ok, and nothing is working...well, you have to have the codes checked to see if they are real, and cleared if they are not.....not sure if this is something an auto zone could help you with as far as checking the codes, and clearing them...won't hurt to ask, if not, then an MB dealer in your area...doubt if you hurt anything, but something is throwing those codes, and something has to be disconnected for speedo, odo not to work...without looking in there, I don't know what else to tell you at this point...