Called the dealer and he was able to check the error messages remotely. He asked me to put the car in diagnostic mode (3 times start stop button very fast) and then I had to grant them permission to download all the stuff they wanted.
He told me that he saw some messages regarding bad communication between some units, but it looked to him as software issue. He asked me if any update was done near (which wasn’t the case). 12V Battery is fine.
He told me that should it happen again they might have to do some programming again. He didn’t clear the messages to have the history still in the car.
So far so good, I have done almost 500kms with no issue.
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