Those short fuses might still be available, but if not you could always go with a BUSS fuse of the same length and amps.

You would need to glue the pointed ends of the blown fuses to the ends of the round BUSS fuses, so make sure you take that bit of length into account.

I have also taken the metal from a long fuse, bent it with some needle nose to shorten it, and mounted it on the short bodies. It works just as well.

You might also try the Mercedes dealer. Or perhaps a BMW dealer since they used the same type of fuses.