The invention relates to a method for operating a sensor arrangement (2) in a motor vehicle (1), wherein



the sensor arrangement (2) has a central unit (3) and a plurality of sensor units (S1, S2, S3),
the central unit (3) and the sensor units (S1, S2, S3) are connected to a bus cable (4) and
via the bus cable (4) a communication takes place between the central unit (3) and the sensor units (S1, S2, S3) with the following steps:
alternately carrying out a power supply phase (E) and a communication phase (K),
supplying the sensor units (S1, S2, S3) with energy in the power supply phase (E),
repeatedly carrying out a communication cycle in the communication phase (K), having the following steps: sending a command (F1, F2, F3) from the central unit (3) to at least one sensor unit (S1, S2, S3), receiving a response (A1, A2, A3) of a sensor unit (S1, S2, S3) in the central unit (3), receiving a respective energy status information item (ES1, ES2, ES3) from all sensor units (S1, S2, S3) in the central unit (3) and interrupting the repeated implementation of the communication cycle in the communication phase (K) by a supplementary power supply phase (Z) if one of the energy status information items (ES1, ES2, ES3) originating from the sensor units (S1, S2, S3) indicates that the corresponding sensor unit (S1, S2, S3) requires additional electrical energy for continued operation. In this way, an effective method for operating the sensor arrangement (2) in a motor vehicle (1) is provided, in which a communication between the master and the slaves with a high bandwidth is normally possible.