J393 is called comfort control unit, which controls the power supply of rear taillights and interiors. Some vehicles are also compatible with the function of energy manager. Generally installed on the right rear side of an Audi car.

Before replacing the on-board computer, the control unit of Audi Comfort System connects the faulty computer with the X43 1 to be refurbished, enters the function of reading ECU information, and records or prints ECU codes, such as 04502 and ECU part number.

Audi comfort system control unit, such as 06A906033, had better provide detailed information of the car when ordering new ECU from major dealers. Sometimes, if you order only by part number, you may provide the wrong module and you will not be able to code it. Make sure that the part number of the new module is the same as that of the original module, and check that the code of the new module should be 00000, and then you can code it.

Extended data:

Audi comfort system control unit includes:

Central interface panel (PSC), local control panel (PSL), door control unit (DCU), motor and screen door power supply system, etc.

Functions of DCU control unit:

Like an ordinary computer, it consists of a microprocessor (MCU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (A/D) and a large-scale integrated circuit such as shaping and driving. To describe it in a simple sentence is "ECU is the brain of a car".