Last Modified: 09-10-2025 6.11:8.1.0 Doc ID: RM100000001ATUT
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 -           ]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for Gasoline Model): Poor Sound Quality in All Modes (Low Volume); 2019 - 2022 MY Avalon [04/2018 -        ]

Poor Sound Quality in All Modes (Low Volume)

PROCEDURE

PROCEDURE

1.

CHECK AUDIO SETTINGS

(a) Set treble, middle and bass to the initial values and check that the sound is normal.

OK:

The sound returns to normal.

HINT:

Sound quality adjustment measures vary according to the type of amplifier.

OK

END
NG

GO TO STEP 2

2.

COMPARE WITH ANOTHER VEHICLE OF SAME MODEL

(a) Compare with another vehicle of the same model which is not malfunctioning to see if there is any difference in the sound quality.

OK:

No difference is found.

OK

END
NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click here 2019 - 2020 MY Avalon [04/2018 - 08/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for Gasoline Model): PROBLEM SYMPTOMS TABLE 2021 - 2022 MY Avalon [08/2020 -        ]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for Gasoline Model): PROBLEM SYMPTOMS TABLE