You mentioned MAS and the fuel pump relay in parentheses...unless I'm absolutely incorrect or you have a pretty exotic MAS unit, the fuel pump relay is a separate component having nothing to do with the MAS.
The MAS may affect performance and possibly set off a CE light, but wouldn't contribute to the no-start issue.
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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
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