I have a 2002 C-Class. Approximately twice per month but at very random intervals, it suffers a total electrical shutdown. I am driving along, and suddenly speedo/revs/fuel drop to zero, wipers stop, indicators and lights stop functioning, radio goes silent - but engine carries on operating. I have not yet dared to try out the ABS etc in this situtation. After about
5-10 seconds, everything normally comes back to life, though this morning (while on the motorway) I had to pull over onto hard shoulder and restart the car to get everything working again.I have rung the MB dealer and they claim that they will have to see the car to diagnose the problem. But from previous experience with them, I know that they will just rip out all the electronics, replace everything, and then give me a huge bill. If it does not solve the problem, I will not be able to prove anything because the problem is not repeatable, and occurs only at random intervals.
Has anybody ever heard of a problem like this?