Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Installation

INSTALLATION

CAUTION / NOTICE / HINT

PROCEDURE

1. INSTALL MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Set the main body ECU (multiplex network body ECU) to the position where the guide of the main body ECU (multiplex network body ECU) contacts the housing sidewall of the instrument panel junction block assembly as shown in the illustration.

*a	20°or more
*b	Housing Sidewall
	Set in this Direction

HINT:

Make sure to keep the angle at 20° or more as shown in the illustration.

(b) Slide the main body ECU (multiplex network body ECU) along the housing sidewall as shown in the illustration and engage the 2 guides.

*a	Housing Sidewall
	Slide in this Direction

(c) While keeping the main body ECU (multiplex network body ECU) in contact with side A of the instrument panel junction block assembly (axis of rotation), lower it as shown in the illustration.

*a	Side A
	Install in this Direction

(d) Press the push area until the claw engages to install the main body ECU (multiplex network body ECU).

*1	Instrument Panel Junction Block Assembly
*2	Main Body ECU (Multiplex Network Body ECU)
	Push Area

HINT:

If a click sound cannot be heard, visually check the engagement of the lock. The engagement can also be confirmed if the main body ECU (multiplex network body ECU) and instrument panel junction block assembly are flush.

2. INSTALL INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU

(a) Connect the 2 connectors and push down the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.

Install in this Direction

NOTICE:

Be sure to connect the connector securely.

(b) Engage the clamp.

(c) Install the instrument panel junction block assembly with main body ECU with the 2 nuts.

Torque:

8.0 N·m {82 kgf·cm, 71 in·lbf}

(d) Connect the 2 connectors and raise the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.

Install in this Direction

NOTICE:

Be sure to connect the connector securely.

(e) Connect each connector.

3. INSTALL LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY

Click here

4. CONNECT HOOD LOCK CONTROL LEVER SUB-ASSEMBLY

Click here

5. INSTALL NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

Click here

6. INSTALL COWL SIDE TRIM BOARD LH

Click here

7. INSTALL FRONT DOOR SCUFF PLATE LH

Click here

8. INSTALL INSTRUMENT PANEL GARNISH LH

Click here

9. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

NOTICE:

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

Click here