S60 L5-2.4L VIN 64 B5244S6 (2003)
Ambient Light Sensor: Testing and Inspection
No diagnostic trouble codes are stored
Fault is permanent
NOTE: If the nightfall sensor is covered, the climate control module (CCM) does not receive any signals regarding light intensity, and the
brightness of the LED buttons cannot be regulated. These types of error are not included in trouble-shooting.
Defective measuring instrument
Defective nightfall sensor.