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.
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 .....?
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.
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.
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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