Interior light sensor

Fig 1: Communication Diagram - Interior Light Sensor

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The sensor that measures the light intensity in the car is integrated in the SID unit. The measurement range is 0-1200 lux.

The SID unit uses the value to calculate the appropriate display lighting. The value is output as bus information "INTERIOR LIGHT INTENSITY" in lux.