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How to Replace the Car Key Battery

Model: Vauxhall Astra Astra H - Years 2004-2010
Part: Key

To replace the remote battery, start by opening the key. Next, locate the edge of the battery cover panel and gently lift it with slight pressure to reveal the battery.
Remove the battery from its compartment and ensure you replace it with the same model, which is printed on the original battery. Before inserting the new battery, carefully check the correct polarity and then securely fit it into place.
At this point, carefully reattach the battery cover by pressing gently around the entire perimeter of the remote until it is fully and correctly seated.

The video covers a key for the Opel Astra H.

Updated on 2 February 2026 by ScegliAuto

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