The invention concerns a motor vehicle light assembly comprising a pixelated light emitting diode designed to project, from the motor vehicle, a predefined image, and a device for controlling the pixelated light emitting diode, the pixelated light-emitting diode comprising a plurality of elementary diodes supplied with a common DC current and respectively driven by a pulse-width modulation signal of the supply common DC current, the pixelated light-emitting diode comprising a temperature sensor, and the control device being configured to modify the pulse-width modulation signal depending on a temperature of the pixelated light emitting diode and/or of one or more elementary diodes.