Driving a S320. Temp higher than 80 car wont start. when cooled starting again

Hello, This may be caused by a failing crankshaft position sensor. Hot starting may be more difficult, yet it won't set a code or illuminate the check engine light. The part is relatively inexpensive, but you'll want to get it properly diagnosed to be sure. http://repairpal.com/mercedes-benz-within-10-miles-of-hadley-massachusetts-01035