensing system. This measure ensures a reliable detection of a possible failure of the weight-sensing system.

Abstract: The method for recording and monitoring of a partial space, specifically for determination of space occupancy in a vehicle and therefrom derivable activation and/or switching of accessory devices provides for the radiation of ultra sound from a sensor (5) with transmitter and receiver in the direction of the partial space. The return beam signal supplied by the receiver is passed to an evaluation unit and analyzed. Dependent thereon, accessory devices can be activated and/or switched. The sensor for the partial space (12) employs several transmitters (6) and several receivers (7). The return signals are recorded with respect to travel time difference, thus with respect to distance and/or with respect to signal contour determined by the amplitudes and evaluated with respect to object contour in the partial space (12).