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 DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSMALFUNCTION INDICATOR LAMPDESCRIPTION AND OPERATIONENGINE CONTROL SYSTEM
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Engine Control System
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Engine Control System
CHECK MIL (Malfunction Indicator Lamp)
a. The MIL is illuminated when the engine switch is first turned on (the engine is not running).
b. The MIL should turn OFF when the engine is started. If the MIL remains illuminated, the diagnosis system has detected malfunction or abnormality in the system.
HINT: If the MIL is not illuminated when the engine switch is first turned to on, check the MIL circuit.
a. The MIL is illuminated when the engine switch is first turned on (the engine is not running).
b. The MIL should turn OFF when the engine is started. If the MIL remains illuminated, the diagnosis system has detected malfunction or abnormality in the system.
HINT: If the MIL is not illuminated when the engine switch is first turned to on, check the MIL circuit.
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.