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:

    Rear automatic air conditioning system∗
    Air outlets and fan speed are automatically adjusted according to the temperature setting. ...

    Transfer
    *: Your Lexus vehicle is filled with “Toyota Genuine Transfer Gear oil LF” at the fac- tory. Use Lexus approved “Toyota Genuine Transfer Gear oil LF” or an equiva- lent of matching quali ...

    Reporting safety defects for U.S. owners
    If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in ad ...