Hi,
It was the command firmware as described here W212 E-Class & Apple CarPlay / Android Auto - The Jam Journal
The primary goal for me was to get Android Auto but the fix of DAB is a huge bonus. I don't think it was a DAB+ issue as such, I think Merc didn't account for the being so many stations so there was a limit on the amount it would see.
It was the command firmware as described here W212 E-Class & Apple CarPlay / Android Auto - The Jam Journal
The primary goal for me was to get Android Auto but the fix of DAB is a huge bonus. I don't think it was a DAB+ issue as such, I think Merc didn't account for the being so many stations so there was a limit on the amount it would see.