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3-2. Using the audio system
IS250/220d/200d_EE
Optimal use of the audio system
Adjusting the Automatic Sound Levelizer (ASL)
Press .
The ASL switches between on and off modes each time
is pressed.
ASL automatically adjusts the volume and tone quality according to
the noise level as you drive your vehicle.
Adjusting sound quality and volume balance
Changing sound quality modes
Press .
Pressing changes the sound mode in the following order:
“BAS”“MID”“TRE”“FAD”“BAL”
The illustration below is for left-hand drive vehicles.
The button positions and shapes may differ slightly for right-hand
drive vehicles.
Adjusting the sound qual-
Changing the sound quality
Adjusting the
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