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Lighting Forum
Angel Eyes, DDEs, lighted rings, Clear Turn Signals, LEDs, Xenon, HID, or Bi-Xenon. If it lights up and you want to discuss it, post here!

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Old 06-25-2012, 12:08 PM   #1
MA330ci
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Headlamp controler Query

Hi. My left headlamp is out. Bulbs are new. Nothing fancy about it. They are adaptive (move with the car turning) Mechanic switched exciters/ignitors around and same problem. He says it's the control module. So I find one from KO online. "Part #63127189312-9. Control Unit for Adaptive Headlight Control (2 Per Car) NOTE: Requires programming after installation."

Is it this simple? Buy the module, have my mechanic install. Then I suppose I need to have it programmed?

A little nervous about this but I am loath to go to my dealer because I shudder at the cost.

Newbie here and appreciate the help.
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Old 06-25-2012, 06:26 PM   #2
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The ballast? Swap that to the other side as well to make sure that it's the problem.
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Old 06-26-2012, 10:45 AM   #3
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Jake,

Thanks for the reply. Is the ballast the same thing as : "Electronics box ALC uncoded Part No: 63127189312" (#17 in the diagram)?

Fran
http://bmwfans.info/parts/catalog/E4...ght_xenon_alc/

Last edited by MA330ci; 06-26-2012 at 10:48 AM.
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Old 06-26-2012, 11:01 AM   #4
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63127189312 is the "Control Unit For Adaptive Curve Lighting" as seen in the photo below.




If you have HIDs it's most likely the ballast, if you have ZKW headlights in the car it will look like this and can be found HERE:


If you have the AL headlights it'll look like the photo below and I have that ballast avaible HERE.



I highly suggest doing as Jake suggested and switching the ballasts just to insure there is nothing else wrong.
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Old 06-26-2012, 11:41 AM   #5
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ECS...

Many thanks for the helpful reply and pictures. Is there a way to know if the headlamps are ZKW or AL without taking the whole thing apart? It's pretty crowded and hard to see in there. Can I tell from the VIN or .....?

Feeling stupid but grateful,

Fran
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Old 06-26-2012, 11:44 AM   #6
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You should be able to inspect your headlight lenses and see either a ZKW or AL branding on the lens. It's going to be small but you can find it.
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Old 06-26-2012, 11:56 AM   #7
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Hey! Thanks a lot man!. I'll look tonight.
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Old 06-27-2012, 10:59 AM   #8
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I have the AL lights. The mechanic says it is a"big job" to change this part (remove both headlamps completely). To avoid doing this possibly twice, he suggests that we have the part available and ready to install at that time. Any thoughts on this matter would be appreciated.
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Old 06-27-2012, 11:03 AM   #9
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Headlight removal is not that big of a deal, you can easily do this yourself. HERE is a link to the facelift head light removal and below is a video showing how to remove the pre facelift headlights. Once the headlamps are out you have access to the ballasts.


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Old 06-27-2012, 11:10 AM   #10
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ECS - thank you so much!. I am grateful. One final question. Can you please explain the difference between "facelift" and "pre-facelift"? Thanks
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Old 06-27-2012, 11:15 AM   #11
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The E46 had a facelift in the 2004 model year, for the headlights the easy thing to look at is the shape of the turn signals. If they have a downward slant that's pre-facelift, if they have an upward slant that's a facelifted car. The diagram below should help you get the idea a little better, the headlights on the far right side that looks a little "funky" are the European E46 compact headlights.


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