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How to Change the Coolant Level Sensor on an Opel Astra

Model: Vauxhall Astra Astra H - Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010

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Video tutorial

Repair the coolant level sensor on an Opel Astra. The reservoir is clearly visible when you open the bonnet, and while the warning light indicates that the coolant needs topping up, you can see from the reservoir that there is sufficient coolant present.

Therefore, the problem is the sensor. Disconnect the battery located just below and remove it temporarily.

To disconnect the side clip of the reservoir, you need to remove the cover of the fuse box: only then will it be clearly visible. Remove the connector located under the reservoir using a screwdriver.

Tilt the reservoir to access the sensor, which you will replace with the new one you have already obtained, costing no more than £16.00 from major e-commerce platforms. Transfer the reducer from the old sensor to the new one, and reassemble everything in reverse order: reposition the reservoir, reconnect the connector, reattach the side clip, and then the fuse box cover.

Now it's time to reposition and reconnect the battery. The job is finished.


Updated on 4 July 2026 by ScegliAuto


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How to open the bonnet on a Volkswagen Golf?

In this tutorial, you will see how to open the bonnet on a Volkswagen Golf MK4. This is a very simple operation that follows the standard procedure. First, open the driver's door, then locate the lever in the lower left area and pull it. Next, move to the front of the vehicle, lift the bonnet slightly, and find the second lever located just above the Volkswagen logo. At this point, simply pull it towards you, fully open the bonnet, and secure it with the prop rod. To close it, gently push it down.

Watch the video!


by ScegliAuto

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