Abstract: A method comprising: (a) heating a light module of a vehicle with a heater; (b) monitoring a temperature of the light module; (c) activating a communication sequence; and (d) performing the communication sequence so that a message is conveyed between a controller of the light module and a controller of the vehicle.

Abstract: A method comprising: (a) heating a light module of a vehicle with a heater; (b) monitoring a temperature of the light module; (c) activating a communication sequence; and (d) performing the communication sequence so that a message is conveyed between a controller of the light module and a controller of the vehicle.

Abstract: A serial communication system for a vehicle including an interface circuitry that generates a triggering signal, and a controller circuitry with an input block, an output block, a controller connected to the input block and the output block, the controller being configured to function in a normal mode or in a diagnostic mode, wherein in the normal mode the controller receives a sensing signal and provides an actuating signal based on the sensing signal, and in the diagnostic mode the input block transmits an input communication signal from the interface circuitry and the output block transmits an output communication signal from the controller to the interface circuitry, and a Diagnostic mode detector connected to the input block and configured to receive the triggering signal detect the triggering signal, and switch the controller from the normal mode to the diagnostic mode when the triggering signal is detected.

Abstract: A vehicle light assembly, a system, and a method for reducing electromagnetic interference are provided. The vehicle light assembly includes a light source, DC-DC conversion circuitry including a switch, and a microcontroller. The microcontroller is configured to generate a reference voltage, the reference voltage being changed periodically within a predetermined range, and drive the switch associated with the DC-DC conversion circuitry with a signal based on at least the reference voltage.

Abstract: A serial communication system for a vehicle including an interface circuitry that generates a triggering signal, and a controller circuitry with an input block, an output block, a controller connected to the input block and the output block, the controller being configured to function in a normal mode or in a diagnostic mode, wherein in the normal mode the controller receives a sensing signal and provides an actuating signal based on the sensing signal, and in the diagnostic mode the input block transmits an input communication signal from the interface circuitry and the output block transmits an output communication signal from the controller to the interface circuitry, and a Diagnostic mode detector connected to the input block and configured to receive the triggering signal detect the triggering signal, and switch the controller from the normal mode to the diagnostic mode when the triggering signal is detected.

Abstract: Aspects of the disclosure provide a light emitting diode (LED) fade-in method. The method can include increasing an output current of an LED lighting system from an initial current level to an intermediate current level during a first phase of a fade-in process via a first set of current steps, and decreasing the output current of the LED lighting system from the intermediate current level to a target current level during a second phase of the fade-in process via a second set of current steps. The LED lighting system has a brightness resolution, and each of the first and second sets of current steps corresponds to a finest adjustable brightness value of the brightness resolution.

Abstract: A vehicle light assembly, a system, and a method for reducing electromagnetic interference are provided. The vehicle light assembly includes a light source, DC-DC conversion circuitry including a switch, and a microcontroller. The microcontroller is configured to generate a reference voltage, the reference voltage being changed periodically within a predetermined range, and drive the switch associated with the DC-DC conversion circuitry with a signal based on at least the reference voltage.

Abstract: An LED lighting circuit for detecting individual LED failure, including a lighting unit including a plurality of LEDs connected in series, and a plurality of LED sensors each associated with a respective one of the LEDs. Also included is a lighting unit status signal generator coupled to the plurality of LED sensors configured to provide a status signal indicating a fault when any individual LED is short circuited.