Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2012RX 450H AWD V6-3.5L (2GR-FXE) HYBRIDREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULESERVICE AND REPAIRINSTALLATION
2012 Lexus RX 450h AWD V6-3.5L (2GR-FXE) Hybrid
Installation
2012 Lexus RX 450h AWD V6-3.5L (2GR-FXE) HybridSECTION Installation
POWER DISTRIBUTION: MAIN BODY ECU: INSTALLATION
1. INSTALL MULTIPLEX NETWORK BODY ECU
NOTICE:
* Make sure that no foreign objects get on the connecting surfaces.
* Do not touch the ECU connector.
(a) Insert the multiplex network body ECU up to the position it contacts the housing sidewall of the guide part as shown in the illustration.
Text in Illustration
HINT
Make sure to keep the angle 20o or more as shown in the illustration.
(b) Slide the guide of the multiplex network body ECU along the housing sidewall toward the junction block fuses as shown in the illustration.
Text in Illustration
(c) Slide the multiplex network body ECU so that it contacts side A as shown in the illustration.
Text in Illustration
NOTICE:
Do not apply excessive force to the multiplex network body ECU.
(d) While contacting the multiplex network body ECU to side A of the junction block (point of rotation), rotate it downward as shown in the illustration.
Text in Illustration
(e) Press the push area until the claw engages to install the multiplex network body ECU.
Text in Illustration
NOTICE:
* Make sure to press only the push area.
* Confirm the engagement of the multiplex network body ECU and junction block by listening for the lock sound.
HINT
If a lock sound cannot be heard, visually check the lock part engagement. The engagement can also be confirmed if the multiplex network body ECU and junction block are flush.
2. INSTALL DRIVER SIDE JUNCTION BLOCK ASSEMBLY
(a) Engage the claw to install the connector as shown in the illustration.
NOTICE:
Be sure to engage each connector securely.
(b) Engage the 2 claws to lock the connector lock as shown in the illustration.
(c) Engage the claw to connect the connector as shown in the illustration.
NOTICE:
Be sure to engage each connector securely.
(d) Install the driver side junction block assembly with the bolt and nut.
Bolt - Torque : 8.0 Nm (82 kgf-cm, 71 in-lbf)
Nut - Torque : 8.0 Nm (82 kgf-cm, 71 in-lbf)
(e) Connect the connector (1).
NOTICE:
Be sure to engage each connector securely.
(f) Engage the 2 claws to connect the 2 connectors (2) as shown in the illustration.
NOTICE:
Be sure to engage each connector securely.
(g) Connect the 3 connectors.
NOTICE:
Be sure to engage each connector securely.
3. INSTALL INSTRUMENT PANEL SAFETY PAD ASSEMBLY
HINT
Refer to the procedure from Install Instrument Panel Safety Pad Assembly Installation.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.