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1. A steer-by-wire steering system for a vehicle, comprising a steering wheel, at least one sensor for capturing a steering angle of the steering wheel, a processing logic unit for determining a wheel setting angle requirement on the basis of the captured steering angle, an actuator unit for setting a wheel setting angle at wheels of the vehicle according to the wheel setting angle requirement determined by the processing logic unit, a steering unit comprising a steering actuator for applying a torque to the steering wheel, wherein the steering unit is configured to determine a steering angle of the steering wheel on the basis of a position of the steering actuator, wherein the steering unit provides redundant steering angle detection independent from the at least one sensor, wherein the at least one sensor is electrically connected directly to an vehicle electrical system and is supplied with electrical energy via the vehicle electrical system, wherein the processing logic unit is configured to determine a difference between a steering angle of zero measured by a position sensor and the steering angle measured by the at least one sensor when the vehicle is started, store the difference, and add the difference to subsequent values measured by the position sensor to determine an absolute steering angle.
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