Panel Switches do not Function: Procedure

CHECK PANEL SWITCH
1. Check for foreign matter around the switches that might prevent operation.
  OK
  
  No foreign matter is found.
NG → REMOVE ANY FOREIGN MATTER FOUND

OK: Go to next step
CHECK PANEL SWITCH (OPERATION CHECK)
1. Enter the "Panel & Steering Switch Check Mode" screen. Refer to Check Panel & Steering Switch in Operation Check. Refer to OPERATION CHECK .
  
  Fig 1: Screen Display - Panel & Steering Switch Check Mode
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Operate the abnormal switch and check if the switch name and status are correctly displayed.
  OK
  
  The switch name and status are correctly displayed as operated.
NG → See step 3

OK → See step 4
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY. Refer to REMOVAL