Clean the exterior lamps, such as headlamps and rear lamps, with a soft and clean sponge together with mild soap and lukewarm water.
Temporary condensation on the inside of the lens in connection with cleaning is quite normal. All exterior lamps are designed to withstand this. Condensation is normally vented out from the lamp housing after the lamp has been illuminated for a while.
Do not use any strong cleaning agent or chemicals for cleaning the lamps. Such products, e.g. cleaning agents with alcohol content, may cause the lens to crack.
Do not rub with a dry sponge or rag as it may cause electric discharges that damage components in the lamp.