Mercedes-Benz C-Class 2009 Owners Manual - Manual (Page 180)

Audio system
178
After completion of the update, the satellite
radio basic menu will appear. The station last
tuned to will begin to play. If not available, the
next subscribed channel starts beginning
with channel 1. Sound settings
For sound adjusting see:
R Volume ( Y page 163)
R Balance control and fader ( Y page 164)
R Bass and treble control ( Y page 163)
R Surround sound ( Y page 164)
Controls in detail