Sounds like a parasitic drain.
have you tested anything? Most E60 also have a recall in the trunk related to power, so you may want to check with a bmw stealership to see if it has any or all recalls done.
Sounds like a parasitic drain.
have you tested anything? Most E60 also have a recall in the trunk related to power, so you may want to check with a bmw stealership to see if it has any or all recalls done.