Well, I also questioned the bmw guys too! But that's the computer report, the key reader didn't find any faults, then they pluged in their computer and found out the caurse, they say it could be at one point the battery loss its power when I unlock the car which had the day time lights turned on or the auto light switched on and so on...
I don't know if that's true or not, but it cost only $20 to fix.
