Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Panel Switches do not Function

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

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  • When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:
    • A communication malfunction DTC may be stored.
    • The radio and display receiver assembly may not operate normally.

PROCEDURE

1.

CHECK PANEL SWITCH

(a) Check for foreign matter around the switches that might prevent operation.

OK:

No foreign matter is found.

NG

REMOVE ANY FOREIGN MATTER FOUND

OK

2.

CHECK PANEL & STEERING SWITCH (OPERATION CHECK)

(a) Enter the "Panel & Steering Switch Check Mode" screen. Refer to Check Panel & Steering Switch in Operation Check.

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(b) Operate the abnormal switch and check if the switch status is correctly displayed.

OK:

The switch status is correctly displayed as operated.

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Operation Check

    Parking Brake Switch Circuit

    See More:

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    Toyota Avalon (XX50) 2019-2022 Owners Manual

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