I LOVE my 2017 Prius v Four but I have had a real problem with liking the visibility of the road ahead from the headlights. IIHS rates it as "Poor" and, after more than a few years of driving it, I have to agree. After searching for help with this I finally thought I'd gotten a grip on headlight adjustment, but there was still a bit of confusion. I'd watched videos where between the bad video, vague explanations and the thick accents I gave up on that. Then there is the clockwise-counter-clockwise confusion which I hope this post will clarify. Adjustment is amazingly simple with a little understanding and explanation. The two photos below show the location of the adjustment on the rear of the non-LED headlight housings. These points are easily accessible. Below is a closer view of the adjustment often referred to as a bottle cap with a bolt head on it. If you use the 8mm bolt to adjust it you need to turn the disc (as viewed from the face of the bolt head) counter-clockwise to raise the beam, clockwise to lower it. If a phillips tip is used ( I used a #3, a #2 might be better? ) to make the adjustment the tip needs to be rotated clockwise to raise, counter-clockwise to lower the beam. Here's the tool I used, a speed wrench with an extended #3 phillips driver tip. I thought it to be easier and faster than a wrench or a screwdriver. This pdf link gave me parameters for proper adjustment: https://www.fhwa.dot.gov/publications/research/safety/humanfac/04148/04148.pdf (page 10) I hope to do the final adjustment tonight but it's not easy for me to find a spot that's dead level from the four wheels of the Prius to the point of measurement. Hopefully you can sort your way through this mess of messages and pictures.
