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:

    Federal Emission Control Warranty
    WHAT IS COVERED AND HOW LONG Emission Defect Warranty Lexus warrants that your vehicle: • Was designed, built and equipped to conform at the time of sale with applicable federal emissions stand ...

    Maintenance
    Maintenance requirements To ensure safe and economical driving, day-to-day care and regular maintenance are essential. It is the owner’s responsibility to perform regular checks. Lexus recommen ...

    General maintenance
    Listed below are the general maintenance items that should be performed at the intervals specified in the “Warranty and Service Guide” or “Owner’s Manual Supplement”. It is recommended t ...