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Discussion Starter #1
Hello,

I have mercedes ml in garage. Do diagnostic with mb star. In engine no fault data, but coling fan work in full speed no comunication with transmision ecu and transfer case box. In can getaway coding ok and no faults. All fuses ok.
Maybe have this problem.

Thanks for help
 

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I have seen one like that a 2007 with fan going full blast when running and still going for it after shut off. Sorry can't help you with the cause but at least you know it happens to other 164s so someone may be able to help.
 

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Discussion Starter #4
Through what place do wires come into the automatic transmission? I only can see ism module on it ? I need to check supply voltage and can.
 

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Discussion Starter #5
w164

Hello,

Yes transmission ecu is dead.


Bought a used transmission ECU, but the car than the forward or back. Comunication to transmision ok to ism ok no fault data. I think need reprogram it. I do intial start up scn coding .
1.Perfom scn coding with data storage device.
2.Manually enter scn coding.
I dont have data storage. Maybe someone can help manually scn coding?
 

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