The roof box should be carefully cleaned and maintained, particularly during the winter months. For this purpose, only use a solution of water and standard washing-up liquid without any alcohol, bleach or ammonium additives as otherwise the surface of the roof box could suffer damage.
Please do not use any standard car cockpit sprays. The locks should be lubricated with spray lubricant (no lubricant should be allowed to come into contact with the plastic surface of the roof box).
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