The headligh wipers only move once or twice, by the time you get out of the car to check, it's over. Best to have a friend to keep his or her eyes on to see if they move at all. And you need to use the windshield cleaning feature to activate it.
I checked my headlight wipers by looking at the reflection from my garage door windows. Or a shiny back end of a dark color van while waiting in traffic might work. Headlights on, then press the windshield washer. The headlight wiper only cycles about twice.
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