Mercedes-Benz 2009 C-Class Operator's Manual page 180

Controls in detail
Audio system
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.
178
Sound settings
For sound adjusting see:
Volume ( Y page 163)
R
Balance control and fader ( Y
R
Bass and treble control (
R
Surround sound (
R
page 164)
Y page 163)
Y page 164)