Replacing the control unit

Hello,

I'm having a problem replacing the engine control unit. I assume the T4 has immobilizer 2, with a 4-digit PIN, etc. However, when I access the immobilizer control unit (25) and then go to the login screen (11), and enter the 4-digit code from the trailer, including a leading zero, I get an error message saying that the code is incorrect. What now?

What am I doing wrong? I've actually read everything related to this topic using the search function, but apparently, I haven't read enough.

I would appreciate it if someone could help me.

Kai.

Hello Kai!

You don't need a login for the instrument cluster in Immo II to program the immobilizer.
Simply select the combination, go to "Adaptation," and choose block 0. Save the value 0 and confirm. Turn the ignition on/off, and that's it, it's done .

Regards,
Alex.