Lexus RX (RX 350L, RX450h) 2016-2024 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 main body ECU removal/installation are shown below.
Necessary Procedure After Parts Removed/Installed/Replaced| Replaced Part or Performed Procedure | Necessary Procedure | Effect/Inoperative Function when Necessary Procedure not Performed | Link |
|---|---|---|---|
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*1: When performing learning using the Techstream.
Click here | |||
| 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) | | |
| Main body ECU (multiplex network body ECU) | Perform code registration (Immobiliser system) |
| |
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 INSTRUMENT PANEL GARNISH LH
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4. REMOVE FRONT DOOR SCUFF PLATE LH
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5. REMOVE COWL SIDE TRIM BOARD LH
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6. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY
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7. DISCONNECT HOOD LOCK CONTROL LEVER SUB-ASSEMBLY
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8. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY
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9. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU
| (a) Disconnect each connector. |
|
(b) Disengage the 2 claws and pull down the 2 lock levers to disconnect the 2 connectors as shown in the illustration.
.png) | Remove in this Direction |
| (c) Remove the 2 nuts. |
|
(d) Pull out the instrument panel junction block assembly with main body ECU.
(e) Disengage the clamp.
| | Remove in this Direction |
(f) Disengage the 2 claws and raise the 2 lock levers to disconnect the 2 connectors as shown in the illustration and remove the instrument panel junction block assembly with main body ECU.
10. REMOVE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Press the claw of the instrument panel junction block assembly as shown in the illustration to release the lock.
| *1 | Instrument Panel Junction Block Assembly |
| *2 | Main Body ECU (Multiplex Network Body ECU) |
.png) | Push in this Direction |
(b) With the instrument panel junction block assembly lock released, insert a screwdriver with its tip wrapped with protective tape horizontally between the main body ECU (multiplex network body ECU) and instrument panel junction block assembly.
| *a | Protective Tape |
| | Insert in this Direction |
.png) | Remove in this Direction |
NOTICE:
- Use a screwdriver with a diameter between 5.0 mm (0.197 in.) and 6.3 mm (0.248 in.) and a length of approximately 90 mm (3.54 in.).
- Do not insert the screwdriver under the connector socket of the main body ECU (multiplex network body ECU).
(c) Using the screwdriver, carefully raise the main body ECU (multiplex network body ECU) to the position where the connector becomes disconnected.
NOTICE:
Do not twist the screwdriver to raise the main body ECU (multiplex network body ECU).
(d) Raise the main body ECU (multiplex network body ECU) as shown by the arrow (1), and then pull it out as shown by the arrow (2) in the illustration.
| | Remove in this Direction (1) |
| | Remove in this Direction (2) |
NOTICE:
Do not touch the main body ECU (multiplex network body ECU) connector.