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Home >> Lexus >> 2022 >> RX 350L FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Transfer Case - Service Information) >> 4WD Control Ecu >> Removal [12/2017 - 08/2019] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.

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 LKA /LDA system Refer to INITIALIZATION [09/2015 - 08/2019]
Pre-collision system
Intelligent clearance sonar system*1
Lighting system (w/ Automatic Headlight Beam Level Control System) Refer to INITIALIZATION [09/2015 - 08/2019]
AFS (Adaptive Front-lighting System) Refer to INITIALIZATION [09/2015 - 08/2019]
Parking assist monitor system Refer to INITIALIZATION [09/2015 - 08/2019]
Panoramic view monitor system Refer to INITIALIZATION [09/2015 - 08/2019]
Initialize back door lock Power door lock control system Refer to INITIALIZATION [09/2015 - ]
Reset back door close position Power back door system Refer to INITIALIZATION [09/2015 - 08/2019]
4WD ECU assembly (When replaced with a known good one from another vehicle)*2 Clear zero point calibration data Dynamic Torque Control AWD System Refer to CALIBRATION [09/2015 - ]

*1: When performing learning using the Techstream.

Refer to CALIBRATION [12/2017 - 08/2019]

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