Quote:
Originally Posted by Theodore
Just so there is no confusion: There is no U.S. recall for M3 models of the E9X for the battery cable.
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In Germany, there is, but only for some affected cars, see
here.
I believe it is the same problem as discussed
here.
In the second thread, you will find the part number of the repair set (it seems to be a well-known problem that has probably forced the recall or "Serienstandsverbesserung", as BMW calls a deliberate recall here).
I do not think that the OP has a contact problem with the battery pole, that would be highly unlikely. People in germany have reported a total blackout which sometimes healed itself. When oxidation happens in the defective contact, that may be a symptom. In some cases, the juction box contact already had melted because of the bad contact and had to be replaced as well.