How do you turn on Volvo s80 headlight wiper?

To turn on the headlight wipers on a Volvo S80, first ensure that the headlights are activated. Then, pull the wiper stalk towards you (the same stalk used for the windshield wipers) to activate the headlight wipers. They will operate in conjunction with the windshield wipers when the headlights are on and conditions require cleaning. If the headlight wipers do not activate, check that the wiper system is functioning correctly and that the wiper fluid reservoir is filled.