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Home >> Lexus >> 2024 >> ES 250 Base >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Navigation System - Service Information >> Navigation Ecu >> Removal [06/2018 - 08/2020] >> Procedure

Removal [06/2018 - 08/2020]: Procedure

  1. PRECAUTION (for HV Model) 
    NOTE:
    • When replacing the radio receiver assembly or navigation ECU, always replace it with a new one. If a radio receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
      • A communication malfunction DTC may be stored.
      • The radio receiver assembly or navigation ECU may not operate normally.
    • After replacing the navigation ECU, if "New software is not compatible with the system. Contact your dealer." is displayed on the multi-display, update the software of the radio receiver assembly.
    • 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.

    Refer to PRECAUTION [06/2018 - 08/2021]

  2. PRECAUTION (for Gasoline Model) 
    NOTE:
    • When replacing the radio receiver assembly or navigation ECU, always replace it with a new one. If a radio receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
      • A communication malfunction DTC may be stored.
      • The radio receiver assembly or navigation ECU may not operate normally.
    • After replacing the navigation ECU, if "New software is not compatible with the system. Contact your dealer." is displayed on the multi-display, update the software of the radio receiver assembly.
    • When performing the following work, the navigation system may restart when turning the engine switch on (ACC) (due to radio receiver assembly and navigation ECU certification).
      • Repair or replace the negative (-) battery terminal due to it being disconnected or depleted.
      • The radio receiver assembly or navigation ECU replacement or removal and installation.

    Refer to PRECAUTION [06/2018 - 08/2021]

  3. REMOVE INSTRUMENT PANEL FINISH PANEL END LH 

    Refer to PROCEDURE - Step 1

  4. REMOVE INSTRUMENT PANEL FINISH PANEL END RH 

    Refer to PROCEDURE - Step 2

  5. REMOVE CENTER INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 3

  6. REMOVE SHIFT LEVER KNOB SUB-ASSEMBLY 

    for UA80E: Refer to PROCEDURE - Step 1

    for P710: Refer to PROCEDURE - Step 1

  7. REMOVE REAR UPPER CONSOLE PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 5

  8. REMOVE UPPER CONSOLE PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 6

  9. REMOVE LOWER INSTRUMENT PANEL 

    Refer to PROCEDURE - Step 18

  10. REMOVE FRONT DOOR SCUFF PLATE RH 

    HINT: 

    Use the same procedure as for the LH side.

    Refer to PROCEDURE - Step 4

  11. REMOVE COWL SIDE TRIM BOARD RH 

    HINT: 

    Use the same procedure as for the LH side.

    Refer to PROCEDURE - Step 5

  12. REMOVE FRONT DOOR OPENING TRIM COVER RH 

    HINT: 

    Use the same procedure as for the LH side.

    Refer to PROCEDURE - Step 6

  13. REMOVE INSTRUMENT SIDE PANEL RH 

    Refer to PROCEDURE - Step 23

  14. REMOVE NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 24

  15. REMOVE LOWER INSTRUMENT PANEL LH 

    Refer to PROCEDURE - Step 26

  16. REMOVE LOWER INSTRUMENT PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 27

  17. REMOVE RADIO RECEIVER ASSEMBLY WITH SWITCH 

    Refer to PROCEDURE - Step 17

  18. REMOVE NO. 1 NAVIGATION WIRE 
    1. Disconnect the 2 connectors to remove the No. 1 navigation wire.
      GTY797874Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE NAVIGATION ECU WITH BRACKET 
    1. Remove the 2 screws.
      GTY797885Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 screws.
      GTY797888Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the 4 claws and remove the navigation ECU with bracket as shown in the illustration.
      GTY784743Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
  20. REMOVE NO. 1 RADIO RECEIVER BRACKET 
    1. Remove the 2 screws and No. 1 radio receiver bracket.
      GTY834816Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE NAVIGATION ECU 
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