Hello, I am the owner of a Mercedes W205 from 2015. The message Collision Prevention Assist plus inoperative is displayed. I bought a car with minor damage. I have already replaced the radar sensor in the car and the wiring in the bumper, which was damaged. It did not help, the message is still displayed. I was there. at two mechanics, they detected the error -B220600, but neither of them can find a description of this error and remove it. I called the Mercedes showroom and they told me a very high price for the repair, because the car is not covered by warranty. Does anyone of you have an idea what is wrong? yes? Or what does this error code mean? Thank you very much for any help. Regards.