Toyota 4Runner 2021 Owner's Manual page 128

126
4-1. Basic operation
2
Select the desired screen
button.
Select to adjust the sound
A
balance between the front
and rear speakers.
Select to adjust the sound
B
balance between the left and
right speakers.
Automatic sound levelizer
■
(ASL)
The system adjusts to the opti-
mum volume and tone quality
according to vehicle speed to
compensate for increased road
noise, wind noise, or other
noises while driving.
Type A

1
Select "Automatic Sound
Levelizer".
2
Select "High", "Mid", "Low" or
"Off".
Type B

1
Select "Automatic Sound
Levelizer".
2
Select to set the automatic
sound levelizer on/off.
Audio screen adjustment
Screen format settings
■
The screen format can be
selected for USB video.
1
Press the "MENU" button.
2
Select "Setup".
3
Select "Audio".
4
Select "Common".
5
Select "Screen Format".
6
Select the desired item to be
adjusted.
Select to display a 4:3
A
screen, with either side in
black.
Select to enlarge the image
B
horizontally and vertically to
full screen.
Select to enlarge the image
C
by the same ratio horizontally
and vertically.
Color, tone, contrast and
■
brightness adjustment
The color, tone, contrast and
brightness of the screen can be
adjusted.
1
Press the "MENU" button.
2
Select "Setup".