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This Coolant Temperature Sensor (XTS1) from Ci Ignition is designed for vehicle owners seeking a reliable replacement part. Its primary benefit is ensuring accurate coolant temperature readings to prevent engine overheating. A potential caveat is the specific thread size and connector type, requiring verification for your vehicle's compatibility. Key features include a M10 x 1 thread, a single-pin connector, and a 19mm spanner size, functioning as a temperature switch for the coolant warning lamp.
| Model Part Number | XTS1 |
|---|---|
| Brand | Ci Ignition |
The XTS1 is primarily compatible with specific Audi models such as the 100 C2 Avant and 100 C2 Saloon. It is designed to replace OEM part numbers VAG 035919521A and 171919521F. Always confirm compatibility with your vehicle's specific make, model, and year.
A single-pin connector indicates that this sensor uses a basic electrical interface, typically for switching a warning light on or off based on temperature, rather than sending a variable signal to a gauge.
No, this sensor has a specific M10 x 1 thread size. Using it in a port with a different thread size can cause leaks and damage. Ensure your vehicle requires this specific thread size.
Symptoms include the coolant warning light staying on constantly, the temperature gauge reading incorrectly (too high or too low), or the engine overheating. A diagnostic scan may also reveal a fault code related to the coolant temperature sensor.
A coolant temperature switch monitors the coolant's temperature. When the temperature reaches a predetermined high point, it closes a circuit, typically activating a warning light on the dashboard to alert the driver of a potential overheating issue.
You will need a 19mm spanner (or socket) to remove and install the sensor. Basic hand tools for disconnecting the electrical connector may also be required.
Ensure the sensor is correctly installed and the connector is securely attached. Verify the replacement part is a direct cross-reference for your vehicle's OEM part number. The issue may lie with the wiring or the coolant system itself.
Check the electrical connection to the sensor for corrosion or damage. Confirm the sensor is compatible with your vehicle's gauge system. An airlock in the cooling system can also cause erratic readings.
The sensor may not be tightened sufficiently, or the threads may be damaged. Remove the sensor, inspect the threads on both the sensor and the engine block, and reinstall with proper torque. Consider replacing the sensor if threads are damaged.
Compatibility: Before purchasing, verify that your vehicle's OEM part numbers match the cross-references provided: VAG 035919521A or 171919521F. This sensor is specifically listed for models such as the Audi 100 C2 Avant and 100 C2 Saloon. Always consult your vehicle's service manual or a qualified mechanic to confirm compatibility.
Setup:
Care: This is a replacement part with no routine maintenance required. Its longevity depends on proper installation and the overall condition of your vehicle's cooling system. Avoid using harsh chemicals or solvents on the sensor.
