Ambient light is a type of mood lighting used in vehicles, which creates various atmospheres through indirect lighting of various colors and provides an emotional experience to the occupants. Ambient lighting is commonly used on the dashboard, center fascia and doors. The technical limitation of the current ambient light is that it expresses only dots or lines. However, with the development of LED technology, it has evolved to produce more diverse shapes, and thanks to the increased freedom of production, it has become one of the important elements in interior design. In addition, the range of uses of ambient light is gradually expanding, such as speed warnings as well as design elements.