Do it yourself
Frequently asked questions about cars and motorcycles

Temperature Sensor Replacement

Model: Volkswagen Polo MK III, Polo III, Polo 3, MK 3, 6N - Years 1994-2003
Part: Engine coolant temperature sensor

The coolant temperature sensor is located at the front right of the engine block (when viewed from the front) near the exhaust manifold and is housed on the connector that links the hose to the engine block. It is recommended to replace the sensor with the engine cold to avoid unpleasant burns since coolant will escape once the sensor is removed. As the first step, disconnect the connector attached to the sensor and then remove the safety tab: simply grasp it with pliers and pull it upwards; at this point, the sensor can be pulled out as it is just clipped in. Next, apply a new O-ring seal to the new sensor and insert it into its housing until fully seated; then, apply the safety tab and reconnect the connector; top up the coolant and check the sensor's operation.

Updated on 6 February 2026 by ScegliAuto

This video is currently unavailable

Related tutorials

Volkswagen Polo (2001-2009 / MK IV, Polo IV, Polo 4, MK 4, 9N) In this video, you will discover the steps to remove and replace the coolant temperature sensor in a Volkswagen Polo. After locating the part, unscre…
Volkswagen Polo (2001-2009 / MK IV, Polo IV, Polo 4, MK 4, 9N) In today's video tutorial, we will see how to remove and replace the coolant temperature sensor of the first and second series Volkswagen Polo. First…
Volkswagen Polo (2001-2009 / MK IV, Polo IV, Polo 4, MK 4, 9N) A malfunctioning camshaft sensor often causes engine starting issues as the ECU cannot read the valve position, thus failing to provide the correct i…

Other guides you may be interested in

How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

Watch the video!


by ScegliAuto

More videos