Toyota Avalon (XX50): Poor Sound Quality in All Modes (Low Volume). Portable Player cannot be Connected Manually/Automatically. Portable Player cannot be Registered

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Audio / Video / Audio And Visual System(for Gasoline Model) / Poor Sound Quality in All Modes (Low Volume). Portable Player cannot be Connected Manually/Automatically. Portable Player cannot be Registered

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.

OK

END

NG

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

Portable Player cannot be Connected Manually/Automatically

CAUTION / NOTICE / HINT

HINT:

Some versions of "Bluetooth" compatible audio players may not function properly, or the functions may be limited using the radio and display receiver assembly, even if the portable audio player itself can play files.

Click here

PROCEDURE

1.

CHECK CONNECTED DEVICE SETTINGS

(a) Check if the portable player is registered as a connected device.

NOTICE:

If a cellular phone is used as a portable player, it must be registered independently from the registration that is performed for the hands-free system.

HINT:

Only 5 portable players can be registered.

Result

Proceed to

The portable player is registered as a connected device.

A

The portable player is not registered as a connected device.

B

B

REGISTER PORTABLE PLAYER AS CONNECTED DEVICE

A

2.

CHECK SYMPTOMS

(a) Check the connection condition between the portable player and the radio and display receiver assembly.

HINT:

The portable player cannot be connected under any of the following conditions:

  • The portable player is connected to another device.
  • The portable player is connected to the radio and display receiver assembly using the hands-free function.
  • The radio and display receiver assembly has cleared the portable player registration.
  • The portable player is off.

Result

Proceed to

The portable player cannot be connected automatically.

A

The portable player cannot be connected manually.

B

B

GO TO STEP 4

A

3.

CHECK AUTOMATIC CONNECTION SETTINGS

(a) Check the automatic connection settings of the "Bluetooth" audio.

(1) Check that the "Bluetooth" connection setting is on.

OK:

"Bluetooth" connection setting is on.

NG

TURN "Bluetooth" POWER TO ON

OK

4.

CHECK PORTABLE PLAYER STATUS

(a) Check the status of the portable player.

(1) Check that the portable player is not in standby mode.

(2) Check that the portable player is not connected to another device (headphones, etc.).

OK:

The portable player is not in standby mode and not connected to another device (headphones, etc.).

NG

TAKE PORTABLE PLAYER OUT OF STANDBY MODE AND DISCONNECT OTHER DEVICES (HEADPHONES, etc.)

OK

5.

CHECK USING ANOTHER "Bluetooth" AUDIO COMPATIBLE VEHICLE OF SAME MODEL

(a) Check if the portable player can be connected manually/automatically to another "Bluetooth" audio compatible vehicle of the same model.

OK:

The portable player can be connected manually/automatically.

NG

PORTABLE PLAYER IS NOT COMPATIBLE

OK

6.

REMOVE ADDITIONAL DEVICES WHICH USE RADIO WAVES

(a) Remove additional devices which use radio waves.

(b) Check if the portable player can be connected manually/automatically.

OK:

The portable player can be connected manually/automatically.

OK

END

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Portable Player cannot be Registered

CAUTION / NOTICE / HINT

HINT:

Some versions of "Bluetooth" compatible audio players may not function properly, or the functions may be limited using the radio and display receiver assembly, even if the portable audio player itself can play files.

Click here

PROCEDURE

1.

CHECK THAT PORTABLE PLAYER IS "Bluetooth" AUDIO COMPATIBLE

(a) Check if the portable player is "Bluetooth" audio compatible.

Result

Proceed to

The portable player is "Bluetooth" audio compatible.

A

The portable player is not "Bluetooth" audio compatible.

B

B

USE A "Bluetooth" AUDIO COMPATIBLE PORTABLE PLAYER

A

2.

CHECK CONNECTION PROCEDURE OF CONNECTED DEVICE

(a) Referring to Owner's Manual, correctly register the portable player.

(b) Check that the portable player has been registered as a connected device.

HINT:

The portable player cannot be registered under any of the following conditions:

  • The A2DP (Advanced Audio Distribution Profile) is not used when registering a cellular phone.
  • A different portable player registration remains in the radio and display receiver assembly.
  • A different radio and display receiver assembly registration remains in the portable player.
  • The portable player is off.

OK:

The portable player has been registered as a connected device.

OK

END

NG

3.

CHECK USING ANOTHER "Bluetooth" AUDIO COMPATIBLE VEHICLE OF SAME MODEL

(a) Check if the portable player can be registered normally to another "Bluetooth" audio compatible vehicle of the same model.

OK:

The portable player can be registered.

NG

MALFUNCTION IN PORTABLE PLAYER

OK

4.

REMOVE ADDITIONAL DEVICES WHICH USE RADIO WAVES

(a) Remove additional devices which use radio waves.

(b) Place the portable player close to the radio and display receiver assembly.

(c) Check that the portable player can be registered as a connected device.

OK:

The portable player can be registered.

OK

END

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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