I guess housing is not neccessary as all is build in the mirror. I read in one MB forum for other Mercedes model that changing mirror with the one with homelink and it works...I have it (US spec GLA) and there are three buttons on the bottom of the rear view mirror (can program 3 different remotes). I would doubt MB would have the electronics in the mirror housing if the home link did not exist. I you have three buttons then maybe.
I got a base model and do not have homelink, but saw this on Amazon for $119. Let me know if you decided to try it.I guess housing is not neccessary as all is build in the mirror. I read in one MB forum for other Mercedes model that changing mirror with the one with homelink and it works...
If you bought the premium package and homelink is included, then the video works. The base model doesn't come with homelink so the link I provided is the next best thing that I have found. I just wonder if I can put the unit into my sunglass holder and get power from the lights?