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I have a Mercedes Benz class B 180CDi from year 2009.

I ordered a D2S High Intensity Discharge tube with a note that it should be compatible with my car.

The seller answered that I should order D1S discharge tube.

So I cancelled the order.

Is he true that I cannot use D2S with my car?

1

This is what you can do ... The model of the headlight might be on the discharge tube itself. I had the problem with my vehicle where I ordered what I thought were the right replacement bulbs for the fog lamps (H7) and found them to be the wrong ones. I went and bought another set (H11) and they were wrong as well. I took the lamp out and discovered they were actually H8 bulbs as it was printed right on the bulb base. Anyway, it could be printed on yours as well.

Second thing (which might actually be the first place to look) is the owners manual. They might have the model listed there.

Looking online at the difference between the two, they are physically different. The D1S has a square metallic base with the connection going out the side of it. The D2S has a round base with the connection at the end (bottom). Here are some pictures for your viewing pleasure:

D1S

D2S

From the looks of things, you want the D2S, but make sure before you buy. Remember, you want to replace these in pairs so the color will be the same. Also, when replacing, wear clean gloves (like nitrile or cotton if you can find them). If you get oil from you fingers on the bulb (or any other contaminant, you can kiss those bulbs goodbye. Their life expectancy will be GREATLY diminished.

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It depends which headlight system you have,

if your dipped beams are xenon and high beam use H7 socket bulb, you should buy D2S,

D1S is designed for bi-xenon headlights,

I am sure you know what you have. I hope it helped.

Boris

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