What makes the headlight wipers run? I would imagine it's turning on the windshield wipers, but I have never seen the headlight wipers run on my 01 s40.

(I unfortunately only have one left. Someone thought it would be funny to break one off and let it hang by the black hose. Probably the same person who broke off my side mirror which was facing the sidewalk at the time. I live in a "great" area with "great" people who love to do "great" things to strangers' cars.)

 

They are activated by the windsheild washers.

 

Ah, makes sense - if the windshield is dirty enough to need it, the headlights probably are, too. Thanks, Tech.

btw, I read in a post that you work with Volvos all the time, do you work at a dealership or a volvo-specific repair shop?

 

Volvo specific shop.