Tcm communication problem

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c300 2009 w204
Hi my Mercedes c300 w204 is in limp mode, scanner fault code is u 0101 is there a fuse or relay I can test and what number is the relay ,fuse .what ells can I do to look for the problem. Will it help to remove the TCM and clean it .There is oil on the electric plug that go to the transmission I cleaned it but it did not reset.
Thanks
 
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c300 2009 w204
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Hi I am new on this page hope this is correct. My mercedes c300 w204 is in limp mode fault code u01010 communications problem .question what is the fuse and relay number of the Tcm and can that be the problem.question 2 will it help if I clean the TCM and install it again ,there was oil on the connector where it go in to the gearbox I kleen it bud still come up with u0101code Thanks
 
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c300 2009 w204
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Hi my mercedes c300 w204 is in limp mode the scan reader fault code is u0101 no communication to tcm ,Can you tell me what is the fuse and relay number.and can I remove the tcm clean it and install it again .On the connecter block to the transmission was oil I clean it and still the same code .it is a 722.9 transmission
 

alexanderfoti

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W221 S65 AMG - W204 C63 AMG + Various other MB's
TCM is inside the gearbox
if there is power present at the connector, the problem is a dead TCU (most likely)
 

00slk

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2002 SL55 AMG, 2005 E320 CDi, 2014 SLK250 CDi, 2003 SLK200
As AMF Automotive says ;)
 
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c300 2009 w204
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What do you recommend is the next step to ,replace tcm and valve body
 


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