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.
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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.
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
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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 ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lin Communication System: Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Lane Control System Pre-collision Sys ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: DCM Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area DCM Communication Stop Mode Either condition is met:
"DCM" is not displayed on the CAN Bus Check screen of the Techstream.
Click here
Communication system DTCs (DTCs that start with U) that correspond to "DCM Communication Stop Mode ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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