Mercedes-Benz Metris Forum banner

brake controller

  1. Electronics
    Hi All- I'm going down a road that lots of others have gone down and I wish I could turn back. I've got a 2016 Metris. Took it to MB dealer and paid $2200 to get a hitch installed.... and the brake controller doesn't work. I didn't know to ask whether or not all 7 pins of the connector they...