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Thanks for choosing Just Answer . I'm Wolfgang here to help!!Below is my first answer or request for more information. If you do not understand it, or you need more information from me, or need me to go in more detail. Do not rate yet, just reply. Put yourself in my shoes, I can not see, smell, hear, feel or touch your car, nor do I know any history on it. So take into consideration I am doing my best based on what you tell me. Also understand fixing cars often requires sophisticated tools, that you may not own. So even if you can not do what is outlined in my answer, that does not mean my answer is wrong deserving to be rated negative.
i do need the vin # ***** the vehicle please to get the factory wiring diagram.
which headlight is not working?
do you have VAG COM scan tool?
Vag com is a scan tool for VW Audi, bentley's etc. being that this is a smart system that scan tool will be needed for diagnosis to check for faults in the j519 module and being it is a smart system if the circuit like your headlamps has an issue it will cut the power out so diagnosis of the system will be almost impossible without the VAG COM