I recently bought a c230 K. Included in the deal the dealer was too install xenon lights (not the projection ones, just the bulb, and wiring harnesses and all that). However I brought it home, and when I drove it at night the level of the light was lower the before. Anotherwards it's not lit up as far as it did before. I know from a previous car that there is a a height adjustment that you can do, on my old car it was just a screw you loosen to get more height. I popped the hood on this car, but didn't know where it was, anyone have any ideas, or is this even possible?

 

there is a vacuum adjustment wheel just beside the headlamp switch? that can adjust the height.

if none, there is something on the top of headlamp assembly to adjust it using 10mm socket or big flat screwdriver.