http://www.mercedesbenztechs.com - 770-837-3888 In this video I replaced the control unit for the soft top, After running diagnosis I got code B1000 which is the control unit rollover bar(N52) The roof will not respond at all neither would the windows, before you change module make sure you have the same fault codes since there might be many different things that can go wrong.Thanks and don't forget to view my website at www.MercedesBenzTechs.com