Cruise control is not detected!

Hello, I bought a tempomate lever at ibai. in the description, however, is the point of commissioning: The ECU recognizes the Temopaten in a few minutes! However, I could not imagine that it should go without TECH. and so it was, it was built in and it did nothing! blinker went, but the tempomat reacts to nothing. do I need there Tech or is it somehow like that? Best regards