TX139 temperature sensor where is this located and how do I replace

The coolant temperature sensor on a 2017 Volkswagen Passat is typically located on or near the engine. It monitors the temperature of the engine coolant and sends this information to the engine control unit (ECU) to help regulate the engine's performance and fuel efficiency.
In the case of the 2017 Volkswagen Passat, the coolant temperature sensor is located on the engine block. To access it, you may need to remove some engine covers or components to reach the sensor. The exact location can vary depending on the engine type and model specifications.
For a more accurate and detailed location, it is recommended to refer to the vehicle's service manual or consult a qualified mechanic. They can provide you with specific instructions for locating and replacing the coolant temperature sensor on your 2017 Passat model. Additionally, if you are not familiar with automotive repair and maintenance, it is advisable to seek professional assistance to avoid causing any damage to the vehicle.

Over there.

The temperature sensor for a 2005 Buick Terraza with a 3.5L engine is typically located in the engine block. More specifically, it is usually located in the cylinder head, near the thermostat housing.
To locate the temperature sensor, you can refer to your vehicle's repair manual or try the following steps:

1. Locate the thermostat housing, which is typically located at the front of the engine, near the top.
2. Follow the coolant hose that is connected to the thermostat housing. The temperature sensor is usually located along this hose.
3. The temperature sensor may be attached to the hose with a clip or bolt. It is typically a small, cylindrical sensor with wires coming out of it.

If you are unable to locate the temperature sensor, you can try consulting the repair manual or contacting a mechanic for assistance. It's also worth noting that the location of the temperature sensor may vary depending on the specific make and model of your vehicle.

Not low input sensor...P0117 KIA - Engine Coolant Temperature Sensor 1 Circuit Low Input

Possible causes
Low engine coolant level
Faulty Engine Coolant Temperature (ECT) sensor
Faulty engine coolant thermostat
Engine Coolant Temperature (ECT) sensor harness is open or shorted
Engine Coolant Temperature (ECT) sensor circuit poor electrical connection

Just replace coolant temperature sending unit....

Only has one crankshaft position sensor ,an cam sensors . To change the crank sensor u would have to pull the starter ,located above starter .
Camshaft Position Sensor Replacement - Intake Camshaft Position Sensor Replacement - Exhaust
After a crank sensor replacement a
Crankshaft Position System Variation Learn has to be done !
Important: The crankshaft position (CKP) system variation learn procedure is required when the following service procedures have been performed, regardless of whether DTC P0315 is set:
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Engine replacement

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Engine control module (ECM) replacement

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Crankshaft damper replacement

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Crankshaft replacement

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CKP sensor replacement

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Any engine repairs which disturb the crankshaft to CKP sensor relationship

Important: The scan tool monitors certain component signals to determine if all the conditions are met to continue with the CKP system variation learn procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:
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CKP sensor activity--If there is a CKP sensor condition, refer to the applicable DTC that set.

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Camshaft position (CMP) signal activity--If there is a CMP signal condition, refer to the applicable DTC that set.

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Engine coolant temperature (ECT)--If the engine coolant temperature is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.

Follow the upper rad hose to the thermostat housing. It will be there. There are two, one is the ECT (engine coolant temperature SENSOR) and the other is the temperature SENDING UNIT (input for temp. gauge ONLY).

The Coolant Temperature Sensor is located: Under hood, driver side, upper engine area, front of distributor, mounted in intake manifold

It's located under the hood, driver side, upper engine area, mounted on rear of engine block behind cyl. head.

The Engine Coolant Temperature (ECT) sensor is mounted in the intake manifold and sends engine temperature information to the ECM. The ECM supplies 5 volts to the coolant temperature sensor circuit. The sensor is a thermistor which changes internal resistance as temperature changes. When the sensor is cold (internal resistance high), the ECM monitors a high signal voltage which it interprets as a cold engine. As the sensor warms (internal resistance low), the ECM monitors a low signal voltage which it interprets as warm engine.
Fig. 1: View of the Engine Coolant Temperature (ECT) sensor Fig. 2: Engine Coolant Temperature (ECT) sensor locationTESTING
See Figures 3 and 4

1. Remove the ECT sensor from the vehicle.
2. Immerse the tip of the sensor in container of water.
3. Connect a digital ohmmeter to the two terminals of the sensor.
4. Using a calibrated thermometer, compare the resistance of the sensor to the temperature of the water. Refer to the engine coolant sensor temperature vs. resistance illustration.
5. Repeat the test at two other temperature points, heating or cooling the water as necessary.
6. If the sensor does not meet specification, it must be replaced.

Fig. 3: Intake Air Temperature (IAT) and Engine Coolant Temperature (ECT) sensor wiring diagram Fig. 4: ECT sensor temperature vs. resistance values