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.
2008 Lexus ES 350 V6-3.5L (2GR-FE)FACTORY OEM SERVICE PROCEDURE
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
2GR-FE ENGINE CONTROL SYSTEM: ENGINE COOLANT TEMPERATURE SENSOR:
INSPECTION
1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR
(a) Measure the resistance between the terminals.
Standard resistance:
If the result is not as specified, replace the sensor.
NOTE: If checking the ECT sensor in the water, keep the terminals dry. After checking, dry the sensor.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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