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.
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*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.
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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 FRONT DOOR SCUFF PLATE RH
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4. REMOVE COWL SIDE TRIM BOARD RH
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5. REMOVE NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY
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6. REMOVE 4WD ECU ASSEMBLY
(a) Disconnect the 4WD ECU assembly connector. |
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(b) Remove the bolt and 4WD ECU assembly. |
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Steering System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use these procedures to troubleshoot the power steering system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
NEXT 2. INSPECT BATTERY VOLTAGE (a) Turn the engine switch off. (b) Measure the voltage of the batt ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Cooled Oil Cooler: Installation
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