Hello together, when I bought my Toledo back then, I unfortunately only got one key to it. For some time now I have been thinking about learning a second key. VCDS is available, and I also have the 5-digit login code. A few days ago I got two new transponders – exactly the same type that is also in my old key (PCF7931 XP/SQ). Now I wanted to try to learn them, but so far I did not have any success at all. The procedure that I perform is as follows: ECU selection – 25 – immobiliser – Login (pin input) – Adjustment. I then adjusted the new keys with the new value, took over everything and followed the order exactly as described in the VCDS guide. Nevertheless, in the end only my original key works – the new keys are not accepted. If I look at “Adaptation”, there is always only one “1”. That means that d the new keys are not taken over. I really tried everything possible and also watched numerous videos on how to learn transponders. Am I doing something wrong? Or is it possibly not possible to learn the new keys? If someone has an idea, I would be very happy about your help.