Hya,
the problem was the led turn bulb on the front side. I did install led bulbs and added a resitor to each one in parallel. Don't know why, only left side low beam stopped to work.
Today, i changed the led by original bulbs, removed the resistors, disconnected the battery for 10 minutes, and all worked again.
Go figure why the led bulbs with resistors caused such a mess.
Anyway, thank you all who tried to help.
BR,
Paulo

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BMW E53 4.8 IS 2006 -