2008 Mercedes CLK-Class Owner's Manual - Page 221

Controls in detail Audio system Press and hold Q button until AUX appears in the display. The device connected with the external audio source cinch-connector is heard, provided it is switched to playback. Warning! G 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. Only operate an external audio source (AUX) when the vehicle is stationary. There is a risk of accident by being distracted from road and traffic conditions if you operate an external audio source (AUX) while the vehicle is in motion. Bear in mind that at a speed of just 30 mph (approximately 50 km/h), your car is covering a distance of 44 feet (approximately 14 m) every second. i Please refer to the relevant manufacturers operating instruction for the external audio source device. You can adjust the volume ( page 216), the sound settings ( page 216) and the volume distribution ( page 218) for the AUX input. The following settings can be made in the audio AUX mode: Canceling AUX mode Press any audio source button. The AUX mode is canceled. Calling up AUX mode Warning! G Volume ( page 216) Sound settings ( page 216) Volume distribution ( page 218) Due to the different volumes of the external audio sources, system messages (e.g. traffic and navigation announcements) may be much louder. You may need to disable these system messages or adjust the volume of these messages manually. 220