D'oh! How to change headlight bulb in C230? - Mercedes-Benz Forum
 
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post #1 of 6 (permalink) Old 12-28-2011, 12:37 AM Thread Starter
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D'oh! How to change headlight bulb in C230?

It's a 2000 C230K. Got the bulb, a stock Sylvania C7.

Removed the black plastic cover. Disconnected the wiring harness.

Then what? What to push/pull/or twist? Nothing seems to make the old bulb come out. What am I missing? Even had a friend come over to help, just couldn't figure it out.

Scratching head.....
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post #2 of 6 (permalink) Old 12-28-2011, 01:40 PM
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I've attached some scans from my haynes manual.
Did you mean that it's an H7 bulb, by the way?

The trick is there's a metal clip that you squeeze to release the bulb. In the document I attached, the low-beam bulb is referred to as "dipped-beam." I think it's #7 on the diagram.

When you replace it, be really careful not to touch any part of the bulb-glass, otherwise you'll shorten the bulb's life-span.
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post #3 of 6 (permalink) Old 12-28-2011, 04:27 PM Thread Starter
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Thanks for the tip. Yes, it's an H7 bulb. I was thinking about the next Corvette.

However, those pictures don't look much like my headlight assembly. I don't have two covers, all I had to do was remove the outer black plastic cover, and I had access to wires, connectors, etc. Not quite sure what they mean by inner cover. And I can't locate any clips to squeeze or rotate.

Back to the shop, I guess.
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post #4 of 6 (permalink) Old 12-28-2011, 04:45 PM
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By inner/outer I think that they mean "as viewed from the front of the car."

One cover (large) is for the low beam headlamp, fog & parking lamps. The other (smaller) is just for the high beam headlight. The bulb is held in place with a retaining clamp.
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post #5 of 6 (permalink) Old 12-28-2011, 06:32 PM
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Well, let's see if we can figure this out here, before you go to the shop. Bulbs are not difficult to replace, so you shouldn't have to pay to have it done. But if you do have to go to the shop, pay close attention to how they do it so that next time you can do it yourself.

Anyways, I took a picture of what things look like in my 2000 c230K. I believe the top bulb is the one that we're looking to change. Just pull the wiring straight off. Then in my car, you push the clip in a little bit and either to the left or right. I forget. Once the clip comes out, the bulb will just pull straight out and no force is required.

If this doesn't help, can you take a few pictures of what your assembly looks like and then we can get a better idea? You may have a different bulb retaining device.
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post #6 of 6 (permalink) Old 12-28-2011, 07:15 PM
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The clip is a piece of spring wire. It is actually hooked in there. You push it in, then while holding it in swing it left or right away from the hook, then it will swing out and release the bulb. It can be complicated when you first do it, in fact many people think to remove the screw that holds the clip in place. That will get it out, but its not the right way to do it.
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