Illumination for Panel Switch does not Come on with Tail Switch ON [06/2018 - 11/2022]: Procedure

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CHECK VEHICLE SIGNAL (OPERATION CHECK)

Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Refer to OPERATION CHECK [06/2018 - 03/2019] , or refer to OPERATION CHECK [03/2019 - 09/2019] , or refer to OPERATION CHECK [09/2019 - 04/2020] , or refer to OPERATION CHECK [04/2020 - 11/2022]

Check that the display changes between ON and OFF according to the light control switch operation.

Light Control Switch	Display
Tail or head	ON
Off or AUTO	OFF

HINT:

This display is updated once per second. As a result, it is normal for the display to lag behind the actual switch operation.
Make sure to move the vehicle to a bright area before performing an operation check with the light control switch in the AUTO position.

Result

Proceed to
OK
NG

Result:

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to REMOVAL [06/2018 - 01/2019] , or refer to REMOVAL [01/2019 - 03/2019] , or refer to REMOVAL [03/2019 - 09/2022] , or refer to REMOVAL [09/2022 - 11/2022]

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [06/2018 - 01/2019] , or refer to PROBLEM SYMPTOMS TABLE [01/2019 - 03/2019] , or refer to PROBLEM SYMPTOMS TABLE [03/2019 - 09/2019] , or refer to PROBLEM SYMPTOMS TABLE [09/2019 - 04/2020] , or refer to PROBLEM SYMPTOMS TABLE [04/2020 - 09/2022] , or refer to PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022]