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DIY: Changing Xenon Bulbs on all e46 models (except 04-06 coupes)

186K views 73 replies 38 participants last post by  sillieidiot  
#1 ·
Ok guys, I figured I would just make a DIY for this since I was making a DIY thread on a different subject. Plus I was getting questions on how to do it, and I guess it's hard to picture it for some people. I couldn't do a video this time, since the headlight is actually outside of the car. So just use this as a guide/visual aid to what you'll be trying to do. It's rather easy.

***Note: Follow this at your own risk. I am not liable for any damages or injuries that may have resulted or caused by this DIY.***

Tools needed:
- A pair of brand new bulbs (d2s is the size)
- Latex gloves (or any other kind) - It's not really needed, but I would have it to keep you from accidentally touching the bulb
- Small hands LOL (if you don't have small hands, i would consider moving the headlights forward or take them out to make life easier on you)

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First, you would want to take off the plastic back cover that keeps the dust and other harmful stuff out. It's just held on by a tab and 2 little prongs. If you were doing it on the car, you would push down on the tab, remove it away from you, and pull up.

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Here is what the cover looks like:

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Next you would remove the igniter. It's a black/red piece connected by a couple of black wires (which are connected to a module inside the headlight). To remove, all you need to do is twist it a quarter turn to the left (or to the right if you are working on the car). Then pull straight out.

What it looks like from the back:

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From the top:

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Next would be to remove the bulb holder (which is a black plastic ring pretty much). Same thing with the igniter, quarter turn to the left (or right if you're working on the car), and then pull straight out while holding the bulb in place with a finger. Else you'll damage the bulb or drop it.

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As you can see, there's the word "Top" on the bulb holder to tell you which way the holder should be facing when you put it in, so you don't have to guess.

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To remove the bulb, just pull straight out, carefully else you're going to break the ceramic return wire (which will greatly reduce the bulb's life). There's very little room in there, so be careful.

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Well there you go, we are halfway done. Most people will just stop their DIY here and just say do the reverse. It's not really a complete DIY i guess lol, but I thought I'd just keep going for the sake of answering questions that will arise from that.

To put back the bulb, carefully push it back into the headlight. There are 2 notches (one is a square, the other is circular) to line it up to. Also make sure that the return wire (the ceramic tube you see running along side the bulb) is facing down.

Here's a picture of the projector and the 2 notches:
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While holding onto the bulb with a finger (like when you took out the bulb holder earlier), put the bulb hold back in. Make sure the word top is actually on top. There are slots here for the bulb holder to go in, so when you get it in, you will feel it come down, then turn it right (left if you're working on the car) and you will feel it "click."

I couldn't take a picture of that like I did when taking it apart, but here is what it should look like when you're done:
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Next push the igniter back on. You probably already noticed it, but the igniter itself has some slots/notches that go onto the prongs on the bulbs. push that on, and turn it right (left if you're on the car), and it should click into place.

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Finally, put that dust cover back on. Slide the 2 prongs into the slots on the headlight, and click it in. And you are done.

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You can thank ASAed330 for the DIY. Even though he didn't ask for it LOL
 
#8 ·
^ you should probably look at my other prefacelift one (the one showing how to take apart the headlight). the high beam side of that one will help you with taking off the bulb holder. you will still need to modify the bulb holder so that the wires for the H7 HID bulb can pass through.
 
#11 ·
pretty much all the other e46 models are the same, coupe or sedan. the facelifted coupes, however, are slightly different. all it is, is that the cover is different, and how the ignitors look. the movement, procedure is pretty much the same. i just did this DIY since people kept asking me what it looks like and stuff like that when i keep telling them it's the same lol
 
#22 ·
ok so i did the drivers side bulb in like 10 mins... or less.

the passenger side took me 2.5 hours!!!!!!!!! wtf?!
not only was the damn cover so hard to remove, but whole ballast/bulb complex was totally different. what a pain in the ass.
 
#23 ·
Nice Write up. I just purchased an 04' M3 with after market 8000k lights. When I am parked in front of a wall the left head light looks more focused, than the right. Is there a way to adjust that? The previous owner said that he put those bulbs in about a month ago. keep in mind both have the same output in color, just not as focused. any suggestions?
 
#25 ·
when you say more focused, do mean more intense? because i can't see how one can be more focused. unless of course, when he swapped the bulb, the bulb wasn't properly secured.

other than that, i would say that the headlights are not aimed correctly.

or he got used bulbs and one is dying already.
 
#32 ·
d2s = xenon bulbs for xenon projector type setups. d2r = xenon bulbs for reflector based xenon setups (i.e. 2000 is300) there are other d series bulbs too, but i wouldn't touch them since they don't work on our cars.

the price does reflect bulb quality to an extent. but it's not entirely dependent on it, it's more dependent on the brand. you want to stick with OEM brands like Sylvania and Philips, but there are other good brands like GE, Hella, etc. Philips being the top of the line.

for all other no-name brands, just go with the cheapest bulbs. they are all the same, and their quality sucks. the color does not match the advertised color, you lose lumens faster, they typically last about a year (OEM or other well know brands last about 5+ years).

usually OEM bulbs are around 150-200 a bulb. but you can get them else where for less. depending on the place it could be 150-300 for the pair.