2009 Mercedes Bluetec Low Bean Light bulb uses the same bulbs used on fog lights? What is the light number or model?
Are those lights Xenon or not?
Should be replaced in pairs?

This is for a E 320 Bluetec Sedan

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Nyck - TX - USA

What model???

Sixto
98 E320s sedan and wagon

I am sorry. It is a E320 Sedan

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Nyck - TX - USA

There’s halogen and xenon option. You have to figure that out yourself. If halogen, it’s an H7 bulb, different from H11 fog light bulb. If xenon, I’m pretty sure it’s a D1S bulb. You can can’t swap halogen and xenon. Only the correct one will fit the housing. There’s usually a high voltage warning decal near the headlight if it’s xenon.

This should help - https://www.pelicanparts.com/techarticles/Mercedes-W211/95-BODY-Headlight_Replacement/95-BODY-Headlight_Replacement.htm

Sixto
98 E320s sedan and wagon