Don't worry man, my side mirror, doesn't have the blindspot light, and my grill does not have the sensor. The software is preinstalled, however in Brazil they remove the parts to stop it from functioning as Mercedes does not offer this here. If you activate nothing happens. BMW does the same, and Audi started doing it as well.
I am planning on buying the radar sensor, and changing the mirror as the rest of the hardware and software is here. I got this info from a maintenance guy of a dealer here in Brazil
Last edited by pcpedroariel; Sep 29, 2013 at 08:22 AM.