Display does not Dim when Light Control Switch is Turned ON: Procedure

Fig 1: Checking Image Quality Setting

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1. Enter the display adjustment screen by pressing the "DISP" switch.
2. Turn the light control switch to the TAIL position.
3. Check if "DAY MODE" on the display is ON.

   OK

   "DAY MODE" is ON.

NG → See step   2 

OK → TURN "DAY MODE" SETTING OFF 

Fig 2: Diagnostic Tool Display - Vehicle Signal Check Mode Screen

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Enter the "Display Check" mode (Vehicle Signal Check). Refer to OPERATION CHECK .
2. Cover the automatic light control sensor on the instrument panel with a cloth.
3. Set the instrument panel light control to less than maximum (to activate the dimmer function that works when the light control switch is in the TAIL position).
4. Check that the display changes between DIM and BRIGHT according to the light control switch operation.

   OK

   Light Control Switch	Display
   TAIL or HEAD	DIM
   OFF	BRIGHT

   HINT: 

   The display is updated once per second. It is normal for the display to lag behind the actual switch operation.

NG → See step   3 

OK → See step   4