2009 Lexus IS 350 Navigation Manual - Page 171

AUDIO/VIDEO SYSTEM D Tone and balance How good an audio program sounds to you is largely determined by the mix of the treble, midrange, and bass levels. In fact, different kinds of music and vocal programs usually sound better with different levels of treble, midrange, and bass. A good balance of the left and right stereo channels and of the front and rear sound levels is also important. Keep in mind that if you are listening to a stereo recording or broadcast, changing the right/left balance will increase the volume of one group of sounds while decreasing the volume of another. 1. Push the "AUDIO" button. The buttons for radio, CD changer and DVD changer operation are displayed on the function button display screen when the audio control mode is selected. Touch them lightly and directly on the screen. The selected button is highlighted. INFORMATION D If the system does not respond to a touch of a touch−screen button, move your finger away from the screen and then touch it again. D You cannot operate touch−screen buttons. dimmed 2. Touch "SOUND". D Wipe off fingerprints using a glass cleaning cloth. Do not use chemical cleaners to clean the touch screen. 191