I noticed the driver's side headlight was not working on my 98 ML320.
I tried instaling new bulb, stiill no luck.
I swaped bulbs between left and right side, driver side light sill out.
I examined fuses, both are good and even tried switching fuses.
Turn signal, parking, and high beam lights function on both sides.

Any ideas what could be the problem ?

Does anyone know if the combination switch has a separate circuit for each headlight or one switch to control both ?

Thanks