If you bought a new key fob or you replaced the battery on your Opel / Vauxhall / Holden Astra G, Zafira, Vectra B old key and it doesn’t work, you have to synchronise the key. So, to do that you just have to follow just 3 simple steps showed in the video below.

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Your doors has to be closed. Then…

1. Put the key in the ignition and turn the key in the second position (don’t start the engine)
2. Keep pressing for a few seconds the lock button until the car locks
When the car locks you will know that was a confirmation for a successful synchronization.
3. Release the lock button and remove the key from the ignition.
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