Pain in 0AM & 01J Transmission Control Unit
0AM Transmisson & 01J Mechatronics, TCM /TCU transmissions control module, like dsg 7 dq200, dsg 200, 0am927769d, are famous for their high maintenance frequency. For the second hand car owners, it is even worse headache as it is totally impossible for them to retrieve the code from Original Unit. Only till their TCM is out of function, they realize that they need that code accredited from Original one. Quite a few transmission repair workshops now can offer service to swap the TCM program for car owners.
Immobilizer Anti-Theft Function Launched
Audi & VW, in order to beat such unauthorized swap, introduced immobilizer, an anti-theft function, to the newer TCU. With this immobilizer, Manufacturers can fight the unauthorized swap of the TCM. Of course if you keep the original unit well, you just directly clone the original software and no need to unlock it.
P1701 00  Immobilizer Code
If original account credentials are not available, faulty code via VCDS will show up just like in the below picture.
The fault code represents the component protection active, so we know Immobilizer Unlock is required.
Now please run the diagnose process for unlocking requirement:
1. select and entry "Component Protection"
2. entry "Perform Test" & click the "Done/Continue"
3. enter the required information.
This is the key to unlock is the Activation Number and Audi online Account Credentials.
Only when the screen showed "The component protection base programming has been carried out successfully", we can continue to the next phase.
Once successfully unlock the immobilizer, we can back to standard TCU software programming. To log software into TCU if necessary.
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