Just a note to you guys:
I recently had someone cut in front of me and my horn went "mewk"...
Looked around forever in the fuse boxes for a "horn" fuse in my 1998 c280 sport...
Guess it would have to been too easy to call it a F'in HORN, Mercedes decided to name it a "FANFARE", fuse #40 in the main box, 10 amp.
Anyway, thought it might save a fella or two a little head scratching if they have the same fuse map as I :-)
A.