Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Poor Sound Quality in All Modes (Low Volume)

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.

END

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.

END

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Smart Key System(for Entry Function, Gasoline Model): Operation Check
OPERATION CHECK CHECK CUSTOMIZE PARAMETERS NOTICE: The operation check below is based on the non-customized initial condition of the vehicle. Click here CHECK THE ENTRY UNLOCK FUNCTION (a) Check the entry unlock function (driver door, front passenger door). (1) Perform a wireless lock door operation ...

Toyota Avalon (XX50) 2019-2022 Owners Manual