Any luck with headlight upgrade

Discussion in 'Gen 3 Prius Main Forum' started by Frontporch, Mar 17, 2025.

  1. Frontporch

    Frontporch Active Member

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    I need to enter the headlight war with some firepower. My gen 2 with HID lights was pretty nice but my current gen3 seems dim by comparison. It s there a recommended headlight, led or other suggested for the gen3. I have a 2012 package 4 and not sure what lights are in it now.

    I am normally pretty considerate of other drivers but when my headlights are on I see a shadow of my Prius from the SUV behind me. I need to upgrade for my own safety
     
  2. Tombukt2

    Tombukt2 Senior Member

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    H8 and h11 Aux beam S series fanless . No whining at lights . 5 yrs in on 3 cars . When you fit LEDs you need to crank on the adjuster screw righty tighty about four turns or eight half turns depending upon how you count that will bring your cut off right up on your garage door then you set that at the proper height whatever it is I don't remember 31 and 1/2 in or something like that but when you put the initial bulbs in at least in the low beams it will look like you're trying to light up the whole area in front of you no cut off now crank down on your adjuster and you will literally see a line show up on your garage door all of a sudden now you set that at height then go do the other side The high beam obviously is not mission critical You don't do anything with it
     
  3. Frontporch

    Frontporch Active Member

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    Looked on amazon and auxbeam kept
    Coming up as fog lights. Can you expand if h8 and h11 are two different bulbs?
     
  4. Tombukt2

    Tombukt2 Senior Member

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    If you own a generation 3 one is the low beam and one is the high I'd have to go out and look at cars I don't have here right now to tell you that I can only look in my history and tell you what I bought from my persona my solar roof car which is a 10 and a 13 and they're different from the H4 bulbs in the generation twos 04 to '09 I thought you were working on a generation 3 that generally takes h8 and h11 bulbs I thought my memory could be fooling me You would know because you have a car sitting in your driveway I ordered from the company stated above I'm not sure why you're looking at fog lights but whatever h a and I guess h11 in other cars have been used possibly as fog lights I think every bulb on the planet probably has at one point or another ones that go in headlights I mean I don't think they make H4 fog lights as they have two filaments usually fog lights are single filament on or off I don't think that makes any difference because one's going to be a high and one's going to be a low beam separately not in one housing that's how the Gen 3 lights are made in the US I thought but in my car that was sitting outside no longer is thank God had h8 and h11 in those fake low beam projector housings that came on the car because I put them in there and they were from the company AUX and they were the S series at the time was the s1 series because they just came out now they're probably up to the s4 5s That's their big heat sink fanless no whining at a stoplight top of the line bulbs for lighting by this company I don't know anything else about any of the other bulbs or companies or any of that I own these I don't own all the others and the fake projectors you should be okay just sticking them in in other vehicles folks have noticed cranking righty tighty and lifting the housings up with their adjustment brings the cutoff right up on the garage door at the proper height pretty quickly other people have an adjusted the projectors at all and generally don't even notice because they're usually not coming from cars with projector headlights and very sharp cut offs and all of that they usually coming from Corollas and Yaris and sentras and things
     
  5. Frontporch

    Frontporch Active Member

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    I had a gen2 with HID, but current car is gen3 Prius IV. I will do some more digging. I see on the auxbeam site you can buy an entire package for the car with all lights. There was something for headlights and it looks like it may be more than just a quick replacement. Something about CANBUS... not sure. will try to narrow this down and find a source/price.

    Also saw comments about issues with the width of the projected beam. That may be why many of the bulbs listed on Amazon for Auxbeam describe them as fog llghts.
     
  6. Tombukt2

    Tombukt2 Senior Member

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    If your car doesn't have LED lights which I don't think it does at least headlights when you put in LED headlights in some cars it can wreak have up on the can bus I don't think it does in the Prius because I put them in my generation 3 which has the single fake projector and the wide open high beam and the little 194 orange or whatever color bulb you put there and there was no problems with the AUX beam s1 series and I believe it was h8 and h11 I don't have the owner's manual and thank God the cars are gone those lights were bright and high and low beam and never a problem One car went 396,000 miles with them on there never replaced or touched brightest seemingly as the day they were put in but I have no way to verify that the person just took both of those generation 3s drove them on the trailers and took them away in the headlights were still working just fine No fans no whining no funny business I'm not sure that I would go the whole route with the bulb kit for the car until I knew what bulbs we were talking about because they don't have the trunk light and so on and so forth
     
  7. glaucun

    glaucun New Member

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    Good luck with finding headlights.
     
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  8. Tombukt2

    Tombukt2 Senior Member

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    No luck needed at all Just order the right bulb numbers for the sockets you're trying to replace the bulbs in It's pretty straightforward That's why they have those numbers h4h11 h8 etc so that there's a standard that you can affix to your light assembly and drive along.
     
  9. Frontporch

    Frontporch Active Member

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    looks like the references to these lights being sold as "fog light"s are common because most of these LEDs don't have approval to be used as a headlight. The lack of approval may be because of brightness or beam pattern, not sure. I wasn't under the impression that anyone was regulating this based on how blinding some new cars are.
     
  10. ChapmanF

    ChapmanF Senior Member

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    For LED retrofits, the holdup is the approval of new standards showing how to tell the good 'uns from the bad 'uns. Until there is a standard adopted, the status quo is that none of them have street-use approval in the US.

    I've posted elsewhere with links to the progress that was being made on a testing and evaluation standard. Seemed like there was good progress pre-COVID and a bit of a COVID setback. If there's now anything holding back completion of a standard shortly, it might just come down to whether there are people still working at DOT with time to spend on it.
     
  11. Tombukt2

    Tombukt2 Senior Member

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    All you got to do is use good ones that have some engineering behind them and realize when you put them in your halogen housings you're going to need to crank them up about four turns. So far on all the generation twos this is all that's been needed when I put them right in and sit in front of the garage door look out in the street with the headlights on looks like I'm looking into nothing as soon as I raise the adjusters up righty tighty and put that cut off line that shows up on the garage door at the right height with the car level everything seems fun and nobody's been flashing or doing anything since . And I can tell on the unadjusted work vehicle versus the two other cars with them installed and adjusted when I'm driving the cars I can tell the difference. Not approved for road use wonderful everything at the part store is not approved for something but it's all sitting there for sale ready to go in Europe you are can be taken off the road for the nonsense it goes on in the US so there's always that My German friends come here and they're amazed what goes on with cars without any consequence at all.