Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
does the car start and run OK ?
if it does and you have no dash activity at all? With no warning lights or other illumination then then I'd say that the dash has failed or its main connector plug has somehow pulled out of the rear of the unit
if the car won't start then thats a different matter and you should then check for 12V at the ECU fuses under the hood
I'm assuming that the problem is the former so in that case I'd say that the dash will have to be sent off for repair
try this firm