Illumination for Panel Switch does not Come on with Tail Switch ON [04/2020 - 05/2023]: Procedure

1. 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 [04/2020 - 05/2023]

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

   OK

   Light Control Switch	Display
   Tail or head	ON
   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: 

OK 

REPLACE RADIO RECEIVER ASSEMBLY. Refer to  REMOVAL [03/2017 - 05/2023] 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [04/2020 - 10/2022]  , or refer to  PROBLEM SYMPTOMS TABLE [10/2022 - 05/2023]