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:

    Initialization
    Items to initialize The following items must be initialized for normal system operation in cases such as after the battery is reconnected, or maintenance is performed on the vehicle. ...

    Setting up the “Areas to Avoid”
    Areas you want to avoid because of traffic jams, construction work or other reasons can be registered as areas to avoid. 1. Push the “SETUP” button. 2. Touch “Navi.” on the “Setup” scr ...

    Quality Control
    You may have noticed a few miles on the odometer when you took delivery of your Lexus. This mileage is a result of the comprehensive process used to ensure the quality of your vehicle. This proce ...