Wired iPod connection

To interface to the COMAND you need a special Mercedes Media Interface to 30-pin or lightning cable. I picked one up off of eBay for not too much money. You have a 2014 it looks like and at least for my 2014 E63 the lightning cable works. For older years the 30-pin cable + 30-pin to lightning connector may be needed.
That being said... I'm not terribly impressed with Apple Music on an iPhone that emulates an iPod interface to the MB COMAND. Sounds great but the head unit starts getting out of sync with what is actually being played if I use hey Siri to play an artist for example.
-chris






