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 DIAGNOSISHYBRID DRIVE SYSTEMSDESCRIPTION AND OPERATIONSYSTEM DESCRIPTION
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
System Description
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION System Description
System Diagram (Part 1):
System Diagram (Part 2):
System Diagram (Part 3):
SYSTEM DESCRIPTION
1. BASIC OPERATION
a. This system generates a motive force in combination with the engine, Generator, Motor, and Rear Motor (with 4WD system) in accordance with the driving conditions. Representative examples of the various combinations are described below.
b. Front Wheel Operation:
1. Supply of electrical power from the HV battery to the Motor provides force to drive the front wheels.
2. While the front wheels are being driven by the engine via the planetary gears, the Generator is driven by the engine via the planetary gears, in order to supply the generated electricity to the Motor.
3. The generator is rotated by the engine via the planetary gears, in order to charge the HV battery.
4. When the vehicle is decelerating, kinetic energy from the front wheels is recovered and converted into electrical energy and used to recharge the HV battery by means of the Motor.
c. Rear Wheel (with 4WD System Model)
1. To ensure the proper driving force of the vehicle during start-off or acceleration, the electrical power of the HV battery is supplied to the Rear Motor in order to drive the rear wheels.
2. During the full throttle acceleration of the vehicle, both the electrical power of the HV battery and the electrical power generated by the Generator are supplied to the Rear Motor in order to drive the rear wheels.
3. When the vehicle is decelerating, kinetic energy from the rear wheels is recovered and converted into electrical energy and used to recharge the HV battery by means of the Rear Motor.
2. SYSTEM DIAGRAM
3. FUNCTION OF MAIN COMPONENTS
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.