I am selling a module that plugs into your can bus system and interacts with the the vehicle having no negative affect on the STAR system. This system givesthe remote expanded distance up to 150 ft not only that but you can open and close your windows, sunroof, doors, convertable top and much more with the push of a button. and not have tohold the key in front of the door. the system works on most newer mercedes if interested please call303-522-8544