Toyota SIENNA 2011 Quick Reference Manual page 487

Using the audio control function
■
Changing sound quality modes
Type A
Pressing
"BAS" → "TRE" → "FAD" → "BAL" → "ASL"
Type B and C
Press
STEP 1
Press
STEP 2
"BASS", "MID" (type C only), "TREB", "FADE", or "BAL"
selects the mode in the following order.
.
that corresponds to the desired mode.
I n f o r ma t i o n P r o v i d e d b y :
3-2. Using the audio system
3
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