LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2018 >> RX 450hL >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Navigation System (Service Information) >> Navigation Ecu >> Removal [08/2019 - ] >> Procedure

Removal [08/2019 - ]: Procedure

  1. PRECAUTION 
    NOTE:

    After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Refer to PRECAUTION [08/2019 - ]

    1. for Audio and Visual System:
      NOTE:
      • When performing the following work, the audio and visual system may restart when turning the power switch on (ACC) (due to radio receiver assembly and navigation ECU certification).
        • Repair or replace the negative (-) auxiliary battery terminal due to it being disconnected or depleted.
        • The radio receiver assembly or navigation ECU replacement or removal and installation.
      • After replacing the navigation ECU, if the "New software is not compatible with the system. Contact your dealer." on-screen message is displayed on the multi-display, update the software of the radio receiver assembly.

      Refer to PRECAUTION [08/2019 - ]

    2. for Navigation System:
      NOTE:
      • When performing the following work, the navigation system may restart when turning the power switch on (ACC) (due to radio receiver assembly and navigation ECU certification).
        • Repair or replace the negative (-) auxiliary battery terminal due to it being disconnected or depleted.
        • The radio receiver assembly or navigation ECU replacement or removal and installation.
      • After replacing the navigation ECU, if the "New software is not compatible with the system. Contact your dealer." on-screen message is displayed on the multi-display assembly, update the software of the radio receiver assembly.

      Refer to PRECAUTION [08/2019 - ]

  2. REMOVE DECK BOARD ASSEMBLY (w/o Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 2

  3. REMOVE REAR DECK FLOOR BOX (w/o Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 4

  4. REMOVE REAR NO. 4 FLOOR BOARD (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 3

  5. REMOVE BATTERY SERVICE HOLE COVER (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 4

  6. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 

    w/o Rear No. 2 Seat: Refer to PROCEDURE - Step 4

    w/ Rear No. 2 Seat: Refer to PROCEDURE - Step 5

  7. REMOVE LOWER NO. 2 INSTRUMENT PANEL FINISH PANEL 

    Refer to PROCEDURE - Step 2

  8. REMOVE LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL 

    Refer to PROCEDURE - Step 3

  9. REMOVE INSTRUMENT CLUSTER FINISH PANEL ORNAMENT 

    Refer to PROCEDURE - Step 5

  10. REMOVE LOWER INSTRUMENT FINISH PANEL SUB 

    Refer to PROCEDURE - Step 10

  11. REMOVE RADIO RECEIVER ASSEMBLY WITH REGISTER 

    Refer to PROCEDURE - Step 11

  12. REMOVE NO. 1 NAVIGATION WIRE 
    1. Disconnect the 2 connectors to remove the No. 1 navigation wire.
      GTY963066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE NO. 1 RADIO BRACKET 

    Refer to PROCEDURE - Step 16

  14. REMOVE NO. 2 RADIO BRACKET 

    Refer to PROCEDURE - Step 17

  15. REMOVE NAVIGATION ECU