Sensor system for a vehicle and method for monitoring a sensor

A sensor system for a vehicle, comprising:

• a first sensor configured to detect at least one collision-relevant physical variable and to output at least one corresponding first sensor signal;
• at least one second sensor configured to, independently of the first sensor, detect at least one collision-relevant physical variable and to output at least one corresponding second sensor signal;
• and
• an evaluation and control unit configured to receive the at least one first sensor signal and the at least one second sensor signal and to evaluate the at least one first sensor signal and the at least one second sensor signal for a collision detection, and wherein the evaluation and control unit is configured to use at least one second comparison signal that is based on the at least one second sensor signal of the at least one second sensor to monitor the first sensor, the evaluation and control unit configured to recognize that the first sensor is defective when:
• (i) at least one first comparison signal, which is based on the at least one first sensor signal, has a high signal value that is above a predefined first threshold value, and the at least one second comparison signal of the second sensor, used for monitoring the first sensor, at the same time, has a low signal value that is below a predefined second threshold value, and/or (ii) a deviation function generated from the first comparison signal and the second comparison signal is above a predefined third threshold value.