LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2004 >> RX 330 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 541 (Navigation) >> Navigation System >> Display Does Not Dim When Light Control Switch Is Turned ON >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK IMAGE QUALITY SETTING 
    1. Enter the display adjustment screen by pressing the "DISP" switch.
      Fig 1: Diagnostic Tool Display - Day Mode
      G04945332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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: Go to step   2 

    OK: TURN "DAY MODE" SETTING OFF 

  2. CHECK VEHICLE SIGNAL (DISPLAY CHECK MODE) 
    1. Enter the "Display Check Mode" (Vehicle Signal Check) (See DISPLAY CHECK MODE  ).
      Fig 2: Diagnostic Tool Display - Vehicle Signal Check Mode Screen
      G04945333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Check that the display changes between DIM and BRIGHT according to the light control switch operation.

      OK 

      LIGHT CONTROL SWITCH DISPLAY TABLE

      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: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

    OK: REPLACE MULTI-DISPLAY