After the part has arrived at home, I took it into operation immediately. The instruction manual was understandable that expectations were accordingly. Many functions and above all why buy to plug it to the BMW motorcycle, without having to remove the battery. I had the part about 1 month ago - not permanently - infected, everything worked beautifully - at the BMW Motorrad means of scanning bus connector. After some time I wanted to once again charge the battery, or on receipt adjust, as the part of the mind gave - can indeed happen! Then put the warranty claim and get a new one.