Turning the Automatic Sound Levelizer (ASL) on/off

Turning the “TUNE/SEL” knob clockwise turns on the ASL, and turning the “TUNE/SEL” knob counterclockwise turns off the ASL.

ASL automatically adjusts the volume and tone quality according to the noise level as you drive your vehicle.

    See also:

    Customization
    Customizable features Your vehicle includes a variety of electronic features that can be personalized to suit your preferences. Programming of these preferences can be performed by your Lexus dea ...

    General information
    You are responsible for ensuring that your Lexus is operated and maintained according to the instructions in the Owner’s Manual and the “Maintenance Information” section of this guide. Y ...

    Vanity mirrors
    Slide the cover. The light turns on when the cover is opened. ...