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 MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISSTEERING AND SUSPENSIONSTEERINGPOWER STEERINGSTEERING CONTROL MODULESERVICE AND REPAIRSTEERING COLUMN - STEERING SYSTEM
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Steering Column - Steering System
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Steering Column - Steering System
POWER STEERING ECU
REMOVAL
1. SEPARATE CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE ENGINE ROOM SIDE COVER LH
3. REMOVE INVERTER BRACKET NO.5
a. Remove the bolt and inverter bracket No.5.
4. REMOVE POWER STEERING ECU ASSEMBLY
a. Remove bolt and ground cable terminal from power steering ECU assembly.
b. Release the locks of the 2 power steering ECU assembly connectors and disconnect the connectors.
c. Separate 2 wire harness clamps from the power steering ECU assembly
d. Remove 2 bolts and the power steering ECU assembly.
INSTALLATION
1. INSTALL POWER STEERING ECU ASSEMBLY
a. Install the power steering ECU assembly with the 2 bolts.
Torque: 8.0 Nm (82 kgf-cm, 71 inch lbs.)
c. Separate 2 wire harness clamps from the power steering ECU assembly
d. Remove 2 bolts and the power steering ECU assembly.
INSTALLATION
1. INSTALL POWER STEERING ECU ASSEMBLY
a. Install the power steering ECU assembly with the 2 bolts.
Torque: 8.0 Nm (82 kgf-cm, 71 inch lbs.)
b. Connect the 2 wire harness clamps to the power steering ECU assembly.
c. Connect the 2 power steering ECU assembly connectors and securely lock the connectors.
d. Install the ground cable terminal to the power steering ECU assembly with the bolt.
Torque: 6.0 Nm (61 kgf-cm, 53 inch lbs.)
2. INSTALL INVERTER BRACKET NO.5
a. Install the inverter bracket No.5 with the bolt.
Torque: 10 Nm (102 kgf-cm, 7 ft. lbs.)
3. INSTALL ENGINE ROOM SIDE COVER LH
4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
5. PERFORM INITIALIZATION
a. Some systems need initialization when disconnecting the cable from the negative battery terminal.
6. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT
Components:
REMOVAL
1. SEPARATE CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE ENGINE ROOM SIDE COVER LH
3. REMOVE INVERTER BRACKET NO.5
a. Remove the bolt and inverter bracket No.5.
4. REMOVE POWER STEERING ECU ASSEMBLY
a. Remove bolt and ground cable terminal from power steering ECU assembly.
b. Release the locks of the 2 power steering ECU assembly connectors and disconnect the connectors.
c. Separate 2 wire harness clamps from the power steering ECU assembly
d. Remove 2 bolts and the power steering ECU assembly.
INSTALLATION
1. INSTALL POWER STEERING ECU ASSEMBLY
a. Install the power steering ECU assembly with the 2 bolts.
Torque: 8.0 Nm (82 kgf-cm, 71 inch lbs.)
c. Separate 2 wire harness clamps from the power steering ECU assembly
d. Remove 2 bolts and the power steering ECU assembly.
INSTALLATION
1. INSTALL POWER STEERING ECU ASSEMBLY
a. Install the power steering ECU assembly with the 2 bolts.
Torque: 8.0 Nm (82 kgf-cm, 71 inch lbs.)
b. Connect the 2 wire harness clamps to the power steering ECU assembly.
c. Connect the 2 power steering ECU assembly connectors and securely lock the connectors.
d. Install the ground cable terminal to the power steering ECU assembly with the bolt.
Torque: 6.0 Nm (61 kgf-cm, 53 inch lbs.)
2. INSTALL INVERTER BRACKET NO.5
a. Install the inverter bracket No.5 with the bolt.
Torque: 10 Nm (102 kgf-cm, 7 ft. lbs.)
3. INSTALL ENGINE ROOM SIDE COVER LH
4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
5. PERFORM INITIALIZATION
a. Some systems need initialization when disconnecting the cable from the negative battery terminal.
6. INITIALIZE ROTATION ANGLE SENSOR AND CALIBRATE TORQUE SENSOR ZERO POINT
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:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.