Volkswagen Workshop Manuals
Passat Sedan V6-3.6L (BLV) (2008)
Sensors and Switches > Sensors and Switches - Lighting and Horns > Ambient Light Sensor > Component Information > Testing and Inspection > Page 771
The decrease in light is measured and the headlamps are switched on.
Turn light switch - 4 - to "O" position - 1 - and switch ignition off.
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