I have a similar situation. 2001 ml 320 , engine turning over but not starting., MB Road service came and jump started the car and the car started. I was told the battery was weak. 2 days later same problem , no start but turning. MB service came and replaced battery they say was weak, however, car turning but not starting. Tech says fuel pump, sensor, bring to dealer HA HA. I have read these posts , am open to suggestions. which crank sensor goes bad , front or rear?
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