Lexus RX (RX 350L, RX450h) 2016-2025 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 4WD ECU assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replacement Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

Battery terminal is disconnected/reconnected

Memorize steering angle neutral point

Lane Control System

Pre-collision system

Intelligent clearance sonar system*1

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

Parking assist monitor system

Panoramic view monitor system

Initialize back door lock

Power door lock control system

Reset back door close position

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

4WD ECU assembly (When replaced with a known good one from another vehicle)*2

Clear zero point calibration data

Dynamic Torque Control AWD System

*1: When performing learning using the Techstream.

Click here

*2: When the 4WD ECU assembly is replaced with a new one, calibration is unnecessary.

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.

Click here

2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

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

Click here

3. REMOVE FRONT DOOR SCUFF PLATE RH

  • w/o Rear No. 2 Seat

    Click here

  • w/ Rear No. 2 Seat

    Click here

4. REMOVE COWL SIDE TRIM BOARD RH

Click here

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

Click here

6. REMOVE 4WD ECU ASSEMBLY

(a) Disconnect the 4WD ECU assembly connector.

(b) Remove the bolt and 4WD ECU assembly.

    Installation
    INSTALLATION PROCEDURE 1. PRECAUTION NOTICE: When 4WD ECU assembly is replaced with a known good one from another vehicle, it is necessary to perform calibration. Click here 2. INSTALL 4WD ECU ASSEM ...

    4wd Control Switch
    ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

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