How to replace the Coolant Temperature Sensor on Toyota Corolla?

The engine coolant temperature (ECT) sensor is a thermistor that changes its resistance based on temperature variations, affecting the voltage signal sent to the PCM; as the sensor temperature decreases, resistance increases, and as the temperature increases, resistance decreases, with any issues in the ECT sensor circuit triggering a diagnostic trouble code. Begin by ensuring the ignition key is in the OFF position, then drain approximately one gallon from the cooling system. Next, disconnect the electrical connector and carefully unscrew the sensor. Before installing the new sensor, wrap its threads with Teflon sealing tape to prevent leakage and corrosion. Finally, installation follows the reverse order of removal, taking care to handle the coolant sensor delicately, as any damage can impact the entire fuel injection system's operation.

How to replace and test the Coolant Temperature Sensor on a Toyota Rav4?

To replace the ECT sensor, ensure the ignition key is in the Off position and drain approximately 1/4 of the engine coolant to bring it below the level of the sensor. Disconnect the electrical connector and carefully unscrew the sensor from the rear of the cylinder head, discarding the old sealing ring. It is not necessary to wrap the threads of the new sensor with Teflon sealing tape, as the new O-ring should prevent leakage. Use a new sealing ring during installation, which should be done in reverse order of removal, ensuring the sensor is tightened securely. For testing, remove the sensor and partially submerge it in a suitable pan of water, keeping the electrical terminals dry. Measure the resistance between the two terminals with a digital volt or ohm meter; at room temperature (68 degrees-F), resistance should be between 2.32k and 2.59k ohms, and at 176 degrees-F, it should be between 0.31k and 0.326k ohms. If the resistance does not fall within these ranges, the sensor should be replaced.

OEM Toyota Coolant Temperature Sensor

Coolant Water Temperature Sensor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

45 Coolant Temperature Sensors found

View related parts
Toyota Coolant Temperature Sensor
Part Number: 89422-33020
$68.84 MSRP: $96.62
You Save: $27.78 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature; Engine Coolant Temp; Cooling Fan Temp Switch; Temperature Sensor; Sensor, Water Temperature (For E.F.I.)
- Manufacturer Note: P/N LABEL=8942233020
Fits the following Toyota Models:
- Camry | 2002-2006 | LE, SE, XLE | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
- Highlander | 2008-2010 | Hybrid, Hybrid Limited | 6 Cyl 3.3 L FULL HYBRID EV-GAS (FHEV)
- Solara | 2004-2008 | SE, SE Sport, SLE, Sport | 6 Cyl 3.3 L GAS
View More
View related parts
Toyota Temperature Sending Unit
Part Number: 89428-24010
$111.02 MSRP: $155.84
You Save: $44.82 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Temperature; Switch, Temperature Detect
Fits the following Toyota Models:
- Supra | 1993-1998 | Base, Twin Turbo | 6 Cyl 3.0 L GAS
View related parts
Toyota Coolant Temperature Sensor
Part Number: 89422-06010
$65.64 MSRP: $92.13
You Save: $26.49 (29%)
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature; Engine Coolant Temperature Sensor; Coolant Temperature Sensoror; Temperature Sensor; Temperature Sending Unit; Sensor, Water Temperature (For E.F.I.)
Fits the following Toyota Models:
- 4Runner | 2003-2008 | Limited, Sport, SR5 | 6 Cyl 4.0 L GAS, 8 Cyl 4.7 L GAS
- Avalon | 2005-2008 | Limited, Touring, XL, XLS | 6 Cyl 3.5 L GAS
- Camry | 2007-2011, 2003 | Base, CE, Hybrid, LE, SE, XLE | 4 Cyl 2.4 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.4 L GAS, 6 Cyl 3.5 L GAS
- Corolla | 2009-2010 | Base, LE, S, XLE, XRS | 4 Cyl 1.8 L GAS, 4 Cyl 2.4 L GAS
- FJ Cruiser | 2007 | Base, TRD Special Edition | 6 Cyl 4.0 L GAS
- Highlander | 2004-2007 | Base | 4 Cyl 2.4 L GAS
- Land Cruiser | 2006-2007 | Base | 8 Cyl 4.7 L GAS
- Prius | 2004-2005 | Base | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
- RAV4 | 2004-2005 | Base, L, Sport | 4 Cyl 2.4 L GAS
- Sequoia | 2005-2009 | Limited, SR5 | 8 Cyl 4.7 L GAS
View More
View related parts
Toyota Coolant Temperature Sensor
Part Number: 89422-22030
$68.84 MSRP: $96.62
You Save: $27.78 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature; Engine Coolant Temperature Sensor; Coolant Temperature Sensoror; Temperature Sending Unit; Sensor; Sensor, Water Temperature (For E.F.I.)
Fits the following Toyota Models:
- Echo | 2000-2005 | Base | 4 Cyl 1.5 L GAS
- Tercel | 1997-1998 | CE | 4 Cyl 1.5 L GAS
View related parts
Toyota Temperature Sensor
Part Number: 89429-53010
$106.05 MSRP: $148.85
You Save: $42.80 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Temperature; Oil Temperature Sending Unit
Fits the following Toyota Models:
- GR Corolla | 2023 | Circuit Edition, Core, Morizo Edition | 3 Cyl 1.6 L GAS
View related parts
Toyota Coolant Temperature Sensor
Part Number: SU003-04714
$18.63 MSRP: $24.12
You Save: $5.49 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Temperature; Engine Coolant Temperature Sensor; Coolant Temperature Sensoror; Temperature Sensor; Sensor, Water Temperature (For E.F.I.); Sensor, Temperature
Fits the following Toyota Models:
- 86 | 2017-2020 | Base, GT, Hakone Edition, Special Edition, TRD Special Edition | 4 Cyl 2.0 L GAS
View related parts
Toyota Fan Switch
Part Number: 89428-32010
$138.99 MSRP: $196.76
You Save: $57.77 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Temperature; Cooling Fan Temperature Switch; Temperature Sending Unit; Switch, Temperature Detect
- Replaces: 89428-15011
Fits the following Toyota Models:
- Camry | 1984-1988 | Base, DLX, DLX All Trac, LE, LE All Trac | 4 Cyl 1.8 L DIESEL, 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- Celica | 1986-1988 | GT, GTS, ST | 4 Cyl 2.0 L GAS
- Corolla | 1988-1992 | Base, DLX, DLX All Trac, FX, FX16, FX16 GTS, GTS, LE, SR5, SR5 All Trac | 4 Cyl 1.6 L GAS
View More
View related parts
Toyota Temperature Sending Unit
Part Number: 89427-12090
$123.01 MSRP: $174.13
You Save: $51.12 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Temperature; Switch, Temperature Detect
- Replaces: 89427-12100
Fits the following Toyota Models:
- Corolla | 1991-1992 | Base, DLX, DLX All Trac, LE | 4 Cyl 1.6 L GAS
View related parts
Toyota Temperature Sensor, Rear
Part Number: 89429-WAA01
$15.30 MSRP: $21.29
You Save: $5.99 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Temperture; Differential Oil Temperature Sensor, Rear; Sensor, Oil Temperature
- Position: Rear
Fits the following Toyota Models:
- GR Supra | 2020-2024 | 45th Anniversary Edition, A91 Edition, A91-MT Edition, Base, Launch Edition, Premium | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS
View related parts
Toyota Coolant Temperature Sensor
Part Number: 89422-WAA01
$30.02 MSRP: $41.78
You Save: $11.76 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature; Engine Coolant Temperature Sensor
Fits the following Toyota Models:
- GR Supra | 2020-2023 | A91 Edition, A91-MT Edition, Base, Launch Edition, Premium | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS
View related parts
Toyota Coolant Temperature Sensor
Part Number: 89422-WAA02
$30.02 MSRP: $41.78
You Save: $11.76 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature; Engine Coolant Temperature Sensor; Temperature Sensor
Fits the following Toyota Models:
- GR Supra | 2020-2024 | 45th Anniversary Edition, A91 Edition, A91-MT Edition, Base, Launch Edition, Premium | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS
View related parts
Toyota Coolant Temperature Sensor
Part Number: 89422-WB002
$50.51 MSRP: $70.31
You Save: $19.80 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature; Engine Coolant Temp; Cooling Fan Temp Switch; Temperature Sensor
Fits the following Toyota Models:
- Yaris | 2019-2020 | L, LE, XLE | 4 Cyl 1.5 L GAS
- Yaris iA | 2017-2018 | Base | 4 Cyl 1.5 L GAS
View related parts
Toyota Coolant Temperature Sensor
Part Number: 89429-WAA02
$30.02 MSRP: $41.78
You Save: $11.76 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Temperature
Fits the following Toyota Models:
- GR Supra | 2020-2023 | A91 Edition, A91-MT Edition, Base, Launch Edition, Premium | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS
View related parts
Toyota Coolant Temperature Sensor
Part Number: 89422-WB001
$49.83 MSRP: $69.35
You Save: $19.52 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature; Engine Coolant Temperature Sensor; Coolant Temperature Sensoror; Sensor, Water Temperature (For E.F.I.)
Fits the following Toyota Models:
- Yaris | 2019-2020 | L, LE, XLE | 4 Cyl 1.5 L GAS
- Yaris iA | 2017-2018 | Base | 4 Cyl 1.5 L GAS
View related parts
Toyota Fan Switch
Part Number: 89428-10100
$93.44 MSRP: $131.16
You Save: $37.72 (29%)
Product Specifications
- Other Name: Switch, Temperature; Cooling Fan Temperature Switch; Engine Cooling Fan Switch; Coolant Fan Switch; Temperature Sending Unit; Switch, Temperature Detect
- Manufacturer Note: AISIN
Fits the following Toyota Models:
- Tercel | 1987-1990 | Base, DLX, DX, EZ, SR5, STD | 4 Cyl 1.5 L GAS
View related parts
Toyota Fan Switch
Part Number: 89428-20060
Product Specifications
- Other Name: Switch, Temperature; Cooling Fan Temp Switch; Coolant Temp Sensor; Engine Cooling Fan Switch; Temperature Switch; Temperature Sending Unit; Switch, Temperature Detect
Fits the following Toyota Models:
- Camry | 1987-1991 | Base, DLX, DLX All Trac, LE, LE All Trac | 4 Cyl 2.0 L GAS, 6 Cyl 2.5 L GAS
- Celica | 1989-1991 | GT, GTS, ST | 4 Cyl 1.6 L GAS, 4 Cyl 2.0 L GAS
- Corolla | 1984-1992 | Base, DLX, DLX All Trac, FX, FX16, FX16 GTS, GTS, LE, LE Limited, Sport DLX, SR5, SR5 All Trac | 4 Cyl 1.6 L GAS
- Paseo | 1992 | Base | 4 Cyl 1.5 L GAS
- Tercel | 1990-1992 | DLX, DX, EZ, LE, STD | 4 Cyl 1.5 L GAS
View More
View related parts
Toyota Coolant Temperature Sensor
Part Number: SU003-08426
$27.62 MSRP: $38.44
You Save: $10.82 (29%)
Product Specifications
- Other Name: Sensor Assembly-Temperature; Engine Coolant Temperature Sensor; Temperature Sensor; Temperature Sending Unit; Sensor, Water Temperature (For E.F.I.); Sensor, Temperature
Fits the following Toyota Models:
- GR86 | 2022-2023 | 10th Anniversary Special Edition, Base, Premium | 4 Cyl 2.4 L GAS
View related parts
Toyota Fan Switch
Part Number: 88625-17011
$68.56 MSRP: $96.24
You Save: $27.68 (29%)
Product Specifications
- Other Name: Thermistor; Cooling Fan Temperature Switch; Thermo Switch Assembly
Fits the following Toyota Models:
- MR2 | 1992-1995 | Base, Turbo | 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L GAS
View related parts
Toyota Temperature Sending Unit
Part Number: 89427-12060
Product Specifications
- Other Name: Switch, Temperature; Switch, Temperature Detect
- Manufacturer Note: WATER TEMPERATURE SWITCH
Fits the following Toyota Models:
- Tercel | 1987-1988 | DLX, SR5 | 4 Cyl 1.5 L GAS
View related parts
Toyota Temperature Sending Unit
Part Number: 89427-16020
Product Specifications
- Other Name: Switch, Temperature; Switch, Temperature Detect
Fits the following Toyota Models:
- Corolla | 1984-1987 | 4 Cyl 1.6 L GAS

| Page 1 of 3 |Next >

1-20 of 45 Results

Toyota Coolant Temperature Sensor

OEM parts deliver unmatched quality you can rely on. They pass extensive quality control inspections. Toyota produces them to the official factory specifications. This process helps prevent defects and imperfections. So you can get exceptional lifespan and a flawless fit. Need new OEM Toyota Coolant Temperature Sensor? You'll love our wide selection of genuine options. Shop in minutes and skip the hunt. Our prices are unbeatable, you'll save time and money. It's easy to shop and find the right piece. Our committed customer service team gives professional help from start to finish. Every part includes a manufacturer's warranty. We ship quickly, your parts will arrive fast at your door.

Toyota Coolant Temperature Sensor measures the coolant heat to maintain engine temperature constant and avoid expensive overheating. Toyota has expanded to become a global force by reducing waste, authorizing assembly lines, and demanding problems to be solved immediately. Toyota infuses that same inexorable hard on its Hybrid Synergy Drive, allowing daily drives to gulp gasoline rather than suck down gallons, and providing earth-friendly choices in almost every showroom category. Toyota supports those electrified drives with a versatile TNGA platform that reduces centers of gravity, hardens cabins, and makes steering sharper such that drivers feel safe but alert. Toyota gains loyalty because its vehicles are long-lasting, salt-bitten winters, and even to this day, the cars are powering their mileage at a cheap cost, which is why their durability is not a marketing slogan but a daily phenomenon. Coolant Temperature Sensor is mounted threaded in the engine block, dipping the small thermistor into the flowing coolant to make the voltage changes reflect the actual degrees, then electronics are applied to take action before metal is destroyed. The sensor is fed with coolant temperature data to the control unit that alters the mix of fuel and spark on the fly. Coolant Temperature Sensor also commands the fans to rotate ahead of the heat snowballing into the warped heads. Coolant Temperature Sensor thus protects all models in the lineup in terms of performance, emissions, and wallets.

Toyota Coolant Temperature Sensor Parts and Q&A

Coolant Temperature Sensor
89422-35010
Q: How to replace the Coolant Temperature Sensor on Toyota Corolla?
A:
The engine coolant temperature (ECT) sensor is a thermistor that changes its resistance based on temperature variations, affecting the voltage signal sent to the PCM; as the sensor temperature decreases, resistance increases, and as the temperature increases, resistance decreases, with any issues in the ECT sensor circuit triggering a diagnostic trouble code. Begin by ensuring the ignition key is in the OFF position, then drain approximately one gallon from the cooling system. Next, disconnect the electrical connector and carefully unscrew the sensor. Before installing the new sensor, wrap its threads with Teflon sealing tape to prevent leakage and corrosion. Finally, installation follows the reverse order of removal, taking care to handle the coolant sensor delicately, as any damage can impact the entire fuel injection system's operation.
Coolant Temperature Sensor
89422-33030
Q: How to replace and test the Coolant Temperature Sensor on a Toyota Rav4?
A:
To replace the ECT sensor, ensure the ignition key is in the Off position and drain approximately 1/4 of the engine coolant to bring it below the level of the sensor. Disconnect the electrical connector and carefully unscrew the sensor from the rear of the cylinder head, discarding the old sealing ring. It is not necessary to wrap the threads of the new sensor with Teflon sealing tape, as the new O-ring should prevent leakage. Use a new sealing ring during installation, which should be done in reverse order of removal, ensuring the sensor is tightened securely. For testing, remove the sensor and partially submerge it in a suitable pan of water, keeping the electrical terminals dry. Measure the resistance between the two terminals with a digital volt or ohm meter; at room temperature (68 degrees-F), resistance should be between 2.32k and 2.59k ohms, and at 176 degrees-F, it should be between 0.31k and 0.326k ohms. If the resistance does not fall within these ranges, the sensor should be replaced.