Astra L4-1.8L (2009)
4. For vehicle with active headrest, detach headrest guide sleeve.
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Make release hook for active headrest guide sleeve using standard commercially available wire diameter 1-1.5 mm (0.04-0.06 in).
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Mark insert depth of 50-55 mm (0.078-0.085 in).
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Insert active headrest release hook opposite the release knob of the guide sleeve, release guide sleeve and remove upwards.
