Illumination for Panel Switch does not Come on with Tail Switch ON [04/2018 - ]: 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 [04/2018 - 08/2020] , or refer to OPERATION CHECK [08/2020 - ]

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

   OK

   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: 

OK 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [04/2018 - ] 

Result: 

NG 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [04/2018 - 08/2020]  , or refer to  PROBLEM SYMPTOMS TABLE [08/2020 - ]