Mazda 2009 Mazda3 4-Door Owner's Manual page 212

Interior Comfort
Audio System
qPower/Volume/Sound Controls
Power ON/OFF
Turn the ignition switch to the ACC or
ON position.
Press the power/volume dial to turn the
audio system on.
Press the power/volume dial again to turn
the audio system off.
NOTE
To prevent the battery from being discharged,
do not leave the audio system on for a long
period of time when the engine is not running.
Volume adjustment
To adjust the volume, turn the power/
volume dial.
Turn the power/volume dial to the right to
increase volume, to the left to decrease it.
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Power/Volume dial
Audio sound adjustment
1. Press the audio control dial to select the
function. The selected function will be
indicated.
Audio control dial
Depending on the mode selected, the
indication changes.