i have a 2000 e-430 it turns off from time to time then i have to wait 5-10 min then it will turn on again, i took to the mechanic they hook up the computer and it said nothing just like the one in car, no codes. one time it was parked for over 2-hrs and it did not want to start. had to leave it over 4-hrs then it started. can some help . guillermo
ps. getting worse this started about a month ago

Replace the CPS. They most of the time do not throw a code. Also fail when warm and then will allow it to start when cool but may stall again after the warm up. Had you gone to a dealer and not some half assed indy they may have caught this.

Ditto