A method of controlling an ambient light feature of a cup holder assembly having one or more cup holders includes providing a light source having a light output of varying luminous intensity, sensing an amount of light reflected from an object received in one of the cup holders using a light sensor, and controlling the luminous intensity of the light output based on the amount of light reflected and the distance between the object and a sidewall of the cup holder assembly. In this method, a change in the amount of light reflected from an object received in one of the cup holders correlates to a change in the luminous intensity provided by the light source, and a change in the distance between the object received the cup holder and the sidewall of the cup holders correlates to a change in the luminous intensity provided by the light source.