On the “Sound Settings” screen, sound quality (Treble/Mid/ Bass), volume balance can be adjusted.How to adjust the sound settings and sound quality 1 2 3 Select “-” or “+” to adjust the treble, mid or bass to a level between -5 and 5. 4 5 Select “Front” or “Rear” to adjust the front/rear audio balance.
6 7 Select “L” or “R” to adjust the left/right audio balance.
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A quick Toyota Corolla quiz: every answer comes with an explanation and a link to the manual page.
