Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Temperature Sensor Replacement

Model: Volkswagen Polo 6N, Polo III, MK III, Polo 3, MK 3 - Years: 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Part: Engine coolant temperature sensor

See other generations:
This video is currently unavailable

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


Related tutorials

Guide to Replacing the Timing Belt on a Volkswagen Polo 1.0 MPI
Guide to Replacing the Timing Belt on a Volkswagen Polo 1.0 MPI
Volkswagen Polo (1994-2003 / 6N, Polo III, MK III, Polo 3, MK 3) This guide outlines the main steps for removing and replacing the timing belt on a Volkswagen Polo 1.0 MPI. First, open the bonnet of the vehicle and…
Fuel Injector Replacement
Fuel Injector Replacement
Volkswagen Polo (2001-2009 / Polo IV, MK IV, Polo 4, MK 4, 9N) Keeping the injectors in good condition improves fuel atomisation, resulting in many benefits: better performance, reduced consumption, and lower emi…
Replacement of Car Wiper Blades
Replacement of Car Wiper Blades
Volkswagen Polo (1994-2003 / 6N, Polo III, MK III, Polo 3, MK 3) Changing the wiper blades on your car is a maintenance task that is not very complicated to carry out. First, you will need to purchase new wiper bla…
ScegliAuto offers an extensive international collection of automotive tutorials available in 12 languages. Each guide combines instructional videos with original explanations written by experienced human editors, along with information about the car models covered.

What does the red or orange zig-zag warning light mean on the Dacia Sandero?

In this video, you will learn what the warning light depicting a red or orange zig-zag on the dashboard of the Dacia Sandero means. This is a multifunction warning light; if it appears red, it is a prompt to stop as soon as possible, switch off the engine, and exit the vehicle quickly, contacting a recovery service and the Dacia Dealer. If it lights up orange, it indicates an electronic fault in the vehicle; you can continue driving, but you must reach a Dacia service centre as soon as possible. If it lights up alongside the spanner symbol, it means it is time for a service, which is due every year or 10,000 miles (whichever comes first). The service is mandatory to maintain the warranty. If it lights up together with the tyre warning light, it indicates a loss of pressure in one of the tyres. You should check all the tyres as soon as possible to identify the source of the pressure loss. If it stays on with the engine warning light, it indicates a problem with the vehicle's emissions system; if it flashes, the issue may be a component of the engine, such as the spark plugs or coil, for example. On diesel versions, it may light up alongside the glow plug symbol, indicating a related issue. If it lights up with the ESP symbol, it means there is a fault in the system that needs checking.

Watch the video!


by ScegliAuto

More videos