Mercedes-Benz 2006 C 55 AMG Operator's Manual page 213

Controls in detail
Audio system
Accessing via number keys
Enter number of preset you wish to
select, e.g. 1.
The radio plays the station stored
under this number and the PTY function
changes to the category corresponding
to the station.
Tuning via manual channel input
Example: tuning in channel 16
212
Press * button.
Input line appears in the main radio
menu.
Use number keys to enter desired
channel within 8 seconds, e.g. 1
6.
The system tunes to channel 16.
The station you have selected begins to
play.
i
You can only enter available channel
numbers.
Tuning via the program category list
The category list contains all currently
receivable categories of programs. It is
arranged alphabetically.
Selecting a category
Press PTY soft key.
The current PTY category of the
station is displayed.
Press <<< or >>> soft key.
This switches between the
individual categories.
When changing the category, the
channel selected last in the new
category becomes audible.