Astra L4-1.8L (2009)
4. Remove the head restraint guide sleeve.
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Bend the standard wire release hook, wire diameter 1-1.5 mm (0.04-0.06 in), for active head restraint guide sleeve.
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Mark insertion depth of 50-55 mm (1.97-2.17 in).
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Insert the release hook opposite the release button of the active headrest guide sleeve, release the guide sleeve and pull out upwards.
