Long stort short.
I had some problems with the overload relay. I got a new one and it fixed the problem for 1.5min.
I took the car to our mb tech and he discovered the wiring harness going to the overload relay being completely eaten by battery acid
This happened in a W124. Im very very mad about the leaking battery. Few weeks ago I cleaned out the battery tray, it was full of the white crap. I had no clue that it also went through the wires and basically ate away the harness.
I know its a maint. battery, i filled it wit distilled water, but why did leak out so much, hot weather.
Im so pissed off, if I call MB they probably wont say much. But common a friggging battery leaking acid like crazy WTF!! WHY DID I BUY A MB battery for

To have a peace of mind, as it turns out my car almost went up in smoke
For the same $$ i could have gotten some quality main. free battery
More on this later