Crank sensor can go open circuit, car stalls, then it cools down and circuit comes back. car starts. when it goes, you get a crank no start issue, or it stalls while you are driving.

__________________
'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U