2009 Mercedes CL-Class Owner's Manual - Page 209

Control systems COMAND AUX Audio AUX Switching to Audio AUX mode X RTreble and bass (Y page 89) sound (Y page 89) Video AUX Automatic picture fade-out If a video is playing when the vehicle is shifted from park position P into neutral position N, drive position D or reverse gear R the picture is faded out automatically and the following message appears in the display: In order not to distract driver, picture is faded out while the vehicle is in motion. When the vehicle is shifted back into park position P, the picture comes on again. RSurround Select Audio £ Audio £ AUX. The Audio AUX menu appears. You will hear the medium in the external audio source if it has been connected and switched to play. G Warning Due to the different volumes of the external audio sources, system messages (e.g. navigation announcements) may be much louder. You may need to disable these system messages or adjust the volume of these messages manually. i The volume of external audio sources is extremely variable. It is possible that a device connected as an external audio source will sound quieter or louder in the vehicle or that the usual maximum volume cannot be achieved. On certain devices the volume can be set separately. In this case start at a moderate volume and increase it slowly. In this way you can determine whether the system is capable of playback without distortion, even at high volume. Switching to Video AUX mode X i Please refer to the corresponding operating instructions for information about how to operate the external audio source. You can adjust the following settings in Audio AUX mode: RVolume (Y RBalance Select Video £ Video £ AUX. The Video AUX menu appears. You will see the medium in the external audio source if it has been connected and switched to play. page 88) Z and fader (Y page 89) 207