[Grich]

Hi guys,
2016 Metris Cargo radio will not turn off by key or button. Had to disconnect battery over weekend. My dealer has no idea as well. Metris in service garage @ Mercedes till we find out why. Anyone else had this problem?

I had this problem once. I found the solution was to press and hold the "On" button for more than 15 seconds. That shut of the radio. I haven't had it happen again.