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Start the engine and direct the heater on the windscreen.
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Shake the aerosol and rotate the scraper cap to let the arrow on the nozzle point towards the slot.
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Spray the icy surface top-down from a distance of 20-30 cm (8-10 inch).
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Loosen and wipe the melting ice with the scraper cap.
In case of re-icing, during driving use the PREVENT or the PRELIX winter windscreen washer fluid.