Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during navigation ECU removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*1: When performing learning using the Techstream.

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Disconnect cable from negative battery terminal

Memorize steering angle neutral point

Lane Control System

Pre-collision System

Intelligent Clearance Sonar System*1

Parking Assist Monitor System

Panoramic View Monitor System

Lighting System (w/ Automatic Headlight Beam Level Control System)

Initialize back door lock

Power Door Lock Control System

Reset back door close position

Power Back Door System (w/ Outside Door Control Switch)

PROCEDURE

1. PRECAUTION

NOTICE:

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

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(a) for Audio and Visual System:

NOTICE:

  • When performing the following work, the audio and visual 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.
  • 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.

NOTICE:

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(b) for Navigation System:

NOTICE:

  • 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.
  • 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.

NOTICE:

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2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

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3. REMOVE LOWER NO. 2 INSTRUMENT PANEL FINISH PANEL

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4. REMOVE LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL

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5. REMOVE INSTRUMENT CLUSTER FINISH PANEL ORNAMENT

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6. REMOVE LOWER INSTRUMENT FINISH PANEL SUB

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7. REMOVE RADIO RECEIVER ASSEMBLY WITH REGISTER

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8. REMOVE NO. 1 NAVIGATION WIRE

(a) Disconnect the 2 connectors to remove the No. 1 navigation wire.

9. REMOVE NO. 1 RADIO BRACKET

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10. REMOVE NO. 2 RADIO BRACKET

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11. REMOVE NAVIGATION ECU

    Components
    COMPONENTS ILLUSTRATION *1 INSTRUMENT CLUSTER FINISH PANEL ORNAMENT *2 LOWER INSTRUMENT FINISH PANEL SUB *3 LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL *4 LOWER NO. 2 INSTRUMENT PANE ...

    Navigation System
    ...

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