Front Sam Replacement

Josep Technical Support Specialist Commack, New York Posted   Latest   Edited  
Resource
Electrical
2008 Mercedes-Benz C300 3.0L (272.947) 7-spd (722.9)
No Crank After Installing New Front Sam Control Unit
No Crank / No Start

When installing front SAM in Mercedes W204 up to 2010 model year, you need to make sure the parts dept includes “jumper” wire Part number A… 

This harness needs to be installed prior to completing component install. You will need to jump from connector 6, pin #4 to connector 2, pin #12 

+3
Raymond Diagnostician
Phoenix, Arizona
Raymond
   

More specifically Install electrical wiring harness for actuation of starter relay between connector 6I pin4 and connector 2I, pin 12 on front SAM control unit with fuse and relay module (N10/1) Model 204 with code 807 (model year 2007) Model 204 with code 808 (model year 2008) Model 204 with code 809 (model year 2009) The model codes can be verified in EPC using vin and observing DataCard

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Paul Technical Support Specialist
Lefkosia, Cyprus
Paul
 

Hi Josep, Is this due to Hardware changes on the F-SAM?? I believe i have never stumbled across this. And there is a lot F-SAM replacements going on in the Greek region. Unless our dealerships actually supply this every single time a new F-SAM is ordered.

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Oscar Diagnostician
Lorton , Virginia
Oscar
 

Would this be also the same on a S550 2010?

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Raymond Diagnostician
Phoenix, Arizona
Raymond
 

This information only applies to the C-Class models

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Oscar Diagnostician
Lorton , Virginia
Oscar
   

Thanks Josep. I have a custumer that replaced the SAM module, now the car don’t start, no crank. Could he had install this incorrectly? Or is a programming, configuration error?

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Raymond Diagnostician
Phoenix, Arizona
Raymond
 

look up the front sam replacement in WIS for this model and see if it shows a modification, if you do not have WIS send me your vin, i will have a look., verify all relays were swapped over from original and are in the correct locations

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