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 DIAGNOSISENGINE, COOLING AND EXHAUSTCOOLING SYSTEMENGINE - COOLANT TEMPERATURE SENSOR/SWITCHCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)TESTING AND INSPECTION
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Testing and Inspection
INSPECTION
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the terminals.
If the result is not as specified, replace the sensor.
NOTE: In case of checking the water temperature sensor in the water, do not allow water to go into the terminals. After checking, dry the sensor.
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the terminals.
If the result is not as specified, replace the sensor.
NOTE: In case of checking the water temperature sensor in the water, do not allow water to go into the terminals. After checking, dry the sensor.
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.