In my question to the Fa. Alexander Nikolin whether the steering KNAUF CARBON control knob steering wheel knob button power steering .. an approval number has., vonHerrn Nikolin as follows wude me replied. Then send the knob back! So you can not deal with a customer. The legal department desADAC I informed.
The steering wheel knob must possess a license - ie a marking eg "KBA1234", "E1 123456" or "e1 00-1234" is. The E with a number of stands in a circle, the e with a number of stands in a square, this identification has made the approval of the component.