Tutorial: How to renew and clone Mercedes Benz 7G Tronic transmission gearbox TCU with Autel step-by-step.
It is a 2010 Mercedes GLK350, the shop just replaced the 7-speed automatic transmission with the used one. What we are going to be doing is cloning the TCU now over here on the ground.
Got Autel IM508 or IM608 connected with the XP400 then over the OBD plug.
This is the Godiag GT105 along with this GT107 transmission adapter. It is a great tool to use for these makes.
It is really easy to set up and we’ve got the power coming in that cable is connected to the jump pack using the alligator clips to connect the cable.
In IM508, go into TCU tools you can start by clicking the wiring diagram.
It will show you how to connect. We’ve got a little diagram that shows you where to connect the power, the ground, CAN high, CAN low.
It does want us to put a 120 ohm resistor between the CAN H and CAN L. Now the nice thing about the godiag is that it actually has a little 120 ohm resistor. You just push this little button whenever you want to set it. That’s we are all set up.
We are going to start by reading the TCU data.
We have our VIN number,all of TCU information including key information.
Save this file.
Go ahead and back up the coding.
Our coding is now backed up.
We can save the file.
Let’s go ahead and connect all of this to the donor transmission in the car in the same way that we were connected to the original one.
We have OBD cable connected to our godiag and the leads for the godiag are connected to the transmission plug.
We’re connected just like the diagram on the Autel shows us.
We are going to start by backing up the data from the donor module again. There’s our VIN number but this is the one from the donor car.
Go ahead and save it. Now that we have that backed up, let’s go ahead and renew TCU.
Press Yes to obtain an erase password. It succeeded in calculating the password. Here is the erase password.
We can now proceed with renewing this TCU. We have successfully renewed the TCU.
Now we can go ahead and write the TCU data from the original over to the donor.
Let’s click Write TCU. Select the file we read from the original transmission earlier. Writing succeeded.
Next we will write the coding. Select the file that we read earlier from the original transmission, enter the VIN number.
Writing of coding is completed.
Now let’s go back and read TCU data to make sure that it wrote the VIN number.
Our VIN number for the donor module is still there so we’re going to have to manually write that in.
So at the main menu we’re going to hit Write VIN, enter the VIN number hit okay. Writing of VIN number has succeeded.
Now we can go back and read TCU data again and this time we’ll make sure that our VIN number has been changed.
We might still have to active this TCM because here it is showing No activated.
Let’s go ahead and hit Activate TCU. Activating transmission succeeded.
Read TCU data again. The TCU has been activated. Let’s remove our cable, reconnect the connector.
This transmission is now ready to roll. That’s how you clone the Mercedes 7G tronic transmission gearbox TCU using Autel IM508 and godiag adapter.
Read also:
How to Clone and Program Mercedes ME9.7 ECU with Autel IM608
