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Cant connect to PTCM ?
#1
Mercedes Benz 
Hey all
I have a problem that i cant connect to my W221 PTCM ecu in vediamo ?
I Can fine connect to others ecu
But when i try connect to PTCM i get the:
Error:Unable to establish communiacation with ecu reason CAESAR:ChannelManager:03039:ecu responded with a refuse message to the init message.

What im i doing wrong here since i cannot initiate contact whit the ecu ?
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#2
It may not have one depending on the year
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#3
Right connection speed set? Don't know if this ecu also needs change.
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#4
The car is from 11-2007 and has automatic tail gate and whit buttom to close tailgate
I Will code it so i Can close whit key
How Can i see if it has the PTCM ECU ?
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#5
probably not right cbf or ignition off
if my post was helpful - hit thanks 1087
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#6
Hey Tirex2k and thanks for reply

is there any way to tell if my cbf is bad ?
do you mean i should connect whit ignition off ? og only tried whit ignition on and whit car startet to acces the PTCM but no luck
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#7
No u need ign on and use right cbf. Also i dont remember if its can or kline, for kline u need vedi 4.02.02
if my post was helpful - hit thanks 1087
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#8
ok i have igen on and also tried whit car startet but no lock

How can i attached pictures ind this forum ? or file

here is picture from PTCM today whit the error https://imgur.com/a/sh2f2pn
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#9
Are you trying to code the trunk? That has nothing to do with the PTCU.. This car does NOT have a PTCU.. PowerTrainControlUnit is on the engine CAN and other CANs involved in Radar systems ect. not interior CAN, and a 2007 w221 did NOT have a PTCU

I think your terminology is a bit off....
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Remember the THANKS and + buttons if this helps you... It just makes me feel good
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Thanks given by: HestonDiag


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