Toyota 2015 Corolla Owner's Manual page 204

Adjusting sound quality
■
Turning
Sound quality
mode
Bass*
Treble*
Front/rear
volume
balance
Left/right
volume
balance
*:The sound quality level is adjusted individually in each audio mode.
Adjusting the Automatic Sound Levelizer (ASL)
■
When ASL is selected, turning
amount of ASL in the order of "LOW", "MID" and "HIGH".
Turning
ASL automatically adjusts the volume and tone quality according to the
vehicle speed.
COROLLA_TMMMS_TMMC_U (OM12F00U)
5-2. Using the audio system
adjusts the level.
Mode
Level
displayed
"BASS" -5 to 5
"TREBLE" -5 to 5
"FADER" F7 to R7
"BALANCE" L7 to R7
to the left turns ASL off.
Turn to the Turn to the
left right
Low High
Shifts to rear Shifts to front
Shifts to left Shifts to right
to the right changes the
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