How to Replace Coolant Temperature Sensor 06-11 Toyota Camry

Difficulty: Intermediate · About 60 min · Toyota Camry

Replace the engine coolant temperature sensor on a 2006–2011 Toyota Camry, draining coolant first and bleeding air from the cooling system afterward.

Steps

1. Let the engine cool and drain coolant

   Work only on a fully cool engine. Remove the lower splash shield, place a drain pan beneath the radiator, open the drain, and drain enough coolant to lower the level below the sensor.

2. Access and remove the sensor

   Remove the intake duct to reach the sensor. Unplug its electrical connector and use a 19mm wrench to remove the sensor from its port.

3. Install the replacement sensor

   Install the new sensor into the port and tighten it to the vehicle's specification. Reconnect the electrical plug and ensure the harness is routed away from hot or moving parts.

4. Refill and bleed the cooling system

   Reinstall the intake duct and splash shield and close the radiator drain. Refill with the correct coolant, then follow the vehicle's specified bleeding procedure with the heater set as directed.

5. Check for leaks and verify operation

   With the engine cool before opening any cap, inspect the sensor area for leaks. Start the engine and monitor temperature and heater output, then recheck coolant level after it cools.

Check your vehicle’s repair manual for exact specifications and fit.