Also do a search on "OVP" or Overvoltage Protection Relay...a faulty one is known to have caused "hot start" problems (i.e., hard to start when engine is warm)...
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car