Mercedes-Benz A-Class Operator's Manual page 344

342 MBUX (Mercedes-Benz User Experience)
Radio overview
1 Selects an active frequency band
2 Station logo
3 Station name or set frequency
4
Artist, title, album and radio text
5 HD radio logo
6 Options
7 Switches HD radio on or off
8
Mute function
9 Calls up the station list
A Search