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Replacing the Remote Key Battery

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

If pressing the unlock or lock button on the remote key does nothing, it is very likely that the battery has run out; replacing it is straightforward as it involves opening the shell of the remote key (there is usually a small groove that serves as an invitation to insert a small screwdriver to lever it open), removing the old battery, cleaning the contacts, and inserting the new one; if you have two keys, it is advisable to replace both batteries: these are circular 3 Volt batteries, but the thickness may vary. The one in question is a CR2032.

Updated on 16 February 2026 by ScegliAuto

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