Pg 99 in my (MY 2016) manual. "After every 10 WIPES..."The headlight washer is an automatic system, that activates every 3rd or 4th (can't recall but it's specified in the owner's manual) time you use your windshield washers. It's a spray jet only, no wiper. ..
I interpret this to mean that even if you do not use the windshield washer spray, every 10 wipes of the windshield, the headlights are SPRAYED. If it required 10 SPRAYS of the windshield to activate the automatic headlight cleaning system, it would virtually never activate. Who sprays their windshield 10x? If you do, WTF are you driving through? <GRIN>