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E90 Xenon Headlight Disassembly and Clean
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11-04-2020, 01:50 PM | #1 |
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E90 Xenon Headlight Disassembly and Clean
Hi All,
On the weekend I'm going to crack open my xenon headlights with a heat gun and some careful prying, when I bought the car I realised after a while that the tabs for the headlight rear cover was broke in a few places and dirt was inside the lense as well as the lenses themselves being scuffed and discoloured so they have to be done... Got some Reemo High Performance Butyl to reassemble the lense and a heat gun to separate the lense and also a meguiars headlight restoration kit but I thought it would be worth asking if anyone has any tips? Side note, is there a cheap conversion to go from D1S to D2S? |
11-05-2020, 04:53 PM | #2 |
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Only tip is to go gentle and slow with the heat. It’s very easy to get over excited with heating to try and speed up the process.
As for the conversion, I came across this a while ago but not really cheap so to speak with shipping and tax etc: https://www.theretrofitsource.com/mo...E-R?quantity=1
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11-06-2020, 11:52 AM | #4 | |
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11-06-2020, 01:49 PM | #6 |
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If you are going to the trouble of removing the lenses from the housings, surely its worth putting new lenses on!. Think they can be had for very reasonable money, although non genuine I guess.. Take plenty of pics, and feel free to do a step by step guide for others to use.. 😉 lol. Good luck.
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11-06-2020, 02:28 PM | #7 | |
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I could probably do something like my other thread with the Valve Cover removal and take pics and do a write up afterwards https://www.e90post.com/forums/showthread.php?t=1491121 Knowing my luck ill be like "and carefully pry at the lense taking extra special care so you don't crack it.. just like I've just done" : |
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11-07-2020, 02:24 AM | #8 | |
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I did wonder about the reason for the conversion but yeah guess if the price in bulbs is significant enough then could be worth it. Although I personally would prefer to keep with the original fitment as most likely you’ll only change them once.
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11-08-2020, 04:01 AM | #9 | ||
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And FML it would be wet today when I want to start on the headlights : |
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11-08-2020, 08:23 AM | #10 |
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Na peeps, why is it that my headlight has to be "special" video after video of a lense replacement I see the preliminary step to remove the screw(s) from the housing.. Yet mine doesn't have any exterior screws, instead it appears to have two screws inside of the housing on the top of the lense.. Like these screws are on the inside of the headlight.. Am I missing something here?..
Update So, I decided to contact "Keep Your Car Safe" because they quite literally specialise in custom head lights and disassemble these day in, day out (link below) https://www.facebook.com/KYCS.UK/ So it turns out my PRE-LCI Xenons are one of the more difficult ones to take apart because of the "permaseal" that's used. Usually, on the headlights from the E92 and others, you will see people using a heat gun to soften the seal, but this permaseal (from what I've read) has a melting point of 500 degrees, so heat doesn't actually achieve anything other than softening the plastic. What I found was, there's two methods which are: 1) Heat the plastic up enough to bend the plastic lip up and then dig under the lense to try and maintain an OEM look but much more difficult. 2) dremel the lip completely off and then use a razor to cut the permaseal away from the lense and housing which appears tobe a favourite as its very quick! The lense can still be installed again with Butyl because it will still have a lip to slide onto and the benefit of the second method (other than it being much quicker) is that one the lense is installed again with Butyl it becomes like any other lense where you can heat and pry. So yeah, nothing to show at the moment but I'll get myself a dremel and maybe some M badges and possibly some LED angel eyes and then have another go next week. |
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11-08-2020, 03:09 PM | #11 |
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Xenon bulbs as you’ve found generally last for many years. You’d be a bit unlucky to swap them out for new ones and have one go again within a couple of years.
Good call on calling Simon. He does know his stuff and is very helpful. Not ideal being permaseal but not many real options for splitting them other than dremel etc.
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11-15-2020, 02:17 PM | #12 |
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OMD, what a nightmare it's been. I'll just chuck a couple of pictures up and then once I've put the headlights back on tomorrow and seen if any condensation occurs I'll update the thread. I've spent all weekend on one headlight so when I come to do the other one I might do a video.
[IMG] View post on imgur.com [/IMG][IMG] View post on imgur.com [/IMG] |
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11-30-2020, 03:14 PM | #13 |
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It condensates, I will have another go at it though. The problem is, when I placed the lense back onto the housing with the heated butyl on the housing lip, instead of a thin layer of butyl remaining under the lense it just pushed the butyl to the back of the housing. The next time I do it I think I'll apply the butyl to the lense first and then push it onto the housing.
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12-13-2020, 01:39 PM | #14 |
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if you get condensation you can add the small bags of silica gel you get in new shoes ect, and stuck it to the back on the bulb cover and refit the cover..... that sorted mine for quite a while
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