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:

    Light bulbs
    You may replace the following bulbs yourself. The difficulty level of replacement varies depending on the bulb. If necessary bulb replacement seems difficult to perform, contact your Lexus dealer. ...

    Customizable features
    1. Vehicles with a navigation system: Settings that can be changed using the screen of the navigation system 2. Vehicles with a navigation system: Settings that can be changed using the menu swit ...

    Erasing the entire HomeLink® memory (all three programs)
    Press and hold the 2 outside but- tons for 10 seconds until the indi- cator light flashes. If you sell your vehicle, be sure to erase the programs stored in the HomeLink® memory.  - Befo ...