Haha, I had this happen on my 190E 2.6 a couple of years ago. Turned out the battery was almost dead and caused this to happen. It sure made me scratch my head. Test your battery and replace if that is the culprit. I replaced mine and it never happened again. Good luck.
1994 C 280 117.5k, White (Good as new)
1997 Toyota Camry 149k Miles (Not so pretty anymore)
1990 190e 2.6 95k (Sold-Should not have)
1981 240d Stick ??? Miles...sold