I am guessing you mean a W203 Coupe?

The brakes and clutch share the hydraulic fluid,

The clutch slave cylinder should have a bleed screw and probably a dust shield on top. This should all be located on the bell housing of the transmission.

mercedes does recommend pressure bleeding, so you'll need a pressure bleeder that will have an adapter that connects to the brake reservior.

I've never done the job on a mercedes.