C180 Coupe (01) multiple light faults
 

I have a 2001 C180 Coupe and recently I have had a problem with the fault system. A while ago it would randomly tell me that the rear brake light was not working. Then the following day it would be fine. Recently, it reported that the rear left reverse light, rear left indicator, right tail light and fog light, 3rd brake light, and rear license plate lights are faulty. I have checked these bulbs and they are fine, I even replaced them but the fault is still showing and they don't work. I looked at the fuse section but it says that the fuses are 'electronic'. What the hell does this mean, and what sort of problem am I looking at? Cost?!!!!!! Please help!