C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Car not starting

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Old Oct 29, 2021 | 02:34 PM
  #1  
Reddy324's Avatar
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Mercedes C200 2001
Car not starting

Hi, I have a 2001 C200 cdi.
After parking it last night, I tried starting my car today and it cranks but will not start. It sounds like it cranks empty (no fuel going to engine) and the fuel pump does not run when I turn the ignition to 2nd position or while cranking.
Warning Triangle sign, LIM and DTR lights are on.
Things I tried:
  • Checked fuel pump fuse and relay, both good
  • Checked voltage at fuel pump, 5 pin connector but 3 pins only on pump, no voltage present
  • Tried resetting the ECU
  • Checked all fuses and relays
Could there be an anti theft system preventing the pump from working since I have a problem with the driver-side door not locking sometimes?
I searched online and people say it could be the rear SAM, how do I check it?
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Old Oct 29, 2021 | 03:07 PM
  #2  
Russell Ormerod's Avatar
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Joined: Jun 2011
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From: Cape town
not a merc
Your first step is to connect a diagnostic tool and read faults. There are many reasons for non start on a diesel. I doubt very much you have a rear sam issue. If the car cranks then the anti theft is fine! If I had to guess then I would say cam sensor fault
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