See also:

Engine
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Adjusting sound quality and volume balance
 - Changing sound quality modes Press the “TUNE/SEL” knob. Pressing the button changes sound modes in the following order: “BAS” → “MID” → “TRE” → “FAD” & ...

Operation and Maintenance
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 ...