Lexus RX 450h 2014 Owner's Manual page 541

3-4. Using the audio system
■
Adjusting sound quality
Turning
Mode
displayed
"BAS"
"MID"
"TRE"
"FAD"
"BAL"
*: The sound quality level is adjusted individually in each audio mode.
Turning the Automatic Sound Levelizer (ASL) on/off
Turning
clockwise turns off the ASL.
ASL automatically adjusts the volume and tone quality according to the noise
level as you drive your vehicle.
540
adjusts the level.
Sound qual-
ity mode
*
Bass
*
Mid-range
*
Treble
Front/rear
volume
balance
Left/right
volume
balance
clockwise turns on the ASL, and turning
Turn counter-
Level
clockwise
-5 to 5
-5 to 5 Low
-5 to 5
F7 to R7 Shifts to rear
L7 to R7 Shifts to left
Turn clock-
wise
High
Shifts to front
Shifts to right
counter-