Welcome to Club Lexus, the world's largest and most active online community of Lexus owners and enthusiasts.
You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Club Lexus community today (click here to register)!
The complete headlight HOW TO clean DIY + projector refinishing
ANY SC owner who has headlights over 2 years old needs to be concerned with the condition of your projector lens. This lens is EVERYTHING to the headlight. If your lens is dirty from impurities gathered from years of use, your light output can suffer as much as 40%.
The reason for this is the simple fact that this little piece of glass must be pure and clean to focus light in a beam. If dirt is present on your lens the light will scatter in all directions which will not only cut your light output as much as 40%, but it will also affect your cut off on your beam and leads to blinding oncoming drivers from all the light being scattered everywhere.
I know what you are saying....... "My headlights are nice and clear". That's great.... but what about your projector glass??? The nice clear lens means nothing if your projector glass is dirty, folks this is going back to simple physics. Your objective goal here is to focus a beam of concentrated light through the purest glass you possibly can so no light is shattered in the beam or reflected and dispersed as noise. When this happens you are wasting light!
If your headlight is over 2 years old you have dirt accumulated on your projector. You are losing light, your cut off isn't what it should be, and you are potentially being a nusiance to other drivers from shatter light dispersion. Wanna know how to properly check your projector? Check this out:
GO OUTSIDE WITH A FLASHLIGHT and shine it into the projector from a few different angles. Is it cloudy? dirty? Can you see contaminents on the glass? Sure you can....... let's fix it!
Here's what it looks like right now:
YIKES! Look at all that nastiness on the projector glass. When you get it apart it is going to be a lot more obvious. the following two pics show not only how dirty my hands are by now , but also how nasty this glass is when you try and look through it..... now remember..... this is supposed to be PURE clear glass for the light to travel through.
OK, that is obviously not going to work. Look at how much light you are loosing just trying to look through it. See all that glow? Thats light being refracted in the glass and dispersed in the wrong direction.
Well let's get started! Pop them in the oven for about 3 minutes @ 300 degrees to loosen up the adhesive that holds them together.
This ad is not displayed to registered members. Register your free account today and become a member on Club Lexus!
Remember to use gloves! Bring them out and use a flatblade object to pop them open. A putty knife does well because it disperses the force over a large area and keep you from having 30 spots where you pulled on the soft black plastic.
It's not just the projector that is dirty, everything is dirty. It's hard to tell sometimes, but if it doesn't look brand new........ it's dirty. Here's how dirty the average headlight is inside:
As you can see this is not a good environment for this sensitive piece of glass. This needs to be cleaned right away.
Remove the two screws that hold the projector glass in place. I choose to loosen one and remove the other - they are a bit hard to turn because they are set in metal and there is rust present from the years of moisture.
When I had the unit apart I thought I might could come up with something crafty for the city light, but to no avail........ I put it back in.
This lens on the left (corner lens) pops out with three little catches on it. remember to remove it and clean both it, and what's behind it.
Now it is time to direct your attention to the projector lens. I chose to buff the glass to a nice shine to get the impurities out and make certain I have a nice clean smooth surface to blast light through.
NIIIIIIIIIIIIIIIICCCCCCCCCEEEEEEEEEEEEE. Look at that!
Now you can get your lighting situation under control. Bolt the projector glass back into the headlight. Stand back and look at it now! It's like brand new and you'll know immediately how much of an improvement you have made. Good clean glass does not reflect light through out it. you should be able to take a high intensity flash of the camera and look directly through the glass with no problem. Then you know it is clean, when it almost ceases to exist and you can look directly into it.
Look how nice and clear we have it now You remember before, right?
Looks nasty as can be in comparison, yes? You now can see how much clearer the glass is and how much better your headlight can project light now. It will be more accurate, and more defined + you will have up to 40% more light concentrated in the right spot!
Now go ahead and buff your face lens also. You might need to sand it lightly with some 2000 grit sandpaper first, then buff. Depends on how bad off your outer lens is.
Next I'll get into resealing the unit. That will be tommorrow and I'll link the two threads together if I make a different thread.
Why thank you I'll continue tommorrow in a separate thread and link it on how to reseal.
If your headlight are over two years old, look at how nasty the projectors are and how much light you are loosing! If you do one mod this year, make it this one because if you add HID's like some, you are only making the problem WORSE.
Check out that clear lens I am going to do some light sanding to remove the fine hair line scratches from the years of abuse, but then I'll rebuff and it will come out just as clear
What did you use to reseal the pieces back together? Where are the vent holes in back?
Dude, this post is directly up from yours 2 posts.
Quote:
Why thank you I'll continue tommorrow in a separate thread and link it on how to reseal.
If your headlight are over two years old, look at how nasty the projectors are and how much light you are loosing! If you do one mod this year, make it this one because if you add HID's like some, you are only making the problem WORSE.
Thankfully I'm not tired yet (3:20am) so I will continue and finish the job. (don't get ahead of me)
Let's get finished with this thing! (so mongoose can rest easy)
Here's how your projector and reflector should look now after your cleaning. You can actually see the pool table through the projector! Now, that's a clean piece of glass
Dude, this post is directly up from yours 2 posts.
Thankfully I'm not tired yet (3:20am) so I will continue and finish the job. (don't get ahead of me)
I actually posted somewhere in the middle of your write-up, but somehow my post disappeared. I must have missed the "tomorrow I will..." part of your post.
The complete headlight HOW TO clean DIY + projector refinishing
, but also how nasty this glass is when you try and look through it..... now remember..... this is supposed to be PURE clear glass for the light to travel through. 
Pop them in the oven for about 3 minutes @ 300 degrees to loosen up the adhesive that holds them together.
Great DIY!!!!! 
Linear Mode
