Thanks for the information . I looked for a module like the BMW type in the under hood fuse housing. There is nothing that lookes like a module.

There is a small relay at the front and a few multi pin wire connectors and then the fuses.

Any pointers to the location of said H/L relay ?.

"2001 E320 W210 HEAD LIGHT OUT
REPLACE BULB BOTH SIDES H7 , ALSO FOG LIGHT OUT, CLEAN PLUG IN CONTACTS AND NEW BULB, REMOVE TWO BOTTON PANELS "

RAYMOND...is this suggesting I replace both bulbs ? Need a little better explanation of what this means.

The drivers side head lamps, hi and lo are all operational.